/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:47:06,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:47:06,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:47:06,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:47:06,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:47:06,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:47:06,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:47:06,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:47:06,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:47:06,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:47:06,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:47:06,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:47:06,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:47:06,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:47:06,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:47:06,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:47:06,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:47:06,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:47:06,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:47:06,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:47:06,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:47:06,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:47:06,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:47:06,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:47:06,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 22:47:06,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 22:47:06,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 22:47:06,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 22:47:06,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 22:47:06,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-03-11 22:47:06,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:47:06,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:47:06,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:47:06,157 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-SemanticLbe.epf [2021-03-11 22:47:06,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:47:06,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:47:06,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:47:06,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:47:06,186 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:47:06,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:47:06,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:47:06,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:47:06,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:47:06,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:47:06,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:47:06,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:47:06,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:47:06,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:47:06,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:47:06,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:47:06,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:47:06,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:47:06,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:47:06,422 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 22:47:06,423 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 22:47:06,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-03-11 22:47:06,424 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-03-11 22:47:06,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:47:06,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 22:47:06,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:47:06,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:47:06,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:47:06,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:47:06,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:47:06,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:47:06,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:47:06,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... [2021-03-11 22:47:06,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:47:06,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:47:06,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:47:06,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:47:06,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:47:06,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 22:47:06,540 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 22:47:06,540 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 22:47:06,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 22:47:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 22:47:06,541 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 22:47:06,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 22:47:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 22:47:06,542 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 22:47:06,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 22:47:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 22:47:06,542 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 22:47:06,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 22:47:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 22:47:06,542 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 22:47:06,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 22:47:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:47:06,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:47:06,544 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 22:47:06,544 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 22:47:06,544 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 22:47:06,544 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 22:47:06,544 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 22:47:06,544 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 22:47:06,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:47:06,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:47:06,656 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 22:47:06,657 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:47:06 BoogieIcfgContainer [2021-03-11 22:47:06,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:47:06,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:47:06,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:47:06,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:47:06,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:47:06" (1/2) ... [2021-03-11 22:47:06,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b71f2 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:47:06, skipping insertion in model container [2021-03-11 22:47:06,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:47:06" (2/2) ... [2021-03-11 22:47:06,662 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-03-11 22:47:06,666 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:47:06,668 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:47:06,668 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:47:06,740 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-03-11 22:47:06,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-11 22:47:06,764 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:47:06,765 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:47:06,765 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:47:06,765 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:47:06,765 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:47:06,765 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:47:06,765 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:47:06,765 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:47:06,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-03-11 22:47:06,872 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-03-11 22:47:06,872 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-11 22:47:06,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-11 22:47:06,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-03-11 22:47:06,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-03-11 22:47:06,889 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:47:06,896 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 71 transitions, 310 flow [2021-03-11 22:47:06,897 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 71 transitions, 310 flow [2021-03-11 22:47:06,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions, 310 flow [2021-03-11 22:47:06,938 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2021-03-11 22:47:06,938 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-11 22:47:06,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1573 event pairs, 0 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-11 22:47:06,945 INFO L116 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-11 22:47:07,008 INFO L131 LiptonReduction]: Checked pairs total: 4368 [2021-03-11 22:47:07,008 INFO L133 LiptonReduction]: Total number of compositions: 7 [2021-03-11 22:47:07,009 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-11 22:47:07,035 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2021-03-11 22:47:07,035 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-11 22:47:07,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,036 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash 279696508, now seen corresponding path program 1 times [2021-03-11 22:47:07,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190451955] [2021-03-11 22:47:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:47:07,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190451955] [2021-03-11 22:47:07,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:47:07,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308283246] [2021-03-11 22:47:07,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:47:07,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:47:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:47:07,154 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-11 22:47:07,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-11 22:47:07,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,184 INFO L129 PetriNetUnfolder]: 135/220 cut-off events. [2021-03-11 22:47:07,184 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-03-11 22:47:07,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 220 events. 135/220 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 739 event pairs, 0 based on Foata normal form. 57/277 useless extension candidates. Maximal degree in co-relation 394. Up to 60 conditions per place. [2021-03-11 22:47:07,186 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 2 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2021-03-11 22:47:07,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 277 flow [2021-03-11 22:47:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:47:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:47:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-11 22:47:07,194 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-11 22:47:07,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,203 INFO L185 Difference]: Start difference. First operand has 44 places, 64 transitions, 296 flow. Second operand 3 states and 245 transitions. [2021-03-11 22:47:07,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 277 flow [2021-03-11 22:47:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 59 transitions, 175 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-11 22:47:07,208 INFO L241 Difference]: Finished difference. Result has 32 places, 59 transitions, 171 flow [2021-03-11 22:47:07,209 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=32, PETRI_TRANSITIONS=59} [2021-03-11 22:47:07,209 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2021-03-11 22:47:07,210 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 59 transitions, 171 flow [2021-03-11 22:47:07,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,210 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,210 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:47:07,210 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash -25742926, now seen corresponding path program 1 times [2021-03-11 22:47:07,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453390654] [2021-03-11 22:47:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:47:07,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453390654] [2021-03-11 22:47:07,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:47:07,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847480981] [2021-03-11 22:47:07,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:47:07,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:47:07,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:47:07,231 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-11 22:47:07,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 59 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-11 22:47:07,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,245 INFO L129 PetriNetUnfolder]: 130/214 cut-off events. [2021-03-11 22:47:07,245 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-11 22:47:07,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 214 events. 130/214 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 723 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 241. Up to 60 conditions per place. [2021-03-11 22:47:07,246 INFO L132 encePairwiseOnDemand]: 85/87 looper letters, 6 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2021-03-11 22:47:07,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 182 flow [2021-03-11 22:47:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:47:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:47:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-11 22:47:07,248 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-11 22:47:07,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,250 INFO L185 Difference]: Start difference. First operand has 32 places, 59 transitions, 171 flow. Second operand 3 states and 245 transitions. [2021-03-11 22:47:07,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 182 flow [2021-03-11 22:47:07,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:47:07,252 INFO L241 Difference]: Finished difference. Result has 33 places, 58 transitions, 169 flow [2021-03-11 22:47:07,252 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=33, PETRI_TRANSITIONS=58} [2021-03-11 22:47:07,252 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2021-03-11 22:47:07,252 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 58 transitions, 169 flow [2021-03-11 22:47:07,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,253 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:47:07,253 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1382016152, now seen corresponding path program 1 times [2021-03-11 22:47:07,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143249034] [2021-03-11 22:47:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:47:07,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143249034] [2021-03-11 22:47:07,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:47:07,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274678474] [2021-03-11 22:47:07,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:47:07,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:47:07,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:47:07,270 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-11 22:47:07,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 58 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-11 22:47:07,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,283 INFO L129 PetriNetUnfolder]: 106/184 cut-off events. [2021-03-11 22:47:07,283 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-11 22:47:07,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 184 events. 106/184 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 644 event pairs, 0 based on Foata normal form. 5/189 useless extension candidates. Maximal degree in co-relation 216. Up to 60 conditions per place. [2021-03-11 22:47:07,284 INFO L132 encePairwiseOnDemand]: 84/87 looper letters, 5 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2021-03-11 22:47:07,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 175 flow [2021-03-11 22:47:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:47:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:47:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-11 22:47:07,285 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-11 22:47:07,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,287 INFO L185 Difference]: Start difference. First operand has 33 places, 58 transitions, 169 flow. Second operand 3 states and 245 transitions. [2021-03-11 22:47:07,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 175 flow [2021-03-11 22:47:07,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:47:07,289 INFO L241 Difference]: Finished difference. Result has 34 places, 56 transitions, 164 flow [2021-03-11 22:47:07,289 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=34, PETRI_TRANSITIONS=56} [2021-03-11 22:47:07,289 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2021-03-11 22:47:07,289 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 56 transitions, 164 flow [2021-03-11 22:47:07,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,289 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,289 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 22:47:07,290 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2065366578, now seen corresponding path program 1 times [2021-03-11 22:47:07,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785362217] [2021-03-11 22:47:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:47:07,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785362217] [2021-03-11 22:47:07,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:47:07,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983351278] [2021-03-11 22:47:07,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:47:07,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:47:07,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:47:07,304 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-11 22:47:07,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 56 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-11 22:47:07,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,315 INFO L129 PetriNetUnfolder]: 41/94 cut-off events. [2021-03-11 22:47:07,315 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-11 22:47:07,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 94 events. 41/94 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 0 based on Foata normal form. 20/114 useless extension candidates. Maximal degree in co-relation 107. Up to 20 conditions per place. [2021-03-11 22:47:07,316 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 3 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-03-11 22:47:07,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 160 flow [2021-03-11 22:47:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:47:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:47:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-11 22:47:07,317 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-11 22:47:07,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,319 INFO L185 Difference]: Start difference. First operand has 34 places, 56 transitions, 164 flow. Second operand 3 states and 245 transitions. [2021-03-11 22:47:07,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 160 flow [2021-03-11 22:47:07,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:47:07,320 INFO L241 Difference]: Finished difference. Result has 35 places, 52 transitions, 153 flow [2021-03-11 22:47:07,321 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=35, PETRI_TRANSITIONS=52} [2021-03-11 22:47:07,321 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2021-03-11 22:47:07,321 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 52 transitions, 153 flow [2021-03-11 22:47:07,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,321 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 22:47:07,321 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,322 INFO L82 PathProgramCache]: Analyzing trace with hash 128427076, now seen corresponding path program 1 times [2021-03-11 22:47:07,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493559983] [2021-03-11 22:47:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:47:07,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493559983] [2021-03-11 22:47:07,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:47:07,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049475864] [2021-03-11 22:47:07,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:47:07,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:47:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:47:07,338 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-11 22:47:07,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 52 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-11 22:47:07,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,347 INFO L129 PetriNetUnfolder]: 21/64 cut-off events. [2021-03-11 22:47:07,347 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-11 22:47:07,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 64 events. 21/64 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 78. Up to 12 conditions per place. [2021-03-11 22:47:07,348 INFO L132 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-11 22:47:07,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 154 flow [2021-03-11 22:47:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:47:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:47:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-11 22:47:07,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-11 22:47:07,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,351 INFO L185 Difference]: Start difference. First operand has 35 places, 52 transitions, 153 flow. Second operand 3 states and 245 transitions. [2021-03-11 22:47:07,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 154 flow [2021-03-11 22:47:07,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:47:07,352 INFO L241 Difference]: Finished difference. Result has 36 places, 49 transitions, 145 flow [2021-03-11 22:47:07,352 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=36, PETRI_TRANSITIONS=49} [2021-03-11 22:47:07,352 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2021-03-11 22:47:07,352 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 49 transitions, 145 flow [2021-03-11 22:47:07,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,353 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,353 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 22:47:07,353 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,353 INFO L82 PathProgramCache]: Analyzing trace with hash 184407222, now seen corresponding path program 1 times [2021-03-11 22:47:07,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813175846] [2021-03-11 22:47:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:47:07,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813175846] [2021-03-11 22:47:07,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:47:07,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769094249] [2021-03-11 22:47:07,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:47:07,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:47:07,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:47:07,371 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-11 22:47:07,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 49 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-11 22:47:07,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,379 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-11 22:47:07,379 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-11 22:47:07,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 22 events. 0/22 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 6/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:47:07,379 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-03-11 22:47:07,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 22 transitions, 68 flow [2021-03-11 22:47:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:47:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:47:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-11 22:47:07,380 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-11 22:47:07,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-11 22:47:07,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,382 INFO L185 Difference]: Start difference. First operand has 36 places, 49 transitions, 145 flow. Second operand 3 states and 245 transitions. [2021-03-11 22:47:07,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 22 transitions, 68 flow [2021-03-11 22:47:07,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 22 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:47:07,383 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 65 flow [2021-03-11 22:47:07,383 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-11 22:47:07,383 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2021-03-11 22:47:07,383 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 65 flow [2021-03-11 22:47:07,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,383 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,384 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 22:47:07,384 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,384 INFO L82 PathProgramCache]: Analyzing trace with hash -484007824, now seen corresponding path program 1 times [2021-03-11 22:47:07,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158588397] [2021-03-11 22:47:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:07,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:07,452 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:07,469 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:47:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:47:07,489 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:07,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:07,513 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:07,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:07,542 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:07,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158588397] [2021-03-11 22:47:07,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:07,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16673368] [2021-03-11 22:47:07,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:07,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:07,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:07,569 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:07,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 65 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:07,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,669 INFO L129 PetriNetUnfolder]: 387/748 cut-off events. [2021-03-11 22:47:07,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:47:07,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 748 events. 387/748 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4420 event pairs, 129 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 1339. Up to 225 conditions per place. [2021-03-11 22:47:07,674 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 27 selfloop transitions, 6 changer transitions 1/48 dead transitions. [2021-03-11 22:47:07,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 185 flow [2021-03-11 22:47:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:07,676 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:07,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:07,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:07,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:07,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,679 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,679 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 65 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:07,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 185 flow [2021-03-11 22:47:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:47:07,680 INFO L241 Difference]: Finished difference. Result has 51 places, 27 transitions, 111 flow [2021-03-11 22:47:07,681 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=111, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2021-03-11 22:47:07,681 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2021-03-11 22:47:07,681 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 27 transitions, 111 flow [2021-03-11 22:47:07,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,681 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,681 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 22:47:07,681 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 463339368, now seen corresponding path program 2 times [2021-03-11 22:47:07,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973448308] [2021-03-11 22:47:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:07,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:07,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:07,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:07,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:07,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:07,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:07,739 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:07,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:07,754 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:07,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:07,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:07,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:07,797 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:07,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:07,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973448308] [2021-03-11 22:47:07,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:07,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:07,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527863333] [2021-03-11 22:47:07,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:07,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:07,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:07,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:07,822 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:07,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 27 transitions, 111 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:07,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:07,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:07,958 INFO L129 PetriNetUnfolder]: 457/1044 cut-off events. [2021-03-11 22:47:07,959 INFO L130 PetriNetUnfolder]: For 997/1002 co-relation queries the response was YES. [2021-03-11 22:47:07,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1044 events. 457/1044 cut-off events. For 997/1002 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7011 event pairs, 147 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 2645. Up to 301 conditions per place. [2021-03-11 22:47:07,965 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 38 selfloop transitions, 8 changer transitions 2/62 dead transitions. [2021-03-11 22:47:07,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 371 flow [2021-03-11 22:47:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:07,967 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:07,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:07,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:07,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:07,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:07,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,970 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,970 INFO L185 Difference]: Start difference. First operand has 51 places, 27 transitions, 111 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:07,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 371 flow [2021-03-11 22:47:07,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 352 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:07,975 INFO L241 Difference]: Finished difference. Result has 63 places, 34 transitions, 189 flow [2021-03-11 22:47:07,976 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=63, PETRI_TRANSITIONS=34} [2021-03-11 22:47:07,976 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2021-03-11 22:47:07,976 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 34 transitions, 189 flow [2021-03-11 22:47:07,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:07,976 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:07,977 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:07,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 22:47:07,977 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1828458146, now seen corresponding path program 3 times [2021-03-11 22:47:07,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:07,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709661886] [2021-03-11 22:47:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:08,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:08,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:08,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:08,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:08,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:08,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:08,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:08,065 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:08,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:08,083 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:08,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:08,119 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:08,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:08,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709661886] [2021-03-11 22:47:08,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:08,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:08,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69439313] [2021-03-11 22:47:08,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:08,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:08,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:08,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:08,157 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:08,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 34 transitions, 189 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:08,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:08,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:08,316 INFO L129 PetriNetUnfolder]: 542/1454 cut-off events. [2021-03-11 22:47:08,316 INFO L130 PetriNetUnfolder]: For 3425/3605 co-relation queries the response was YES. [2021-03-11 22:47:08,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 1454 events. 542/1454 cut-off events. For 3425/3605 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11645 event pairs, 167 based on Foata normal form. 1/1386 useless extension candidates. Maximal degree in co-relation 4589. Up to 417 conditions per place. [2021-03-11 22:47:08,326 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 47 selfloop transitions, 16 changer transitions 1/78 dead transitions. [2021-03-11 22:47:08,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 611 flow [2021-03-11 22:47:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:08,327 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:08,327 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:08,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:08,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:08,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:08,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,330 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,330 INFO L185 Difference]: Start difference. First operand has 63 places, 34 transitions, 189 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 611 flow [2021-03-11 22:47:08,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 576 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:08,335 INFO L241 Difference]: Finished difference. Result has 75 places, 47 transitions, 365 flow [2021-03-11 22:47:08,335 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=365, PETRI_PLACES=75, PETRI_TRANSITIONS=47} [2021-03-11 22:47:08,335 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2021-03-11 22:47:08,336 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 47 transitions, 365 flow [2021-03-11 22:47:08,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:08,336 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:08,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 22:47:08,336 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:08,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:08,336 INFO L82 PathProgramCache]: Analyzing trace with hash 308660468, now seen corresponding path program 4 times [2021-03-11 22:47:08,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:08,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904888500] [2021-03-11 22:47:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:08,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:08,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:08,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:08,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:08,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:08,377 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:08,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:08,391 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:08,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:08,409 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:08,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:08,439 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:08,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:08,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904888500] [2021-03-11 22:47:08,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:08,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:08,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999062852] [2021-03-11 22:47:08,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:08,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:08,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:08,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:08,462 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:08,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 47 transitions, 365 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:08,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:08,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:08,707 INFO L129 PetriNetUnfolder]: 647/2097 cut-off events. [2021-03-11 22:47:08,707 INFO L130 PetriNetUnfolder]: For 8553/8753 co-relation queries the response was YES. [2021-03-11 22:47:08,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7554 conditions, 2097 events. 647/2097 cut-off events. For 8553/8753 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 20537 event pairs, 198 based on Foata normal form. 1/2005 useless extension candidates. Maximal degree in co-relation 7527. Up to 585 conditions per place. [2021-03-11 22:47:08,721 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 61 selfloop transitions, 28 changer transitions 1/104 dead transitions. [2021-03-11 22:47:08,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 104 transitions, 1066 flow [2021-03-11 22:47:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:08,723 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:08,723 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:08,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:08,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:08,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:08,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,726 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,726 INFO L185 Difference]: Start difference. First operand has 75 places, 47 transitions, 365 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:08,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 104 transitions, 1066 flow [2021-03-11 22:47:08,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 104 transitions, 1032 flow, removed 13 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:08,741 INFO L241 Difference]: Finished difference. Result has 87 places, 70 transitions, 745 flow [2021-03-11 22:47:08,741 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2021-03-11 22:47:08,742 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2021-03-11 22:47:08,742 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 745 flow [2021-03-11 22:47:08,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,742 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:08,742 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:08,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 22:47:08,742 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:08,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1098154730, now seen corresponding path program 5 times [2021-03-11 22:47:08,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:08,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13255395] [2021-03-11 22:47:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:08,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:08,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:08,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:08,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:08,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:47:08,812 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:08,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:08,829 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:08,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:08,851 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:08,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:08,879 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:08,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:08,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13255395] [2021-03-11 22:47:08,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:08,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:08,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559785829] [2021-03-11 22:47:08,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:08,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:08,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:08,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:08,903 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:08,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 745 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:08,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:08,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:08,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:09,209 INFO L129 PetriNetUnfolder]: 763/2853 cut-off events. [2021-03-11 22:47:09,209 INFO L130 PetriNetUnfolder]: For 17128/17451 co-relation queries the response was YES. [2021-03-11 22:47:09,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11367 conditions, 2853 events. 763/2853 cut-off events. For 17128/17451 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 31786 event pairs, 250 based on Foata normal form. 1/2725 useless extension candidates. Maximal degree in co-relation 11334. Up to 806 conditions per place. [2021-03-11 22:47:09,232 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 97 selfloop transitions, 36 changer transitions 1/148 dead transitions. [2021-03-11 22:47:09,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 1985 flow [2021-03-11 22:47:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:09,234 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:09,234 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:09,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:09,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:09,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:09,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,236 INFO L185 Difference]: Start difference. First operand has 87 places, 70 transitions, 745 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:09,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 1985 flow [2021-03-11 22:47:09,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 148 transitions, 1954 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:09,261 INFO L241 Difference]: Finished difference. Result has 99 places, 97 transitions, 1281 flow [2021-03-11 22:47:09,261 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1281, PETRI_PLACES=99, PETRI_TRANSITIONS=97} [2021-03-11 22:47:09,261 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2021-03-11 22:47:09,261 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 97 transitions, 1281 flow [2021-03-11 22:47:09,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,261 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:09,261 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:09,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 22:47:09,262 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:09,262 INFO L82 PathProgramCache]: Analyzing trace with hash -837344484, now seen corresponding path program 6 times [2021-03-11 22:47:09,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:09,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764438525] [2021-03-11 22:47:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:09,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:09,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:09,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:09,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:09,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:09,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:47:09,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:47:09,308 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:47:09,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:47:09,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:09,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:09,364 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:09,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:09,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764438525] [2021-03-11 22:47:09,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:09,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:09,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995771146] [2021-03-11 22:47:09,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:09,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:09,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:09,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:09,388 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:09,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 97 transitions, 1281 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:09,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:09,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:09,743 INFO L129 PetriNetUnfolder]: 784/3094 cut-off events. [2021-03-11 22:47:09,743 INFO L130 PetriNetUnfolder]: For 26557/27065 co-relation queries the response was YES. [2021-03-11 22:47:09,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13937 conditions, 3094 events. 784/3094 cut-off events. For 26557/27065 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35692 event pairs, 290 based on Foata normal form. 3/2946 useless extension candidates. Maximal degree in co-relation 13898. Up to 780 conditions per place. [2021-03-11 22:47:09,771 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 101 selfloop transitions, 49 changer transitions 1/165 dead transitions. [2021-03-11 22:47:09,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 2510 flow [2021-03-11 22:47:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:09,773 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:09,773 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:09,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:09,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:09,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:09,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,775 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,775 INFO L185 Difference]: Start difference. First operand has 99 places, 97 transitions, 1281 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:09,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 2510 flow [2021-03-11 22:47:09,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 165 transitions, 2424 flow, removed 32 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:09,815 INFO L241 Difference]: Finished difference. Result has 111 places, 118 transitions, 1766 flow [2021-03-11 22:47:09,816 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1766, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2021-03-11 22:47:09,816 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2021-03-11 22:47:09,816 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 1766 flow [2021-03-11 22:47:09,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:09,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:09,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 22:47:09,819 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:09,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1776996602, now seen corresponding path program 7 times [2021-03-11 22:47:09,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:09,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325809371] [2021-03-11 22:47:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:09,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:09,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:09,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:09,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:47:09,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:09,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 22:47:09,880 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:09,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:09,898 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:09,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:09,920 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:09,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:09,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325809371] [2021-03-11 22:47:09,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:09,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:09,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026354887] [2021-03-11 22:47:09,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:09,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:09,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:09,947 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:09,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 1766 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:09,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:09,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:09,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:10,335 INFO L129 PetriNetUnfolder]: 775/3327 cut-off events. [2021-03-11 22:47:10,336 INFO L130 PetriNetUnfolder]: For 38685/39744 co-relation queries the response was YES. [2021-03-11 22:47:10,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16718 conditions, 3327 events. 775/3327 cut-off events. For 38685/39744 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 39425 event pairs, 382 based on Foata normal form. 5/3224 useless extension candidates. Maximal degree in co-relation 16673. Up to 905 conditions per place. [2021-03-11 22:47:10,370 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 108 selfloop transitions, 65 changer transitions 3/190 dead transitions. [2021-03-11 22:47:10,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 190 transitions, 3128 flow [2021-03-11 22:47:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:10,372 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:10,372 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:10,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:10,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:10,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:10,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:10,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:10,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:10,376 INFO L185 Difference]: Start difference. First operand has 111 places, 118 transitions, 1766 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:10,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 190 transitions, 3128 flow [2021-03-11 22:47:10,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 190 transitions, 2978 flow, removed 51 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:10,432 INFO L241 Difference]: Finished difference. Result has 123 places, 132 transitions, 2090 flow [2021-03-11 22:47:10,432 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2090, PETRI_PLACES=123, PETRI_TRANSITIONS=132} [2021-03-11 22:47:10,432 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2021-03-11 22:47:10,433 INFO L480 AbstractCegarLoop]: Abstraction has has 123 places, 132 transitions, 2090 flow [2021-03-11 22:47:10,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:10,433 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:10,433 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:10,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 22:47:10,433 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1809759504, now seen corresponding path program 8 times [2021-03-11 22:47:10,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:10,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038160905] [2021-03-11 22:47:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:10,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:10,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:10,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:10,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:10,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:10,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:10,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:10,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:10,475 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:10,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:10,488 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:10,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:10,510 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:10,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:10,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:10,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:10,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038160905] [2021-03-11 22:47:10,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:10,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:10,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893710835] [2021-03-11 22:47:10,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:10,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:10,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:10,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:10,559 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:10,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 132 transitions, 2090 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:10,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:10,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:10,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:11,001 INFO L129 PetriNetUnfolder]: 818/3899 cut-off events. [2021-03-11 22:47:11,001 INFO L130 PetriNetUnfolder]: For 52528/54869 co-relation queries the response was YES. [2021-03-11 22:47:11,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20452 conditions, 3899 events. 818/3899 cut-off events. For 52528/54869 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 49388 event pairs, 315 based on Foata normal form. 10/3735 useless extension candidates. Maximal degree in co-relation 20401. Up to 994 conditions per place. [2021-03-11 22:47:11,068 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 98 selfloop transitions, 86 changer transitions 1/199 dead transitions. [2021-03-11 22:47:11,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 199 transitions, 3530 flow [2021-03-11 22:47:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:11,070 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:11,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:11,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:11,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:11,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:11,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,073 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,073 INFO L185 Difference]: Start difference. First operand has 123 places, 132 transitions, 2090 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:11,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 199 transitions, 3530 flow [2021-03-11 22:47:11,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 199 transitions, 3371 flow, removed 47 selfloop flow, removed 3 redundant places. [2021-03-11 22:47:11,147 INFO L241 Difference]: Finished difference. Result has 134 places, 157 transitions, 2826 flow [2021-03-11 22:47:11,147 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2826, PETRI_PLACES=134, PETRI_TRANSITIONS=157} [2021-03-11 22:47:11,147 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 90 predicate places. [2021-03-11 22:47:11,147 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 157 transitions, 2826 flow [2021-03-11 22:47:11,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,148 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:11,148 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:11,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 22:47:11,148 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash 259975004, now seen corresponding path program 9 times [2021-03-11 22:47:11,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:11,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067242172] [2021-03-11 22:47:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:11,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:11,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:11,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:11,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:11,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:11,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:11,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:11,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:47:11,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 22:47:11,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:47:11,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:11,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:11,225 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:11,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:11,246 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:11,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:11,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067242172] [2021-03-11 22:47:11,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:11,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:11,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071747573] [2021-03-11 22:47:11,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:11,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:11,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:11,312 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:11,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 157 transitions, 2826 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:11,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:11,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:11,966 INFO L129 PetriNetUnfolder]: 820/4072 cut-off events. [2021-03-11 22:47:11,966 INFO L130 PetriNetUnfolder]: For 69723/71947 co-relation queries the response was YES. [2021-03-11 22:47:11,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23224 conditions, 4072 events. 820/4072 cut-off events. For 69723/71947 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 52429 event pairs, 381 based on Foata normal form. 8/3875 useless extension candidates. Maximal degree in co-relation 23168. Up to 1057 conditions per place. [2021-03-11 22:47:11,994 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 124 selfloop transitions, 97 changer transitions 2/237 dead transitions. [2021-03-11 22:47:11,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 237 transitions, 4536 flow [2021-03-11 22:47:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:11,995 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:11,995 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:11,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:11,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:11,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:11,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,998 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:11,998 INFO L185 Difference]: Start difference. First operand has 134 places, 157 transitions, 2826 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:11,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 237 transitions, 4536 flow [2021-03-11 22:47:12,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 237 transitions, 4373 flow, removed 55 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:12,101 INFO L241 Difference]: Finished difference. Result has 146 places, 174 transitions, 3333 flow [2021-03-11 22:47:12,101 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3333, PETRI_PLACES=146, PETRI_TRANSITIONS=174} [2021-03-11 22:47:12,102 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2021-03-11 22:47:12,102 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 174 transitions, 3333 flow [2021-03-11 22:47:12,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:12,102 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:12,102 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:12,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 22:47:12,102 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:12,103 INFO L82 PathProgramCache]: Analyzing trace with hash -374044930, now seen corresponding path program 10 times [2021-03-11 22:47:12,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:12,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983228237] [2021-03-11 22:47:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:12,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:12,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:12,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:12,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:12,129 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:12,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:12,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:12,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:12,152 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:12,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:12,171 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:12,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:12,196 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:12,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:12,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983228237] [2021-03-11 22:47:12,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:12,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:12,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163102829] [2021-03-11 22:47:12,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:12,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:12,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:12,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:12,218 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:12,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 174 transitions, 3333 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:12,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:12,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:12,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:13,069 INFO L129 PetriNetUnfolder]: 807/4871 cut-off events. [2021-03-11 22:47:13,070 INFO L130 PetriNetUnfolder]: For 86320/88801 co-relation queries the response was YES. [2021-03-11 22:47:13,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27382 conditions, 4871 events. 807/4871 cut-off events. For 86320/88801 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 68197 event pairs, 373 based on Foata normal form. 14/4670 useless extension candidates. Maximal degree in co-relation 27320. Up to 1121 conditions per place. [2021-03-11 22:47:13,116 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 124 selfloop transitions, 109 changer transitions 1/248 dead transitions. [2021-03-11 22:47:13,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 248 transitions, 5033 flow [2021-03-11 22:47:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:13,119 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:13,119 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:13,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:13,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:13,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:13,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:13,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:13,125 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:13,126 INFO L185 Difference]: Start difference. First operand has 146 places, 174 transitions, 3333 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:13,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 248 transitions, 5033 flow [2021-03-11 22:47:13,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 248 transitions, 4874 flow, removed 47 selfloop flow, removed 3 redundant places. [2021-03-11 22:47:13,345 INFO L241 Difference]: Finished difference. Result has 157 places, 199 transitions, 4084 flow [2021-03-11 22:47:13,345 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4084, PETRI_PLACES=157, PETRI_TRANSITIONS=199} [2021-03-11 22:47:13,345 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2021-03-11 22:47:13,345 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 199 transitions, 4084 flow [2021-03-11 22:47:13,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:13,346 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:13,346 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:13,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 22:47:13,346 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1986759782, now seen corresponding path program 11 times [2021-03-11 22:47:13,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:13,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881003570] [2021-03-11 22:47:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:13,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:13,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:13,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:13,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:13,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:13,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:13,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:13,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:47:13,391 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:13,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:13,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:13,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:13,423 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:13,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:13,448 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:13,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:13,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881003570] [2021-03-11 22:47:13,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:13,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:13,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431080477] [2021-03-11 22:47:13,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:13,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:13,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:13,471 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:13,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 199 transitions, 4084 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:13,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:13,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:13,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:14,222 INFO L129 PetriNetUnfolder]: 795/4947 cut-off events. [2021-03-11 22:47:14,222 INFO L130 PetriNetUnfolder]: For 99809/102444 co-relation queries the response was YES. [2021-03-11 22:47:14,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29337 conditions, 4947 events. 795/4947 cut-off events. For 99809/102444 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 69578 event pairs, 462 based on Foata normal form. 18/4741 useless extension candidates. Maximal degree in co-relation 29270. Up to 995 conditions per place. [2021-03-11 22:47:14,322 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 148 selfloop transitions, 117 changer transitions 2/281 dead transitions. [2021-03-11 22:47:14,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 281 transitions, 6200 flow [2021-03-11 22:47:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:14,324 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:14,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:14,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:14,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:14,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:14,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:14,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:14,326 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:14,326 INFO L185 Difference]: Start difference. First operand has 157 places, 199 transitions, 4084 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 281 transitions, 6200 flow [2021-03-11 22:47:14,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 281 transitions, 6010 flow, removed 63 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:14,515 INFO L241 Difference]: Finished difference. Result has 169 places, 216 transitions, 4738 flow [2021-03-11 22:47:14,516 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4738, PETRI_PLACES=169, PETRI_TRANSITIONS=216} [2021-03-11 22:47:14,516 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 125 predicate places. [2021-03-11 22:47:14,516 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 216 transitions, 4738 flow [2021-03-11 22:47:14,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:14,516 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:14,516 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:14,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 22:47:14,517 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1256517536, now seen corresponding path program 12 times [2021-03-11 22:47:14,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:14,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856320006] [2021-03-11 22:47:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:14,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:14,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:14,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:14,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:14,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:14,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:14,555 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:14,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:14,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:14,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:14,582 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:14,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:14,598 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:14,619 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:14,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:14,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856320006] [2021-03-11 22:47:14,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:14,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:14,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392111015] [2021-03-11 22:47:14,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:14,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:14,640 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:14,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 216 transitions, 4738 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:14,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:14,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:14,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:15,544 INFO L129 PetriNetUnfolder]: 764/5262 cut-off events. [2021-03-11 22:47:15,544 INFO L130 PetriNetUnfolder]: For 120448/123936 co-relation queries the response was YES. [2021-03-11 22:47:15,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32117 conditions, 5262 events. 764/5262 cut-off events. For 120448/123936 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 76446 event pairs, 421 based on Foata normal form. 26/5043 useless extension candidates. Maximal degree in co-relation 32044. Up to 1188 conditions per place. [2021-03-11 22:47:15,590 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 130 selfloop transitions, 137 changer transitions 1/282 dead transitions. [2021-03-11 22:47:15,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 282 transitions, 6608 flow [2021-03-11 22:47:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:15,591 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:15,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:15,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:15,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:15,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:15,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:15,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:15,594 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:15,594 INFO L185 Difference]: Start difference. First operand has 169 places, 216 transitions, 4738 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:15,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 282 transitions, 6608 flow [2021-03-11 22:47:15,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 282 transitions, 6376 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:15,947 INFO L241 Difference]: Finished difference. Result has 181 places, 236 transitions, 5524 flow [2021-03-11 22:47:15,947 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4574, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5524, PETRI_PLACES=181, PETRI_TRANSITIONS=236} [2021-03-11 22:47:15,947 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 137 predicate places. [2021-03-11 22:47:15,947 INFO L480 AbstractCegarLoop]: Abstraction has has 181 places, 236 transitions, 5524 flow [2021-03-11 22:47:15,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:15,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:15,948 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:15,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 22:47:15,948 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:15,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1599201774, now seen corresponding path program 13 times [2021-03-11 22:47:15,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:15,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780179555] [2021-03-11 22:47:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:15,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:15,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:15,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:15,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:15,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:15,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:15,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:15,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:47:15,978 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:15,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:15,991 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:15,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:16,008 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:16,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:16,031 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:16,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:16,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780179555] [2021-03-11 22:47:16,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:16,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:16,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763210734] [2021-03-11 22:47:16,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:16,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:16,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:16,068 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:16,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 236 transitions, 5524 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:16,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:16,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:16,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:17,026 INFO L129 PetriNetUnfolder]: 742/5426 cut-off events. [2021-03-11 22:47:17,026 INFO L130 PetriNetUnfolder]: For 138428/142137 co-relation queries the response was YES. [2021-03-11 22:47:17,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34440 conditions, 5426 events. 742/5426 cut-off events. For 138428/142137 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 80137 event pairs, 447 based on Foata normal form. 30/5179 useless extension candidates. Maximal degree in co-relation 34361. Up to 1068 conditions per place. [2021-03-11 22:47:17,064 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 167 selfloop transitions, 142 changer transitions 1/324 dead transitions. [2021-03-11 22:47:17,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 324 transitions, 8100 flow [2021-03-11 22:47:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:17,066 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:17,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:17,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:17,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:17,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:17,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:17,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:17,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:17,072 INFO L185 Difference]: Start difference. First operand has 181 places, 236 transitions, 5524 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:17,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 324 transitions, 8100 flow [2021-03-11 22:47:17,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 324 transitions, 7842 flow, removed 97 selfloop flow, removed 2 redundant places. [2021-03-11 22:47:17,387 INFO L241 Difference]: Finished difference. Result has 192 places, 262 transitions, 6402 flow [2021-03-11 22:47:17,387 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=5342, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6402, PETRI_PLACES=192, PETRI_TRANSITIONS=262} [2021-03-11 22:47:17,387 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2021-03-11 22:47:17,388 INFO L480 AbstractCegarLoop]: Abstraction has has 192 places, 262 transitions, 6402 flow [2021-03-11 22:47:17,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:17,388 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:17,388 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:17,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 22:47:17,388 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:17,388 INFO L82 PathProgramCache]: Analyzing trace with hash -520138242, now seen corresponding path program 14 times [2021-03-11 22:47:17,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:17,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523917091] [2021-03-11 22:47:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:17,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:17,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:17,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:17,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:17,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:17,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:17,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:17,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:17,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:17,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:17,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:17,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:17,468 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:17,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:17,551 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:17,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:17,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523917091] [2021-03-11 22:47:17,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:17,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:17,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404209200] [2021-03-11 22:47:17,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:17,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:17,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:17,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:17,573 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:17,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 262 transitions, 6402 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:17,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:17,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:17,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:18,419 INFO L129 PetriNetUnfolder]: 740/5488 cut-off events. [2021-03-11 22:47:18,419 INFO L130 PetriNetUnfolder]: For 151548/154492 co-relation queries the response was YES. [2021-03-11 22:47:18,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35560 conditions, 5488 events. 740/5488 cut-off events. For 151548/154492 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 81267 event pairs, 513 based on Foata normal form. 40/5255 useless extension candidates. Maximal degree in co-relation 35476. Up to 1188 conditions per place. [2021-03-11 22:47:18,471 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 163 selfloop transitions, 167 changer transitions 1/345 dead transitions. [2021-03-11 22:47:18,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 345 transitions, 8978 flow [2021-03-11 22:47:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:18,474 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:18,474 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:18,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:18,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:18,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:18,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:18,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:18,476 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:18,476 INFO L185 Difference]: Start difference. First operand has 192 places, 262 transitions, 6402 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:18,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 345 transitions, 8978 flow [2021-03-11 22:47:18,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 345 transitions, 8634 flow, removed 67 selfloop flow, removed 3 redundant places. [2021-03-11 22:47:18,942 INFO L241 Difference]: Finished difference. Result has 202 places, 279 transitions, 7060 flow [2021-03-11 22:47:18,943 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6138, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7060, PETRI_PLACES=202, PETRI_TRANSITIONS=279} [2021-03-11 22:47:18,943 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 158 predicate places. [2021-03-11 22:47:18,943 INFO L480 AbstractCegarLoop]: Abstraction has has 202 places, 279 transitions, 7060 flow [2021-03-11 22:47:18,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:18,943 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:18,943 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:18,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 22:47:18,943 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:18,944 INFO L82 PathProgramCache]: Analyzing trace with hash -750271980, now seen corresponding path program 15 times [2021-03-11 22:47:18,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:18,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31837034] [2021-03-11 22:47:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:18,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:18,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:18,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:18,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:18,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:18,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:47:18,967 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:18,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:18,994 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:18,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:19,006 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:19,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:19,024 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:19,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:19,048 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:19,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:19,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31837034] [2021-03-11 22:47:19,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:19,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:19,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620693881] [2021-03-11 22:47:19,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:19,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:19,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:19,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:19,072 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:19,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 279 transitions, 7060 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:19,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:19,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:19,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:20,243 INFO L129 PetriNetUnfolder]: 748/5681 cut-off events. [2021-03-11 22:47:20,243 INFO L130 PetriNetUnfolder]: For 168133/172173 co-relation queries the response was YES. [2021-03-11 22:47:20,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38251 conditions, 5681 events. 748/5681 cut-off events. For 168133/172173 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 84957 event pairs, 500 based on Foata normal form. 48/5442 useless extension candidates. Maximal degree in co-relation 38162. Up to 1167 conditions per place. [2021-03-11 22:47:20,294 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 154 selfloop transitions, 177 changer transitions 1/346 dead transitions. [2021-03-11 22:47:20,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 346 transitions, 9420 flow [2021-03-11 22:47:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:20,296 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:20,296 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:20,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:20,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:20,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:20,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:20,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:20,298 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:20,298 INFO L185 Difference]: Start difference. First operand has 202 places, 279 transitions, 7060 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:20,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 346 transitions, 9420 flow [2021-03-11 22:47:20,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 346 transitions, 9074 flow, removed 63 selfloop flow, removed 3 redundant places. [2021-03-11 22:47:20,760 INFO L241 Difference]: Finished difference. Result has 212 places, 308 transitions, 8175 flow [2021-03-11 22:47:20,760 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6768, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8175, PETRI_PLACES=212, PETRI_TRANSITIONS=308} [2021-03-11 22:47:20,760 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 168 predicate places. [2021-03-11 22:47:20,760 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 308 transitions, 8175 flow [2021-03-11 22:47:20,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:20,761 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:20,761 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:20,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 22:47:20,761 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1133935106, now seen corresponding path program 16 times [2021-03-11 22:47:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:20,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548605788] [2021-03-11 22:47:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:20,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:20,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:20,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:20,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:20,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:20,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:20,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:20,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:20,801 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:47:20,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:47:20,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:20,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:20,835 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:20,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:20,858 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:20,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:20,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548605788] [2021-03-11 22:47:20,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:20,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:20,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580727114] [2021-03-11 22:47:20,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:20,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:20,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:20,885 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:20,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 308 transitions, 8175 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:20,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:20,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:20,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:22,163 INFO L129 PetriNetUnfolder]: 743/5834 cut-off events. [2021-03-11 22:47:22,164 INFO L130 PetriNetUnfolder]: For 179995/184684 co-relation queries the response was YES. [2021-03-11 22:47:22,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39533 conditions, 5834 events. 743/5834 cut-off events. For 179995/184684 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 88161 event pairs, 424 based on Foata normal form. 44/5563 useless extension candidates. Maximal degree in co-relation 39439. Up to 1188 conditions per place. [2021-03-11 22:47:22,204 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 141 selfloop transitions, 224 changer transitions 1/380 dead transitions. [2021-03-11 22:47:22,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 380 transitions, 10698 flow [2021-03-11 22:47:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:22,206 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:22,206 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:22,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:22,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:22,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:22,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:22,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:22,207 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:22,208 INFO L185 Difference]: Start difference. First operand has 212 places, 308 transitions, 8175 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:22,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 380 transitions, 10698 flow [2021-03-11 22:47:22,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 380 transitions, 10352 flow, removed 68 selfloop flow, removed 3 redundant places. [2021-03-11 22:47:22,666 INFO L241 Difference]: Finished difference. Result has 221 places, 339 transitions, 9344 flow [2021-03-11 22:47:22,666 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=7908, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9344, PETRI_PLACES=221, PETRI_TRANSITIONS=339} [2021-03-11 22:47:22,666 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 177 predicate places. [2021-03-11 22:47:22,666 INFO L480 AbstractCegarLoop]: Abstraction has has 221 places, 339 transitions, 9344 flow [2021-03-11 22:47:22,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:22,666 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:22,666 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:22,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 22:47:22,667 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1571326026, now seen corresponding path program 17 times [2021-03-11 22:47:22,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:22,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243625056] [2021-03-11 22:47:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:22,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:22,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:22,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:22,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:22,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:22,696 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:22,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:22,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:22,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:22,717 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:22,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:22,733 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:22,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:22,757 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:22,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:22,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243625056] [2021-03-11 22:47:22,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:22,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:22,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746933175] [2021-03-11 22:47:22,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:22,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:22,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:22,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:22,781 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:22,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 339 transitions, 9344 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:22,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:22,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:22,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:23,884 INFO L129 PetriNetUnfolder]: 734/5766 cut-off events. [2021-03-11 22:47:23,884 INFO L130 PetriNetUnfolder]: For 185902/190500 co-relation queries the response was YES. [2021-03-11 22:47:23,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40100 conditions, 5766 events. 734/5766 cut-off events. For 185902/190500 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 86789 event pairs, 465 based on Foata normal form. 49/5526 useless extension candidates. Maximal degree in co-relation 40002. Up to 1188 conditions per place. [2021-03-11 22:47:23,940 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 133 selfloop transitions, 241 changer transitions 3/391 dead transitions. [2021-03-11 22:47:23,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 391 transitions, 11378 flow [2021-03-11 22:47:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:23,941 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:23,941 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:23,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:23,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:23,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:23,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:23,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:23,943 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:23,943 INFO L185 Difference]: Start difference. First operand has 221 places, 339 transitions, 9344 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:23,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 391 transitions, 11378 flow [2021-03-11 22:47:24,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 391 transitions, 10930 flow, removed 52 selfloop flow, removed 4 redundant places. [2021-03-11 22:47:24,654 INFO L241 Difference]: Finished difference. Result has 230 places, 350 transitions, 10012 flow [2021-03-11 22:47:24,654 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8936, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10012, PETRI_PLACES=230, PETRI_TRANSITIONS=350} [2021-03-11 22:47:24,654 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 186 predicate places. [2021-03-11 22:47:24,654 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 350 transitions, 10012 flow [2021-03-11 22:47:24,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:24,655 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:24,655 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:24,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 22:47:24,655 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash 786075130, now seen corresponding path program 18 times [2021-03-11 22:47:24,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:24,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118965911] [2021-03-11 22:47:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:24,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:24,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:24,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:24,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:24,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:24,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:24,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:47:24,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:47:24,686 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:24,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:24,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:47:24,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:47:24,727 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:24,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:24,752 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:24,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:24,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118965911] [2021-03-11 22:47:24,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:24,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:24,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871004426] [2021-03-11 22:47:24,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:24,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:24,776 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:24,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 350 transitions, 10012 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:24,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:24,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:24,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:26,159 INFO L129 PetriNetUnfolder]: 730/5897 cut-off events. [2021-03-11 22:47:26,160 INFO L130 PetriNetUnfolder]: For 193434/198644 co-relation queries the response was YES. [2021-03-11 22:47:26,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41041 conditions, 5897 events. 730/5897 cut-off events. For 193434/198644 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 89606 event pairs, 433 based on Foata normal form. 40/5613 useless extension candidates. Maximal degree in co-relation 40938. Up to 1188 conditions per place. [2021-03-11 22:47:26,222 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 178 selfloop transitions, 204 changer transitions 1/397 dead transitions. [2021-03-11 22:47:26,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 397 transitions, 11964 flow [2021-03-11 22:47:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:26,224 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:26,224 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:26,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:26,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:26,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:26,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:26,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:26,226 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:26,226 INFO L185 Difference]: Start difference. First operand has 230 places, 350 transitions, 10012 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 397 transitions, 11964 flow [2021-03-11 22:47:27,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 397 transitions, 11574 flow, removed 83 selfloop flow, removed 4 redundant places. [2021-03-11 22:47:27,058 INFO L241 Difference]: Finished difference. Result has 238 places, 363 transitions, 10641 flow [2021-03-11 22:47:27,058 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=9721, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10641, PETRI_PLACES=238, PETRI_TRANSITIONS=363} [2021-03-11 22:47:27,058 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2021-03-11 22:47:27,058 INFO L480 AbstractCegarLoop]: Abstraction has has 238 places, 363 transitions, 10641 flow [2021-03-11 22:47:27,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:27,059 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:27,059 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:27,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 22:47:27,059 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:27,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:27,059 INFO L82 PathProgramCache]: Analyzing trace with hash 938141458, now seen corresponding path program 19 times [2021-03-11 22:47:27,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:27,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466679472] [2021-03-11 22:47:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:27,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:27,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:27,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:27,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:27,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:27,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:27,086 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:27,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:27,096 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:27,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:27,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:27,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:27,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:27,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:27,154 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:27,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:27,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466679472] [2021-03-11 22:47:27,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:27,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:27,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120355890] [2021-03-11 22:47:27,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:27,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:27,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:27,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:27,179 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:27,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 363 transitions, 10641 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:27,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:27,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:27,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:28,464 INFO L129 PetriNetUnfolder]: 719/5906 cut-off events. [2021-03-11 22:47:28,464 INFO L130 PetriNetUnfolder]: For 195833/201012 co-relation queries the response was YES. [2021-03-11 22:47:28,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41485 conditions, 5906 events. 719/5906 cut-off events. For 195833/201012 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 89801 event pairs, 472 based on Foata normal form. 55/5657 useless extension candidates. Maximal degree in co-relation 41379. Up to 1188 conditions per place. [2021-03-11 22:47:28,517 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 133 selfloop transitions, 259 changer transitions 1/407 dead transitions. [2021-03-11 22:47:28,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 407 transitions, 12521 flow [2021-03-11 22:47:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:28,519 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:28,519 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:28,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:28,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:28,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:28,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:28,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:28,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:28,520 INFO L185 Difference]: Start difference. First operand has 238 places, 363 transitions, 10641 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 407 transitions, 12521 flow [2021-03-11 22:47:29,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 407 transitions, 12094 flow, removed 41 selfloop flow, removed 4 redundant places. [2021-03-11 22:47:29,343 INFO L241 Difference]: Finished difference. Result has 246 places, 371 transitions, 11127 flow [2021-03-11 22:47:29,343 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10242, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11127, PETRI_PLACES=246, PETRI_TRANSITIONS=371} [2021-03-11 22:47:29,343 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 202 predicate places. [2021-03-11 22:47:29,343 INFO L480 AbstractCegarLoop]: Abstraction has has 246 places, 371 transitions, 11127 flow [2021-03-11 22:47:29,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:29,343 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:29,343 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:29,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 22:47:29,343 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:29,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:29,344 INFO L82 PathProgramCache]: Analyzing trace with hash -170678226, now seen corresponding path program 20 times [2021-03-11 22:47:29,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:29,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938331982] [2021-03-11 22:47:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:29,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:29,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:29,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:29,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:29,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:29,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:29,366 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:29,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:29,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:29,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:29,386 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:29,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:29,402 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:29,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:29,425 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:29,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:29,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938331982] [2021-03-11 22:47:29,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:29,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:29,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596454535] [2021-03-11 22:47:29,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:29,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:29,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:29,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:29,450 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:29,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 371 transitions, 11127 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:29,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:29,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:29,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:30,664 INFO L129 PetriNetUnfolder]: 719/5920 cut-off events. [2021-03-11 22:47:30,665 INFO L130 PetriNetUnfolder]: For 201840/207120 co-relation queries the response was YES. [2021-03-11 22:47:30,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42031 conditions, 5920 events. 719/5920 cut-off events. For 201840/207120 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 90201 event pairs, 462 based on Foata normal form. 59/5665 useless extension candidates. Maximal degree in co-relation 41921. Up to 1188 conditions per place. [2021-03-11 22:47:30,720 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 134 selfloop transitions, 259 changer transitions 2/409 dead transitions. [2021-03-11 22:47:30,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 409 transitions, 12879 flow [2021-03-11 22:47:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:30,721 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:30,721 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:30,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:30,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:30,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:30,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:30,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:30,723 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:30,723 INFO L185 Difference]: Start difference. First operand has 246 places, 371 transitions, 11127 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:30,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 409 transitions, 12879 flow [2021-03-11 22:47:31,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 409 transitions, 12342 flow, removed 72 selfloop flow, removed 4 redundant places. [2021-03-11 22:47:31,576 INFO L241 Difference]: Finished difference. Result has 254 places, 384 transitions, 11683 flow [2021-03-11 22:47:31,576 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10666, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11683, PETRI_PLACES=254, PETRI_TRANSITIONS=384} [2021-03-11 22:47:31,576 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 210 predicate places. [2021-03-11 22:47:31,577 INFO L480 AbstractCegarLoop]: Abstraction has has 254 places, 384 transitions, 11683 flow [2021-03-11 22:47:31,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:31,577 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:31,577 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:31,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 22:47:31,577 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:31,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1385636208, now seen corresponding path program 21 times [2021-03-11 22:47:31,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:31,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333173515] [2021-03-11 22:47:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:31,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:31,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:31,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:31,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:31,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:31,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:31,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:31,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:31,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:31,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:31,630 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:31,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:31,649 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:31,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:31,673 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:31,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:31,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333173515] [2021-03-11 22:47:31,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:31,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:31,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452303995] [2021-03-11 22:47:31,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:31,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:31,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:31,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:31,702 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:31,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 384 transitions, 11683 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:31,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:31,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:31,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:32,994 INFO L129 PetriNetUnfolder]: 715/5914 cut-off events. [2021-03-11 22:47:32,995 INFO L130 PetriNetUnfolder]: For 198365/203645 co-relation queries the response was YES. [2021-03-11 22:47:33,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41916 conditions, 5914 events. 715/5914 cut-off events. For 198365/203645 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 90175 event pairs, 472 based on Foata normal form. 59/5667 useless extension candidates. Maximal degree in co-relation 41802. Up to 1188 conditions per place. [2021-03-11 22:47:33,054 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 142 selfloop transitions, 259 changer transitions 1/416 dead transitions. [2021-03-11 22:47:33,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 416 transitions, 13275 flow [2021-03-11 22:47:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:33,055 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:33,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:33,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:33,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:33,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:33,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:33,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:33,057 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:33,057 INFO L185 Difference]: Start difference. First operand has 254 places, 384 transitions, 11683 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:33,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 416 transitions, 13275 flow [2021-03-11 22:47:33,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 416 transitions, 12788 flow, removed 42 selfloop flow, removed 6 redundant places. [2021-03-11 22:47:34,002 INFO L241 Difference]: Finished difference. Result has 259 places, 390 transitions, 11969 flow [2021-03-11 22:47:34,002 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11241, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11969, PETRI_PLACES=259, PETRI_TRANSITIONS=390} [2021-03-11 22:47:34,002 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places. [2021-03-11 22:47:34,002 INFO L480 AbstractCegarLoop]: Abstraction has has 259 places, 390 transitions, 11969 flow [2021-03-11 22:47:34,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:34,002 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:34,003 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:34,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 22:47:34,003 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash 608071848, now seen corresponding path program 22 times [2021-03-11 22:47:34,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:34,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883121240] [2021-03-11 22:47:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:34,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:34,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:34,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:34,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:34,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:34,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:34,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:34,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:34,043 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:34,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:34,053 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:47:34,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:47:34,089 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:34,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:34,110 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:34,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:34,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883121240] [2021-03-11 22:47:34,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:34,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:34,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052835633] [2021-03-11 22:47:34,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:34,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:34,149 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:34,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 390 transitions, 11969 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:34,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:34,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:34,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:35,463 INFO L129 PetriNetUnfolder]: 708/5956 cut-off events. [2021-03-11 22:47:35,463 INFO L130 PetriNetUnfolder]: For 199118/204383 co-relation queries the response was YES. [2021-03-11 22:47:35,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42233 conditions, 5956 events. 708/5956 cut-off events. For 199118/204383 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 91108 event pairs, 463 based on Foata normal form. 59/5701 useless extension candidates. Maximal degree in co-relation 42118. Up to 1188 conditions per place. [2021-03-11 22:47:35,532 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 138 selfloop transitions, 265 changer transitions 1/418 dead transitions. [2021-03-11 22:47:35,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 418 transitions, 13465 flow [2021-03-11 22:47:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:35,533 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:35,534 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:35,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:35,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:35,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:35,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:35,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:35,535 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:35,535 INFO L185 Difference]: Start difference. First operand has 259 places, 390 transitions, 11969 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:35,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 418 transitions, 13465 flow [2021-03-11 22:47:36,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 418 transitions, 12926 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-03-11 22:47:36,418 INFO L241 Difference]: Finished difference. Result has 265 places, 396 transitions, 12226 flow [2021-03-11 22:47:36,419 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11455, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12226, PETRI_PLACES=265, PETRI_TRANSITIONS=396} [2021-03-11 22:47:36,419 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2021-03-11 22:47:36,419 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 396 transitions, 12226 flow [2021-03-11 22:47:36,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:36,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:36,419 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:36,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 22:47:36,419 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:36,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1504157580, now seen corresponding path program 23 times [2021-03-11 22:47:36,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:36,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705900505] [2021-03-11 22:47:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:36,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:36,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:36,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:36,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:36,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:36,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:36,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:36,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:36,457 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:36,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:36,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:47:36,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:47:36,500 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:36,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:36,522 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:36,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:36,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705900505] [2021-03-11 22:47:36,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:36,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:36,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867581709] [2021-03-11 22:47:36,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:36,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:36,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:36,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:36,544 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:36,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 396 transitions, 12226 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:36,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:36,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:36,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:37,909 INFO L129 PetriNetUnfolder]: 708/5945 cut-off events. [2021-03-11 22:47:37,909 INFO L130 PetriNetUnfolder]: For 200293/205558 co-relation queries the response was YES. [2021-03-11 22:47:37,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42337 conditions, 5945 events. 708/5945 cut-off events. For 200293/205558 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 90919 event pairs, 472 based on Foata normal form. 59/5692 useless extension candidates. Maximal degree in co-relation 42219. Up to 1188 conditions per place. [2021-03-11 22:47:37,968 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 142 selfloop transitions, 265 changer transitions 1/422 dead transitions. [2021-03-11 22:47:37,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 422 transitions, 13679 flow [2021-03-11 22:47:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:37,970 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:37,970 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:37,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:37,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:37,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:37,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:37,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:37,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:37,971 INFO L185 Difference]: Start difference. First operand has 265 places, 396 transitions, 12226 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:37,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 422 transitions, 13679 flow [2021-03-11 22:47:38,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 422 transitions, 13136 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-03-11 22:47:38,893 INFO L241 Difference]: Finished difference. Result has 271 places, 405 transitions, 12576 flow [2021-03-11 22:47:38,894 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11699, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12576, PETRI_PLACES=271, PETRI_TRANSITIONS=405} [2021-03-11 22:47:38,894 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 227 predicate places. [2021-03-11 22:47:38,894 INFO L480 AbstractCegarLoop]: Abstraction has has 271 places, 405 transitions, 12576 flow [2021-03-11 22:47:38,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:38,894 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:38,894 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:38,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 22:47:38,894 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:38,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1260530610, now seen corresponding path program 24 times [2021-03-11 22:47:38,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:38,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675767302] [2021-03-11 22:47:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:38,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:38,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:38,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:38,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:38,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:38,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:38,915 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:38,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:38,923 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:38,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:38,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:38,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:38,950 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:38,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:38,971 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:38,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:38,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675767302] [2021-03-11 22:47:38,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:38,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:38,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122224351] [2021-03-11 22:47:38,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:38,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:38,995 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:38,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 405 transitions, 12576 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:38,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:38,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:38,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:40,381 INFO L129 PetriNetUnfolder]: 701/5957 cut-off events. [2021-03-11 22:47:40,381 INFO L130 PetriNetUnfolder]: For 202486/207751 co-relation queries the response was YES. [2021-03-11 22:47:40,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42620 conditions, 5957 events. 701/5957 cut-off events. For 202486/207751 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 91233 event pairs, 453 based on Foata normal form. 59/5703 useless extension candidates. Maximal degree in co-relation 42499. Up to 1188 conditions per place. [2021-03-11 22:47:40,441 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 163 selfloop transitions, 267 changer transitions 2/446 dead transitions. [2021-03-11 22:47:40,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 446 transitions, 14476 flow [2021-03-11 22:47:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:40,443 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:40,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:40,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:40,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:40,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:40,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:40,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:40,444 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:40,444 INFO L185 Difference]: Start difference. First operand has 271 places, 405 transitions, 12576 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:40,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 446 transitions, 14476 flow [2021-03-11 22:47:41,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 446 transitions, 13918 flow, removed 32 selfloop flow, removed 5 redundant places. [2021-03-11 22:47:41,341 INFO L241 Difference]: Finished difference. Result has 277 places, 414 transitions, 12926 flow [2021-03-11 22:47:41,342 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12039, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12926, PETRI_PLACES=277, PETRI_TRANSITIONS=414} [2021-03-11 22:47:41,342 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2021-03-11 22:47:41,342 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 414 transitions, 12926 flow [2021-03-11 22:47:41,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:41,342 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:41,342 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:41,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 22:47:41,342 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:41,343 INFO L82 PathProgramCache]: Analyzing trace with hash 597556738, now seen corresponding path program 25 times [2021-03-11 22:47:41,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:41,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051362040] [2021-03-11 22:47:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:41,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:41,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:41,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:41,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:41,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:41,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:41,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:41,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:41,373 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:41,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:41,384 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:47:41,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:47:41,404 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:41,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:41,428 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:41,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:41,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051362040] [2021-03-11 22:47:41,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:41,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:41,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334204659] [2021-03-11 22:47:41,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:41,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:41,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:41,452 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:41,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 414 transitions, 12926 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:41,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:41,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:41,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:42,897 INFO L129 PetriNetUnfolder]: 698/5984 cut-off events. [2021-03-11 22:47:42,897 INFO L130 PetriNetUnfolder]: For 203019/207716 co-relation queries the response was YES. [2021-03-11 22:47:42,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42756 conditions, 5984 events. 698/5984 cut-off events. For 203019/207716 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 91854 event pairs, 462 based on Foata normal form. 59/5724 useless extension candidates. Maximal degree in co-relation 42632. Up to 1188 conditions per place. [2021-03-11 22:47:42,950 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 142 selfloop transitions, 277 changer transitions 1/434 dead transitions. [2021-03-11 22:47:42,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 434 transitions, 14204 flow [2021-03-11 22:47:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:42,952 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:42,952 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:42,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:42,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:42,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:42,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:42,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:42,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:42,953 INFO L185 Difference]: Start difference. First operand has 277 places, 414 transitions, 12926 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:42,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 434 transitions, 14204 flow [2021-03-11 22:47:43,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 434 transitions, 13640 flow, removed 32 selfloop flow, removed 6 redundant places. [2021-03-11 22:47:43,793 INFO L241 Difference]: Finished difference. Result has 281 places, 417 transitions, 13048 flow [2021-03-11 22:47:43,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12383, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13048, PETRI_PLACES=281, PETRI_TRANSITIONS=417} [2021-03-11 22:47:43,793 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2021-03-11 22:47:43,793 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 417 transitions, 13048 flow [2021-03-11 22:47:43,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:43,793 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:43,794 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:43,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 22:47:43,794 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1758754998, now seen corresponding path program 26 times [2021-03-11 22:47:43,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:43,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084966641] [2021-03-11 22:47:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:43,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:43,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:43,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:43,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:43,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:43,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:43,814 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:43,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:43,822 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:43,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:43,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:43,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:43,846 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:43,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:43,869 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:43,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:43,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084966641] [2021-03-11 22:47:43,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:43,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:43,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474425395] [2021-03-11 22:47:43,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:43,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:43,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:43,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:43,893 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:43,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 417 transitions, 13048 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:43,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:43,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:43,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:45,300 INFO L129 PetriNetUnfolder]: 698/5980 cut-off events. [2021-03-11 22:47:45,301 INFO L130 PetriNetUnfolder]: For 200333/205030 co-relation queries the response was YES. [2021-03-11 22:47:45,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42606 conditions, 5980 events. 698/5980 cut-off events. For 200333/205030 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 91715 event pairs, 462 based on Foata normal form. 59/5720 useless extension candidates. Maximal degree in co-relation 42481. Up to 1188 conditions per place. [2021-03-11 22:47:45,360 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 140 selfloop transitions, 282 changer transitions 1/437 dead transitions. [2021-03-11 22:47:45,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 437 transitions, 14332 flow [2021-03-11 22:47:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:45,362 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:45,362 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:45,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:45,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:45,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:45,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:45,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:45,363 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:45,363 INFO L185 Difference]: Start difference. First operand has 281 places, 417 transitions, 13048 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 437 transitions, 14332 flow [2021-03-11 22:47:46,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 437 transitions, 13769 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-11 22:47:46,305 INFO L241 Difference]: Finished difference. Result has 285 places, 420 transitions, 13220 flow [2021-03-11 22:47:46,306 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12497, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13220, PETRI_PLACES=285, PETRI_TRANSITIONS=420} [2021-03-11 22:47:46,306 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2021-03-11 22:47:46,306 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 420 transitions, 13220 flow [2021-03-11 22:47:46,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:46,306 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:46,306 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:46,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 22:47:46,306 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash 230776096, now seen corresponding path program 27 times [2021-03-11 22:47:46,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:46,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010080636] [2021-03-11 22:47:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:46,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:46,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:46,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:46,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:46,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:46,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:46,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:46,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:46,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:46,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:46,348 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:47:46,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:47:46,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:46,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:46,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:46,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:46,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010080636] [2021-03-11 22:47:46,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:46,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:46,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135318787] [2021-03-11 22:47:46,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:46,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:46,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:46,404 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:46,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 420 transitions, 13220 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:46,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:46,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:46,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:47,849 INFO L129 PetriNetUnfolder]: 698/5976 cut-off events. [2021-03-11 22:47:47,849 INFO L130 PetriNetUnfolder]: For 202024/206721 co-relation queries the response was YES. [2021-03-11 22:47:47,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42687 conditions, 5976 events. 698/5976 cut-off events. For 202024/206721 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 91638 event pairs, 462 based on Foata normal form. 59/5722 useless extension candidates. Maximal degree in co-relation 42560. Up to 1188 conditions per place. [2021-03-11 22:47:47,909 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 140 selfloop transitions, 281 changer transitions 1/436 dead transitions. [2021-03-11 22:47:47,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 436 transitions, 14374 flow [2021-03-11 22:47:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:47,911 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:47,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:47,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:47,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:47,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:47,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:47,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:47,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:47,913 INFO L185 Difference]: Start difference. First operand has 285 places, 420 transitions, 13220 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 436 transitions, 14374 flow [2021-03-11 22:47:48,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 436 transitions, 13834 flow, removed 15 selfloop flow, removed 7 redundant places. [2021-03-11 22:47:48,839 INFO L241 Difference]: Finished difference. Result has 287 places, 421 transitions, 13303 flow [2021-03-11 22:47:48,839 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12690, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13303, PETRI_PLACES=287, PETRI_TRANSITIONS=421} [2021-03-11 22:47:48,839 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 243 predicate places. [2021-03-11 22:47:48,839 INFO L480 AbstractCegarLoop]: Abstraction has has 287 places, 421 transitions, 13303 flow [2021-03-11 22:47:48,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:48,839 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:48,840 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:48,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 22:47:48,840 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:48,840 INFO L82 PathProgramCache]: Analyzing trace with hash -428713018, now seen corresponding path program 28 times [2021-03-11 22:47:48,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:48,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575121091] [2021-03-11 22:47:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:48,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:48,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:48,853 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:48,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:48,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:48,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:48,868 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:48,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:48,880 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:47:48,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:47:48,908 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:47:48,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:47:48,947 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:48,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:48,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575121091] [2021-03-11 22:47:48,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:48,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:48,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100280582] [2021-03-11 22:47:48,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:48,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:48,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:48,966 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:48,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 421 transitions, 13303 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:48,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:48,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:48,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:50,333 INFO L129 PetriNetUnfolder]: 698/5970 cut-off events. [2021-03-11 22:47:50,333 INFO L130 PetriNetUnfolder]: For 201985/206682 co-relation queries the response was YES. [2021-03-11 22:47:50,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42742 conditions, 5970 events. 698/5970 cut-off events. For 201985/206682 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 91557 event pairs, 462 based on Foata normal form. 59/5716 useless extension candidates. Maximal degree in co-relation 42616. Up to 1188 conditions per place. [2021-03-11 22:47:50,393 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 145 selfloop transitions, 277 changer transitions 1/437 dead transitions. [2021-03-11 22:47:50,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 437 transitions, 14467 flow [2021-03-11 22:47:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:50,394 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:50,394 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:50,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:50,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:50,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:50,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:50,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:50,396 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:50,396 INFO L185 Difference]: Start difference. First operand has 287 places, 421 transitions, 13303 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:50,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 437 transitions, 14467 flow [2021-03-11 22:47:51,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 437 transitions, 13910 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:47:51,294 INFO L241 Difference]: Finished difference. Result has 290 places, 422 transitions, 13360 flow [2021-03-11 22:47:51,294 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12756, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13360, PETRI_PLACES=290, PETRI_TRANSITIONS=422} [2021-03-11 22:47:51,294 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 246 predicate places. [2021-03-11 22:47:51,294 INFO L480 AbstractCegarLoop]: Abstraction has has 290 places, 422 transitions, 13360 flow [2021-03-11 22:47:51,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:51,294 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:51,294 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:51,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 22:47:51,295 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:51,295 INFO L82 PathProgramCache]: Analyzing trace with hash -139928860, now seen corresponding path program 29 times [2021-03-11 22:47:51,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:51,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856703849] [2021-03-11 22:47:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:51,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:51,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:51,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:51,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:51,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:51,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:51,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:51,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:51,326 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:47:51,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:47:51,340 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:51,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:51,355 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:51,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:51,379 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:51,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:51,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856703849] [2021-03-11 22:47:51,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:51,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:51,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894011980] [2021-03-11 22:47:51,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:51,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:51,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:51,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:51,400 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:51,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 422 transitions, 13360 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:51,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:51,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:51,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:52,831 INFO L129 PetriNetUnfolder]: 698/5968 cut-off events. [2021-03-11 22:47:52,831 INFO L130 PetriNetUnfolder]: For 202188/206885 co-relation queries the response was YES. [2021-03-11 22:47:52,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42751 conditions, 5968 events. 698/5968 cut-off events. For 202188/206885 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 91522 event pairs, 453 based on Foata normal form. 59/5714 useless extension candidates. Maximal degree in co-relation 42624. Up to 1188 conditions per place. [2021-03-11 22:47:52,894 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 173 selfloop transitions, 279 changer transitions 1/467 dead transitions. [2021-03-11 22:47:52,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 467 transitions, 15660 flow [2021-03-11 22:47:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:52,896 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:52,896 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:52,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:52,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:52,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:52,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:52,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:52,897 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:52,897 INFO L185 Difference]: Start difference. First operand has 290 places, 422 transitions, 13360 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:52,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 467 transitions, 15660 flow [2021-03-11 22:47:53,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 467 transitions, 15064 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 22:47:53,831 INFO L241 Difference]: Finished difference. Result has 296 places, 436 transitions, 14053 flow [2021-03-11 22:47:53,831 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12811, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14053, PETRI_PLACES=296, PETRI_TRANSITIONS=436} [2021-03-11 22:47:53,831 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2021-03-11 22:47:53,832 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 436 transitions, 14053 flow [2021-03-11 22:47:53,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:53,832 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:53,832 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:53,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 22:47:53,832 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:53,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1797002676, now seen corresponding path program 30 times [2021-03-11 22:47:53,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:53,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727819265] [2021-03-11 22:47:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:53,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:53,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:53,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:53,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:53,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:53,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:53,850 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:53,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:53,858 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:47:53,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:47:53,872 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:53,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:53,889 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:53,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:53,912 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:53,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:53,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727819265] [2021-03-11 22:47:53,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:53,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:53,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421167756] [2021-03-11 22:47:53,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:53,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:53,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:53,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:53,936 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:53,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 436 transitions, 14053 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:53,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:53,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:53,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:55,402 INFO L129 PetriNetUnfolder]: 689/6001 cut-off events. [2021-03-11 22:47:55,402 INFO L130 PetriNetUnfolder]: For 208757/213449 co-relation queries the response was YES. [2021-03-11 22:47:55,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43309 conditions, 6001 events. 689/6001 cut-off events. For 208757/213449 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 92392 event pairs, 453 based on Foata normal form. 57/5741 useless extension candidates. Maximal degree in co-relation 43178. Up to 1188 conditions per place. [2021-03-11 22:47:55,464 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 167 selfloop transitions, 287 changer transitions 1/469 dead transitions. [2021-03-11 22:47:55,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 469 transitions, 15836 flow [2021-03-11 22:47:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:55,466 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:55,466 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:55,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:55,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:55,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:55,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:55,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:55,467 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:55,467 INFO L185 Difference]: Start difference. First operand has 296 places, 436 transitions, 14053 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:55,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 469 transitions, 15836 flow [2021-03-11 22:47:56,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 469 transitions, 15337 flow, removed 53 selfloop flow, removed 4 redundant places. [2021-03-11 22:47:56,509 INFO L241 Difference]: Finished difference. Result has 303 places, 452 transitions, 14753 flow [2021-03-11 22:47:56,510 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13590, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14753, PETRI_PLACES=303, PETRI_TRANSITIONS=452} [2021-03-11 22:47:56,510 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2021-03-11 22:47:56,510 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 452 transitions, 14753 flow [2021-03-11 22:47:56,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:56,510 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:56,510 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:56,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 22:47:56,510 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:56,511 INFO L82 PathProgramCache]: Analyzing trace with hash 818389290, now seen corresponding path program 31 times [2021-03-11 22:47:56,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:56,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77292329] [2021-03-11 22:47:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:56,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:56,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:56,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:56,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:56,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:56,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:56,533 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:56,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:56,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:47:56,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:47:56,557 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:56,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:56,576 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:56,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:56,599 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:56,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:56,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77292329] [2021-03-11 22:47:56,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:56,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:56,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272742061] [2021-03-11 22:47:56,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:56,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:56,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:56,619 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:56,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 452 transitions, 14753 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:56,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:56,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:56,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:47:58,136 INFO L129 PetriNetUnfolder]: 689/5996 cut-off events. [2021-03-11 22:47:58,136 INFO L130 PetriNetUnfolder]: For 209532/214224 co-relation queries the response was YES. [2021-03-11 22:47:58,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43459 conditions, 5996 events. 689/5996 cut-off events. For 209532/214224 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 92269 event pairs, 453 based on Foata normal form. 57/5731 useless extension candidates. Maximal degree in co-relation 43325. Up to 1188 conditions per place. [2021-03-11 22:47:58,199 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 292 changer transitions 2/482 dead transitions. [2021-03-11 22:47:58,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 482 transitions, 16531 flow [2021-03-11 22:47:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:47:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:47:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:47:58,200 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:47:58,200 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:47:58,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:47:58,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:47:58,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:47:58,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:58,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:58,202 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:58,202 INFO L185 Difference]: Start difference. First operand has 303 places, 452 transitions, 14753 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:47:58,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 482 transitions, 16531 flow [2021-03-11 22:47:59,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 482 transitions, 16009 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-11 22:47:59,293 INFO L241 Difference]: Finished difference. Result has 307 places, 453 transitions, 14913 flow [2021-03-11 22:47:59,293 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14244, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14913, PETRI_PLACES=307, PETRI_TRANSITIONS=453} [2021-03-11 22:47:59,293 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2021-03-11 22:47:59,293 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 453 transitions, 14913 flow [2021-03-11 22:47:59,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:59,293 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:47:59,294 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:47:59,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 22:47:59,294 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:47:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:47:59,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1941556516, now seen corresponding path program 32 times [2021-03-11 22:47:59,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:47:59,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028631755] [2021-03-11 22:47:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:47:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:47:59,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:59,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:47:59,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:47:59,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:47:59,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:47:59,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:47:59,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:47:59,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:47:59,323 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:47:59,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:47:59,335 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:47:59,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:47:59,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:47:59,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:47:59,378 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:47:59,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:47:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:47:59,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028631755] [2021-03-11 22:47:59,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:47:59,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:47:59,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252215390] [2021-03-11 22:47:59,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:47:59,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:47:59,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:47:59,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:47:59,400 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:47:59,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 453 transitions, 14913 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:47:59,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:47:59,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:47:59,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:00,920 INFO L129 PetriNetUnfolder]: 689/5990 cut-off events. [2021-03-11 22:48:00,920 INFO L130 PetriNetUnfolder]: For 210650/215342 co-relation queries the response was YES. [2021-03-11 22:48:00,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43581 conditions, 5990 events. 689/5990 cut-off events. For 210650/215342 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 92119 event pairs, 453 based on Foata normal form. 57/5726 useless extension candidates. Maximal degree in co-relation 43446. Up to 1188 conditions per place. [2021-03-11 22:48:00,983 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 290 changer transitions 2/480 dead transitions. [2021-03-11 22:48:00,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 480 transitions, 16576 flow [2021-03-11 22:48:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:00,985 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:00,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:00,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:00,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:00,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:00,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:00,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:00,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:00,986 INFO L185 Difference]: Start difference. First operand has 307 places, 453 transitions, 14913 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:00,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 480 transitions, 16576 flow [2021-03-11 22:48:02,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 480 transitions, 16004 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-11 22:48:02,027 INFO L241 Difference]: Finished difference. Result has 309 places, 454 transitions, 14982 flow [2021-03-11 22:48:02,027 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14351, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14982, PETRI_PLACES=309, PETRI_TRANSITIONS=454} [2021-03-11 22:48:02,027 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 265 predicate places. [2021-03-11 22:48:02,027 INFO L480 AbstractCegarLoop]: Abstraction has has 309 places, 454 transitions, 14982 flow [2021-03-11 22:48:02,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:02,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:02,027 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:02,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 22:48:02,028 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:02,028 INFO L82 PathProgramCache]: Analyzing trace with hash 484628528, now seen corresponding path program 33 times [2021-03-11 22:48:02,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:02,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343476026] [2021-03-11 22:48:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:02,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:02,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:02,049 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:02,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:02,058 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:48:02,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:48:02,070 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:48:02,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:48:02,086 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:48:02,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:48:02,107 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:02,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:02,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343476026] [2021-03-11 22:48:02,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:02,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:02,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832098287] [2021-03-11 22:48:02,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:02,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:02,127 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:02,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 454 transitions, 14982 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:02,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:02,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:02,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:03,608 INFO L129 PetriNetUnfolder]: 689/5968 cut-off events. [2021-03-11 22:48:03,608 INFO L130 PetriNetUnfolder]: For 211225/215065 co-relation queries the response was YES. [2021-03-11 22:48:03,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43583 conditions, 5968 events. 689/5968 cut-off events. For 211225/215065 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 91723 event pairs, 548 based on Foata normal form. 57/5708 useless extension candidates. Maximal degree in co-relation 43449. Up to 1188 conditions per place. [2021-03-11 22:48:03,669 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 167 selfloop transitions, 295 changer transitions 2/478 dead transitions. [2021-03-11 22:48:03,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 478 transitions, 16536 flow [2021-03-11 22:48:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:03,670 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:03,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:03,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:03,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:03,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:03,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:03,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:03,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:03,672 INFO L185 Difference]: Start difference. First operand has 309 places, 454 transitions, 14982 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:03,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 478 transitions, 16536 flow [2021-03-11 22:48:04,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 478 transitions, 15962 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:48:04,641 INFO L241 Difference]: Finished difference. Result has 312 places, 464 transitions, 15455 flow [2021-03-11 22:48:04,641 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14418, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15455, PETRI_PLACES=312, PETRI_TRANSITIONS=464} [2021-03-11 22:48:04,641 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 268 predicate places. [2021-03-11 22:48:04,641 INFO L480 AbstractCegarLoop]: Abstraction has has 312 places, 464 transitions, 15455 flow [2021-03-11 22:48:04,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:04,641 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:04,641 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:04,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 22:48:04,642 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:04,642 INFO L82 PathProgramCache]: Analyzing trace with hash -324757570, now seen corresponding path program 34 times [2021-03-11 22:48:04,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:04,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466868477] [2021-03-11 22:48:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:04,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:04,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:04,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:04,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:04,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:04,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:04,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:04,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:04,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:48:04,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:48:04,686 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:48:04,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:48:04,703 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:04,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:04,726 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:04,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:04,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466868477] [2021-03-11 22:48:04,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:04,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:04,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580225135] [2021-03-11 22:48:04,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:04,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:04,749 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:04,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 464 transitions, 15455 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:04,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:04,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:04,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:06,271 INFO L129 PetriNetUnfolder]: 689/5887 cut-off events. [2021-03-11 22:48:06,272 INFO L130 PetriNetUnfolder]: For 214366/219063 co-relation queries the response was YES. [2021-03-11 22:48:06,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43520 conditions, 5887 events. 689/5887 cut-off events. For 214366/219063 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 90081 event pairs, 530 based on Foata normal form. 59/5628 useless extension candidates. Maximal degree in co-relation 43385. Up to 1188 conditions per place. [2021-03-11 22:48:06,335 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 166 selfloop transitions, 293 changer transitions 3/476 dead transitions. [2021-03-11 22:48:06,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 476 transitions, 16557 flow [2021-03-11 22:48:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:06,336 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:06,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:06,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:06,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:06,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:06,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:06,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:06,337 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:06,337 INFO L185 Difference]: Start difference. First operand has 312 places, 464 transitions, 15455 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:06,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 476 transitions, 16557 flow [2021-03-11 22:48:07,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 476 transitions, 16020 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-11 22:48:07,327 INFO L241 Difference]: Finished difference. Result has 315 places, 461 transitions, 15393 flow [2021-03-11 22:48:07,328 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14928, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15393, PETRI_PLACES=315, PETRI_TRANSITIONS=461} [2021-03-11 22:48:07,328 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 271 predicate places. [2021-03-11 22:48:07,328 INFO L480 AbstractCegarLoop]: Abstraction has has 315 places, 461 transitions, 15393 flow [2021-03-11 22:48:07,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:07,328 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:07,328 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:07,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 22:48:07,328 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:07,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1778245932, now seen corresponding path program 35 times [2021-03-11 22:48:07,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:07,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266364265] [2021-03-11 22:48:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:07,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:07,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:07,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:07,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:07,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:07,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:07,348 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:07,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:07,356 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:48:07,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:48:07,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:48:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:48:07,383 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:48:07,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:48:07,406 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:07,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:07,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266364265] [2021-03-11 22:48:07,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:07,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:07,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119753010] [2021-03-11 22:48:07,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:07,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:07,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:07,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:07,429 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:07,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 461 transitions, 15393 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:07,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:07,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:07,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:08,943 INFO L129 PetriNetUnfolder]: 689/5972 cut-off events. [2021-03-11 22:48:08,943 INFO L130 PetriNetUnfolder]: For 210533/215230 co-relation queries the response was YES. [2021-03-11 22:48:08,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43643 conditions, 5972 events. 689/5972 cut-off events. For 210533/215230 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 91768 event pairs, 453 based on Foata normal form. 59/5713 useless extension candidates. Maximal degree in co-relation 43508. Up to 1188 conditions per place. [2021-03-11 22:48:09,005 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 289 changer transitions 2/476 dead transitions. [2021-03-11 22:48:09,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 476 transitions, 16616 flow [2021-03-11 22:48:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:09,006 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:09,006 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:09,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:09,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:09,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:09,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:09,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:09,007 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:09,007 INFO L185 Difference]: Start difference. First operand has 315 places, 461 transitions, 15393 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:09,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 476 transitions, 16616 flow [2021-03-11 22:48:10,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 476 transitions, 16033 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 22:48:10,013 INFO L241 Difference]: Finished difference. Result has 318 places, 462 transitions, 15455 flow [2021-03-11 22:48:10,013 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14823, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15455, PETRI_PLACES=318, PETRI_TRANSITIONS=462} [2021-03-11 22:48:10,013 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2021-03-11 22:48:10,013 INFO L480 AbstractCegarLoop]: Abstraction has has 318 places, 462 transitions, 15455 flow [2021-03-11 22:48:10,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:10,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:10,014 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:10,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 22:48:10,014 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:10,014 INFO L82 PathProgramCache]: Analyzing trace with hash -563858356, now seen corresponding path program 36 times [2021-03-11 22:48:10,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:10,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991248331] [2021-03-11 22:48:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:10,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:10,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:10,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:10,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:10,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:10,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:10,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:10,044 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:10,056 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:48:10,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:48:10,086 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:48:10,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:48:10,111 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:10,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:10,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991248331] [2021-03-11 22:48:10,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:10,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:10,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981849254] [2021-03-11 22:48:10,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:10,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:10,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:10,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:10,135 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:10,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 462 transitions, 15455 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:10,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:10,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:10,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:11,659 INFO L129 PetriNetUnfolder]: 689/5966 cut-off events. [2021-03-11 22:48:11,659 INFO L130 PetriNetUnfolder]: For 210575/215272 co-relation queries the response was YES. [2021-03-11 22:48:11,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43619 conditions, 5966 events. 689/5966 cut-off events. For 210575/215272 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 91619 event pairs, 453 based on Foata normal form. 59/5707 useless extension candidates. Maximal degree in co-relation 43483. Up to 1188 conditions per place. [2021-03-11 22:48:11,722 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 178 selfloop transitions, 281 changer transitions 1/474 dead transitions. [2021-03-11 22:48:11,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 474 transitions, 16553 flow [2021-03-11 22:48:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:11,723 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:11,723 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:11,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:11,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:11,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:11,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:11,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:11,724 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:11,724 INFO L185 Difference]: Start difference. First operand has 318 places, 462 transitions, 15455 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:11,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 474 transitions, 16553 flow [2021-03-11 22:48:12,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 474 transitions, 15978 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:48:12,761 INFO L241 Difference]: Finished difference. Result has 320 places, 461 transitions, 15408 flow [2021-03-11 22:48:12,761 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14890, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15408, PETRI_PLACES=320, PETRI_TRANSITIONS=461} [2021-03-11 22:48:12,762 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 276 predicate places. [2021-03-11 22:48:12,762 INFO L480 AbstractCegarLoop]: Abstraction has has 320 places, 461 transitions, 15408 flow [2021-03-11 22:48:12,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:12,762 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:12,762 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:12,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 22:48:12,762 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:12,762 INFO L82 PathProgramCache]: Analyzing trace with hash 877840412, now seen corresponding path program 37 times [2021-03-11 22:48:12,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:12,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800276893] [2021-03-11 22:48:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:12,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:12,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:12,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:12,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:12,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:12,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:12,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:12,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:12,795 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:12,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:12,805 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:48:12,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:48:12,826 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:48:12,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:48:12,850 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:12,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:12,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800276893] [2021-03-11 22:48:12,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:12,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:12,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627492600] [2021-03-11 22:48:12,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:12,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:12,874 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:12,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 461 transitions, 15408 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:12,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:12,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:12,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:14,394 INFO L129 PetriNetUnfolder]: 689/5963 cut-off events. [2021-03-11 22:48:14,394 INFO L130 PetriNetUnfolder]: For 210378/215075 co-relation queries the response was YES. [2021-03-11 22:48:14,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43613 conditions, 5963 events. 689/5963 cut-off events. For 210378/215075 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 91558 event pairs, 453 based on Foata normal form. 59/5704 useless extension candidates. Maximal degree in co-relation 43477. Up to 1188 conditions per place. [2021-03-11 22:48:14,458 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 175 selfloop transitions, 282 changer transitions 2/473 dead transitions. [2021-03-11 22:48:14,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 473 transitions, 16504 flow [2021-03-11 22:48:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:14,460 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:14,460 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:14,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:14,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:14,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:14,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:14,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:14,461 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:14,461 INFO L185 Difference]: Start difference. First operand has 320 places, 461 transitions, 15408 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:14,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 473 transitions, 16504 flow [2021-03-11 22:48:15,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 473 transitions, 15929 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 22:48:15,517 INFO L241 Difference]: Finished difference. Result has 321 places, 459 transitions, 15319 flow [2021-03-11 22:48:15,517 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14843, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15319, PETRI_PLACES=321, PETRI_TRANSITIONS=459} [2021-03-11 22:48:15,517 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2021-03-11 22:48:15,517 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 459 transitions, 15319 flow [2021-03-11 22:48:15,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:15,518 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:15,518 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:15,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 22:48:15,518 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:15,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2032813070, now seen corresponding path program 38 times [2021-03-11 22:48:15,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:15,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876458014] [2021-03-11 22:48:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:15,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:15,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:15,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:15,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:15,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:15,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:15,540 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:15,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:15,549 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:15,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:15,562 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:48:15,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:48:15,579 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:15,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:15,600 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:15,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:15,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876458014] [2021-03-11 22:48:15,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:15,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:15,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618602767] [2021-03-11 22:48:15,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:15,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:15,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:15,621 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:15,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 459 transitions, 15319 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:15,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:15,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:15,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:17,131 INFO L129 PetriNetUnfolder]: 689/5957 cut-off events. [2021-03-11 22:48:17,132 INFO L130 PetriNetUnfolder]: For 209476/214161 co-relation queries the response was YES. [2021-03-11 22:48:17,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43576 conditions, 5957 events. 689/5957 cut-off events. For 209476/214161 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 91384 event pairs, 453 based on Foata normal form. 59/5698 useless extension candidates. Maximal degree in co-relation 43441. Up to 1188 conditions per place. [2021-03-11 22:48:17,192 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 177 selfloop transitions, 278 changer transitions 2/471 dead transitions. [2021-03-11 22:48:17,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 471 transitions, 16411 flow [2021-03-11 22:48:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:17,193 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:17,193 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:17,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:17,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:17,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:17,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:17,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:17,194 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:17,194 INFO L185 Difference]: Start difference. First operand has 321 places, 459 transitions, 15319 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:17,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 471 transitions, 16411 flow [2021-03-11 22:48:18,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 471 transitions, 15831 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-03-11 22:48:18,116 INFO L241 Difference]: Finished difference. Result has 321 places, 457 transitions, 15222 flow [2021-03-11 22:48:18,116 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14749, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15222, PETRI_PLACES=321, PETRI_TRANSITIONS=457} [2021-03-11 22:48:18,116 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2021-03-11 22:48:18,116 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 457 transitions, 15222 flow [2021-03-11 22:48:18,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:18,116 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:18,116 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:18,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 22:48:18,117 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1003198108, now seen corresponding path program 39 times [2021-03-11 22:48:18,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:18,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927215045] [2021-03-11 22:48:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:18,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:18,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:18,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:18,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:18,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:18,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:18,141 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:18,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:18,150 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:18,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:18,162 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:48:18,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:48:18,179 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:18,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:18,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:18,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:18,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927215045] [2021-03-11 22:48:18,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:18,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:18,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551150689] [2021-03-11 22:48:18,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:18,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:18,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:18,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:18,223 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:18,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 457 transitions, 15222 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:18,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:18,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:18,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:19,704 INFO L129 PetriNetUnfolder]: 689/5934 cut-off events. [2021-03-11 22:48:19,705 INFO L130 PetriNetUnfolder]: For 209549/213380 co-relation queries the response was YES. [2021-03-11 22:48:19,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43488 conditions, 5934 events. 689/5934 cut-off events. For 209549/213380 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 90975 event pairs, 548 based on Foata normal form. 57/5677 useless extension candidates. Maximal degree in co-relation 43355. Up to 1188 conditions per place. [2021-03-11 22:48:19,766 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 179 selfloop transitions, 275 changer transitions 1/469 dead transitions. [2021-03-11 22:48:19,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 469 transitions, 16310 flow [2021-03-11 22:48:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:19,767 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:19,767 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:19,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:19,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:19,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:19,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:19,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:19,768 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:19,768 INFO L185 Difference]: Start difference. First operand has 321 places, 457 transitions, 15222 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:19,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 469 transitions, 16310 flow [2021-03-11 22:48:20,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 469 transitions, 15741 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-03-11 22:48:20,813 INFO L241 Difference]: Finished difference. Result has 322 places, 456 transitions, 15167 flow [2021-03-11 22:48:20,814 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14663, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15167, PETRI_PLACES=322, PETRI_TRANSITIONS=456} [2021-03-11 22:48:20,814 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 278 predicate places. [2021-03-11 22:48:20,814 INFO L480 AbstractCegarLoop]: Abstraction has has 322 places, 456 transitions, 15167 flow [2021-03-11 22:48:20,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:20,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:20,814 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:20,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 22:48:20,814 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash -402925868, now seen corresponding path program 40 times [2021-03-11 22:48:20,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:20,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337471017] [2021-03-11 22:48:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:20,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:20,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:20,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:20,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:20,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:20,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:20,837 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:20,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:20,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:20,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:20,857 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:48:20,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:48:20,873 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:20,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:20,895 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:20,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:20,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337471017] [2021-03-11 22:48:20,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:20,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:20,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136668152] [2021-03-11 22:48:20,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:20,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:20,917 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:20,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 456 transitions, 15167 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:20,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:20,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:20,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:22,415 INFO L129 PetriNetUnfolder]: 689/5944 cut-off events. [2021-03-11 22:48:22,415 INFO L130 PetriNetUnfolder]: For 207726/212411 co-relation queries the response was YES. [2021-03-11 22:48:22,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43481 conditions, 5944 events. 689/5944 cut-off events. For 207726/212411 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 91135 event pairs, 453 based on Foata normal form. 59/5686 useless extension candidates. Maximal degree in co-relation 43349. Up to 1188 conditions per place. [2021-03-11 22:48:22,476 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 178 selfloop transitions, 275 changer transitions 1/468 dead transitions. [2021-03-11 22:48:22,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 468 transitions, 16253 flow [2021-03-11 22:48:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:22,477 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:22,477 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:22,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:22,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:22,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:22,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:22,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:22,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:22,479 INFO L185 Difference]: Start difference. First operand has 322 places, 456 transitions, 15167 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:22,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 468 transitions, 16253 flow [2021-03-11 22:48:23,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 468 transitions, 15690 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 22:48:23,508 INFO L241 Difference]: Finished difference. Result has 323 places, 455 transitions, 15118 flow [2021-03-11 22:48:23,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14614, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15118, PETRI_PLACES=323, PETRI_TRANSITIONS=455} [2021-03-11 22:48:23,509 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2021-03-11 22:48:23,509 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 455 transitions, 15118 flow [2021-03-11 22:48:23,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:23,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:23,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:23,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 22:48:23,509 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash -249136894, now seen corresponding path program 41 times [2021-03-11 22:48:23,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:23,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392947907] [2021-03-11 22:48:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:23,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:23,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:23,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:23,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:23,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:23,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:23,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:48:23,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:48:23,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:23,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:23,558 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:48:23,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:48:23,574 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:23,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:23,595 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:23,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:23,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392947907] [2021-03-11 22:48:23,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:23,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:23,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118506179] [2021-03-11 22:48:23,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:23,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:23,618 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:23,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 455 transitions, 15118 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:23,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:23,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:23,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:25,091 INFO L129 PetriNetUnfolder]: 689/5938 cut-off events. [2021-03-11 22:48:25,091 INFO L130 PetriNetUnfolder]: For 207271/211956 co-relation queries the response was YES. [2021-03-11 22:48:25,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43466 conditions, 5938 events. 689/5938 cut-off events. For 207271/211956 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 90997 event pairs, 453 based on Foata normal form. 59/5680 useless extension candidates. Maximal degree in co-relation 43335. Up to 1188 conditions per place. [2021-03-11 22:48:25,153 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 280 changer transitions 2/467 dead transitions. [2021-03-11 22:48:25,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 467 transitions, 16202 flow [2021-03-11 22:48:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:25,154 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:25,154 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:25,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:25,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:25,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:25,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:25,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:25,155 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:25,155 INFO L185 Difference]: Start difference. First operand has 323 places, 455 transitions, 15118 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:25,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 467 transitions, 16202 flow [2021-03-11 22:48:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 467 transitions, 15654 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:48:26,165 INFO L241 Difference]: Finished difference. Result has 325 places, 453 transitions, 15056 flow [2021-03-11 22:48:26,165 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14580, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15056, PETRI_PLACES=325, PETRI_TRANSITIONS=453} [2021-03-11 22:48:26,165 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 281 predicate places. [2021-03-11 22:48:26,165 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 453 transitions, 15056 flow [2021-03-11 22:48:26,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:26,166 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:26,166 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:26,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 22:48:26,166 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:26,166 INFO L82 PathProgramCache]: Analyzing trace with hash -457133370, now seen corresponding path program 42 times [2021-03-11 22:48:26,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:26,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956878243] [2021-03-11 22:48:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:26,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:26,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:26,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:26,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:26,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:26,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:26,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:26,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:26,211 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:48:26,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:48:26,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:48:26,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:48:26,243 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:48:26,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:48:26,267 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:26,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:26,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956878243] [2021-03-11 22:48:26,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:26,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:26,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706075424] [2021-03-11 22:48:26,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:26,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:26,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:26,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:26,287 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:26,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 453 transitions, 15056 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:26,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:26,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:26,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:27,750 INFO L129 PetriNetUnfolder]: 689/6007 cut-off events. [2021-03-11 22:48:27,750 INFO L130 PetriNetUnfolder]: For 206778/211463 co-relation queries the response was YES. [2021-03-11 22:48:27,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43511 conditions, 6007 events. 689/6007 cut-off events. For 206778/211463 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 92455 event pairs, 403 based on Foata normal form. 52/5719 useless extension candidates. Maximal degree in co-relation 43380. Up to 1188 conditions per place. [2021-03-11 22:48:27,812 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 202 selfloop transitions, 260 changer transitions 2/478 dead transitions. [2021-03-11 22:48:27,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 478 transitions, 16510 flow [2021-03-11 22:48:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:27,813 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:27,813 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:27,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:27,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:27,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:27,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:27,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:27,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:27,814 INFO L185 Difference]: Start difference. First operand has 325 places, 453 transitions, 15056 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:27,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 478 transitions, 16510 flow [2021-03-11 22:48:28,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 478 transitions, 15956 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 22:48:28,813 INFO L241 Difference]: Finished difference. Result has 328 places, 456 transitions, 15188 flow [2021-03-11 22:48:28,813 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14512, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15188, PETRI_PLACES=328, PETRI_TRANSITIONS=456} [2021-03-11 22:48:28,813 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 284 predicate places. [2021-03-11 22:48:28,813 INFO L480 AbstractCegarLoop]: Abstraction has has 328 places, 456 transitions, 15188 flow [2021-03-11 22:48:28,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:28,813 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:28,813 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:28,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 22:48:28,814 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:28,814 INFO L82 PathProgramCache]: Analyzing trace with hash 290443258, now seen corresponding path program 43 times [2021-03-11 22:48:28,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:28,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681520137] [2021-03-11 22:48:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:28,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:28,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:28,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:28,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:28,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:28,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:48:28,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:28,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:28,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:28,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:28,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:48:28,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:48:28,874 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:28,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:28,907 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:28,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:28,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681520137] [2021-03-11 22:48:28,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:28,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:28,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846063893] [2021-03-11 22:48:28,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:28,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:28,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:28,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:28,929 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:28,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 456 transitions, 15188 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:28,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:28,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:28,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:30,589 INFO L129 PetriNetUnfolder]: 653/6562 cut-off events. [2021-03-11 22:48:30,589 INFO L130 PetriNetUnfolder]: For 228933/233618 co-relation queries the response was YES. [2021-03-11 22:48:30,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47306 conditions, 6562 events. 653/6562 cut-off events. For 228933/233618 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 104267 event pairs, 303 based on Foata normal form. 27/6259 useless extension candidates. Maximal degree in co-relation 47174. Up to 1263 conditions per place. [2021-03-11 22:48:30,652 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 435 selfloop transitions, 185 changer transitions 2/636 dead transitions. [2021-03-11 22:48:30,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 636 transitions, 22175 flow [2021-03-11 22:48:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:30,653 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:30,653 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:30,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:30,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:30,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:30,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:30,654 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:30,654 INFO L185 Difference]: Start difference. First operand has 328 places, 456 transitions, 15188 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:30,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 636 transitions, 22175 flow [2021-03-11 22:48:31,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 636 transitions, 21480 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-03-11 22:48:31,739 INFO L241 Difference]: Finished difference. Result has 336 places, 517 transitions, 17362 flow [2021-03-11 22:48:31,739 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14717, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17362, PETRI_PLACES=336, PETRI_TRANSITIONS=517} [2021-03-11 22:48:31,750 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2021-03-11 22:48:31,750 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 517 transitions, 17362 flow [2021-03-11 22:48:31,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:31,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:31,750 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:31,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 22:48:31,751 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -240124870, now seen corresponding path program 44 times [2021-03-11 22:48:31,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:31,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070312643] [2021-03-11 22:48:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:31,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:31,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:31,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:31,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:31,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:31,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:48:31,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:31,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:31,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:48:31,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:48:31,829 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:48:31,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:48:31,871 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:31,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:31,896 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:31,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:31,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070312643] [2021-03-11 22:48:31,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:31,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:31,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080853306] [2021-03-11 22:48:31,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:31,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:31,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:31,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:31,932 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:31,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 517 transitions, 17362 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:31,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:31,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:31,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:33,916 INFO L129 PetriNetUnfolder]: 641/7136 cut-off events. [2021-03-11 22:48:33,917 INFO L130 PetriNetUnfolder]: For 263083/268116 co-relation queries the response was YES. [2021-03-11 22:48:33,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51917 conditions, 7136 events. 641/7136 cut-off events. For 263083/268116 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 116432 event pairs, 304 based on Foata normal form. 27/6808 useless extension candidates. Maximal degree in co-relation 51780. Up to 1508 conditions per place. [2021-03-11 22:48:33,989 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 398 selfloop transitions, 265 changer transitions 5/682 dead transitions. [2021-03-11 22:48:33,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 682 transitions, 24042 flow [2021-03-11 22:48:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:33,991 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:33,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:33,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:33,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:33,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:33,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:33,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:33,992 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:33,992 INFO L185 Difference]: Start difference. First operand has 336 places, 517 transitions, 17362 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:33,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 682 transitions, 24042 flow [2021-03-11 22:48:35,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 682 transitions, 23675 flow, removed 87 selfloop flow, removed 3 redundant places. [2021-03-11 22:48:35,578 INFO L241 Difference]: Finished difference. Result has 346 places, 586 transitions, 20394 flow [2021-03-11 22:48:35,578 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=17037, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20394, PETRI_PLACES=346, PETRI_TRANSITIONS=586} [2021-03-11 22:48:35,578 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2021-03-11 22:48:35,578 INFO L480 AbstractCegarLoop]: Abstraction has has 346 places, 586 transitions, 20394 flow [2021-03-11 22:48:35,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:35,578 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:35,579 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:35,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 22:48:35,579 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:35,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2068410486, now seen corresponding path program 45 times [2021-03-11 22:48:35,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:35,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113171875] [2021-03-11 22:48:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:35,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:35,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:35,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:35,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:35,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:35,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:35,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:35,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:35,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:48:35,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:48:35,627 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:48:35,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:48:35,660 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:35,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:35,684 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:35,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:35,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113171875] [2021-03-11 22:48:35,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:35,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:35,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336747089] [2021-03-11 22:48:35,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:35,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:35,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:35,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:35,706 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:35,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 586 transitions, 20394 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:35,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:35,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:35,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:37,825 INFO L129 PetriNetUnfolder]: 632/7279 cut-off events. [2021-03-11 22:48:37,826 INFO L130 PetriNetUnfolder]: For 276344/281369 co-relation queries the response was YES. [2021-03-11 22:48:37,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53335 conditions, 7279 events. 632/7279 cut-off events. For 276344/281369 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 119890 event pairs, 389 based on Foata normal form. 52/6937 useless extension candidates. Maximal degree in co-relation 53193. Up to 1287 conditions per place. [2021-03-11 22:48:37,898 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 248 selfloop transitions, 364 changer transitions 2/628 dead transitions. [2021-03-11 22:48:37,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 628 transitions, 22726 flow [2021-03-11 22:48:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:37,899 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:37,899 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:37,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:37,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:37,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:37,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:37,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:37,900 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:37,900 INFO L185 Difference]: Start difference. First operand has 346 places, 586 transitions, 20394 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:37,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 628 transitions, 22726 flow [2021-03-11 22:48:39,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 628 transitions, 22224 flow, removed 146 selfloop flow, removed 4 redundant places. [2021-03-11 22:48:39,459 INFO L241 Difference]: Finished difference. Result has 353 places, 596 transitions, 21029 flow [2021-03-11 22:48:39,459 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=19924, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21029, PETRI_PLACES=353, PETRI_TRANSITIONS=596} [2021-03-11 22:48:39,460 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 309 predicate places. [2021-03-11 22:48:39,460 INFO L480 AbstractCegarLoop]: Abstraction has has 353 places, 596 transitions, 21029 flow [2021-03-11 22:48:39,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:39,460 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:39,460 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:39,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 22:48:39,460 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash 13912096, now seen corresponding path program 46 times [2021-03-11 22:48:39,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:39,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885803261] [2021-03-11 22:48:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:39,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:39,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:39,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:39,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:39,473 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:39,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:39,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:39,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:39,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:48:39,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:48:39,503 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:48:39,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:48:39,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:39,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:39,551 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:39,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:39,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885803261] [2021-03-11 22:48:39,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:39,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:39,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486568516] [2021-03-11 22:48:39,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:39,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:39,571 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:39,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 596 transitions, 21029 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:39,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:39,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:39,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:41,742 INFO L129 PetriNetUnfolder]: 620/7250 cut-off events. [2021-03-11 22:48:41,742 INFO L130 PetriNetUnfolder]: For 276081/281012 co-relation queries the response was YES. [2021-03-11 22:48:41,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53920 conditions, 7250 events. 620/7250 cut-off events. For 276081/281012 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 119283 event pairs, 390 based on Foata normal form. 44/6916 useless extension candidates. Maximal degree in co-relation 53776. Up to 1300 conditions per place. [2021-03-11 22:48:41,819 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 361 selfloop transitions, 321 changer transitions 4/700 dead transitions. [2021-03-11 22:48:41,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 700 transitions, 26135 flow [2021-03-11 22:48:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:41,820 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:41,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:41,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:41,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:41,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:41,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:41,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:41,822 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:41,822 INFO L185 Difference]: Start difference. First operand has 353 places, 596 transitions, 21029 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:41,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 700 transitions, 26135 flow [2021-03-11 22:48:43,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 700 transitions, 25626 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-03-11 22:48:43,746 INFO L241 Difference]: Finished difference. Result has 361 places, 624 transitions, 22645 flow [2021-03-11 22:48:43,746 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=20567, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22645, PETRI_PLACES=361, PETRI_TRANSITIONS=624} [2021-03-11 22:48:43,746 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 317 predicate places. [2021-03-11 22:48:43,746 INFO L480 AbstractCegarLoop]: Abstraction has has 361 places, 624 transitions, 22645 flow [2021-03-11 22:48:43,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:43,746 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:43,746 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:43,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 22:48:43,747 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:43,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1345063840, now seen corresponding path program 47 times [2021-03-11 22:48:43,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:43,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083669047] [2021-03-11 22:48:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:43,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:43,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:43,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:43,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:43,758 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:43,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:43,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:43,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:43,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:48:43,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:48:43,781 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:48:43,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:48:43,803 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:43,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:43,822 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:43,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083669047] [2021-03-11 22:48:43,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:43,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:43,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193259560] [2021-03-11 22:48:43,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:43,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:43,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:43,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:43,843 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:43,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 624 transitions, 22645 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:43,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:43,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:43,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:46,168 INFO L129 PetriNetUnfolder]: 583/7588 cut-off events. [2021-03-11 22:48:46,168 INFO L130 PetriNetUnfolder]: For 302414/307705 co-relation queries the response was YES. [2021-03-11 22:48:46,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56479 conditions, 7588 events. 583/7588 cut-off events. For 302414/307705 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 127178 event pairs, 392 based on Foata normal form. 58/7236 useless extension candidates. Maximal degree in co-relation 56331. Up to 1287 conditions per place. [2021-03-11 22:48:46,246 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 298 selfloop transitions, 366 changer transitions 2/680 dead transitions. [2021-03-11 22:48:46,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 680 transitions, 25853 flow [2021-03-11 22:48:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:46,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:46,247 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:46,247 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:46,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:46,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:46,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:46,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:46,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:46,249 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:46,249 INFO L185 Difference]: Start difference. First operand has 361 places, 624 transitions, 22645 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:46,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 680 transitions, 25853 flow [2021-03-11 22:48:48,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 680 transitions, 25317 flow, removed 125 selfloop flow, removed 3 redundant places. [2021-03-11 22:48:48,287 INFO L241 Difference]: Finished difference. Result has 370 places, 640 transitions, 23735 flow [2021-03-11 22:48:48,287 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=22199, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23735, PETRI_PLACES=370, PETRI_TRANSITIONS=640} [2021-03-11 22:48:48,287 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 326 predicate places. [2021-03-11 22:48:48,288 INFO L480 AbstractCegarLoop]: Abstraction has has 370 places, 640 transitions, 23735 flow [2021-03-11 22:48:48,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:48,288 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:48,288 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:48,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 22:48:48,288 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash -767165276, now seen corresponding path program 48 times [2021-03-11 22:48:48,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:48,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120415652] [2021-03-11 22:48:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:48,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:48,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:48,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:48,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:48,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:48,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:48,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:48,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:48,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:48:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:48:48,323 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:48:48,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:48:48,347 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:48,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:48,368 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:48,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120415652] [2021-03-11 22:48:48,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:48,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:48,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655266841] [2021-03-11 22:48:48,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:48,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:48,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:48,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:48,388 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:48,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 640 transitions, 23735 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:48,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:48,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:48,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:50,842 INFO L129 PetriNetUnfolder]: 580/7563 cut-off events. [2021-03-11 22:48:50,842 INFO L130 PetriNetUnfolder]: For 305243/310447 co-relation queries the response was YES. [2021-03-11 22:48:50,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56694 conditions, 7563 events. 580/7563 cut-off events. For 305243/310447 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 126671 event pairs, 390 based on Foata normal form. 50/7207 useless extension candidates. Maximal degree in co-relation 56542. Up to 1297 conditions per place. [2021-03-11 22:48:50,924 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 361 selfloop transitions, 341 changer transitions 2/718 dead transitions. [2021-03-11 22:48:50,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 718 transitions, 27906 flow [2021-03-11 22:48:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:50,925 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:50,925 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:50,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:50,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:50,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:50,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:50,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:50,927 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:50,927 INFO L185 Difference]: Start difference. First operand has 370 places, 640 transitions, 23735 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:50,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 718 transitions, 27906 flow [2021-03-11 22:48:53,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 718 transitions, 27052 flow, removed 27 selfloop flow, removed 6 redundant places. [2021-03-11 22:48:53,055 INFO L241 Difference]: Finished difference. Result has 376 places, 655 transitions, 24335 flow [2021-03-11 22:48:53,056 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=22919, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24335, PETRI_PLACES=376, PETRI_TRANSITIONS=655} [2021-03-11 22:48:53,056 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 332 predicate places. [2021-03-11 22:48:53,056 INFO L480 AbstractCegarLoop]: Abstraction has has 376 places, 655 transitions, 24335 flow [2021-03-11 22:48:53,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:53,056 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:53,056 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:53,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 22:48:53,056 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash -763053946, now seen corresponding path program 49 times [2021-03-11 22:48:53,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:53,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154135820] [2021-03-11 22:48:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:53,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:53,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:53,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:53,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:53,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:53,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:53,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:53,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:53,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:48:53,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:48:53,093 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:48:53,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:48:53,114 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:53,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:53,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:53,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154135820] [2021-03-11 22:48:53,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:53,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:53,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569941744] [2021-03-11 22:48:53,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:53,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:53,156 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:53,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 655 transitions, 24335 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:53,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:53,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:53,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:48:55,656 INFO L129 PetriNetUnfolder]: 580/7587 cut-off events. [2021-03-11 22:48:55,656 INFO L130 PetriNetUnfolder]: For 308033/313171 co-relation queries the response was YES. [2021-03-11 22:48:55,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57073 conditions, 7587 events. 580/7587 cut-off events. For 308033/313171 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 127132 event pairs, 391 based on Foata normal form. 58/7239 useless extension candidates. Maximal degree in co-relation 56918. Up to 1287 conditions per place. [2021-03-11 22:48:55,738 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 300 selfloop transitions, 382 changer transitions 1/697 dead transitions. [2021-03-11 22:48:55,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 697 transitions, 27047 flow [2021-03-11 22:48:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:48:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:48:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:48:55,739 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:48:55,739 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:48:55,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:48:55,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:48:55,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:48:55,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:55,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:55,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:55,741 INFO L185 Difference]: Start difference. First operand has 376 places, 655 transitions, 24335 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:48:55,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 697 transitions, 27047 flow [2021-03-11 22:48:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 697 transitions, 26630 flow, removed 63 selfloop flow, removed 4 redundant places. [2021-03-11 22:48:58,076 INFO L241 Difference]: Finished difference. Result has 383 places, 661 transitions, 24999 flow [2021-03-11 22:48:58,077 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=23932, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24999, PETRI_PLACES=383, PETRI_TRANSITIONS=661} [2021-03-11 22:48:58,077 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 339 predicate places. [2021-03-11 22:48:58,077 INFO L480 AbstractCegarLoop]: Abstraction has has 383 places, 661 transitions, 24999 flow [2021-03-11 22:48:58,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:58,077 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:48:58,077 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:48:58,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 22:48:58,077 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:48:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:48:58,077 INFO L82 PathProgramCache]: Analyzing trace with hash 9352792, now seen corresponding path program 50 times [2021-03-11 22:48:58,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:48:58,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096308675] [2021-03-11 22:48:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:48:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:48:58,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:58,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:48:58,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:48:58,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:48:58,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:48:58,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:48:58,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:48:58,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:48:58,102 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:48:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:48:58,114 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:48:58,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:48:58,138 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:48:58,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:48:58,160 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:48:58,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:48:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:48:58,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096308675] [2021-03-11 22:48:58,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:48:58,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:48:58,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105694791] [2021-03-11 22:48:58,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:48:58,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:48:58,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:48:58,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:48:58,179 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:48:58,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 661 transitions, 24999 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:48:58,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:48:58,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:48:58,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:00,830 INFO L129 PetriNetUnfolder]: 537/7880 cut-off events. [2021-03-11 22:49:00,830 INFO L130 PetriNetUnfolder]: For 321169/326307 co-relation queries the response was YES. [2021-03-11 22:49:00,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59340 conditions, 7880 events. 537/7880 cut-off events. For 321169/326307 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 134045 event pairs, 389 based on Foata normal form. 58/7509 useless extension candidates. Maximal degree in co-relation 59183. Up to 1287 conditions per place. [2021-03-11 22:49:00,917 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 311 selfloop transitions, 389 changer transitions 2/716 dead transitions. [2021-03-11 22:49:00,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 716 transitions, 28389 flow [2021-03-11 22:49:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:00,919 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:00,919 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:00,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:00,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:00,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:00,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:00,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:00,920 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:00,920 INFO L185 Difference]: Start difference. First operand has 383 places, 661 transitions, 24999 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:00,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 716 transitions, 28389 flow [2021-03-11 22:49:03,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 716 transitions, 27659 flow, removed 19 selfloop flow, removed 5 redundant places. [2021-03-11 22:49:03,284 INFO L241 Difference]: Finished difference. Result has 390 places, 680 transitions, 26036 flow [2021-03-11 22:49:03,285 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=24296, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26036, PETRI_PLACES=390, PETRI_TRANSITIONS=680} [2021-03-11 22:49:03,285 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 346 predicate places. [2021-03-11 22:49:03,285 INFO L480 AbstractCegarLoop]: Abstraction has has 390 places, 680 transitions, 26036 flow [2021-03-11 22:49:03,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:03,285 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:03,285 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:03,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 22:49:03,285 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:03,285 INFO L82 PathProgramCache]: Analyzing trace with hash 294974744, now seen corresponding path program 51 times [2021-03-11 22:49:03,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:03,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352214070] [2021-03-11 22:49:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:03,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:03,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:03,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:03,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:03,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:03,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:03,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:03,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:03,310 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:49:03,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:49:03,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:49:03,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:49:03,340 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:49:03,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:49:03,364 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:03,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:03,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352214070] [2021-03-11 22:49:03,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:03,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:03,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522036621] [2021-03-11 22:49:03,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:03,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:03,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:03,387 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:03,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 680 transitions, 26036 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:03,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:03,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:03,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:06,129 INFO L129 PetriNetUnfolder]: 537/7854 cut-off events. [2021-03-11 22:49:06,129 INFO L130 PetriNetUnfolder]: For 335040/342148 co-relation queries the response was YES. [2021-03-11 22:49:06,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59842 conditions, 7854 events. 537/7854 cut-off events. For 335040/342148 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 133471 event pairs, 395 based on Foata normal form. 70/7527 useless extension candidates. Maximal degree in co-relation 59681. Up to 1287 conditions per place. [2021-03-11 22:49:06,227 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 306 selfloop transitions, 383 changer transitions 2/705 dead transitions. [2021-03-11 22:49:06,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 705 transitions, 28222 flow [2021-03-11 22:49:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:06,229 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:06,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:06,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:06,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:06,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:06,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:06,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:06,230 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:06,230 INFO L185 Difference]: Start difference. First operand has 390 places, 680 transitions, 26036 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:06,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 705 transitions, 28222 flow [2021-03-11 22:49:08,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 705 transitions, 27612 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-03-11 22:49:08,814 INFO L241 Difference]: Finished difference. Result has 394 places, 694 transitions, 26899 flow [2021-03-11 22:49:08,814 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=25443, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26899, PETRI_PLACES=394, PETRI_TRANSITIONS=694} [2021-03-11 22:49:08,814 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 350 predicate places. [2021-03-11 22:49:08,814 INFO L480 AbstractCegarLoop]: Abstraction has has 394 places, 694 transitions, 26899 flow [2021-03-11 22:49:08,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:08,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:08,814 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:08,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 22:49:08,815 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:08,815 INFO L82 PathProgramCache]: Analyzing trace with hash -960534090, now seen corresponding path program 52 times [2021-03-11 22:49:08,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:08,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103696305] [2021-03-11 22:49:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:08,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:08,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:08,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:08,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:08,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:08,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:08,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:08,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:08,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:49:08,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:49:08,852 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:49:08,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:49:08,876 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:49:08,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:49:08,897 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:08,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:08,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103696305] [2021-03-11 22:49:08,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:08,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:08,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100137828] [2021-03-11 22:49:08,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:08,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:08,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:08,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:08,921 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:08,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 694 transitions, 26899 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:08,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:08,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:08,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:11,881 INFO L129 PetriNetUnfolder]: 521/8446 cut-off events. [2021-03-11 22:49:11,881 INFO L130 PetriNetUnfolder]: For 364843/371951 co-relation queries the response was YES. [2021-03-11 22:49:11,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64652 conditions, 8446 events. 521/8446 cut-off events. For 364843/371951 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 146392 event pairs, 367 based on Foata normal form. 58/8085 useless extension candidates. Maximal degree in co-relation 64491. Up to 1472 conditions per place. [2021-03-11 22:49:11,974 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 437 selfloop transitions, 381 changer transitions 1/833 dead transitions. [2021-03-11 22:49:11,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 833 transitions, 34397 flow [2021-03-11 22:49:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:11,975 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:11,975 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:11,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:11,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:11,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:11,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:11,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:11,977 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:11,977 INFO L185 Difference]: Start difference. First operand has 394 places, 694 transitions, 26899 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:11,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 833 transitions, 34397 flow [2021-03-11 22:49:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 833 transitions, 33780 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-11 22:49:15,195 INFO L241 Difference]: Finished difference. Result has 403 places, 751 transitions, 30167 flow [2021-03-11 22:49:15,196 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=26340, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30167, PETRI_PLACES=403, PETRI_TRANSITIONS=751} [2021-03-11 22:49:15,196 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 359 predicate places. [2021-03-11 22:49:15,196 INFO L480 AbstractCegarLoop]: Abstraction has has 403 places, 751 transitions, 30167 flow [2021-03-11 22:49:15,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:15,196 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:15,196 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:15,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 22:49:15,196 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash -872994566, now seen corresponding path program 53 times [2021-03-11 22:49:15,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:15,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985407800] [2021-03-11 22:49:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:15,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:15,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:15,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:15,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:15,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:15,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:49:15,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:15,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:15,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:49:15,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:49:15,235 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:49:15,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:49:15,260 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:49:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:49:15,280 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:15,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:15,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985407800] [2021-03-11 22:49:15,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:15,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:15,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19011885] [2021-03-11 22:49:15,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:15,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:15,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:15,300 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:15,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 751 transitions, 30167 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:15,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:15,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:15,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:18,525 INFO L129 PetriNetUnfolder]: 521/8421 cut-off events. [2021-03-11 22:49:18,525 INFO L130 PetriNetUnfolder]: For 379329/385545 co-relation queries the response was YES. [2021-03-11 22:49:18,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65904 conditions, 8421 events. 521/8421 cut-off events. For 379329/385545 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 145770 event pairs, 255 based on Foata normal form. 36/8058 useless extension candidates. Maximal degree in co-relation 65738. Up to 1824 conditions per place. [2021-03-11 22:49:18,623 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 542 selfloop transitions, 334 changer transitions 3/893 dead transitions. [2021-03-11 22:49:18,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 893 transitions, 37615 flow [2021-03-11 22:49:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:18,624 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:18,624 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:18,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:18,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:18,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:18,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:18,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:18,626 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:18,626 INFO L185 Difference]: Start difference. First operand has 403 places, 751 transitions, 30167 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:18,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 893 transitions, 37615 flow [2021-03-11 22:49:22,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 893 transitions, 36969 flow, removed 162 selfloop flow, removed 3 redundant places. [2021-03-11 22:49:22,085 INFO L241 Difference]: Finished difference. Result has 413 places, 825 transitions, 34046 flow [2021-03-11 22:49:22,085 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=29653, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34046, PETRI_PLACES=413, PETRI_TRANSITIONS=825} [2021-03-11 22:49:22,085 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 369 predicate places. [2021-03-11 22:49:22,086 INFO L480 AbstractCegarLoop]: Abstraction has has 413 places, 825 transitions, 34046 flow [2021-03-11 22:49:22,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:22,086 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:22,086 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:22,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 22:49:22,086 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:22,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1335920280, now seen corresponding path program 54 times [2021-03-11 22:49:22,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:22,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130263210] [2021-03-11 22:49:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:22,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:22,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:22,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:22,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:22,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:22,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:22,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:22,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:22,112 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:49:22,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:49:22,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:49:22,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:49:22,159 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:49:22,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:49:22,179 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:22,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:22,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130263210] [2021-03-11 22:49:22,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:22,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:22,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722837013] [2021-03-11 22:49:22,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:22,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:22,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:22,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:22,199 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:22,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 825 transitions, 34046 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:22,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:22,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:22,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:25,525 INFO L129 PetriNetUnfolder]: 521/8411 cut-off events. [2021-03-11 22:49:25,525 INFO L130 PetriNetUnfolder]: For 395728/402320 co-relation queries the response was YES. [2021-03-11 22:49:25,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66598 conditions, 8411 events. 521/8411 cut-off events. For 395728/402320 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 145563 event pairs, 505 based on Foata normal form. 78/8072 useless extension candidates. Maximal degree in co-relation 66427. Up to 1287 conditions per place. [2021-03-11 22:49:25,620 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 289 selfloop transitions, 536 changer transitions 1/840 dead transitions. [2021-03-11 22:49:25,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 840 transitions, 36086 flow [2021-03-11 22:49:25,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:25,621 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:25,621 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:25,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:25,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:25,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:25,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:25,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:25,623 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:25,623 INFO L185 Difference]: Start difference. First operand has 413 places, 825 transitions, 34046 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:25,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 840 transitions, 36086 flow [2021-03-11 22:49:29,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 840 transitions, 35583 flow, removed 148 selfloop flow, removed 4 redundant places. [2021-03-11 22:49:29,127 INFO L241 Difference]: Finished difference. Result has 420 places, 830 transitions, 34974 flow [2021-03-11 22:49:29,128 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=33558, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34974, PETRI_PLACES=420, PETRI_TRANSITIONS=830} [2021-03-11 22:49:29,128 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 376 predicate places. [2021-03-11 22:49:29,128 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 830 transitions, 34974 flow [2021-03-11 22:49:29,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:29,128 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:29,128 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:29,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 22:49:29,128 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:29,128 INFO L82 PathProgramCache]: Analyzing trace with hash 225592152, now seen corresponding path program 55 times [2021-03-11 22:49:29,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:29,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943902543] [2021-03-11 22:49:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:29,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:29,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:29,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:29,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:29,143 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:29,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:29,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:29,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:29,158 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:49:29,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:49:29,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:49:29,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:49:29,208 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:49:29,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:49:29,232 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:29,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:29,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943902543] [2021-03-11 22:49:29,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:29,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:29,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492028042] [2021-03-11 22:49:29,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:29,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:29,254 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:29,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 830 transitions, 34974 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:29,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:29,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:29,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:32,722 INFO L129 PetriNetUnfolder]: 521/8404 cut-off events. [2021-03-11 22:49:32,723 INFO L130 PetriNetUnfolder]: For 395600/401824 co-relation queries the response was YES. [2021-03-11 22:49:32,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67122 conditions, 8404 events. 521/8404 cut-off events. For 395600/401824 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 145486 event pairs, 505 based on Foata normal form. 78/8054 useless extension candidates. Maximal degree in co-relation 66949. Up to 1287 conditions per place. [2021-03-11 22:49:32,819 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 290 selfloop transitions, 533 changer transitions 2/839 dead transitions. [2021-03-11 22:49:32,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 839 transitions, 36770 flow [2021-03-11 22:49:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:32,822 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:32,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:32,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:32,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:32,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:32,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:32,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:32,827 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:32,827 INFO L185 Difference]: Start difference. First operand has 420 places, 830 transitions, 34974 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:32,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 839 transitions, 36770 flow [2021-03-11 22:49:36,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 839 transitions, 35810 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-11 22:49:36,262 INFO L241 Difference]: Finished difference. Result has 424 places, 830 transitions, 35107 flow [2021-03-11 22:49:36,263 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34024, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35107, PETRI_PLACES=424, PETRI_TRANSITIONS=830} [2021-03-11 22:49:36,263 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 380 predicate places. [2021-03-11 22:49:36,263 INFO L480 AbstractCegarLoop]: Abstraction has has 424 places, 830 transitions, 35107 flow [2021-03-11 22:49:36,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:36,263 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:36,263 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:36,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 22:49:36,264 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash 429858764, now seen corresponding path program 56 times [2021-03-11 22:49:36,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:36,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376467481] [2021-03-11 22:49:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:36,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:36,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:36,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:36,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:36,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:36,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:36,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:36,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:36,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:49:36,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:49:36,321 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:49:36,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:49:36,336 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:49:36,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:49:36,362 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:36,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:36,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376467481] [2021-03-11 22:49:36,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:36,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:36,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332735737] [2021-03-11 22:49:36,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:36,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:36,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:36,386 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:36,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 830 transitions, 35107 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:36,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:36,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:36,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:39,934 INFO L129 PetriNetUnfolder]: 521/8412 cut-off events. [2021-03-11 22:49:39,934 INFO L130 PetriNetUnfolder]: For 393436/400600 co-relation queries the response was YES. [2021-03-11 22:49:40,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67251 conditions, 8412 events. 521/8412 cut-off events. For 393436/400600 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 145643 event pairs, 397 based on Foata normal form. 78/8059 useless extension candidates. Maximal degree in co-relation 67077. Up to 1287 conditions per place. [2021-03-11 22:49:40,022 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 295 selfloop transitions, 526 changer transitions 2/837 dead transitions. [2021-03-11 22:49:40,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 837 transitions, 36807 flow [2021-03-11 22:49:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:40,023 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:40,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:40,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:40,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:40,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:40,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:40,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:40,025 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:40,025 INFO L185 Difference]: Start difference. First operand has 424 places, 830 transitions, 35107 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:40,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 837 transitions, 36807 flow [2021-03-11 22:49:43,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 837 transitions, 35753 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:49:43,304 INFO L241 Difference]: Finished difference. Result has 426 places, 828 transitions, 35011 flow [2021-03-11 22:49:43,304 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34063, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=526, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35011, PETRI_PLACES=426, PETRI_TRANSITIONS=828} [2021-03-11 22:49:43,304 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 382 predicate places. [2021-03-11 22:49:43,304 INFO L480 AbstractCegarLoop]: Abstraction has has 426 places, 828 transitions, 35011 flow [2021-03-11 22:49:43,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:43,304 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:43,305 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:43,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 22:49:43,305 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:43,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:43,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2034428268, now seen corresponding path program 57 times [2021-03-11 22:49:43,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:43,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237651892] [2021-03-11 22:49:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:43,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:43,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:43,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:43,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:43,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:43,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:43,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:43,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:43,342 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:49:43,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:49:43,362 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:49:43,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:49:43,390 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:49:43,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:49:43,411 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:43,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237651892] [2021-03-11 22:49:43,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:43,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:43,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7091766] [2021-03-11 22:49:43,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:43,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:43,431 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:43,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 828 transitions, 35011 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:43,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:43,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:43,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:47,007 INFO L129 PetriNetUnfolder]: 521/8402 cut-off events. [2021-03-11 22:49:47,008 INFO L130 PetriNetUnfolder]: For 392418/399582 co-relation queries the response was YES. [2021-03-11 22:49:47,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67161 conditions, 8402 events. 521/8402 cut-off events. For 392418/399582 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 145499 event pairs, 397 based on Foata normal form. 78/8050 useless extension candidates. Maximal degree in co-relation 66987. Up to 1287 conditions per place. [2021-03-11 22:49:47,088 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 288 selfloop transitions, 534 changer transitions 2/838 dead transitions. [2021-03-11 22:49:47,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 838 transitions, 36865 flow [2021-03-11 22:49:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:47,090 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:47,090 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:47,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:47,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:47,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:47,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:47,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:47,091 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:47,091 INFO L185 Difference]: Start difference. First operand has 426 places, 828 transitions, 35011 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:47,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 838 transitions, 36865 flow [2021-03-11 22:49:50,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 838 transitions, 36168 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 22:49:50,449 INFO L241 Difference]: Finished difference. Result has 430 places, 829 transitions, 35471 flow [2021-03-11 22:49:50,449 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34324, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35471, PETRI_PLACES=430, PETRI_TRANSITIONS=829} [2021-03-11 22:49:50,449 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 386 predicate places. [2021-03-11 22:49:50,449 INFO L480 AbstractCegarLoop]: Abstraction has has 430 places, 829 transitions, 35471 flow [2021-03-11 22:49:50,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:50,449 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:50,450 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:50,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 22:49:50,450 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:50,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:50,450 INFO L82 PathProgramCache]: Analyzing trace with hash 418324316, now seen corresponding path program 58 times [2021-03-11 22:49:50,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:50,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465833335] [2021-03-11 22:49:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:50,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:50,462 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:50,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:50,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:50,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:50,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:49:50,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:49:50,486 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:49:50,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:49:50,501 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:49:50,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:49:50,521 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:50,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:50,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465833335] [2021-03-11 22:49:50,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:50,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:50,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878066938] [2021-03-11 22:49:50,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:50,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:50,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:50,546 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:50,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 829 transitions, 35471 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:50,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:50,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:50,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:49:54,205 INFO L129 PetriNetUnfolder]: 521/8394 cut-off events. [2021-03-11 22:49:54,206 INFO L130 PetriNetUnfolder]: For 394144/401308 co-relation queries the response was YES. [2021-03-11 22:49:54,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67695 conditions, 8394 events. 521/8394 cut-off events. For 394144/401308 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 145265 event pairs, 397 based on Foata normal form. 78/8042 useless extension candidates. Maximal degree in co-relation 67521. Up to 1287 conditions per place. [2021-03-11 22:49:54,286 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 337 selfloop transitions, 487 changer transitions 2/840 dead transitions. [2021-03-11 22:49:54,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 840 transitions, 37357 flow [2021-03-11 22:49:54,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:49:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:49:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:49:54,288 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:49:54,288 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:49:54,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:49:54,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:49:54,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:49:54,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:54,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:54,289 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:54,289 INFO L185 Difference]: Start difference. First operand has 430 places, 829 transitions, 35471 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:49:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 840 transitions, 37357 flow [2021-03-11 22:49:57,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 840 transitions, 36561 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 22:49:57,601 INFO L241 Difference]: Finished difference. Result has 434 places, 831 transitions, 35764 flow [2021-03-11 22:49:57,602 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34685, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35764, PETRI_PLACES=434, PETRI_TRANSITIONS=831} [2021-03-11 22:49:57,602 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 390 predicate places. [2021-03-11 22:49:57,602 INFO L480 AbstractCegarLoop]: Abstraction has has 434 places, 831 transitions, 35764 flow [2021-03-11 22:49:57,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:57,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:49:57,602 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:49:57,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 22:49:57,602 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:49:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:49:57,602 INFO L82 PathProgramCache]: Analyzing trace with hash -348827834, now seen corresponding path program 59 times [2021-03-11 22:49:57,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:49:57,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899689254] [2021-03-11 22:49:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:49:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:49:57,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:49:57,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:49:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:49:57,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:49:57,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:49:57,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:49:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:49:57,628 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:49:57,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:49:57,639 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:49:57,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:49:57,663 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:49:57,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:49:57,691 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:49:57,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:49:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:49:57,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899689254] [2021-03-11 22:49:57,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:49:57,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:49:57,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115644057] [2021-03-11 22:49:57,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:49:57,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:49:57,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:49:57,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:49:57,715 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:49:57,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 831 transitions, 35764 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:49:57,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:49:57,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:49:57,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:01,231 INFO L129 PetriNetUnfolder]: 521/8386 cut-off events. [2021-03-11 22:50:01,232 INFO L130 PetriNetUnfolder]: For 398679/405843 co-relation queries the response was YES. [2021-03-11 22:50:01,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67747 conditions, 8386 events. 521/8386 cut-off events. For 398679/405843 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 145008 event pairs, 397 based on Foata normal form. 78/8034 useless extension candidates. Maximal degree in co-relation 67572. Up to 1287 conditions per place. [2021-03-11 22:50:01,332 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 329 selfloop transitions, 493 changer transitions 2/838 dead transitions. [2021-03-11 22:50:01,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 838 transitions, 37466 flow [2021-03-11 22:50:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:01,333 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:01,333 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:01,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:01,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:01,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:01,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:01,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:01,334 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:01,334 INFO L185 Difference]: Start difference. First operand has 434 places, 831 transitions, 35764 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:01,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 838 transitions, 37466 flow [2021-03-11 22:50:05,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 838 transitions, 36286 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-11 22:50:05,322 INFO L241 Difference]: Finished difference. Result has 435 places, 829 transitions, 35471 flow [2021-03-11 22:50:05,322 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34594, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=493, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35471, PETRI_PLACES=435, PETRI_TRANSITIONS=829} [2021-03-11 22:50:05,322 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 391 predicate places. [2021-03-11 22:50:05,323 INFO L480 AbstractCegarLoop]: Abstraction has has 435 places, 829 transitions, 35471 flow [2021-03-11 22:50:05,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:05,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:05,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:05,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 22:50:05,323 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:05,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1821054336, now seen corresponding path program 60 times [2021-03-11 22:50:05,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:05,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882400757] [2021-03-11 22:50:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:05,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:05,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:05,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:05,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:05,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:05,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:05,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:05,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:05,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:50:05,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:50:05,363 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:50:05,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:50:05,380 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:05,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:05,400 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:05,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:05,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882400757] [2021-03-11 22:50:05,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:05,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:05,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776256522] [2021-03-11 22:50:05,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:05,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:05,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:05,420 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:05,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 829 transitions, 35471 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:05,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:05,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:05,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:08,985 INFO L129 PetriNetUnfolder]: 521/8378 cut-off events. [2021-03-11 22:50:08,985 INFO L130 PetriNetUnfolder]: For 396649/403813 co-relation queries the response was YES. [2021-03-11 22:50:09,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67307 conditions, 8378 events. 521/8378 cut-off events. For 396649/403813 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 144756 event pairs, 397 based on Foata normal form. 78/8026 useless extension candidates. Maximal degree in co-relation 67132. Up to 1287 conditions per place. [2021-03-11 22:50:09,084 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 329 selfloop transitions, 491 changer transitions 2/836 dead transitions. [2021-03-11 22:50:09,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 836 transitions, 37169 flow [2021-03-11 22:50:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:09,085 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:09,085 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:09,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:09,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:09,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:09,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:09,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:09,091 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:09,091 INFO L185 Difference]: Start difference. First operand has 435 places, 829 transitions, 35471 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:09,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 836 transitions, 37169 flow [2021-03-11 22:50:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 836 transitions, 36154 flow, removed 10 selfloop flow, removed 9 redundant places. [2021-03-11 22:50:12,895 INFO L241 Difference]: Finished difference. Result has 434 places, 827 transitions, 35347 flow [2021-03-11 22:50:12,895 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34466, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=491, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35347, PETRI_PLACES=434, PETRI_TRANSITIONS=827} [2021-03-11 22:50:12,895 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 390 predicate places. [2021-03-11 22:50:12,895 INFO L480 AbstractCegarLoop]: Abstraction has has 434 places, 827 transitions, 35347 flow [2021-03-11 22:50:12,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:12,896 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:12,896 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:12,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 22:50:12,896 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:12,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1367949058, now seen corresponding path program 61 times [2021-03-11 22:50:12,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:12,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779363048] [2021-03-11 22:50:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:12,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:12,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:12,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:12,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:12,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:12,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:12,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:12,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:12,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:50:12,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:50:12,939 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:50:12,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:50:12,956 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:12,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:12,980 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:12,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779363048] [2021-03-11 22:50:13,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:13,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804126603] [2021-03-11 22:50:13,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:13,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:13,004 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:13,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 827 transitions, 35347 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:13,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:13,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:13,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:16,619 INFO L129 PetriNetUnfolder]: 521/8369 cut-off events. [2021-03-11 22:50:16,619 INFO L130 PetriNetUnfolder]: For 394810/401969 co-relation queries the response was YES. [2021-03-11 22:50:16,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67235 conditions, 8369 events. 521/8369 cut-off events. For 394810/401969 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 144673 event pairs, 397 based on Foata normal form. 76/8016 useless extension candidates. Maximal degree in co-relation 67063. Up to 1287 conditions per place. [2021-03-11 22:50:16,721 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 315 selfloop transitions, 504 changer transitions 1/834 dead transitions. [2021-03-11 22:50:16,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 834 transitions, 37041 flow [2021-03-11 22:50:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:16,722 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:16,722 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:16,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:16,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:16,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:16,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:16,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:16,723 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:16,723 INFO L185 Difference]: Start difference. First operand has 434 places, 827 transitions, 35347 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:16,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 834 transitions, 37041 flow [2021-03-11 22:50:20,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 834 transitions, 36062 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 22:50:20,538 INFO L241 Difference]: Finished difference. Result has 436 places, 826 transitions, 35327 flow [2021-03-11 22:50:20,538 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34378, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35327, PETRI_PLACES=436, PETRI_TRANSITIONS=826} [2021-03-11 22:50:20,538 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 392 predicate places. [2021-03-11 22:50:20,538 INFO L480 AbstractCegarLoop]: Abstraction has has 436 places, 826 transitions, 35327 flow [2021-03-11 22:50:20,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:20,538 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:20,538 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:20,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 22:50:20,539 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1866544966, now seen corresponding path program 62 times [2021-03-11 22:50:20,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:20,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996977664] [2021-03-11 22:50:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:20,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:20,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:20,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:20,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:20,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:20,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:20,557 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:20,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:20,571 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:50:20,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:50:20,584 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:50:20,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:50:20,603 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:20,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:20,624 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:20,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:20,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996977664] [2021-03-11 22:50:20,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:20,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:20,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887712076] [2021-03-11 22:50:20,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:20,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:20,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:20,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:20,644 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:20,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 826 transitions, 35327 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:20,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:20,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:20,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:24,319 INFO L129 PetriNetUnfolder]: 521/8364 cut-off events. [2021-03-11 22:50:24,319 INFO L130 PetriNetUnfolder]: For 394249/401408 co-relation queries the response was YES. [2021-03-11 22:50:24,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67217 conditions, 8364 events. 521/8364 cut-off events. For 394249/401408 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 144563 event pairs, 397 based on Foata normal form. 76/8012 useless extension candidates. Maximal degree in co-relation 67045. Up to 1287 conditions per place. [2021-03-11 22:50:24,400 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 318 selfloop transitions, 500 changer transitions 1/833 dead transitions. [2021-03-11 22:50:24,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 833 transitions, 37019 flow [2021-03-11 22:50:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:24,401 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:24,401 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:24,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:24,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:24,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:24,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:24,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:24,402 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:24,402 INFO L185 Difference]: Start difference. First operand has 436 places, 826 transitions, 35327 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 833 transitions, 37019 flow [2021-03-11 22:50:27,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 833 transitions, 36019 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:50:27,856 INFO L241 Difference]: Finished difference. Result has 438 places, 825 transitions, 35273 flow [2021-03-11 22:50:27,857 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34337, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35273, PETRI_PLACES=438, PETRI_TRANSITIONS=825} [2021-03-11 22:50:27,857 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 394 predicate places. [2021-03-11 22:50:27,857 INFO L480 AbstractCegarLoop]: Abstraction has has 438 places, 825 transitions, 35273 flow [2021-03-11 22:50:27,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:27,857 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:27,857 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:27,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 22:50:27,857 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash 265421362, now seen corresponding path program 63 times [2021-03-11 22:50:27,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:27,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899318109] [2021-03-11 22:50:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:27,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:27,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:27,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:27,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:27,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:27,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:27,884 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:27,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:27,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:50:27,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:50:27,908 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:50:27,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:50:27,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:50:27,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:50:27,950 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:27,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:27,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899318109] [2021-03-11 22:50:27,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:27,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:27,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101969646] [2021-03-11 22:50:27,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:27,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:27,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:27,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:27,968 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:27,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 825 transitions, 35273 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:27,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:27,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:27,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:31,560 INFO L129 PetriNetUnfolder]: 521/8360 cut-off events. [2021-03-11 22:50:31,560 INFO L130 PetriNetUnfolder]: For 393920/401084 co-relation queries the response was YES. [2021-03-11 22:50:31,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67210 conditions, 8360 events. 521/8360 cut-off events. For 393920/401084 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 144483 event pairs, 397 based on Foata normal form. 78/8010 useless extension candidates. Maximal degree in co-relation 67038. Up to 1287 conditions per place. [2021-03-11 22:50:31,654 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 297 selfloop transitions, 519 changer transitions 2/832 dead transitions. [2021-03-11 22:50:31,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 832 transitions, 36963 flow [2021-03-11 22:50:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:31,655 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:31,655 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:31,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:31,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:31,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:31,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:31,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:31,657 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:31,657 INFO L185 Difference]: Start difference. First operand has 438 places, 825 transitions, 35273 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:31,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 832 transitions, 36963 flow [2021-03-11 22:50:35,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 832 transitions, 35938 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-11 22:50:35,142 INFO L241 Difference]: Finished difference. Result has 439 places, 823 transitions, 35167 flow [2021-03-11 22:50:35,143 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34258, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35167, PETRI_PLACES=439, PETRI_TRANSITIONS=823} [2021-03-11 22:50:35,143 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2021-03-11 22:50:35,143 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 823 transitions, 35167 flow [2021-03-11 22:50:35,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:35,143 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:35,143 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:35,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 22:50:35,144 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:35,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1412919654, now seen corresponding path program 64 times [2021-03-11 22:50:35,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:35,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609365033] [2021-03-11 22:50:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:35,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:35,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:35,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:35,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:35,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:35,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:35,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:35,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:35,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:50:35,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:50:35,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:50:35,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:50:35,215 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:35,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:35,237 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:35,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:35,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609365033] [2021-03-11 22:50:35,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:35,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:35,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674603831] [2021-03-11 22:50:35,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:35,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:35,261 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:35,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 823 transitions, 35167 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:35,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:35,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:35,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:38,851 INFO L129 PetriNetUnfolder]: 521/8355 cut-off events. [2021-03-11 22:50:38,851 INFO L130 PetriNetUnfolder]: For 392494/399658 co-relation queries the response was YES. [2021-03-11 22:50:38,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67159 conditions, 8355 events. 521/8355 cut-off events. For 392494/399658 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 144288 event pairs, 397 based on Foata normal form. 78/8006 useless extension candidates. Maximal degree in co-relation 66988. Up to 1287 conditions per place. [2021-03-11 22:50:38,933 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 298 selfloop transitions, 516 changer transitions 2/830 dead transitions. [2021-03-11 22:50:38,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 830 transitions, 36853 flow [2021-03-11 22:50:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:38,934 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:38,934 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:38,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:38,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:38,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:38,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:38,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:38,935 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:38,935 INFO L185 Difference]: Start difference. First operand has 439 places, 823 transitions, 35167 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 830 transitions, 36853 flow [2021-03-11 22:50:42,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 830 transitions, 35749 flow, removed 28 selfloop flow, removed 6 redundant places. [2021-03-11 22:50:42,329 INFO L241 Difference]: Finished difference. Result has 441 places, 821 transitions, 34991 flow [2021-03-11 22:50:42,329 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34073, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=516, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34991, PETRI_PLACES=441, PETRI_TRANSITIONS=821} [2021-03-11 22:50:42,330 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 397 predicate places. [2021-03-11 22:50:42,330 INFO L480 AbstractCegarLoop]: Abstraction has has 441 places, 821 transitions, 34991 flow [2021-03-11 22:50:42,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:42,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:42,333 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:42,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 22:50:42,333 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1605182142, now seen corresponding path program 65 times [2021-03-11 22:50:42,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:42,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965893358] [2021-03-11 22:50:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:42,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:42,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:42,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:42,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:42,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:42,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:42,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:42,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:42,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:50:42,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:50:42,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:50:42,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:50:42,407 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:42,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:42,431 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:42,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:42,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965893358] [2021-03-11 22:50:42,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:42,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:42,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224966391] [2021-03-11 22:50:42,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:42,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:42,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:42,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:42,454 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:42,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 821 transitions, 34991 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:42,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:42,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:42,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:46,154 INFO L129 PetriNetUnfolder]: 521/8339 cut-off events. [2021-03-11 22:50:46,154 INFO L130 PetriNetUnfolder]: For 387183/394347 co-relation queries the response was YES. [2021-03-11 22:50:46,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66995 conditions, 8339 events. 521/8339 cut-off events. For 387183/394347 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 143958 event pairs, 397 based on Foata normal form. 78/7992 useless extension candidates. Maximal degree in co-relation 66825. Up to 1287 conditions per place. [2021-03-11 22:50:46,234 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 347 selfloop transitions, 486 changer transitions 1/848 dead transitions. [2021-03-11 22:50:46,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 848 transitions, 37658 flow [2021-03-11 22:50:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:46,236 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:46,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:46,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:46,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:46,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:46,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:46,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:46,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:46,237 INFO L185 Difference]: Start difference. First operand has 441 places, 821 transitions, 34991 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:46,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 848 transitions, 37658 flow [2021-03-11 22:50:49,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 848 transitions, 36604 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-11 22:50:49,490 INFO L241 Difference]: Finished difference. Result has 443 places, 820 transitions, 34897 flow [2021-03-11 22:50:49,490 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=33979, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34897, PETRI_PLACES=443, PETRI_TRANSITIONS=820} [2021-03-11 22:50:49,490 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 399 predicate places. [2021-03-11 22:50:49,490 INFO L480 AbstractCegarLoop]: Abstraction has has 443 places, 820 transitions, 34897 flow [2021-03-11 22:50:49,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:49,490 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:49,491 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:49,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 22:50:49,491 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1764345592, now seen corresponding path program 66 times [2021-03-11 22:50:49,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:49,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061272813] [2021-03-11 22:50:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:49,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:49,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:49,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:49,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:49,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:49,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:49,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:49,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:49,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:50:49,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:50:49,529 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:50:49,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:50:49,545 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:49,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:49,566 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:49,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:49,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061272813] [2021-03-11 22:50:49,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:49,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:49,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289867403] [2021-03-11 22:50:49,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:49,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:49,587 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:49,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 820 transitions, 34897 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:49,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:49,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:49,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:50:53,010 INFO L129 PetriNetUnfolder]: 521/8332 cut-off events. [2021-03-11 22:50:53,010 INFO L130 PetriNetUnfolder]: For 385381/392400 co-relation queries the response was YES. [2021-03-11 22:50:53,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66961 conditions, 8332 events. 521/8332 cut-off events. For 385381/392400 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 143843 event pairs, 397 based on Foata normal form. 78/7985 useless extension candidates. Maximal degree in co-relation 66791. Up to 1287 conditions per place. [2021-03-11 22:50:53,112 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 348 selfloop transitions, 483 changer transitions 2/847 dead transitions. [2021-03-11 22:50:53,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 847 transitions, 37530 flow [2021-03-11 22:50:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:50:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:50:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:50:53,113 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:50:53,113 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:50:53,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:50:53,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:50:53,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:50:53,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:53,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:53,114 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:53,114 INFO L185 Difference]: Start difference. First operand has 443 places, 820 transitions, 34897 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:50:53,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 847 transitions, 37530 flow [2021-03-11 22:50:56,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 847 transitions, 36469 flow, removed 15 selfloop flow, removed 10 redundant places. [2021-03-11 22:50:56,509 INFO L241 Difference]: Finished difference. Result has 443 places, 826 transitions, 35187 flow [2021-03-11 22:50:56,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=33846, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35187, PETRI_PLACES=443, PETRI_TRANSITIONS=826} [2021-03-11 22:50:56,509 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 399 predicate places. [2021-03-11 22:50:56,509 INFO L480 AbstractCegarLoop]: Abstraction has has 443 places, 826 transitions, 35187 flow [2021-03-11 22:50:56,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:56,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:50:56,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:50:56,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 22:50:56,510 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:50:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:50:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash -549508994, now seen corresponding path program 67 times [2021-03-11 22:50:56,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:50:56,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349642862] [2021-03-11 22:50:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:50:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:50:56,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:56,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:50:56,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:50:56,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:50:56,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:50:56,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:50:56,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:50:56,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:50:56,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:50:56,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:50:56,554 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:50:56,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:50:56,573 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:50:56,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:50:56,594 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:50:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:50:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:50:56,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349642862] [2021-03-11 22:50:56,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:50:56,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:50:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777222581] [2021-03-11 22:50:56,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:50:56,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:50:56,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:50:56,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:50:56,614 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:50:56,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 826 transitions, 35187 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:50:56,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:50:56,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:50:56,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:00,051 INFO L129 PetriNetUnfolder]: 521/8324 cut-off events. [2021-03-11 22:51:00,051 INFO L130 PetriNetUnfolder]: For 386593/393607 co-relation queries the response was YES. [2021-03-11 22:51:00,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66959 conditions, 8324 events. 521/8324 cut-off events. For 386593/393607 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 143711 event pairs, 397 based on Foata normal form. 76/7975 useless extension candidates. Maximal degree in co-relation 66791. Up to 1287 conditions per place. [2021-03-11 22:51:00,148 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 339 selfloop transitions, 491 changer transitions 1/845 dead transitions. [2021-03-11 22:51:00,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 845 transitions, 37427 flow [2021-03-11 22:51:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:00,149 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:00,149 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:00,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:00,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:00,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:00,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:00,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:00,151 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:00,151 INFO L185 Difference]: Start difference. First operand has 443 places, 826 transitions, 35187 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:00,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 845 transitions, 37427 flow [2021-03-11 22:51:03,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 845 transitions, 36724 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 22:51:03,793 INFO L241 Difference]: Finished difference. Result has 447 places, 837 transitions, 36038 flow [2021-03-11 22:51:03,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34494, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36038, PETRI_PLACES=447, PETRI_TRANSITIONS=837} [2021-03-11 22:51:03,793 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2021-03-11 22:51:03,793 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 837 transitions, 36038 flow [2021-03-11 22:51:03,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:03,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:03,794 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:03,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 22:51:03,794 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1224540990, now seen corresponding path program 68 times [2021-03-11 22:51:03,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:03,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634548772] [2021-03-11 22:51:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:03,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:03,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:03,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:03,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:03,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:03,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:03,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:03,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:03,820 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:51:03,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:51:03,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:03,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:03,848 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:03,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:03,869 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:03,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:03,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634548772] [2021-03-11 22:51:03,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:03,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:03,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119421879] [2021-03-11 22:51:03,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:03,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:03,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:03,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:03,890 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:03,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 837 transitions, 36038 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:03,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:03,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:03,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:07,519 INFO L129 PetriNetUnfolder]: 521/8303 cut-off events. [2021-03-11 22:51:07,520 INFO L130 PetriNetUnfolder]: For 393283/399384 co-relation queries the response was YES. [2021-03-11 22:51:07,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67526 conditions, 8303 events. 521/8303 cut-off events. For 393283/399384 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 143279 event pairs, 505 based on Foata normal form. 76/7958 useless extension candidates. Maximal degree in co-relation 67358. Up to 1287 conditions per place. [2021-03-11 22:51:07,596 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 349 selfloop transitions, 480 changer transitions 1/844 dead transitions. [2021-03-11 22:51:07,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 844 transitions, 37752 flow [2021-03-11 22:51:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:07,597 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:07,597 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:07,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:07,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:07,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:07,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:07,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:07,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:07,598 INFO L185 Difference]: Start difference. First operand has 447 places, 837 transitions, 36038 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:07,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 844 transitions, 37752 flow [2021-03-11 22:51:10,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 844 transitions, 36848 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 22:51:10,951 INFO L241 Difference]: Finished difference. Result has 450 places, 836 transitions, 36044 flow [2021-03-11 22:51:10,951 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=35144, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36044, PETRI_PLACES=450, PETRI_TRANSITIONS=836} [2021-03-11 22:51:10,952 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 406 predicate places. [2021-03-11 22:51:10,952 INFO L480 AbstractCegarLoop]: Abstraction has has 450 places, 836 transitions, 36044 flow [2021-03-11 22:51:10,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:10,952 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:10,952 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:10,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 22:51:10,952 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash 376711986, now seen corresponding path program 69 times [2021-03-11 22:51:10,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:10,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78843681] [2021-03-11 22:51:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:10,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:10,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:10,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:10,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:10,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:10,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:10,970 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:10,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:10,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:51:10,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:51:10,990 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:51:10,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:51:11,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:11,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:11,028 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:11,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:11,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78843681] [2021-03-11 22:51:11,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:11,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:11,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461122925] [2021-03-11 22:51:11,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:11,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:11,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:11,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:11,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:11,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 836 transitions, 36044 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:11,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:11,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:11,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:14,580 INFO L129 PetriNetUnfolder]: 521/8312 cut-off events. [2021-03-11 22:51:14,581 INFO L130 PetriNetUnfolder]: For 390740/397759 co-relation queries the response was YES. [2021-03-11 22:51:14,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67657 conditions, 8312 events. 521/8312 cut-off events. For 390740/397759 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 143374 event pairs, 397 based on Foata normal form. 78/7966 useless extension candidates. Maximal degree in co-relation 67489. Up to 1287 conditions per place. [2021-03-11 22:51:14,670 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 338 selfloop transitions, 489 changer transitions 2/843 dead transitions. [2021-03-11 22:51:14,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 843 transitions, 37756 flow [2021-03-11 22:51:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:14,671 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:14,671 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:14,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:14,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:14,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:14,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:14,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:14,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:14,672 INFO L185 Difference]: Start difference. First operand has 450 places, 836 transitions, 36044 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:14,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 843 transitions, 37756 flow [2021-03-11 22:51:18,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 843 transitions, 36785 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-11 22:51:18,145 INFO L241 Difference]: Finished difference. Result has 451 places, 834 transitions, 35945 flow [2021-03-11 22:51:18,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=35083, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35945, PETRI_PLACES=451, PETRI_TRANSITIONS=834} [2021-03-11 22:51:18,146 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 407 predicate places. [2021-03-11 22:51:18,146 INFO L480 AbstractCegarLoop]: Abstraction has has 451 places, 834 transitions, 35945 flow [2021-03-11 22:51:18,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:18,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:18,146 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:18,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 22:51:18,146 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:18,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1111478320, now seen corresponding path program 70 times [2021-03-11 22:51:18,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:18,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237721682] [2021-03-11 22:51:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:18,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:18,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:18,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:18,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:18,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:18,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:18,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:18,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:18,172 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:18,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:18,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:51:18,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:51:18,208 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:18,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:18,232 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:18,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237721682] [2021-03-11 22:51:18,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:18,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:18,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260989291] [2021-03-11 22:51:18,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:18,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:18,256 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:18,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 834 transitions, 35945 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:18,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:18,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:18,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:21,865 INFO L129 PetriNetUnfolder]: 491/8578 cut-off events. [2021-03-11 22:51:21,865 INFO L130 PetriNetUnfolder]: For 398809/405828 co-relation queries the response was YES. [2021-03-11 22:51:21,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69190 conditions, 8578 events. 491/8578 cut-off events. For 398809/405828 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 149670 event pairs, 367 based on Foata normal form. 64/8201 useless extension candidates. Maximal degree in co-relation 69023. Up to 1460 conditions per place. [2021-03-11 22:51:21,946 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 498 selfloop transitions, 398 changer transitions 1/911 dead transitions. [2021-03-11 22:51:21,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 911 transitions, 40832 flow [2021-03-11 22:51:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:21,948 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:21,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:21,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:21,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:21,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:21,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:21,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:21,949 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:21,949 INFO L185 Difference]: Start difference. First operand has 451 places, 834 transitions, 35945 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:21,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 911 transitions, 40832 flow [2021-03-11 22:51:25,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 911 transitions, 39824 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:51:25,391 INFO L241 Difference]: Finished difference. Result has 457 places, 852 transitions, 36774 flow [2021-03-11 22:51:25,391 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=34991, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36774, PETRI_PLACES=457, PETRI_TRANSITIONS=852} [2021-03-11 22:51:25,391 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 413 predicate places. [2021-03-11 22:51:25,391 INFO L480 AbstractCegarLoop]: Abstraction has has 457 places, 852 transitions, 36774 flow [2021-03-11 22:51:25,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:25,391 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:25,391 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:25,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 22:51:25,391 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:25,392 INFO L82 PathProgramCache]: Analyzing trace with hash -37424200, now seen corresponding path program 71 times [2021-03-11 22:51:25,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:25,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663911103] [2021-03-11 22:51:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:25,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:25,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:25,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:25,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:25,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:25,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:25,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:25,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:25,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:25,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:25,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:51:25,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:51:25,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:25,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:25,480 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:25,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:25,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663911103] [2021-03-11 22:51:25,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:25,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:25,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42523512] [2021-03-11 22:51:25,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:25,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:25,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:25,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:25,500 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:25,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 852 transitions, 36774 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:25,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:25,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:25,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:29,268 INFO L129 PetriNetUnfolder]: 491/8581 cut-off events. [2021-03-11 22:51:29,268 INFO L130 PetriNetUnfolder]: For 408253/415286 co-relation queries the response was YES. [2021-03-11 22:51:29,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69355 conditions, 8581 events. 491/8581 cut-off events. For 408253/415286 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 149800 event pairs, 349 based on Foata normal form. 64/8201 useless extension candidates. Maximal degree in co-relation 69184. Up to 1424 conditions per place. [2021-03-11 22:51:29,348 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 466 selfloop transitions, 439 changer transitions 2/921 dead transitions. [2021-03-11 22:51:29,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 921 transitions, 41367 flow [2021-03-11 22:51:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:29,350 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:29,350 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:29,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:29,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:29,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:29,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:29,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:29,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:29,351 INFO L185 Difference]: Start difference. First operand has 457 places, 852 transitions, 36774 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:29,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 921 transitions, 41367 flow [2021-03-11 22:51:32,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 921 transitions, 40706 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-03-11 22:51:32,943 INFO L241 Difference]: Finished difference. Result has 465 places, 884 transitions, 38783 flow [2021-03-11 22:51:32,944 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=36150, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38783, PETRI_PLACES=465, PETRI_TRANSITIONS=884} [2021-03-11 22:51:32,944 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 421 predicate places. [2021-03-11 22:51:32,944 INFO L480 AbstractCegarLoop]: Abstraction has has 465 places, 884 transitions, 38783 flow [2021-03-11 22:51:32,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:32,944 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:32,944 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:32,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 22:51:32,944 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:32,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1962030478, now seen corresponding path program 72 times [2021-03-11 22:51:32,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:32,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310466901] [2021-03-11 22:51:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:32,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:32,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:32,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:32,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:32,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:32,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:32,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:32,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:32,970 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:51:32,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:51:32,983 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:32,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:32,999 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:32,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:33,023 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:33,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:33,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310466901] [2021-03-11 22:51:33,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:33,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:33,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098171444] [2021-03-11 22:51:33,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:33,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:33,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:33,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:33,045 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:33,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 884 transitions, 38783 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:33,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:33,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:33,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:37,093 INFO L129 PetriNetUnfolder]: 473/8754 cut-off events. [2021-03-11 22:51:37,093 INFO L130 PetriNetUnfolder]: For 425962/432981 co-relation queries the response was YES. [2021-03-11 22:51:37,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71196 conditions, 8754 events. 473/8754 cut-off events. For 425962/432981 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 153930 event pairs, 349 based on Foata normal form. 64/8370 useless extension candidates. Maximal degree in co-relation 71021. Up to 1494 conditions per place. [2021-03-11 22:51:37,174 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 543 selfloop transitions, 409 changer transitions 2/968 dead transitions. [2021-03-11 22:51:37,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 968 transitions, 44260 flow [2021-03-11 22:51:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:37,175 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:37,175 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:37,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:37,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:37,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:37,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:37,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:37,176 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:37,176 INFO L185 Difference]: Start difference. First operand has 465 places, 884 transitions, 38783 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:37,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 968 transitions, 44260 flow [2021-03-11 22:51:41,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 968 transitions, 43790 flow, removed 74 selfloop flow, removed 3 redundant places. [2021-03-11 22:51:41,071 INFO L241 Difference]: Finished difference. Result has 474 places, 906 transitions, 40391 flow [2021-03-11 22:51:41,072 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38339, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40391, PETRI_PLACES=474, PETRI_TRANSITIONS=906} [2021-03-11 22:51:41,072 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 430 predicate places. [2021-03-11 22:51:41,072 INFO L480 AbstractCegarLoop]: Abstraction has has 474 places, 906 transitions, 40391 flow [2021-03-11 22:51:41,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:41,072 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:41,072 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:41,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 22:51:41,072 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:41,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:41,073 INFO L82 PathProgramCache]: Analyzing trace with hash 105112608, now seen corresponding path program 73 times [2021-03-11 22:51:41,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:41,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366590712] [2021-03-11 22:51:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:41,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:41,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:41,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:41,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:41,090 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:41,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:41,096 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:41,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:41,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:51:41,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:51:41,120 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:41,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:41,135 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:41,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:41,155 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:41,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:41,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366590712] [2021-03-11 22:51:41,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:41,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:41,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588379952] [2021-03-11 22:51:41,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:41,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:41,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:41,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:41,175 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:41,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 906 transitions, 40391 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:41,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:41,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:41,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:45,287 INFO L129 PetriNetUnfolder]: 473/8747 cut-off events. [2021-03-11 22:51:45,287 INFO L130 PetriNetUnfolder]: For 439959/447089 co-relation queries the response was YES. [2021-03-11 22:51:45,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71999 conditions, 8747 events. 473/8747 cut-off events. For 439959/447089 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 153571 event pairs, 349 based on Foata normal form. 64/8365 useless extension candidates. Maximal degree in co-relation 71820. Up to 1423 conditions per place. [2021-03-11 22:51:45,371 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 463 selfloop transitions, 446 changer transitions 2/925 dead transitions. [2021-03-11 22:51:45,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 925 transitions, 42779 flow [2021-03-11 22:51:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:45,373 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:45,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:45,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:45,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:45,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:45,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:45,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:45,374 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:45,374 INFO L185 Difference]: Start difference. First operand has 474 places, 906 transitions, 40391 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:45,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 925 transitions, 42779 flow [2021-03-11 22:51:49,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 925 transitions, 42374 flow, removed 37 selfloop flow, removed 5 redundant places. [2021-03-11 22:51:49,542 INFO L241 Difference]: Finished difference. Result has 478 places, 907 transitions, 41022 flow [2021-03-11 22:51:49,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39996, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41022, PETRI_PLACES=478, PETRI_TRANSITIONS=907} [2021-03-11 22:51:49,542 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 434 predicate places. [2021-03-11 22:51:49,542 INFO L480 AbstractCegarLoop]: Abstraction has has 478 places, 907 transitions, 41022 flow [2021-03-11 22:51:49,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:49,543 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:49,543 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:49,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 22:51:49,543 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:49,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:49,543 INFO L82 PathProgramCache]: Analyzing trace with hash -247623610, now seen corresponding path program 74 times [2021-03-11 22:51:49,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:49,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797354345] [2021-03-11 22:51:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:49,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:49,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:49,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:49,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:49,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:49,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:49,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:49,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:49,578 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:51:49,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:51:49,591 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:49,606 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:49,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:49,627 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:49,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:49,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797354345] [2021-03-11 22:51:49,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:49,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:49,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101564519] [2021-03-11 22:51:49,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:49,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:49,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:49,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:49,648 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:49,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 907 transitions, 41022 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:49,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:49,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:49,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:51:53,699 INFO L129 PetriNetUnfolder]: 473/8740 cut-off events. [2021-03-11 22:51:53,700 INFO L130 PetriNetUnfolder]: For 446393/453539 co-relation queries the response was YES. [2021-03-11 22:51:53,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72584 conditions, 8740 events. 473/8740 cut-off events. For 446393/453539 co-relation queries the response was YES. Maximal size of possible extension queue 1372. Compared 153469 event pairs, 349 based on Foata normal form. 64/8363 useless extension candidates. Maximal degree in co-relation 72406. Up to 1423 conditions per place. [2021-03-11 22:51:53,784 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 465 selfloop transitions, 443 changer transitions 1/923 dead transitions. [2021-03-11 22:51:53,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 923 transitions, 43238 flow [2021-03-11 22:51:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:51:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:51:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:51:53,786 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:51:53,786 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:51:53,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:51:53,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:51:53,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:51:53,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:53,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:53,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:53,787 INFO L185 Difference]: Start difference. First operand has 478 places, 907 transitions, 41022 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:51:53,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 923 transitions, 43238 flow [2021-03-11 22:51:58,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 923 transitions, 42271 flow, removed 35 selfloop flow, removed 6 redundant places. [2021-03-11 22:51:58,030 INFO L241 Difference]: Finished difference. Result has 480 places, 906 transitions, 40897 flow [2021-03-11 22:51:58,031 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40065, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40897, PETRI_PLACES=480, PETRI_TRANSITIONS=906} [2021-03-11 22:51:58,031 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 436 predicate places. [2021-03-11 22:51:58,031 INFO L480 AbstractCegarLoop]: Abstraction has has 480 places, 906 transitions, 40897 flow [2021-03-11 22:51:58,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:58,031 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:51:58,031 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:51:58,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 22:51:58,031 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:51:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:51:58,032 INFO L82 PathProgramCache]: Analyzing trace with hash 410706754, now seen corresponding path program 75 times [2021-03-11 22:51:58,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:51:58,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923389204] [2021-03-11 22:51:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:51:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:51:58,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:51:58,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:51:58,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:51:58,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:51:58,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:51:58,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:51:58,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:51:58,057 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:51:58,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:51:58,078 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:51:58,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:51:58,102 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:51:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:51:58,122 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:51:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:51:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:51:58,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923389204] [2021-03-11 22:51:58,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:51:58,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:51:58,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817085887] [2021-03-11 22:51:58,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:51:58,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:51:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:51:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:51:58,155 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:51:58,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 906 transitions, 40897 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:51:58,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:51:58,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:51:58,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:02,231 INFO L129 PetriNetUnfolder]: 473/8734 cut-off events. [2021-03-11 22:52:02,231 INFO L130 PetriNetUnfolder]: For 444750/451896 co-relation queries the response was YES. [2021-03-11 22:52:02,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72478 conditions, 8734 events. 473/8734 cut-off events. For 444750/451896 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 153322 event pairs, 349 based on Foata normal form. 64/8357 useless extension candidates. Maximal degree in co-relation 72300. Up to 1423 conditions per place. [2021-03-11 22:52:02,319 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 470 changer transitions 2/922 dead transitions. [2021-03-11 22:52:02,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 922 transitions, 43111 flow [2021-03-11 22:52:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:02,321 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:02,321 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:02,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:02,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:02,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:02,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:02,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:02,322 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:02,322 INFO L185 Difference]: Start difference. First operand has 480 places, 906 transitions, 40897 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:02,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 922 transitions, 43111 flow [2021-03-11 22:52:06,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 922 transitions, 42234 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:52:06,650 INFO L241 Difference]: Finished difference. Result has 482 places, 904 transitions, 40864 flow [2021-03-11 22:52:06,650 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40030, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40864, PETRI_PLACES=482, PETRI_TRANSITIONS=904} [2021-03-11 22:52:06,650 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 438 predicate places. [2021-03-11 22:52:06,650 INFO L480 AbstractCegarLoop]: Abstraction has has 482 places, 904 transitions, 40864 flow [2021-03-11 22:52:06,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:06,651 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:06,651 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:06,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 22:52:06,651 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:06,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2145487686, now seen corresponding path program 76 times [2021-03-11 22:52:06,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:06,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144520969] [2021-03-11 22:52:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:06,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:06,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:06,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:06,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:06,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:06,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:06,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:06,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:06,678 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:52:06,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:52:06,700 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:52:06,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:52:06,724 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:52:06,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:52:06,744 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:06,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:06,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144520969] [2021-03-11 22:52:06,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:06,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:06,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139836630] [2021-03-11 22:52:06,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:06,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:06,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:06,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:06,771 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:06,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 904 transitions, 40864 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:06,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:06,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:06,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:10,771 INFO L129 PetriNetUnfolder]: 473/8726 cut-off events. [2021-03-11 22:52:10,772 INFO L130 PetriNetUnfolder]: For 444449/451595 co-relation queries the response was YES. [2021-03-11 22:52:10,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72493 conditions, 8726 events. 473/8726 cut-off events. For 444449/451595 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 153170 event pairs, 349 based on Foata normal form. 64/8349 useless extension candidates. Maximal degree in co-relation 72315. Up to 1423 conditions per place. [2021-03-11 22:52:10,866 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 434 selfloop transitions, 470 changer transitions 2/920 dead transitions. [2021-03-11 22:52:10,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 920 transitions, 43074 flow [2021-03-11 22:52:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:10,868 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:10,868 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:10,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:10,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:10,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:10,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:10,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:10,869 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:10,869 INFO L185 Difference]: Start difference. First operand has 482 places, 904 transitions, 40864 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:10,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 920 transitions, 43074 flow [2021-03-11 22:52:15,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 920 transitions, 42197 flow, removed 18 selfloop flow, removed 6 redundant places. [2021-03-11 22:52:15,227 INFO L241 Difference]: Finished difference. Result has 484 places, 902 transitions, 40822 flow [2021-03-11 22:52:15,228 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39997, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40822, PETRI_PLACES=484, PETRI_TRANSITIONS=902} [2021-03-11 22:52:15,228 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 440 predicate places. [2021-03-11 22:52:15,228 INFO L480 AbstractCegarLoop]: Abstraction has has 484 places, 902 transitions, 40822 flow [2021-03-11 22:52:15,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:15,228 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:15,228 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:15,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 22:52:15,228 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:15,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1941433830, now seen corresponding path program 77 times [2021-03-11 22:52:15,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:15,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391191275] [2021-03-11 22:52:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:15,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:15,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:15,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:15,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:15,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:15,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:15,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:52:15,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:52:15,274 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:52:15,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:52:15,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:52:15,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:52:15,318 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:15,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:15,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391191275] [2021-03-11 22:52:15,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:15,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:15,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640702341] [2021-03-11 22:52:15,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:15,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:15,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:15,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:15,338 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:15,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 902 transitions, 40822 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:15,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:15,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:15,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:19,362 INFO L129 PetriNetUnfolder]: 473/8718 cut-off events. [2021-03-11 22:52:19,363 INFO L130 PetriNetUnfolder]: For 443060/450201 co-relation queries the response was YES. [2021-03-11 22:52:19,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72598 conditions, 8718 events. 473/8718 cut-off events. For 443060/450201 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 153085 event pairs, 349 based on Foata normal form. 62/8339 useless extension candidates. Maximal degree in co-relation 72421. Up to 1423 conditions per place. [2021-03-11 22:52:19,455 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 474 selfloop transitions, 446 changer transitions 2/936 dead transitions. [2021-03-11 22:52:19,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 936 transitions, 43886 flow [2021-03-11 22:52:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:19,456 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:19,456 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:19,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:19,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:19,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:19,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:19,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:19,457 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:19,458 INFO L185 Difference]: Start difference. First operand has 484 places, 902 transitions, 40822 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:19,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 936 transitions, 43886 flow [2021-03-11 22:52:23,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 936 transitions, 42940 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:52:23,662 INFO L241 Difference]: Finished difference. Result has 487 places, 910 transitions, 41217 flow [2021-03-11 22:52:23,662 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39906, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41217, PETRI_PLACES=487, PETRI_TRANSITIONS=910} [2021-03-11 22:52:23,662 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 443 predicate places. [2021-03-11 22:52:23,662 INFO L480 AbstractCegarLoop]: Abstraction has has 487 places, 910 transitions, 41217 flow [2021-03-11 22:52:23,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:23,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:23,663 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:23,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 22:52:23,663 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:23,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1881526876, now seen corresponding path program 78 times [2021-03-11 22:52:23,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:23,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031760690] [2021-03-11 22:52:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:23,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:23,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:23,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:23,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:23,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:23,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:23,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:23,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:23,691 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:52:23,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:52:23,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:52:23,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:52:23,737 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:52:23,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:52:23,757 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:23,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:23,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031760690] [2021-03-11 22:52:23,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:23,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:23,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788834437] [2021-03-11 22:52:23,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:23,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:23,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:23,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:23,778 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:23,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 910 transitions, 41217 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:23,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:23,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:23,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:27,746 INFO L129 PetriNetUnfolder]: 473/8694 cut-off events. [2021-03-11 22:52:27,746 INFO L130 PetriNetUnfolder]: For 447967/454200 co-relation queries the response was YES. [2021-03-11 22:52:27,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72568 conditions, 8694 events. 473/8694 cut-off events. For 447967/454200 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 152577 event pairs, 457 based on Foata normal form. 64/8320 useless extension candidates. Maximal degree in co-relation 72390. Up to 1423 conditions per place. [2021-03-11 22:52:27,838 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 472 selfloop transitions, 446 changer transitions 2/934 dead transitions. [2021-03-11 22:52:27,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 934 transitions, 43833 flow [2021-03-11 22:52:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:27,839 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:27,839 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:27,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:27,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:27,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:27,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:27,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:27,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:27,840 INFO L185 Difference]: Start difference. First operand has 487 places, 910 transitions, 41217 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:27,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 934 transitions, 43833 flow [2021-03-11 22:52:32,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 934 transitions, 43013 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-11 22:52:32,096 INFO L241 Difference]: Finished difference. Result has 491 places, 912 transitions, 41432 flow [2021-03-11 22:52:32,096 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40407, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41432, PETRI_PLACES=491, PETRI_TRANSITIONS=912} [2021-03-11 22:52:32,096 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 447 predicate places. [2021-03-11 22:52:32,096 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 912 transitions, 41432 flow [2021-03-11 22:52:32,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:32,097 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:32,097 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:32,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 22:52:32,097 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:32,097 INFO L82 PathProgramCache]: Analyzing trace with hash 426789580, now seen corresponding path program 79 times [2021-03-11 22:52:32,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:32,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276356514] [2021-03-11 22:52:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:32,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:32,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:32,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:32,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:32,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:32,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:32,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:32,122 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:52:32,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:52:32,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:52:32,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:52:32,171 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:52:32,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:52:32,192 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:32,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:32,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276356514] [2021-03-11 22:52:32,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:32,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:32,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282463680] [2021-03-11 22:52:32,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:32,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:32,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:32,212 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:32,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 912 transitions, 41432 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:32,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:32,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:32,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:36,220 INFO L129 PetriNetUnfolder]: 473/8702 cut-off events. [2021-03-11 22:52:36,221 INFO L130 PetriNetUnfolder]: For 445916/453062 co-relation queries the response was YES. [2021-03-11 22:52:36,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72681 conditions, 8702 events. 473/8702 cut-off events. For 445916/453062 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 152715 event pairs, 349 based on Foata normal form. 64/8325 useless extension candidates. Maximal degree in co-relation 72502. Up to 1423 conditions per place. [2021-03-11 22:52:36,325 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 478 selfloop transitions, 439 changer transitions 1/932 dead transitions. [2021-03-11 22:52:36,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 932 transitions, 43834 flow [2021-03-11 22:52:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:36,326 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:36,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:36,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:36,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:36,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:36,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:36,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:36,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:36,327 INFO L185 Difference]: Start difference. First operand has 491 places, 912 transitions, 41432 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:36,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 932 transitions, 43834 flow [2021-03-11 22:52:40,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 932 transitions, 43112 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-11 22:52:40,781 INFO L241 Difference]: Finished difference. Result has 495 places, 915 transitions, 41785 flow [2021-03-11 22:52:40,782 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40720, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41785, PETRI_PLACES=495, PETRI_TRANSITIONS=915} [2021-03-11 22:52:40,782 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 451 predicate places. [2021-03-11 22:52:40,782 INFO L480 AbstractCegarLoop]: Abstraction has has 495 places, 915 transitions, 41785 flow [2021-03-11 22:52:40,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:40,782 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:40,782 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:40,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 22:52:40,783 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2101887472, now seen corresponding path program 80 times [2021-03-11 22:52:40,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:40,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995083183] [2021-03-11 22:52:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:40,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:40,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:40,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:40,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:40,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:40,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:40,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:40,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:40,810 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:52:40,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:52:40,830 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:52:40,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:52:40,857 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:52:40,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:52:40,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:40,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:40,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995083183] [2021-03-11 22:52:40,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:40,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:40,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495790216] [2021-03-11 22:52:40,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:40,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:40,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:40,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:40,903 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:40,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 915 transitions, 41785 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:40,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:40,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:40,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:44,974 INFO L129 PetriNetUnfolder]: 473/8696 cut-off events. [2021-03-11 22:52:44,974 INFO L130 PetriNetUnfolder]: For 450045/457167 co-relation queries the response was YES. [2021-03-11 22:52:45,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73041 conditions, 8696 events. 473/8696 cut-off events. For 450045/457167 co-relation queries the response was YES. Maximal size of possible extension queue 1364. Compared 152612 event pairs, 349 based on Foata normal form. 64/8320 useless extension candidates. Maximal degree in co-relation 72861. Up to 1423 conditions per place. [2021-03-11 22:52:45,069 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 475 selfloop transitions, 441 changer transitions 1/931 dead transitions. [2021-03-11 22:52:45,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 931 transitions, 44017 flow [2021-03-11 22:52:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:45,070 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:45,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:45,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:45,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:45,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:45,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:45,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:45,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:45,071 INFO L185 Difference]: Start difference. First operand has 495 places, 915 transitions, 41785 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:45,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 931 transitions, 44017 flow [2021-03-11 22:52:49,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 931 transitions, 43201 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-11 22:52:49,320 INFO L241 Difference]: Finished difference. Result has 498 places, 914 transitions, 41803 flow [2021-03-11 22:52:49,320 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40979, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41803, PETRI_PLACES=498, PETRI_TRANSITIONS=914} [2021-03-11 22:52:49,321 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 454 predicate places. [2021-03-11 22:52:49,321 INFO L480 AbstractCegarLoop]: Abstraction has has 498 places, 914 transitions, 41803 flow [2021-03-11 22:52:49,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:49,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:49,321 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:49,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 22:52:49,321 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:49,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:49,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1273956182, now seen corresponding path program 81 times [2021-03-11 22:52:49,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:49,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972855765] [2021-03-11 22:52:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:49,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:49,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:49,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:49,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:49,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:49,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:49,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:49,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:49,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:52:49,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:52:49,364 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:52:49,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:52:49,379 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:52:49,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:52:49,399 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:49,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972855765] [2021-03-11 22:52:49,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:49,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:49,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400049881] [2021-03-11 22:52:49,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:49,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:49,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:49,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:49,419 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:49,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 914 transitions, 41803 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:49,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:49,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:49,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:52:53,452 INFO L129 PetriNetUnfolder]: 473/8693 cut-off events. [2021-03-11 22:52:53,452 INFO L130 PetriNetUnfolder]: For 449753/456875 co-relation queries the response was YES. [2021-03-11 22:52:53,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73142 conditions, 8693 events. 473/8693 cut-off events. For 449753/456875 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 152407 event pairs, 349 based on Foata normal form. 64/8317 useless extension candidates. Maximal degree in co-relation 72962. Up to 1423 conditions per place. [2021-03-11 22:52:53,545 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 477 selfloop transitions, 438 changer transitions 1/930 dead transitions. [2021-03-11 22:52:53,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 930 transitions, 44033 flow [2021-03-11 22:52:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:52:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:52:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:52:53,546 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:52:53,546 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:52:53,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:52:53,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:52:53,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:52:53,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:53,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:53,547 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:53,547 INFO L185 Difference]: Start difference. First operand has 498 places, 914 transitions, 41803 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:52:53,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 930 transitions, 44033 flow [2021-03-11 22:52:57,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 930 transitions, 43145 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-11 22:52:57,835 INFO L241 Difference]: Finished difference. Result has 500 places, 913 transitions, 41744 flow [2021-03-11 22:52:57,836 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40925, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41744, PETRI_PLACES=500, PETRI_TRANSITIONS=913} [2021-03-11 22:52:57,836 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-03-11 22:52:57,836 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 913 transitions, 41744 flow [2021-03-11 22:52:57,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:57,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:52:57,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:52:57,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 22:52:57,836 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:52:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:52:57,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2084687116, now seen corresponding path program 82 times [2021-03-11 22:52:57,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:52:57,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244110385] [2021-03-11 22:52:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:52:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:52:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:52:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:52:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:52:57,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:52:57,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:52:57,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:52:57,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:52:57,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:52:57,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:52:57,873 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:52:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:52:57,901 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:52:57,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:52:57,921 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:52:57,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:52:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:52:57,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244110385] [2021-03-11 22:52:57,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:52:57,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:52:57,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891790903] [2021-03-11 22:52:57,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:52:57,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:52:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:52:57,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:52:57,941 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:52:57,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 913 transitions, 41744 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:52:57,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:52:57,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:52:57,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:01,942 INFO L129 PetriNetUnfolder]: 473/8686 cut-off events. [2021-03-11 22:53:01,942 INFO L130 PetriNetUnfolder]: For 449208/456330 co-relation queries the response was YES. [2021-03-11 22:53:02,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73113 conditions, 8686 events. 473/8686 cut-off events. For 449208/456330 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 152285 event pairs, 349 based on Foata normal form. 64/8310 useless extension candidates. Maximal degree in co-relation 72933. Up to 1423 conditions per place. [2021-03-11 22:53:02,042 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 480 selfloop transitions, 454 changer transitions 2/950 dead transitions. [2021-03-11 22:53:02,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 950 transitions, 45085 flow [2021-03-11 22:53:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:02,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:02,043 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:02,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:02,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:02,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:02,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:02,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:02,044 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:02,044 INFO L185 Difference]: Start difference. First operand has 500 places, 913 transitions, 41744 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:02,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 950 transitions, 45085 flow [2021-03-11 22:53:06,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 950 transitions, 44028 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-11 22:53:06,493 INFO L241 Difference]: Finished difference. Result has 505 places, 931 transitions, 42733 flow [2021-03-11 22:53:06,493 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40718, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42733, PETRI_PLACES=505, PETRI_TRANSITIONS=931} [2021-03-11 22:53:06,493 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 461 predicate places. [2021-03-11 22:53:06,494 INFO L480 AbstractCegarLoop]: Abstraction has has 505 places, 931 transitions, 42733 flow [2021-03-11 22:53:06,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:06,494 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:06,494 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:06,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 22:53:06,494 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:06,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1546831538, now seen corresponding path program 83 times [2021-03-11 22:53:06,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:06,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435376196] [2021-03-11 22:53:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:06,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:06,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:06,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:06,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:06,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:06,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:06,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:06,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:53:06,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:53:06,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:53:06,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:53:06,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:06,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:06,580 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:06,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:06,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435376196] [2021-03-11 22:53:06,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:06,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:06,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854603680] [2021-03-11 22:53:06,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:06,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:06,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:06,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:06,600 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:06,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 931 transitions, 42733 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:06,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:06,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:06,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:10,658 INFO L129 PetriNetUnfolder]: 473/8678 cut-off events. [2021-03-11 22:53:10,659 INFO L130 PetriNetUnfolder]: For 457849/464971 co-relation queries the response was YES. [2021-03-11 22:53:10,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73000 conditions, 8678 events. 473/8678 cut-off events. For 457849/464971 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 152213 event pairs, 349 based on Foata normal form. 64/8307 useless extension candidates. Maximal degree in co-relation 72816. Up to 1423 conditions per place. [2021-03-11 22:53:10,754 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 480 selfloop transitions, 453 changer transitions 1/948 dead transitions. [2021-03-11 22:53:10,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 948 transitions, 45143 flow [2021-03-11 22:53:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:10,756 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:10,756 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:10,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:10,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:10,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:10,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:10,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:10,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:10,757 INFO L185 Difference]: Start difference. First operand has 505 places, 931 transitions, 42733 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 948 transitions, 45143 flow [2021-03-11 22:53:15,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 948 transitions, 44167 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-03-11 22:53:15,184 INFO L241 Difference]: Finished difference. Result has 507 places, 933 transitions, 42812 flow [2021-03-11 22:53:15,185 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41767, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42812, PETRI_PLACES=507, PETRI_TRANSITIONS=933} [2021-03-11 22:53:15,185 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 463 predicate places. [2021-03-11 22:53:15,185 INFO L480 AbstractCegarLoop]: Abstraction has has 507 places, 933 transitions, 42812 flow [2021-03-11 22:53:15,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:15,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:15,185 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:15,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 22:53:15,185 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash 102701584, now seen corresponding path program 84 times [2021-03-11 22:53:15,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:15,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702294167] [2021-03-11 22:53:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:15,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:15,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:15,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:15,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:15,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:15,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:15,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:15,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:15,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:53:15,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:53:15,223 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:53:15,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:53:15,238 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:15,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:15,258 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:15,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:15,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702294167] [2021-03-11 22:53:15,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:15,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:15,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472208354] [2021-03-11 22:53:15,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:15,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:15,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:15,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:15,279 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:15,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 933 transitions, 42812 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:15,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:15,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:15,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:19,287 INFO L129 PetriNetUnfolder]: 473/8671 cut-off events. [2021-03-11 22:53:19,287 INFO L130 PetriNetUnfolder]: For 456591/463713 co-relation queries the response was YES. [2021-03-11 22:53:19,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72930 conditions, 8671 events. 473/8671 cut-off events. For 456591/463713 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 152019 event pairs, 349 based on Foata normal form. 64/8300 useless extension candidates. Maximal degree in co-relation 72747. Up to 1423 conditions per place. [2021-03-11 22:53:19,382 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 483 selfloop transitions, 449 changer transitions 1/947 dead transitions. [2021-03-11 22:53:19,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 947 transitions, 45052 flow [2021-03-11 22:53:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:19,384 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:19,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:19,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:19,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:19,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:19,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:19,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:19,385 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:19,385 INFO L185 Difference]: Start difference. First operand has 507 places, 933 transitions, 42812 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:19,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 947 transitions, 45052 flow [2021-03-11 22:53:23,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 947 transitions, 44150 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-11 22:53:23,875 INFO L241 Difference]: Finished difference. Result has 510 places, 935 transitions, 42983 flow [2021-03-11 22:53:23,875 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41920, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42983, PETRI_PLACES=510, PETRI_TRANSITIONS=935} [2021-03-11 22:53:23,875 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 466 predicate places. [2021-03-11 22:53:23,875 INFO L480 AbstractCegarLoop]: Abstraction has has 510 places, 935 transitions, 42983 flow [2021-03-11 22:53:23,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:23,875 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:23,875 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:23,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 22:53:23,876 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:23,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2021668492, now seen corresponding path program 85 times [2021-03-11 22:53:23,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:23,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235739645] [2021-03-11 22:53:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:23,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:23,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:23,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:23,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:23,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:23,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:23,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:23,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:23,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:53:23,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:53:23,914 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:53:23,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:53:23,930 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:23,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:23,951 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:23,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:23,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235739645] [2021-03-11 22:53:23,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:23,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:23,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958964343] [2021-03-11 22:53:23,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:23,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:23,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:23,972 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:23,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 935 transitions, 42983 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:23,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:23,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:23,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:28,042 INFO L129 PetriNetUnfolder]: 473/8664 cut-off events. [2021-03-11 22:53:28,042 INFO L130 PetriNetUnfolder]: For 458764/465881 co-relation queries the response was YES. [2021-03-11 22:53:28,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72950 conditions, 8664 events. 473/8664 cut-off events. For 458764/465881 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 151860 event pairs, 349 based on Foata normal form. 62/8291 useless extension candidates. Maximal degree in co-relation 72766. Up to 1423 conditions per place. [2021-03-11 22:53:28,140 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 484 selfloop transitions, 447 changer transitions 1/946 dead transitions. [2021-03-11 22:53:28,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 946 transitions, 45079 flow [2021-03-11 22:53:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:28,141 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:28,141 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:28,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:28,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:28,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:28,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:28,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:28,143 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:28,143 INFO L185 Difference]: Start difference. First operand has 510 places, 935 transitions, 42983 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:28,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 946 transitions, 45079 flow [2021-03-11 22:53:32,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 946 transitions, 44426 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 22:53:32,716 INFO L241 Difference]: Finished difference. Result has 515 places, 935 transitions, 43247 flow [2021-03-11 22:53:32,717 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42340, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43247, PETRI_PLACES=515, PETRI_TRANSITIONS=935} [2021-03-11 22:53:32,717 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 471 predicate places. [2021-03-11 22:53:32,717 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 935 transitions, 43247 flow [2021-03-11 22:53:32,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:32,717 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:32,717 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:32,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 22:53:32,718 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1515322226, now seen corresponding path program 86 times [2021-03-11 22:53:32,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:32,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29763424] [2021-03-11 22:53:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:32,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:32,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:32,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:32,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:32,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:32,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:32,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:32,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:32,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:53:32,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:53:32,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:53:32,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:53:32,776 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:32,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:32,801 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:32,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:32,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29763424] [2021-03-11 22:53:32,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:32,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:32,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195718871] [2021-03-11 22:53:32,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:32,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:32,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:32,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:32,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 935 transitions, 43247 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:32,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:32,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:32,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:36,910 INFO L129 PetriNetUnfolder]: 473/8642 cut-off events. [2021-03-11 22:53:36,910 INFO L130 PetriNetUnfolder]: For 462735/468939 co-relation queries the response was YES. [2021-03-11 22:53:37,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73355 conditions, 8642 events. 473/8642 cut-off events. For 462735/468939 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 151404 event pairs, 457 based on Foata normal form. 62/8272 useless extension candidates. Maximal degree in co-relation 73170. Up to 1423 conditions per place. [2021-03-11 22:53:37,027 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 485 selfloop transitions, 445 changer transitions 1/945 dead transitions. [2021-03-11 22:53:37,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 945 transitions, 45293 flow [2021-03-11 22:53:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:37,029 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:37,029 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:37,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:37,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:37,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:37,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:37,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:37,030 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:37,030 INFO L185 Difference]: Start difference. First operand has 515 places, 935 transitions, 43247 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:37,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 945 transitions, 45293 flow [2021-03-11 22:53:41,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 945 transitions, 44402 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 22:53:41,750 INFO L241 Difference]: Finished difference. Result has 518 places, 937 transitions, 43401 flow [2021-03-11 22:53:41,750 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42366, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43401, PETRI_PLACES=518, PETRI_TRANSITIONS=937} [2021-03-11 22:53:41,750 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 474 predicate places. [2021-03-11 22:53:41,751 INFO L480 AbstractCegarLoop]: Abstraction has has 518 places, 937 transitions, 43401 flow [2021-03-11 22:53:41,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:41,751 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:41,751 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:41,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 22:53:41,751 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1703933914, now seen corresponding path program 87 times [2021-03-11 22:53:41,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:41,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869886326] [2021-03-11 22:53:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:41,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:41,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:41,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:41,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:41,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:41,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:41,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:41,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:41,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:53:41,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:53:41,790 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:53:41,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:53:41,807 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:41,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:41,827 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:41,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:41,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869886326] [2021-03-11 22:53:41,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:41,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:41,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118816923] [2021-03-11 22:53:41,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:41,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:41,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:41,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:41,848 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:41,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 937 transitions, 43401 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:41,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:41,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:41,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:45,877 INFO L129 PetriNetUnfolder]: 473/8652 cut-off events. [2021-03-11 22:53:45,878 INFO L130 PetriNetUnfolder]: For 462734/469856 co-relation queries the response was YES. [2021-03-11 22:53:45,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73380 conditions, 8652 events. 473/8652 cut-off events. For 462734/469856 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 151726 event pairs, 349 based on Foata normal form. 64/8282 useless extension candidates. Maximal degree in co-relation 73194. Up to 1423 conditions per place. [2021-03-11 22:53:45,979 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 483 selfloop transitions, 445 changer transitions 2/944 dead transitions. [2021-03-11 22:53:45,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 944 transitions, 45315 flow [2021-03-11 22:53:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:45,980 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:45,981 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:45,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:45,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:45,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:45,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:45,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:45,982 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:45,982 INFO L185 Difference]: Start difference. First operand has 518 places, 937 transitions, 43401 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:45,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 944 transitions, 45315 flow [2021-03-11 22:53:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 944 transitions, 44490 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-11 22:53:50,686 INFO L241 Difference]: Finished difference. Result has 521 places, 935 transitions, 43351 flow [2021-03-11 22:53:50,686 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42586, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43351, PETRI_PLACES=521, PETRI_TRANSITIONS=935} [2021-03-11 22:53:50,687 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 477 predicate places. [2021-03-11 22:53:50,687 INFO L480 AbstractCegarLoop]: Abstraction has has 521 places, 935 transitions, 43351 flow [2021-03-11 22:53:50,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:50,687 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:50,687 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:50,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 22:53:50,687 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash -313250336, now seen corresponding path program 88 times [2021-03-11 22:53:50,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:50,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687377146] [2021-03-11 22:53:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:50,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:50,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:50,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:50,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:50,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:50,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:50,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:50,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:50,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:53:50,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:53:50,735 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:53:50,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:53:50,762 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:50,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:50,791 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:50,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:50,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687377146] [2021-03-11 22:53:50,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:50,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:50,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496616256] [2021-03-11 22:53:50,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:50,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:50,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:50,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:50,813 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:50,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 935 transitions, 43351 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:50,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:50,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:50,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:53:54,866 INFO L129 PetriNetUnfolder]: 473/8645 cut-off events. [2021-03-11 22:53:54,866 INFO L130 PetriNetUnfolder]: For 461907/469029 co-relation queries the response was YES. [2021-03-11 22:53:54,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73423 conditions, 8645 events. 473/8645 cut-off events. For 461907/469029 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 151442 event pairs, 349 based on Foata normal form. 64/8275 useless extension candidates. Maximal degree in co-relation 73237. Up to 1423 conditions per place. [2021-03-11 22:53:54,966 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 444 selfloop transitions, 482 changer transitions 2/942 dead transitions. [2021-03-11 22:53:54,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 942 transitions, 45261 flow [2021-03-11 22:53:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:53:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:53:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:53:54,967 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:53:54,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:53:54,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:53:54,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:53:54,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:53:54,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:54,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:54,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:54,968 INFO L185 Difference]: Start difference. First operand has 521 places, 935 transitions, 43351 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:53:54,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 942 transitions, 45261 flow [2021-03-11 22:53:59,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 942 transitions, 44365 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-11 22:53:59,588 INFO L241 Difference]: Finished difference. Result has 523 places, 933 transitions, 43297 flow [2021-03-11 22:53:59,588 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42465, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=482, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43297, PETRI_PLACES=523, PETRI_TRANSITIONS=933} [2021-03-11 22:53:59,588 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 479 predicate places. [2021-03-11 22:53:59,588 INFO L480 AbstractCegarLoop]: Abstraction has has 523 places, 933 transitions, 43297 flow [2021-03-11 22:53:59,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:59,589 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:53:59,589 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:53:59,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 22:53:59,589 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:53:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:53:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash -851105914, now seen corresponding path program 89 times [2021-03-11 22:53:59,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:53:59,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291753312] [2021-03-11 22:53:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:53:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:53:59,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:59,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:53:59,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:53:59,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:53:59,601 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:53:59,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:53:59,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:53:59,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:53:59,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:53:59,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:53:59,638 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:53:59,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:53:59,665 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:53:59,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:53:59,685 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:53:59,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:53:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:53:59,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291753312] [2021-03-11 22:53:59,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:53:59,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:53:59,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040548134] [2021-03-11 22:53:59,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:53:59,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:53:59,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:53:59,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:53:59,705 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:53:59,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 933 transitions, 43297 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:53:59,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:53:59,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:53:59,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:03,786 INFO L129 PetriNetUnfolder]: 473/8637 cut-off events. [2021-03-11 22:54:03,787 INFO L130 PetriNetUnfolder]: For 461202/468324 co-relation queries the response was YES. [2021-03-11 22:54:03,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73418 conditions, 8637 events. 473/8637 cut-off events. For 461202/468324 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 151244 event pairs, 349 based on Foata normal form. 64/8267 useless extension candidates. Maximal degree in co-relation 73232. Up to 1423 conditions per place. [2021-03-11 22:54:03,893 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 442 selfloop transitions, 483 changer transitions 1/940 dead transitions. [2021-03-11 22:54:03,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 940 transitions, 45203 flow [2021-03-11 22:54:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:03,894 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:03,894 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:03,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:03,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:03,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:03,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:03,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:03,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:03,896 INFO L185 Difference]: Start difference. First operand has 523 places, 933 transitions, 43297 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:03,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 940 transitions, 45203 flow [2021-03-11 22:54:08,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 940 transitions, 44429 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-11 22:54:08,629 INFO L241 Difference]: Finished difference. Result has 526 places, 932 transitions, 43428 flow [2021-03-11 22:54:08,629 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42533, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43428, PETRI_PLACES=526, PETRI_TRANSITIONS=932} [2021-03-11 22:54:08,629 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 482 predicate places. [2021-03-11 22:54:08,629 INFO L480 AbstractCegarLoop]: Abstraction has has 526 places, 932 transitions, 43428 flow [2021-03-11 22:54:08,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:08,630 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:54:08,630 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:54:08,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 22:54:08,630 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:54:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:54:08,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1008444006, now seen corresponding path program 90 times [2021-03-11 22:54:08,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:54:08,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526831272] [2021-03-11 22:54:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:54:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:54:08,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:08,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:54:08,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:08,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:54:08,641 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:54:08,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:54:08,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:54:08,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:54:08,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:54:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:54:08,677 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:54:08,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:54:08,697 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:54:08,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:54:08,718 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:54:08,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:54:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:54:08,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526831272] [2021-03-11 22:54:08,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:54:08,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:54:08,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913412315] [2021-03-11 22:54:08,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:54:08,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:54:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:54:08,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:54:08,738 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:54:08,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 932 transitions, 43428 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:08,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:54:08,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:54:08,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:12,719 INFO L129 PetriNetUnfolder]: 473/8630 cut-off events. [2021-03-11 22:54:12,719 INFO L130 PetriNetUnfolder]: For 458643/465765 co-relation queries the response was YES. [2021-03-11 22:54:12,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73843 conditions, 8630 events. 473/8630 cut-off events. For 458643/465765 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 151195 event pairs, 349 based on Foata normal form. 64/8260 useless extension candidates. Maximal degree in co-relation 73658. Up to 1423 conditions per place. [2021-03-11 22:54:12,820 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 441 selfloop transitions, 482 changer transitions 2/939 dead transitions. [2021-03-11 22:54:12,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 939 transitions, 45332 flow [2021-03-11 22:54:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:12,821 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:12,821 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:12,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:12,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:12,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:12,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:12,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:12,822 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:12,822 INFO L185 Difference]: Start difference. First operand has 526 places, 932 transitions, 43428 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:12,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 939 transitions, 45332 flow [2021-03-11 22:54:17,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 939 transitions, 44382 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:54:17,667 INFO L241 Difference]: Finished difference. Result has 528 places, 930 transitions, 43320 flow [2021-03-11 22:54:17,667 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42488, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=482, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43320, PETRI_PLACES=528, PETRI_TRANSITIONS=930} [2021-03-11 22:54:17,668 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 484 predicate places. [2021-03-11 22:54:17,668 INFO L480 AbstractCegarLoop]: Abstraction has has 528 places, 930 transitions, 43320 flow [2021-03-11 22:54:17,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:17,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:54:17,668 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:54:17,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 22:54:17,668 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:54:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:54:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 691693654, now seen corresponding path program 91 times [2021-03-11 22:54:17,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:54:17,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126456048] [2021-03-11 22:54:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:54:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:54:17,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:17,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:54:17,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:17,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:54:17,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:54:17,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:54:17,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:54:17,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:54:17,692 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:54:17,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:54:17,703 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:54:17,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:54:17,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:54:17,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:54:17,755 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:54:17,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:54:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:54:17,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126456048] [2021-03-11 22:54:17,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:54:17,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:54:17,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903809049] [2021-03-11 22:54:17,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:54:17,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:54:17,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:54:17,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:54:17,778 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:54:17,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 930 transitions, 43320 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:17,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:54:17,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:54:17,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:21,736 INFO L129 PetriNetUnfolder]: 473/8619 cut-off events. [2021-03-11 22:54:21,736 INFO L130 PetriNetUnfolder]: For 457278/464400 co-relation queries the response was YES. [2021-03-11 22:54:21,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73722 conditions, 8619 events. 473/8619 cut-off events. For 457278/464400 co-relation queries the response was YES. Maximal size of possible extension queue 1350. Compared 150810 event pairs, 349 based on Foata normal form. 64/8251 useless extension candidates. Maximal degree in co-relation 73537. Up to 1423 conditions per place. [2021-03-11 22:54:21,845 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 477 selfloop transitions, 445 changer transitions 1/937 dead transitions. [2021-03-11 22:54:21,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 937 transitions, 45220 flow [2021-03-11 22:54:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:21,846 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:21,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:21,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:21,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:21,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:21,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:21,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:21,847 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:21,847 INFO L185 Difference]: Start difference. First operand has 528 places, 930 transitions, 43320 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:21,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 937 transitions, 45220 flow [2021-03-11 22:54:26,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 937 transitions, 44249 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-03-11 22:54:26,800 INFO L241 Difference]: Finished difference. Result has 530 places, 929 transitions, 43177 flow [2021-03-11 22:54:26,801 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42359, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43177, PETRI_PLACES=530, PETRI_TRANSITIONS=929} [2021-03-11 22:54:26,801 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 486 predicate places. [2021-03-11 22:54:26,801 INFO L480 AbstractCegarLoop]: Abstraction has has 530 places, 929 transitions, 43177 flow [2021-03-11 22:54:26,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:26,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:54:26,801 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:54:26,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 22:54:26,801 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:54:26,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:54:26,801 INFO L82 PathProgramCache]: Analyzing trace with hash -946784816, now seen corresponding path program 92 times [2021-03-11 22:54:26,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:54:26,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126979103] [2021-03-11 22:54:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:54:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:54:26,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:26,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:54:26,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:26,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:54:26,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:54:26,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:54:26,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:54:26,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:54:26,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:54:26,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:54:26,840 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:54:26,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:54:26,857 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:54:26,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:54:26,878 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:54:26,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:54:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:54:26,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126979103] [2021-03-11 22:54:26,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:54:26,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:54:26,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292036638] [2021-03-11 22:54:26,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:54:26,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:54:26,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:54:26,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:54:26,898 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:54:26,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 929 transitions, 43177 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:26,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:54:26,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:54:26,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:30,839 INFO L129 PetriNetUnfolder]: 473/8597 cut-off events. [2021-03-11 22:54:30,840 INFO L130 PetriNetUnfolder]: For 456682/462886 co-relation queries the response was YES. [2021-03-11 22:54:30,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73513 conditions, 8597 events. 473/8597 cut-off events. For 456682/462886 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 150497 event pairs, 457 based on Foata normal form. 62/8225 useless extension candidates. Maximal degree in co-relation 73328. Up to 1423 conditions per place. [2021-03-11 22:54:30,963 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 462 selfloop transitions, 459 changer transitions 1/936 dead transitions. [2021-03-11 22:54:30,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 936 transitions, 45075 flow [2021-03-11 22:54:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:30,964 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:30,964 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:30,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:30,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:30,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:30,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:30,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:30,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:30,965 INFO L185 Difference]: Start difference. First operand has 530 places, 929 transitions, 43177 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:30,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 936 transitions, 45075 flow [2021-03-11 22:54:35,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 936 transitions, 44187 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-11 22:54:35,750 INFO L241 Difference]: Finished difference. Result has 531 places, 928 transitions, 43133 flow [2021-03-11 22:54:35,750 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42299, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43133, PETRI_PLACES=531, PETRI_TRANSITIONS=928} [2021-03-11 22:54:35,750 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 487 predicate places. [2021-03-11 22:54:35,750 INFO L480 AbstractCegarLoop]: Abstraction has has 531 places, 928 transitions, 43133 flow [2021-03-11 22:54:35,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:35,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:54:35,750 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:54:35,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 22:54:35,751 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:54:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:54:35,751 INFO L82 PathProgramCache]: Analyzing trace with hash 742139156, now seen corresponding path program 93 times [2021-03-11 22:54:35,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:54:35,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323840520] [2021-03-11 22:54:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:54:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:54:35,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:35,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:54:35,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:35,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:54:35,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:54:35,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:54:35,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:54:35,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:54:35,775 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:54:35,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:54:35,787 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 22:54:35,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 22:54:35,804 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:54:35,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:54:35,825 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:54:35,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:54:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:54:35,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323840520] [2021-03-11 22:54:35,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:54:35,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:54:35,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448169557] [2021-03-11 22:54:35,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:54:35,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:54:35,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:54:35,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:54:35,846 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:54:35,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 928 transitions, 43133 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:35,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:54:35,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:54:35,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:39,761 INFO L129 PetriNetUnfolder]: 473/8610 cut-off events. [2021-03-11 22:54:39,762 INFO L130 PetriNetUnfolder]: For 453818/460940 co-relation queries the response was YES. [2021-03-11 22:54:39,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73512 conditions, 8610 events. 473/8610 cut-off events. For 453818/460940 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 150665 event pairs, 349 based on Foata normal form. 64/8237 useless extension candidates. Maximal degree in co-relation 73328. Up to 1423 conditions per place. [2021-03-11 22:54:39,866 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 462 selfloop transitions, 458 changer transitions 1/935 dead transitions. [2021-03-11 22:54:39,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 935 transitions, 45029 flow [2021-03-11 22:54:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:39,867 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:39,867 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:39,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:39,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:39,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:39,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:39,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:39,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:39,868 INFO L185 Difference]: Start difference. First operand has 531 places, 928 transitions, 43133 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 935 transitions, 45029 flow [2021-03-11 22:54:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 935 transitions, 44193 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-11 22:54:44,747 INFO L241 Difference]: Finished difference. Result has 534 places, 927 transitions, 43139 flow [2021-03-11 22:54:44,747 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42307, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43139, PETRI_PLACES=534, PETRI_TRANSITIONS=927} [2021-03-11 22:54:44,747 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 490 predicate places. [2021-03-11 22:54:44,747 INFO L480 AbstractCegarLoop]: Abstraction has has 534 places, 927 transitions, 43139 flow [2021-03-11 22:54:44,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:44,747 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:54:44,748 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:54:44,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 22:54:44,748 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:54:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:54:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1859323800, now seen corresponding path program 94 times [2021-03-11 22:54:44,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:54:44,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948162954] [2021-03-11 22:54:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:54:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:54:44,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:44,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:54:44,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:44,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:54:44,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:54:44,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:54:44,765 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:54:44,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:54:44,773 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:54:44,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:54:44,792 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:54:44,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:54:44,821 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:54:44,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:54:44,844 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:54:44,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:54:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:54:44,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948162954] [2021-03-11 22:54:44,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:54:44,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:54:44,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462267715] [2021-03-11 22:54:44,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:54:44,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:54:44,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:54:44,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:54:44,865 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:54:44,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 927 transitions, 43139 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:44,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:54:44,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:54:44,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:48,757 INFO L129 PetriNetUnfolder]: 473/8606 cut-off events. [2021-03-11 22:54:48,757 INFO L130 PetriNetUnfolder]: For 453187/460309 co-relation queries the response was YES. [2021-03-11 22:54:48,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73585 conditions, 8606 events. 473/8606 cut-off events. For 453187/460309 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 150595 event pairs, 349 based on Foata normal form. 64/8234 useless extension candidates. Maximal degree in co-relation 73401. Up to 1488 conditions per place. [2021-03-11 22:54:48,863 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 539 selfloop transitions, 416 changer transitions 1/970 dead transitions. [2021-03-11 22:54:48,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 970 transitions, 46815 flow [2021-03-11 22:54:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:48,865 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:48,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:48,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:48,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:48,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:48,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:48,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:48,866 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:48,866 INFO L185 Difference]: Start difference. First operand has 534 places, 927 transitions, 43139 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 970 transitions, 46815 flow [2021-03-11 22:54:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 970 transitions, 45986 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:54:53,952 INFO L241 Difference]: Finished difference. Result has 538 places, 941 transitions, 44011 flow [2021-03-11 22:54:53,955 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=42335, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44011, PETRI_PLACES=538, PETRI_TRANSITIONS=941} [2021-03-11 22:54:53,955 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 494 predicate places. [2021-03-11 22:54:53,955 INFO L480 AbstractCegarLoop]: Abstraction has has 538 places, 941 transitions, 44011 flow [2021-03-11 22:54:53,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:53,955 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:54:53,955 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:54:53,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 22:54:53,955 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:54:53,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:54:53,955 INFO L82 PathProgramCache]: Analyzing trace with hash -93033556, now seen corresponding path program 95 times [2021-03-11 22:54:53,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:54:53,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518537479] [2021-03-11 22:54:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:54:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:54:53,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:53,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:54:53,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:54:53,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:54:53,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:54:53,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:54:53,973 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:54:53,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:54:53,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:54:53,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:54:54,002 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:54:54,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:54:54,033 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:54:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:54:54,057 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:54:54,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:54:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:54:54,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518537479] [2021-03-11 22:54:54,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:54:54,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:54:54,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016969003] [2021-03-11 22:54:54,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:54:54,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:54:54,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:54:54,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:54:54,080 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:54:54,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 941 transitions, 44011 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:54,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:54:54,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:54:54,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:54:58,012 INFO L129 PetriNetUnfolder]: 473/8600 cut-off events. [2021-03-11 22:54:58,012 INFO L130 PetriNetUnfolder]: For 456565/463695 co-relation queries the response was YES. [2021-03-11 22:54:58,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73706 conditions, 8600 events. 473/8600 cut-off events. For 456565/463695 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 150454 event pairs, 349 based on Foata normal form. 64/8229 useless extension candidates. Maximal degree in co-relation 73521. Up to 1488 conditions per place. [2021-03-11 22:54:58,114 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 537 selfloop transitions, 417 changer transitions 1/969 dead transitions. [2021-03-11 22:54:58,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 969 transitions, 46861 flow [2021-03-11 22:54:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:54:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:54:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:54:58,116 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:54:58,116 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:54:58,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:54:58,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:54:58,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:54:58,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:58,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:58,117 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:54:58,117 INFO L185 Difference]: Start difference. First operand has 538 places, 941 transitions, 44011 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:54:58,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 969 transitions, 46861 flow [2021-03-11 22:55:03,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 969 transitions, 46207 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-03-11 22:55:03,191 INFO L241 Difference]: Finished difference. Result has 542 places, 940 transitions, 44131 flow [2021-03-11 22:55:03,191 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43367, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44131, PETRI_PLACES=542, PETRI_TRANSITIONS=940} [2021-03-11 22:55:03,191 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 498 predicate places. [2021-03-11 22:55:03,192 INFO L480 AbstractCegarLoop]: Abstraction has has 542 places, 940 transitions, 44131 flow [2021-03-11 22:55:03,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:03,192 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:03,192 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:03,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 22:55:03,192 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1366427188, now seen corresponding path program 96 times [2021-03-11 22:55:03,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:03,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886075316] [2021-03-11 22:55:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:03,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:03,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:03,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:03,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:03,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:03,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:03,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:03,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:03,233 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:55:03,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:55:03,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:55:03,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:55:03,284 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:55:03,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:55:03,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:03,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:03,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886075316] [2021-03-11 22:55:03,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:03,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:03,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305465185] [2021-03-11 22:55:03,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:03,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:03,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:03,327 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:03,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 940 transitions, 44131 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:03,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:03,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:03,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:55:07,347 INFO L129 PetriNetUnfolder]: 473/8597 cut-off events. [2021-03-11 22:55:07,347 INFO L130 PetriNetUnfolder]: For 457034/464170 co-relation queries the response was YES. [2021-03-11 22:55:07,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74080 conditions, 8597 events. 473/8597 cut-off events. For 457034/464170 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 150415 event pairs, 349 based on Foata normal form. 64/8231 useless extension candidates. Maximal degree in co-relation 73895. Up to 1488 conditions per place. [2021-03-11 22:55:07,457 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 532 selfloop transitions, 420 changer transitions 2/968 dead transitions. [2021-03-11 22:55:07,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 968 transitions, 46979 flow [2021-03-11 22:55:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:55:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:55:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:55:07,458 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:55:07,458 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:55:07,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:55:07,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:55:07,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:55:07,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:07,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:07,459 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:07,459 INFO L185 Difference]: Start difference. First operand has 542 places, 940 transitions, 44131 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:55:07,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 968 transitions, 46979 flow [2021-03-11 22:55:12,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 968 transitions, 46145 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-11 22:55:12,700 INFO L241 Difference]: Finished difference. Result has 544 places, 938 transitions, 44018 flow [2021-03-11 22:55:12,700 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43307, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44018, PETRI_PLACES=544, PETRI_TRANSITIONS=938} [2021-03-11 22:55:12,700 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 500 predicate places. [2021-03-11 22:55:12,701 INFO L480 AbstractCegarLoop]: Abstraction has has 544 places, 938 transitions, 44018 flow [2021-03-11 22:55:12,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:12,701 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:12,701 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:12,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 22:55:12,701 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:12,701 INFO L82 PathProgramCache]: Analyzing trace with hash -697733472, now seen corresponding path program 97 times [2021-03-11 22:55:12,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:12,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086257661] [2021-03-11 22:55:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:12,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:12,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:12,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:12,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:12,713 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:12,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:12,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:12,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:12,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:55:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:55:12,752 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:55:12,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:55:12,777 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:55:12,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:55:12,808 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:12,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:12,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086257661] [2021-03-11 22:55:12,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:12,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:12,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972814622] [2021-03-11 22:55:12,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:12,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:12,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:12,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:12,833 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:12,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 938 transitions, 44018 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:12,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:12,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:12,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:55:16,910 INFO L129 PetriNetUnfolder]: 473/8589 cut-off events. [2021-03-11 22:55:16,910 INFO L130 PetriNetUnfolder]: For 456113/463238 co-relation queries the response was YES. [2021-03-11 22:55:16,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74032 conditions, 8589 events. 473/8589 cut-off events. For 456113/463238 co-relation queries the response was YES. Maximal size of possible extension queue 1345. Compared 150317 event pairs, 349 based on Foata normal form. 62/8221 useless extension candidates. Maximal degree in co-relation 73847. Up to 1488 conditions per place. [2021-03-11 22:55:17,013 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 439 changer transitions 1/966 dead transitions. [2021-03-11 22:55:17,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 966 transitions, 46862 flow [2021-03-11 22:55:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:55:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:55:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:55:17,014 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:55:17,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:55:17,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:55:17,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:55:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:55:17,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:17,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:17,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:17,015 INFO L185 Difference]: Start difference. First operand has 544 places, 938 transitions, 44018 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:55:17,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 966 transitions, 46862 flow [2021-03-11 22:55:22,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 966 transitions, 46017 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-03-11 22:55:22,226 INFO L241 Difference]: Finished difference. Result has 546 places, 937 transitions, 43997 flow [2021-03-11 22:55:22,227 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43183, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43997, PETRI_PLACES=546, PETRI_TRANSITIONS=937} [2021-03-11 22:55:22,227 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 502 predicate places. [2021-03-11 22:55:22,227 INFO L480 AbstractCegarLoop]: Abstraction has has 546 places, 937 transitions, 43997 flow [2021-03-11 22:55:22,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:22,227 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:22,227 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:22,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 22:55:22,227 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:22,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:22,227 INFO L82 PathProgramCache]: Analyzing trace with hash -344679550, now seen corresponding path program 98 times [2021-03-11 22:55:22,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:22,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179477365] [2021-03-11 22:55:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:22,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:22,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:22,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:22,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:22,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:22,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:22,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:22,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:22,262 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:55:22,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:55:22,284 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:55:22,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:55:22,314 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:55:22,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:55:22,340 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:22,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:22,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179477365] [2021-03-11 22:55:22,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:22,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:22,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267247105] [2021-03-11 22:55:22,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:22,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:22,363 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:22,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 937 transitions, 43997 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:22,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:22,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:22,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:55:26,382 INFO L129 PetriNetUnfolder]: 473/8582 cut-off events. [2021-03-11 22:55:26,382 INFO L130 PetriNetUnfolder]: For 453093/460222 co-relation queries the response was YES. [2021-03-11 22:55:26,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74109 conditions, 8582 events. 473/8582 cut-off events. For 453093/460222 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 150077 event pairs, 349 based on Foata normal form. 62/8209 useless extension candidates. Maximal degree in co-relation 73925. Up to 1488 conditions per place. [2021-03-11 22:55:26,489 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 530 selfloop transitions, 419 changer transitions 2/965 dead transitions. [2021-03-11 22:55:26,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 965 transitions, 46839 flow [2021-03-11 22:55:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:55:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:55:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:55:26,490 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:55:26,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:55:26,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:55:26,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:55:26,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:55:26,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:26,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:26,491 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:26,491 INFO L185 Difference]: Start difference. First operand has 546 places, 937 transitions, 43997 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:55:26,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 965 transitions, 46839 flow [2021-03-11 22:55:31,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 965 transitions, 46045 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-11 22:55:31,623 INFO L241 Difference]: Finished difference. Result has 549 places, 935 transitions, 43931 flow [2021-03-11 22:55:31,624 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43213, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43931, PETRI_PLACES=549, PETRI_TRANSITIONS=935} [2021-03-11 22:55:31,624 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 505 predicate places. [2021-03-11 22:55:31,624 INFO L480 AbstractCegarLoop]: Abstraction has has 549 places, 935 transitions, 43931 flow [2021-03-11 22:55:31,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:31,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:31,624 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:31,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 22:55:31,625 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash 197042156, now seen corresponding path program 99 times [2021-03-11 22:55:31,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:31,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435497491] [2021-03-11 22:55:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:31,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:31,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:31,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:31,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:31,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:31,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:31,641 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:31,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:31,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:55:31,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:55:31,668 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:55:31,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:55:31,686 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:55:31,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:55:31,711 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:31,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:31,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435497491] [2021-03-11 22:55:31,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:31,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:31,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763436984] [2021-03-11 22:55:31,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:31,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:31,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:31,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:31,734 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:31,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 935 transitions, 43931 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:31,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:31,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:31,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:55:35,699 INFO L129 PetriNetUnfolder]: 473/8574 cut-off events. [2021-03-11 22:55:35,699 INFO L130 PetriNetUnfolder]: For 452200/459330 co-relation queries the response was YES. [2021-03-11 22:55:35,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74161 conditions, 8574 events. 473/8574 cut-off events. For 452200/459330 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 149944 event pairs, 349 based on Foata normal form. 64/8203 useless extension candidates. Maximal degree in co-relation 73977. Up to 1488 conditions per place. [2021-03-11 22:55:35,800 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 537 selfloop transitions, 411 changer transitions 1/963 dead transitions. [2021-03-11 22:55:35,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 963 transitions, 46769 flow [2021-03-11 22:55:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:55:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:55:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:55:35,801 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:55:35,801 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:55:35,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:55:35,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:55:35,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:55:35,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:35,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:35,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:35,802 INFO L185 Difference]: Start difference. First operand has 549 places, 935 transitions, 43931 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:55:35,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 963 transitions, 46769 flow [2021-03-11 22:55:40,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 963 transitions, 46021 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:55:40,774 INFO L241 Difference]: Finished difference. Result has 552 places, 934 transitions, 43949 flow [2021-03-11 22:55:40,774 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43193, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43949, PETRI_PLACES=552, PETRI_TRANSITIONS=934} [2021-03-11 22:55:40,775 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 508 predicate places. [2021-03-11 22:55:40,775 INFO L480 AbstractCegarLoop]: Abstraction has has 552 places, 934 transitions, 43949 flow [2021-03-11 22:55:40,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:40,775 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:40,775 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:40,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 22:55:40,775 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:40,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1410514796, now seen corresponding path program 100 times [2021-03-11 22:55:40,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:40,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057677472] [2021-03-11 22:55:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:40,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:40,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:40,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:40,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:40,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:40,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:40,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:40,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:40,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:55:40,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:55:40,819 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:55:40,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:55:40,835 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:55:40,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:55:40,861 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:40,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:40,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057677472] [2021-03-11 22:55:40,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:40,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:40,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113676712] [2021-03-11 22:55:40,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:40,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:40,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:40,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:40,884 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:40,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 934 transitions, 43949 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:40,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:40,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:40,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:55:44,867 INFO L129 PetriNetUnfolder]: 473/8568 cut-off events. [2021-03-11 22:55:44,868 INFO L130 PetriNetUnfolder]: For 452034/459164 co-relation queries the response was YES. [2021-03-11 22:55:44,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74258 conditions, 8568 events. 473/8568 cut-off events. For 452034/459164 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 149659 event pairs, 349 based on Foata normal form. 64/8197 useless extension candidates. Maximal degree in co-relation 74074. Up to 1488 conditions per place. [2021-03-11 22:55:44,968 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 503 selfloop transitions, 443 changer transitions 2/962 dead transitions. [2021-03-11 22:55:44,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 962 transitions, 46785 flow [2021-03-11 22:55:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:55:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:55:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:55:44,969 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:55:44,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:55:44,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:55:44,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:55:44,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:55:44,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:44,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:44,970 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:44,970 INFO L185 Difference]: Start difference. First operand has 552 places, 934 transitions, 43949 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:55:44,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 962 transitions, 46785 flow [2021-03-11 22:55:49,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 962 transitions, 45969 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:55:49,981 INFO L241 Difference]: Finished difference. Result has 555 places, 944 transitions, 44555 flow [2021-03-11 22:55:49,981 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43143, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=934, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=431, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44555, PETRI_PLACES=555, PETRI_TRANSITIONS=944} [2021-03-11 22:55:49,981 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-03-11 22:55:49,981 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 944 transitions, 44555 flow [2021-03-11 22:55:49,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:49,981 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:49,981 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:49,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 22:55:49,981 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1344196242, now seen corresponding path program 101 times [2021-03-11 22:55:49,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:49,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866739726] [2021-03-11 22:55:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:49,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:49,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:49,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:49,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:49,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:49,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:49,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:49,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:50,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:55:50,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:55:50,019 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:55:50,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:55:50,044 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:55:50,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:55:50,064 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:50,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:50,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866739726] [2021-03-11 22:55:50,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:50,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:50,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978333214] [2021-03-11 22:55:50,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:50,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:50,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:50,088 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:50,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 944 transitions, 44555 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:50,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:50,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:50,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:55:54,154 INFO L129 PetriNetUnfolder]: 473/8562 cut-off events. [2021-03-11 22:55:54,154 INFO L130 PetriNetUnfolder]: For 454420/461558 co-relation queries the response was YES. [2021-03-11 22:55:54,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74288 conditions, 8562 events. 473/8562 cut-off events. For 454420/461558 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 149650 event pairs, 349 based on Foata normal form. 64/8192 useless extension candidates. Maximal degree in co-relation 74103. Up to 1488 conditions per place. [2021-03-11 22:55:54,266 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 504 selfloop transitions, 440 changer transitions 2/960 dead transitions. [2021-03-11 22:55:54,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 960 transitions, 46837 flow [2021-03-11 22:55:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:55:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:55:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:55:54,267 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:55:54,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:55:54,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:55:54,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:55:54,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:55:54,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:54,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:54,268 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:54,268 INFO L185 Difference]: Start difference. First operand has 555 places, 944 transitions, 44555 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:55:54,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 960 transitions, 46837 flow [2021-03-11 22:55:59,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 960 transitions, 46193 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-03-11 22:55:59,146 INFO L241 Difference]: Finished difference. Result has 559 places, 942 transitions, 44665 flow [2021-03-11 22:55:59,147 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43921, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44665, PETRI_PLACES=559, PETRI_TRANSITIONS=942} [2021-03-11 22:55:59,147 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 515 predicate places. [2021-03-11 22:55:59,147 INFO L480 AbstractCegarLoop]: Abstraction has has 559 places, 942 transitions, 44665 flow [2021-03-11 22:55:59,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:59,147 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:55:59,147 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:55:59,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 22:55:59,147 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:55:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:55:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1711093612, now seen corresponding path program 102 times [2021-03-11 22:55:59,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:55:59,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914945423] [2021-03-11 22:55:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:55:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:55:59,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:59,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:55:59,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:55:59,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:55:59,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:55:59,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:55:59,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:55:59,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:55:59,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:55:59,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:55:59,185 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:55:59,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:55:59,200 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:55:59,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:55:59,220 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:55:59,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:55:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:55:59,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914945423] [2021-03-11 22:55:59,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:55:59,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:55:59,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307029050] [2021-03-11 22:55:59,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:55:59,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:55:59,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:55:59,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:55:59,240 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:55:59,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 942 transitions, 44665 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:55:59,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:55:59,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:55:59,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:03,218 INFO L129 PetriNetUnfolder]: 473/8554 cut-off events. [2021-03-11 22:56:03,218 INFO L130 PetriNetUnfolder]: For 455010/462140 co-relation queries the response was YES. [2021-03-11 22:56:03,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74666 conditions, 8554 events. 473/8554 cut-off events. For 455010/462140 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 149528 event pairs, 349 based on Foata normal form. 64/8189 useless extension candidates. Maximal degree in co-relation 74481. Up to 1488 conditions per place. [2021-03-11 22:56:03,319 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 509 selfloop transitions, 433 changer transitions 2/958 dead transitions. [2021-03-11 22:56:03,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 958 transitions, 46943 flow [2021-03-11 22:56:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:03,320 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:03,320 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:03,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:03,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:03,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:03,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:03,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:03,321 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:03,321 INFO L185 Difference]: Start difference. First operand has 559 places, 942 transitions, 44665 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:03,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 958 transitions, 46943 flow [2021-03-11 22:56:08,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 958 transitions, 46174 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:56:08,157 INFO L241 Difference]: Finished difference. Result has 562 places, 940 transitions, 44645 flow [2021-03-11 22:56:08,158 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43906, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44645, PETRI_PLACES=562, PETRI_TRANSITIONS=940} [2021-03-11 22:56:08,158 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 518 predicate places. [2021-03-11 22:56:08,158 INFO L480 AbstractCegarLoop]: Abstraction has has 562 places, 940 transitions, 44645 flow [2021-03-11 22:56:08,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:08,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:56:08,158 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:56:08,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 22:56:08,158 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:56:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:56:08,159 INFO L82 PathProgramCache]: Analyzing trace with hash -345272344, now seen corresponding path program 103 times [2021-03-11 22:56:08,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:56:08,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755886758] [2021-03-11 22:56:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:56:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:56:08,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:08,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:56:08,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:08,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:56:08,176 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:56:08,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:56:08,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:56:08,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:56:08,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:56:08,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:56:08,201 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:56:08,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:56:08,218 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:56:08,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:56:08,242 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:56:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:56:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:56:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755886758] [2021-03-11 22:56:08,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:56:08,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:56:08,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474763516] [2021-03-11 22:56:08,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:56:08,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:56:08,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:56:08,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:56:08,265 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:56:08,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 940 transitions, 44645 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:08,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:56:08,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:56:08,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:12,218 INFO L129 PetriNetUnfolder]: 473/8530 cut-off events. [2021-03-11 22:56:12,218 INFO L130 PetriNetUnfolder]: For 456932/463150 co-relation queries the response was YES. [2021-03-11 22:56:12,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74746 conditions, 8530 events. 473/8530 cut-off events. For 456932/463150 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 148999 event pairs, 457 based on Foata normal form. 62/8166 useless extension candidates. Maximal degree in co-relation 74561. Up to 1488 conditions per place. [2021-03-11 22:56:12,321 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 505 selfloop transitions, 435 changer transitions 2/956 dead transitions. [2021-03-11 22:56:12,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 956 transitions, 46919 flow [2021-03-11 22:56:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:12,322 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:12,322 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:12,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:12,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:12,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:12,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:12,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:12,324 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:12,324 INFO L185 Difference]: Start difference. First operand has 562 places, 940 transitions, 44645 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:12,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 956 transitions, 46919 flow [2021-03-11 22:56:17,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 956 transitions, 46061 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:56:17,144 INFO L241 Difference]: Finished difference. Result has 564 places, 938 transitions, 44543 flow [2021-03-11 22:56:17,145 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43797, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44543, PETRI_PLACES=564, PETRI_TRANSITIONS=938} [2021-03-11 22:56:17,145 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 520 predicate places. [2021-03-11 22:56:17,145 INFO L480 AbstractCegarLoop]: Abstraction has has 564 places, 938 transitions, 44543 flow [2021-03-11 22:56:17,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:17,145 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:56:17,145 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:56:17,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 22:56:17,145 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:56:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:56:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1324597314, now seen corresponding path program 104 times [2021-03-11 22:56:17,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:56:17,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699755811] [2021-03-11 22:56:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:56:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:56:17,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:17,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:56:17,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:17,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:56:17,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:56:17,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:56:17,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:56:17,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:56:17,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:56:17,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:56:17,193 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:56:17,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:56:17,209 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:56:17,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:56:17,229 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:56:17,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:56:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:56:17,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699755811] [2021-03-11 22:56:17,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:56:17,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:56:17,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219219713] [2021-03-11 22:56:17,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:56:17,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:56:17,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:56:17,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:56:17,250 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:56:17,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 938 transitions, 44543 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:17,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:56:17,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:56:17,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:21,147 INFO L129 PetriNetUnfolder]: 473/8537 cut-off events. [2021-03-11 22:56:21,147 INFO L130 PetriNetUnfolder]: For 453544/460674 co-relation queries the response was YES. [2021-03-11 22:56:21,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74680 conditions, 8537 events. 473/8537 cut-off events. For 453544/460674 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 149108 event pairs, 349 based on Foata normal form. 64/8168 useless extension candidates. Maximal degree in co-relation 74495. Up to 1488 conditions per place. [2021-03-11 22:56:21,249 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 543 selfloop transitions, 405 changer transitions 2/964 dead transitions. [2021-03-11 22:56:21,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 964 transitions, 47302 flow [2021-03-11 22:56:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:21,250 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:21,250 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:21,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:21,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:21,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:21,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:21,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:21,251 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:21,251 INFO L185 Difference]: Start difference. First operand has 564 places, 938 transitions, 44543 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:21,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 964 transitions, 47302 flow [2021-03-11 22:56:25,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 964 transitions, 46435 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:56:26,001 INFO L241 Difference]: Finished difference. Result has 567 places, 944 transitions, 44822 flow [2021-03-11 22:56:26,002 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43690, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44822, PETRI_PLACES=567, PETRI_TRANSITIONS=944} [2021-03-11 22:56:26,002 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 523 predicate places. [2021-03-11 22:56:26,002 INFO L480 AbstractCegarLoop]: Abstraction has has 567 places, 944 transitions, 44822 flow [2021-03-11 22:56:26,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:26,002 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:56:26,002 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:56:26,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 22:56:26,002 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:56:26,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:56:26,002 INFO L82 PathProgramCache]: Analyzing trace with hash -286343644, now seen corresponding path program 105 times [2021-03-11 22:56:26,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:56:26,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023965434] [2021-03-11 22:56:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:56:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:56:26,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:26,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:56:26,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:26,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:56:26,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:56:26,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:56:26,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:56:26,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:56:26,032 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:56:26,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:56:26,044 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:56:26,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:56:26,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:56:26,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:56:26,081 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:56:26,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:56:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:56:26,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023965434] [2021-03-11 22:56:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:56:26,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:56:26,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389727843] [2021-03-11 22:56:26,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:56:26,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:56:26,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:56:26,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:56:26,102 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:56:26,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 944 transitions, 44822 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:26,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:56:26,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:56:26,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:30,049 INFO L129 PetriNetUnfolder]: 473/8530 cut-off events. [2021-03-11 22:56:30,049 INFO L130 PetriNetUnfolder]: For 455652/462786 co-relation queries the response was YES. [2021-03-11 22:56:30,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74638 conditions, 8530 events. 473/8530 cut-off events. For 455652/462786 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 148945 event pairs, 349 based on Foata normal form. 64/8162 useless extension candidates. Maximal degree in co-relation 74452. Up to 1488 conditions per place. [2021-03-11 22:56:30,151 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 544 selfloop transitions, 403 changer transitions 1/962 dead transitions. [2021-03-11 22:56:30,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 962 transitions, 47208 flow [2021-03-11 22:56:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:30,152 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:30,152 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:30,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:30,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:30,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:30,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:30,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:30,153 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:30,153 INFO L185 Difference]: Start difference. First operand has 567 places, 944 transitions, 44822 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:30,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 962 transitions, 47208 flow [2021-03-11 22:56:35,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 962 transitions, 46453 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-11 22:56:35,035 INFO L241 Difference]: Finished difference. Result has 571 places, 944 transitions, 44893 flow [2021-03-11 22:56:35,035 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44077, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44893, PETRI_PLACES=571, PETRI_TRANSITIONS=944} [2021-03-11 22:56:35,035 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 527 predicate places. [2021-03-11 22:56:35,035 INFO L480 AbstractCegarLoop]: Abstraction has has 571 places, 944 transitions, 44893 flow [2021-03-11 22:56:35,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:35,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:56:35,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:56:35,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 22:56:35,036 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:56:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:56:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1076494372, now seen corresponding path program 106 times [2021-03-11 22:56:35,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:56:35,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419302943] [2021-03-11 22:56:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:56:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:56:35,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:35,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:56:35,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:35,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:56:35,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:56:35,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:56:35,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:56:35,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:56:35,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:56:35,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:56:35,080 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:56:35,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:56:35,096 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:56:35,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:56:35,126 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:56:35,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:56:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:56:35,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419302943] [2021-03-11 22:56:35,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:56:35,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:56:35,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452208475] [2021-03-11 22:56:35,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:56:35,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:56:35,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:56:35,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:56:35,146 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:56:35,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 944 transitions, 44893 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:35,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:56:35,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:56:35,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:39,116 INFO L129 PetriNetUnfolder]: 473/8524 cut-off events. [2021-03-11 22:56:39,116 INFO L130 PetriNetUnfolder]: For 455794/462932 co-relation queries the response was YES. [2021-03-11 22:56:39,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74718 conditions, 8524 events. 473/8524 cut-off events. For 455794/462932 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 148815 event pairs, 349 based on Foata normal form. 64/8156 useless extension candidates. Maximal degree in co-relation 74531. Up to 1488 conditions per place. [2021-03-11 22:56:39,227 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 547 selfloop transitions, 399 changer transitions 1/961 dead transitions. [2021-03-11 22:56:39,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 961 transitions, 47225 flow [2021-03-11 22:56:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:39,228 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:39,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:39,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:39,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:39,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:39,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:39,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:39,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:39,229 INFO L185 Difference]: Start difference. First operand has 571 places, 944 transitions, 44893 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:39,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 961 transitions, 47225 flow [2021-03-11 22:56:44,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 961 transitions, 46425 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:56:44,273 INFO L241 Difference]: Finished difference. Result has 574 places, 944 transitions, 44938 flow [2021-03-11 22:56:44,274 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44103, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44938, PETRI_PLACES=574, PETRI_TRANSITIONS=944} [2021-03-11 22:56:44,274 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 530 predicate places. [2021-03-11 22:56:44,274 INFO L480 AbstractCegarLoop]: Abstraction has has 574 places, 944 transitions, 44938 flow [2021-03-11 22:56:44,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:44,274 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:56:44,274 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:56:44,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 22:56:44,274 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:56:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:56:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1345603522, now seen corresponding path program 107 times [2021-03-11 22:56:44,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:56:44,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104082651] [2021-03-11 22:56:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:56:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:56:44,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:44,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:56:44,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:44,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:56:44,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:56:44,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:56:44,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:56:44,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:56:44,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:56:44,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:56:44,323 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:56:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:56:44,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:56:44,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:56:44,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:56:44,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:56:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:56:44,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104082651] [2021-03-11 22:56:44,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:56:44,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:56:44,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645711395] [2021-03-11 22:56:44,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:56:44,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:56:44,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:56:44,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:56:44,379 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:56:44,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 944 transitions, 44938 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:44,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:56:44,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:56:44,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:48,337 INFO L129 PetriNetUnfolder]: 473/8518 cut-off events. [2021-03-11 22:56:48,337 INFO L130 PetriNetUnfolder]: For 458104/465234 co-relation queries the response was YES. [2021-03-11 22:56:48,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74734 conditions, 8518 events. 473/8518 cut-off events. For 458104/465234 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 148653 event pairs, 349 based on Foata normal form. 64/8150 useless extension candidates. Maximal degree in co-relation 74546. Up to 1488 conditions per place. [2021-03-11 22:56:48,439 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 546 selfloop transitions, 399 changer transitions 1/960 dead transitions. [2021-03-11 22:56:48,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 960 transitions, 47226 flow [2021-03-11 22:56:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:48,440 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:48,440 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:48,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:48,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:48,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:48,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:48,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:48,441 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:48,441 INFO L185 Difference]: Start difference. First operand has 574 places, 944 transitions, 44938 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:48,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 960 transitions, 47226 flow [2021-03-11 22:56:53,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 960 transitions, 46485 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:56:53,429 INFO L241 Difference]: Finished difference. Result has 577 places, 943 transitions, 44935 flow [2021-03-11 22:56:53,429 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44207, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44935, PETRI_PLACES=577, PETRI_TRANSITIONS=943} [2021-03-11 22:56:53,429 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 533 predicate places. [2021-03-11 22:56:53,429 INFO L480 AbstractCegarLoop]: Abstraction has has 577 places, 943 transitions, 44935 flow [2021-03-11 22:56:53,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:53,429 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:56:53,430 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:56:53,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 22:56:53,430 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:56:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:56:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash 531032408, now seen corresponding path program 108 times [2021-03-11 22:56:53,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:56:53,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628513688] [2021-03-11 22:56:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:56:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:56:53,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:53,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:56:53,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:56:53,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:56:53,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:56:53,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:56:53,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:56:53,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:56:53,459 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:56:53,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:56:53,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:56:53,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:56:53,491 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:56:53,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:56:53,523 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:56:53,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:56:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:56:53,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628513688] [2021-03-11 22:56:53,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:56:53,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:56:53,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582200169] [2021-03-11 22:56:53,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:56:53,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:56:53,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:56:53,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:56:53,545 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:56:53,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 943 transitions, 44935 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:53,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:56:53,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:56:53,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:56:57,469 INFO L129 PetriNetUnfolder]: 473/8511 cut-off events. [2021-03-11 22:56:57,470 INFO L130 PetriNetUnfolder]: For 457984/465120 co-relation queries the response was YES. [2021-03-11 22:56:57,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74811 conditions, 8511 events. 473/8511 cut-off events. For 457984/465120 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 148566 event pairs, 349 based on Foata normal form. 64/8143 useless extension candidates. Maximal degree in co-relation 74623. Up to 1488 conditions per place. [2021-03-11 22:56:57,572 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 541 selfloop transitions, 402 changer transitions 2/959 dead transitions. [2021-03-11 22:56:57,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 959 transitions, 47221 flow [2021-03-11 22:56:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:56:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:56:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:56:57,575 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:56:57,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:56:57,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:56:57,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:56:57,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:56:57,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:57,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:57,576 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:56:57,576 INFO L185 Difference]: Start difference. First operand has 577 places, 943 transitions, 44935 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:56:57,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 959 transitions, 47221 flow [2021-03-11 22:57:02,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 959 transitions, 46407 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-11 22:57:02,711 INFO L241 Difference]: Finished difference. Result has 578 places, 941 transitions, 44799 flow [2021-03-11 22:57:02,711 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44131, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44799, PETRI_PLACES=578, PETRI_TRANSITIONS=941} [2021-03-11 22:57:02,711 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 534 predicate places. [2021-03-11 22:57:02,711 INFO L480 AbstractCegarLoop]: Abstraction has has 578 places, 941 transitions, 44799 flow [2021-03-11 22:57:02,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:02,711 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:02,711 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:02,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 22:57:02,712 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1587332626, now seen corresponding path program 109 times [2021-03-11 22:57:02,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:02,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184537976] [2021-03-11 22:57:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:02,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:02,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:02,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:02,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:02,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:02,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:02,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:02,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:02,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:02,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:02,749 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:57:02,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:57:02,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:57:02,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:57:02,785 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:02,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:02,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184537976] [2021-03-11 22:57:02,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:02,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:02,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739882112] [2021-03-11 22:57:02,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:02,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:02,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:02,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:02,805 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:02,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 941 transitions, 44799 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:02,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:02,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:02,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:57:06,982 INFO L129 PetriNetUnfolder]: 473/8503 cut-off events. [2021-03-11 22:57:06,982 INFO L130 PetriNetUnfolder]: For 456529/463654 co-relation queries the response was YES. [2021-03-11 22:57:07,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74747 conditions, 8503 events. 473/8503 cut-off events. For 456529/463654 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 148385 event pairs, 349 based on Foata normal form. 62/8137 useless extension candidates. Maximal degree in co-relation 74560. Up to 1488 conditions per place. [2021-03-11 22:57:07,084 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 505 selfloop transitions, 436 changer transitions 2/957 dead transitions. [2021-03-11 22:57:07,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 957 transitions, 47081 flow [2021-03-11 22:57:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:57:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:57:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:57:07,086 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:57:07,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:57:07,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:57:07,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:57:07,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:57:07,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:07,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:07,087 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:07,087 INFO L185 Difference]: Start difference. First operand has 578 places, 941 transitions, 44799 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:57:07,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 957 transitions, 47081 flow [2021-03-11 22:57:11,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 957 transitions, 46278 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 22:57:12,010 INFO L241 Difference]: Finished difference. Result has 581 places, 948 transitions, 45238 flow [2021-03-11 22:57:12,010 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44006, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45238, PETRI_PLACES=581, PETRI_TRANSITIONS=948} [2021-03-11 22:57:12,010 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 537 predicate places. [2021-03-11 22:57:12,010 INFO L480 AbstractCegarLoop]: Abstraction has has 581 places, 948 transitions, 45238 flow [2021-03-11 22:57:12,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:12,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:12,011 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:12,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 22:57:12,011 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1199113590, now seen corresponding path program 110 times [2021-03-11 22:57:12,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:12,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227515707] [2021-03-11 22:57:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:12,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:12,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:12,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:12,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:12,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:12,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:12,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:12,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:12,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:12,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:12,048 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:57:12,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:57:12,064 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:57:12,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:57:12,095 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:12,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:12,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227515707] [2021-03-11 22:57:12,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:12,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:12,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643303217] [2021-03-11 22:57:12,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:12,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:12,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:12,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:12,115 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:12,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 948 transitions, 45238 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:12,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:12,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:12,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:57:16,384 INFO L129 PetriNetUnfolder]: 473/8481 cut-off events. [2021-03-11 22:57:16,384 INFO L130 PetriNetUnfolder]: For 465108/471329 co-relation queries the response was YES. [2021-03-11 22:57:16,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74810 conditions, 8481 events. 473/8481 cut-off events. For 465108/471329 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 148060 event pairs, 457 based on Foata normal form. 62/8115 useless extension candidates. Maximal degree in co-relation 74622. Up to 1488 conditions per place. [2021-03-11 22:57:16,508 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 506 selfloop transitions, 434 changer transitions 1/955 dead transitions. [2021-03-11 22:57:16,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 955 transitions, 47174 flow [2021-03-11 22:57:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:57:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:57:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:57:16,509 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:57:16,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:57:16,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:57:16,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:57:16,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:57:16,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:16,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:16,510 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:16,511 INFO L185 Difference]: Start difference. First operand has 581 places, 948 transitions, 45238 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:57:16,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 955 transitions, 47174 flow [2021-03-11 22:57:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 955 transitions, 46526 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-03-11 22:57:21,350 INFO L241 Difference]: Finished difference. Result has 585 places, 947 transitions, 45388 flow [2021-03-11 22:57:21,350 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44600, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=434, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45388, PETRI_PLACES=585, PETRI_TRANSITIONS=947} [2021-03-11 22:57:21,350 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 541 predicate places. [2021-03-11 22:57:21,350 INFO L480 AbstractCegarLoop]: Abstraction has has 585 places, 947 transitions, 45388 flow [2021-03-11 22:57:21,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:21,350 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:21,350 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:21,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 22:57:21,350 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash 751937896, now seen corresponding path program 111 times [2021-03-11 22:57:21,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:21,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326980336] [2021-03-11 22:57:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:21,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:21,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:21,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:21,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:21,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:21,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:21,368 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:21,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:21,376 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:21,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:21,388 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:57:21,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:57:21,414 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 22:57:21,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 22:57:21,435 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:21,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:21,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326980336] [2021-03-11 22:57:21,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:21,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:21,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588001331] [2021-03-11 22:57:21,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:21,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:21,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:21,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:21,455 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:21,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 947 transitions, 45388 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:21,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:21,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:21,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:57:25,649 INFO L129 PetriNetUnfolder]: 473/8492 cut-off events. [2021-03-11 22:57:25,650 INFO L130 PetriNetUnfolder]: For 463097/470231 co-relation queries the response was YES. [2021-03-11 22:57:25,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75186 conditions, 8492 events. 473/8492 cut-off events. For 463097/470231 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 148204 event pairs, 349 based on Foata normal form. 64/8125 useless extension candidates. Maximal degree in co-relation 74998. Up to 1488 conditions per place. [2021-03-11 22:57:25,752 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 427 changer transitions 1/954 dead transitions. [2021-03-11 22:57:25,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 954 transitions, 47322 flow [2021-03-11 22:57:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:57:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:57:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:57:25,753 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:57:25,753 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:57:25,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:57:25,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:57:25,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:57:25,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:25,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:25,754 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:25,754 INFO L185 Difference]: Start difference. First operand has 585 places, 947 transitions, 45388 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:57:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 954 transitions, 47322 flow [2021-03-11 22:57:30,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 954 transitions, 46465 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-11 22:57:30,466 INFO L241 Difference]: Finished difference. Result has 587 places, 946 transitions, 45310 flow [2021-03-11 22:57:30,466 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44541, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45310, PETRI_PLACES=587, PETRI_TRANSITIONS=946} [2021-03-11 22:57:30,466 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 543 predicate places. [2021-03-11 22:57:30,466 INFO L480 AbstractCegarLoop]: Abstraction has has 587 places, 946 transitions, 45310 flow [2021-03-11 22:57:30,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:30,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:30,466 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:30,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 22:57:30,467 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:30,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1887007166, now seen corresponding path program 112 times [2021-03-11 22:57:30,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:30,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947168469] [2021-03-11 22:57:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:30,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:30,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:30,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:30,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:30,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:30,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:30,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:30,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:30,493 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:30,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 22:57:30,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:57:30,531 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:57:30,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:57:30,552 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:30,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:30,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947168469] [2021-03-11 22:57:30,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:30,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:30,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389379135] [2021-03-11 22:57:30,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:30,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:30,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:30,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:30,572 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:30,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 946 transitions, 45310 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:30,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:30,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:30,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:57:34,929 INFO L129 PetriNetUnfolder]: 473/8489 cut-off events. [2021-03-11 22:57:34,929 INFO L130 PetriNetUnfolder]: For 462435/469573 co-relation queries the response was YES. [2021-03-11 22:57:34,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75157 conditions, 8489 events. 473/8489 cut-off events. For 462435/469573 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 148075 event pairs, 349 based on Foata normal form. 64/8122 useless extension candidates. Maximal degree in co-relation 74969. Up to 1488 conditions per place. [2021-03-11 22:57:35,013 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 515 selfloop transitions, 423 changer transitions 1/953 dead transitions. [2021-03-11 22:57:35,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 953 transitions, 47242 flow [2021-03-11 22:57:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:57:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:57:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:57:35,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:57:35,015 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:57:35,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:57:35,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:57:35,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:57:35,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:35,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:35,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:35,016 INFO L185 Difference]: Start difference. First operand has 587 places, 946 transitions, 45310 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:57:35,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 953 transitions, 47242 flow [2021-03-11 22:57:39,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 953 transitions, 46482 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:57:39,440 INFO L241 Difference]: Finished difference. Result has 590 places, 945 transitions, 45326 flow [2021-03-11 22:57:39,441 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44560, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45326, PETRI_PLACES=590, PETRI_TRANSITIONS=945} [2021-03-11 22:57:39,441 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 546 predicate places. [2021-03-11 22:57:39,441 INFO L480 AbstractCegarLoop]: Abstraction has has 590 places, 945 transitions, 45326 flow [2021-03-11 22:57:39,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:39,441 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:39,441 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:39,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 22:57:39,441 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:39,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2001762118, now seen corresponding path program 113 times [2021-03-11 22:57:39,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:39,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254550199] [2021-03-11 22:57:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:39,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:39,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:39,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:39,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:39,452 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:39,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:39,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:39,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:39,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:39,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:39,479 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:57:39,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:57:39,495 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:57:39,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:57:39,515 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:39,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254550199] [2021-03-11 22:57:39,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:39,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:39,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847176628] [2021-03-11 22:57:39,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:39,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:39,535 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:39,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 945 transitions, 45326 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:39,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:39,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:39,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:57:43,774 INFO L129 PetriNetUnfolder]: 473/8483 cut-off events. [2021-03-11 22:57:43,774 INFO L130 PetriNetUnfolder]: For 462148/469286 co-relation queries the response was YES. [2021-03-11 22:57:43,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75228 conditions, 8483 events. 473/8483 cut-off events. For 462148/469286 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 148057 event pairs, 349 based on Foata normal form. 64/8120 useless extension candidates. Maximal degree in co-relation 75040. Up to 1488 conditions per place. [2021-03-11 22:57:43,870 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 519 selfloop transitions, 417 changer transitions 2/952 dead transitions. [2021-03-11 22:57:43,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 952 transitions, 47256 flow [2021-03-11 22:57:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:57:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:57:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:57:43,871 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:57:43,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:57:43,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:57:43,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:57:43,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:57:43,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:43,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:43,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:43,873 INFO L185 Difference]: Start difference. First operand has 590 places, 945 transitions, 45326 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:57:43,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 952 transitions, 47256 flow [2021-03-11 22:57:48,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 952 transitions, 46564 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:57:48,484 INFO L241 Difference]: Finished difference. Result has 593 places, 943 transitions, 45338 flow [2021-03-11 22:57:48,484 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44644, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45338, PETRI_PLACES=593, PETRI_TRANSITIONS=943} [2021-03-11 22:57:48,484 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 549 predicate places. [2021-03-11 22:57:48,485 INFO L480 AbstractCegarLoop]: Abstraction has has 593 places, 943 transitions, 45338 flow [2021-03-11 22:57:48,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:48,485 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:48,485 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:48,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 22:57:48,485 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 487497808, now seen corresponding path program 114 times [2021-03-11 22:57:48,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:48,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021953899] [2021-03-11 22:57:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:48,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:48,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:48,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:48,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:48,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:48,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:48,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:48,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:48,510 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:48,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:48,522 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:57:48,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:57:48,538 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:57:48,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:57:48,558 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:48,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:48,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021953899] [2021-03-11 22:57:48,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:48,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:48,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999133401] [2021-03-11 22:57:48,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:48,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:48,578 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:48,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 943 transitions, 45338 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:48,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:48,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:48,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:57:52,770 INFO L129 PetriNetUnfolder]: 473/8476 cut-off events. [2021-03-11 22:57:52,770 INFO L130 PetriNetUnfolder]: For 462550/469684 co-relation queries the response was YES. [2021-03-11 22:57:52,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75462 conditions, 8476 events. 473/8476 cut-off events. For 462550/469684 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 147813 event pairs, 349 based on Foata normal form. 64/8114 useless extension candidates. Maximal degree in co-relation 75274. Up to 1488 conditions per place. [2021-03-11 22:57:52,872 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 520 selfloop transitions, 415 changer transitions 1/950 dead transitions. [2021-03-11 22:57:52,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 950 transitions, 47264 flow [2021-03-11 22:57:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:57:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:57:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:57:52,873 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:57:52,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:57:52,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:57:52,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:57:52,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:57:52,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:52,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:52,874 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:52,874 INFO L185 Difference]: Start difference. First operand has 593 places, 943 transitions, 45338 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:57:52,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 950 transitions, 47264 flow [2021-03-11 22:57:57,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 950 transitions, 46498 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 22:57:57,569 INFO L241 Difference]: Finished difference. Result has 596 places, 942 transitions, 45337 flow [2021-03-11 22:57:57,570 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44582, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45337, PETRI_PLACES=596, PETRI_TRANSITIONS=942} [2021-03-11 22:57:57,570 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 552 predicate places. [2021-03-11 22:57:57,570 INFO L480 AbstractCegarLoop]: Abstraction has has 596 places, 942 transitions, 45337 flow [2021-03-11 22:57:57,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:57,570 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:57:57,570 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:57:57,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 22:57:57,570 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:57:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:57:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash -602945428, now seen corresponding path program 115 times [2021-03-11 22:57:57,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:57:57,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041564724] [2021-03-11 22:57:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:57:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:57:57,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:57,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:57:57,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:57:57,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:57:57,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:57:57,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:57:57,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:57:57,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:57:57,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:57:57,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:57:57,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:57:57,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:57:57,619 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:57:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:57:57,643 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:57:57,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:57:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:57:57,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041564724] [2021-03-11 22:57:57,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:57:57,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:57:57,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112282551] [2021-03-11 22:57:57,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:57:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:57:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:57:57,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:57:57,666 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:57:57,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 942 transitions, 45337 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:57:57,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:57:57,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:57:57,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:01,766 INFO L129 PetriNetUnfolder]: 473/8454 cut-off events. [2021-03-11 22:58:01,767 INFO L130 PetriNetUnfolder]: For 464307/470530 co-relation queries the response was YES. [2021-03-11 22:58:01,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75498 conditions, 8454 events. 473/8454 cut-off events. For 464307/470530 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 147433 event pairs, 457 based on Foata normal form. 62/8089 useless extension candidates. Maximal degree in co-relation 75310. Up to 1485 conditions per place. [2021-03-11 22:58:01,867 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 561 selfloop transitions, 411 changer transitions 2/988 dead transitions. [2021-03-11 22:58:01,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 988 transitions, 49344 flow [2021-03-11 22:58:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:01,868 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:01,868 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:01,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:01,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:01,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:01,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:01,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:01,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:01,870 INFO L185 Difference]: Start difference. First operand has 596 places, 942 transitions, 45337 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:01,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 988 transitions, 49344 flow [2021-03-11 22:58:06,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 988 transitions, 48470 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:58:06,642 INFO L241 Difference]: Finished difference. Result has 600 places, 955 transitions, 46286 flow [2021-03-11 22:58:06,642 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44515, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46286, PETRI_PLACES=600, PETRI_TRANSITIONS=955} [2021-03-11 22:58:06,642 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 556 predicate places. [2021-03-11 22:58:06,642 INFO L480 AbstractCegarLoop]: Abstraction has has 600 places, 955 transitions, 46286 flow [2021-03-11 22:58:06,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:06,642 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:58:06,642 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:58:06,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 22:58:06,643 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:58:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:58:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1386535776, now seen corresponding path program 116 times [2021-03-11 22:58:06,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:58:06,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709485313] [2021-03-11 22:58:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:58:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:58:06,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:06,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:58:06,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:06,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:58:06,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:58:06,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:58:06,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:58:06,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:58:06,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:58:06,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:58:06,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:58:06,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:58:06,697 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:58:06,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:58:06,721 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:58:06,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:58:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:58:06,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709485313] [2021-03-11 22:58:06,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:58:06,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:58:06,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383779158] [2021-03-11 22:58:06,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:58:06,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:58:06,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:58:06,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:58:06,742 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:58:06,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 955 transitions, 46286 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:06,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:58:06,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:58:06,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:10,809 INFO L129 PetriNetUnfolder]: 473/8446 cut-off events. [2021-03-11 22:58:10,809 INFO L130 PetriNetUnfolder]: For 471876/477989 co-relation queries the response was YES. [2021-03-11 22:58:10,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75605 conditions, 8446 events. 473/8446 cut-off events. For 471876/477989 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 147300 event pairs, 457 based on Foata normal form. 64/8082 useless extension candidates. Maximal degree in co-relation 75415. Up to 1485 conditions per place. [2021-03-11 22:58:10,909 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 536 selfloop transitions, 434 changer transitions 2/986 dead transitions. [2021-03-11 22:58:10,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 986 transitions, 49348 flow [2021-03-11 22:58:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:10,911 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:10,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:10,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:10,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:10,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:10,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:10,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:10,912 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:10,912 INFO L185 Difference]: Start difference. First operand has 600 places, 955 transitions, 46286 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 986 transitions, 49348 flow [2021-03-11 22:58:15,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 986 transitions, 48663 flow, removed 41 selfloop flow, removed 8 redundant places. [2021-03-11 22:58:15,986 INFO L241 Difference]: Finished difference. Result has 601 places, 977 transitions, 47622 flow [2021-03-11 22:58:15,986 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45611, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47622, PETRI_PLACES=601, PETRI_TRANSITIONS=977} [2021-03-11 22:58:15,986 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 557 predicate places. [2021-03-11 22:58:15,986 INFO L480 AbstractCegarLoop]: Abstraction has has 601 places, 977 transitions, 47622 flow [2021-03-11 22:58:15,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:15,986 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:58:15,986 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:58:15,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 22:58:15,987 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:58:15,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:58:15,987 INFO L82 PathProgramCache]: Analyzing trace with hash -224405182, now seen corresponding path program 117 times [2021-03-11 22:58:15,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:58:15,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759869264] [2021-03-11 22:58:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:58:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:58:15,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:15,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:58:15,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:15,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:58:15,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:58:15,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:58:16,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:58:16,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:58:16,012 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:58:16,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:58:16,024 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:58:16,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:58:16,040 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:58:16,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:58:16,060 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:58:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:58:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:58:16,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759869264] [2021-03-11 22:58:16,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:58:16,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:58:16,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146522117] [2021-03-11 22:58:16,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:58:16,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:58:16,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:58:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:58:16,080 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:58:16,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 977 transitions, 47622 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:16,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:58:16,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:58:16,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:20,177 INFO L129 PetriNetUnfolder]: 473/8455 cut-off events. [2021-03-11 22:58:20,177 INFO L130 PetriNetUnfolder]: For 475888/482946 co-relation queries the response was YES. [2021-03-11 22:58:20,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76018 conditions, 8455 events. 473/8455 cut-off events. For 475888/482946 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 147309 event pairs, 349 based on Foata normal form. 64/8101 useless extension candidates. Maximal degree in co-relation 75831. Up to 1485 conditions per place. [2021-03-11 22:58:20,277 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 537 selfloop transitions, 432 changer transitions 1/984 dead transitions. [2021-03-11 22:58:20,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 984 transitions, 49616 flow [2021-03-11 22:58:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:20,278 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:20,278 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:20,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:20,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:20,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:20,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:20,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:20,279 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:20,279 INFO L185 Difference]: Start difference. First operand has 601 places, 977 transitions, 47622 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 984 transitions, 49616 flow [2021-03-11 22:58:25,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 984 transitions, 48969 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-03-11 22:58:25,467 INFO L241 Difference]: Finished difference. Result has 605 places, 976 transitions, 47783 flow [2021-03-11 22:58:25,467 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46985, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47783, PETRI_PLACES=605, PETRI_TRANSITIONS=976} [2021-03-11 22:58:25,468 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 561 predicate places. [2021-03-11 22:58:25,468 INFO L480 AbstractCegarLoop]: Abstraction has has 605 places, 976 transitions, 47783 flow [2021-03-11 22:58:25,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:25,468 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:58:25,468 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:58:25,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 22:58:25,468 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:58:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:58:25,468 INFO L82 PathProgramCache]: Analyzing trace with hash -613448532, now seen corresponding path program 118 times [2021-03-11 22:58:25,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:58:25,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31841571] [2021-03-11 22:58:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:58:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:58:25,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:25,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:58:25,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:25,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:58:25,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:58:25,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:58:25,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:58:25,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:58:25,497 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:58:25,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:58:25,509 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:58:25,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:58:25,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:58:25,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:58:25,547 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:58:25,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:58:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:58:25,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31841571] [2021-03-11 22:58:25,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:58:25,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:58:25,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492899092] [2021-03-11 22:58:25,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:58:25,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:58:25,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:58:25,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:58:25,567 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:58:25,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 976 transitions, 47783 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:25,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:58:25,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:58:25,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:29,628 INFO L129 PetriNetUnfolder]: 473/8449 cut-off events. [2021-03-11 22:58:29,628 INFO L130 PetriNetUnfolder]: For 475965/483053 co-relation queries the response was YES. [2021-03-11 22:58:29,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76353 conditions, 8449 events. 473/8449 cut-off events. For 475965/483053 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 147183 event pairs, 349 based on Foata normal form. 64/8094 useless extension candidates. Maximal degree in co-relation 76166. Up to 1485 conditions per place. [2021-03-11 22:58:29,728 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 569 selfloop transitions, 399 changer transitions 1/983 dead transitions. [2021-03-11 22:58:29,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 983 transitions, 49775 flow [2021-03-11 22:58:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:29,729 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:29,729 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:29,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:29,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:29,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:29,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:29,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:29,730 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:29,730 INFO L185 Difference]: Start difference. First operand has 605 places, 976 transitions, 47783 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:29,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 983 transitions, 49775 flow [2021-03-11 22:58:34,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 983 transitions, 49076 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:58:34,965 INFO L241 Difference]: Finished difference. Result has 608 places, 975 transitions, 47830 flow [2021-03-11 22:58:34,965 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47094, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47830, PETRI_PLACES=608, PETRI_TRANSITIONS=975} [2021-03-11 22:58:34,965 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 564 predicate places. [2021-03-11 22:58:34,965 INFO L480 AbstractCegarLoop]: Abstraction has has 608 places, 975 transitions, 47830 flow [2021-03-11 22:58:34,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:34,965 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:58:34,966 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:58:34,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 22:58:34,966 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:58:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:58:34,966 INFO L82 PathProgramCache]: Analyzing trace with hash -75592954, now seen corresponding path program 119 times [2021-03-11 22:58:34,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:58:34,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035182557] [2021-03-11 22:58:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:58:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:58:34,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:34,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:58:34,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:34,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:58:34,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:58:34,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:58:34,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:58:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:58:34,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:58:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:58:35,008 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:58:35,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:58:35,024 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:58:35,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:58:35,043 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:58:35,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:58:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:58:35,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035182557] [2021-03-11 22:58:35,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:58:35,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:58:35,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673911346] [2021-03-11 22:58:35,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:58:35,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:58:35,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:58:35,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:58:35,064 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:58:35,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 975 transitions, 47830 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:35,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:58:35,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:58:35,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:39,075 INFO L129 PetriNetUnfolder]: 473/8443 cut-off events. [2021-03-11 22:58:39,075 INFO L130 PetriNetUnfolder]: For 476956/484017 co-relation queries the response was YES. [2021-03-11 22:58:39,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76635 conditions, 8443 events. 473/8443 cut-off events. For 476956/484017 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 147131 event pairs, 349 based on Foata normal form. 64/8077 useless extension candidates. Maximal degree in co-relation 76448. Up to 1485 conditions per place. [2021-03-11 22:58:39,176 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 569 selfloop transitions, 398 changer transitions 1/982 dead transitions. [2021-03-11 22:58:39,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 982 transitions, 49820 flow [2021-03-11 22:58:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:39,177 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:39,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:39,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:39,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:39,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:39,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:39,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:39,178 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:39,179 INFO L185 Difference]: Start difference. First operand has 608 places, 975 transitions, 47830 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:39,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 982 transitions, 49820 flow [2021-03-11 22:58:44,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 982 transitions, 48999 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-11 22:58:44,424 INFO L241 Difference]: Finished difference. Result has 608 places, 974 transitions, 47739 flow [2021-03-11 22:58:44,424 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47019, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47739, PETRI_PLACES=608, PETRI_TRANSITIONS=974} [2021-03-11 22:58:44,424 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 564 predicate places. [2021-03-11 22:58:44,424 INFO L480 AbstractCegarLoop]: Abstraction has has 608 places, 974 transitions, 47739 flow [2021-03-11 22:58:44,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:44,424 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:58:44,424 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:58:44,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-11 22:58:44,424 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:58:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:58:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1856978182, now seen corresponding path program 120 times [2021-03-11 22:58:44,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:58:44,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376974673] [2021-03-11 22:58:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:58:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:58:44,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:44,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:58:44,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:44,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:58:44,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:58:44,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:58:44,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:58:44,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:58:44,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:58:44,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:58:44,470 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:58:44,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:58:44,486 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:58:44,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:58:44,508 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:58:44,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:58:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:58:44,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376974673] [2021-03-11 22:58:44,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:58:44,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:58:44,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740165139] [2021-03-11 22:58:44,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:58:44,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:58:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:58:44,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:58:44,528 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:58:44,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 974 transitions, 47739 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:44,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:58:44,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:58:44,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:48,491 INFO L129 PetriNetUnfolder]: 473/8436 cut-off events. [2021-03-11 22:58:48,491 INFO L130 PetriNetUnfolder]: For 473186/480295 co-relation queries the response was YES. [2021-03-11 22:58:48,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76675 conditions, 8436 events. 473/8436 cut-off events. For 473186/480295 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 146960 event pairs, 349 based on Foata normal form. 64/8071 useless extension candidates. Maximal degree in co-relation 76491. Up to 1485 conditions per place. [2021-03-11 22:58:48,591 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 525 selfloop transitions, 441 changer transitions 1/981 dead transitions. [2021-03-11 22:58:48,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 981 transitions, 49727 flow [2021-03-11 22:58:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:48,592 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:48,592 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:48,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:48,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:48,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:48,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:48,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:48,594 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:48,594 INFO L185 Difference]: Start difference. First operand has 608 places, 974 transitions, 47739 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:48,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 981 transitions, 49727 flow [2021-03-11 22:58:53,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 981 transitions, 48934 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:58:54,010 INFO L241 Difference]: Finished difference. Result has 610 places, 973 transitions, 47764 flow [2021-03-11 22:58:54,010 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46956, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47764, PETRI_PLACES=610, PETRI_TRANSITIONS=973} [2021-03-11 22:58:54,010 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 566 predicate places. [2021-03-11 22:58:54,010 INFO L480 AbstractCegarLoop]: Abstraction has has 610 places, 973 transitions, 47764 flow [2021-03-11 22:58:54,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:54,010 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:58:54,010 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:58:54,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-11 22:58:54,010 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:58:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:58:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1564338728, now seen corresponding path program 121 times [2021-03-11 22:58:54,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:58:54,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524168703] [2021-03-11 22:58:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:58:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:58:54,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:54,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:58:54,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:58:54,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:58:54,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:58:54,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:58:54,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:58:54,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:58:54,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:58:54,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:58:54,048 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:58:54,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:58:54,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:58:54,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:58:54,083 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:58:54,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:58:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:58:54,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524168703] [2021-03-11 22:58:54,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:58:54,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:58:54,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794464991] [2021-03-11 22:58:54,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:58:54,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:58:54,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:58:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:58:54,114 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:58:54,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 973 transitions, 47764 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:54,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:58:54,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:58:54,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:58:58,334 INFO L129 PetriNetUnfolder]: 473/8431 cut-off events. [2021-03-11 22:58:58,334 INFO L130 PetriNetUnfolder]: For 472471/479503 co-relation queries the response was YES. [2021-03-11 22:58:58,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76685 conditions, 8431 events. 473/8431 cut-off events. For 472471/479503 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 146779 event pairs, 349 based on Foata normal form. 62/8064 useless extension candidates. Maximal degree in co-relation 76501. Up to 1485 conditions per place. [2021-03-11 22:58:58,435 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 560 selfloop transitions, 405 changer transitions 1/980 dead transitions. [2021-03-11 22:58:58,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 980 transitions, 49750 flow [2021-03-11 22:58:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:58:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:58:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:58:58,437 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:58:58,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:58:58,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:58:58,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:58:58,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:58:58,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:58,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:58,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:58:58,438 INFO L185 Difference]: Start difference. First operand has 610 places, 973 transitions, 47764 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:58:58,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 980 transitions, 49750 flow [2021-03-11 22:59:03,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 980 transitions, 48922 flow, removed 32 selfloop flow, removed 6 redundant places. [2021-03-11 22:59:03,627 INFO L241 Difference]: Finished difference. Result has 612 places, 972 transitions, 47678 flow [2021-03-11 22:59:03,628 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46946, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47678, PETRI_PLACES=612, PETRI_TRANSITIONS=972} [2021-03-11 22:59:03,628 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 568 predicate places. [2021-03-11 22:59:03,628 INFO L480 AbstractCegarLoop]: Abstraction has has 612 places, 972 transitions, 47678 flow [2021-03-11 22:59:03,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:03,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:03,628 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:03,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-11 22:59:03,628 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:03,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1707540120, now seen corresponding path program 122 times [2021-03-11 22:59:03,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:03,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678381284] [2021-03-11 22:59:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:03,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:03,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:03,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:03,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:03,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:03,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:03,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:03,657 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:59:03,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:59:03,671 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:59:03,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:59:03,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:03,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:03,713 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:03,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:03,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678381284] [2021-03-11 22:59:03,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:03,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:03,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530942588] [2021-03-11 22:59:03,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:03,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:03,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:03,735 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:03,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 972 transitions, 47678 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:03,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:03,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:03,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:59:07,939 INFO L129 PetriNetUnfolder]: 473/8424 cut-off events. [2021-03-11 22:59:07,939 INFO L130 PetriNetUnfolder]: For 471496/478552 co-relation queries the response was YES. [2021-03-11 22:59:08,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76739 conditions, 8424 events. 473/8424 cut-off events. For 471496/478552 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 146668 event pairs, 349 based on Foata normal form. 62/8065 useless extension candidates. Maximal degree in co-relation 76556. Up to 1485 conditions per place. [2021-03-11 22:59:08,037 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 561 selfloop transitions, 403 changer transitions 1/979 dead transitions. [2021-03-11 22:59:08,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 979 transitions, 49662 flow [2021-03-11 22:59:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:59:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:59:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:59:08,038 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:59:08,038 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:59:08,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:59:08,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:59:08,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:59:08,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:08,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:08,039 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:08,040 INFO L185 Difference]: Start difference. First operand has 612 places, 972 transitions, 47678 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:59:08,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 979 transitions, 49662 flow [2021-03-11 22:59:12,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 979 transitions, 48863 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:59:13,007 INFO L241 Difference]: Finished difference. Result has 614 places, 971 transitions, 47627 flow [2021-03-11 22:59:13,007 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46889, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=403, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47627, PETRI_PLACES=614, PETRI_TRANSITIONS=971} [2021-03-11 22:59:13,007 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 570 predicate places. [2021-03-11 22:59:13,007 INFO L480 AbstractCegarLoop]: Abstraction has has 614 places, 971 transitions, 47627 flow [2021-03-11 22:59:13,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:13,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:13,007 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:13,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-11 22:59:13,008 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:13,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1879127328, now seen corresponding path program 123 times [2021-03-11 22:59:13,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:13,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750410051] [2021-03-11 22:59:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:13,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:13,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:13,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:13,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:13,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:13,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:13,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:13,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:13,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:59:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:59:13,045 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 22:59:13,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 22:59:13,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:13,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:13,090 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:13,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:13,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750410051] [2021-03-11 22:59:13,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:13,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:13,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036392082] [2021-03-11 22:59:13,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:13,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:13,110 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:13,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 971 transitions, 47627 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:13,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:13,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:13,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:59:17,291 INFO L129 PetriNetUnfolder]: 473/8418 cut-off events. [2021-03-11 22:59:17,292 INFO L130 PetriNetUnfolder]: For 471112/478140 co-relation queries the response was YES. [2021-03-11 22:59:17,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76719 conditions, 8418 events. 473/8418 cut-off events. For 471112/478140 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 146539 event pairs, 349 based on Foata normal form. 64/8047 useless extension candidates. Maximal degree in co-relation 76536. Up to 1485 conditions per place. [2021-03-11 22:59:17,390 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 427 changer transitions 2/978 dead transitions. [2021-03-11 22:59:17,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 978 transitions, 49609 flow [2021-03-11 22:59:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:59:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:59:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:59:17,391 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:59:17,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:59:17,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:59:17,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:59:17,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:59:17,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:17,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:17,392 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:17,392 INFO L185 Difference]: Start difference. First operand has 614 places, 971 transitions, 47627 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:59:17,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 978 transitions, 49609 flow [2021-03-11 22:59:22,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 978 transitions, 48866 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 22:59:22,205 INFO L241 Difference]: Finished difference. Result has 617 places, 969 transitions, 47610 flow [2021-03-11 22:59:22,205 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46894, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47610, PETRI_PLACES=617, PETRI_TRANSITIONS=969} [2021-03-11 22:59:22,205 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 573 predicate places. [2021-03-11 22:59:22,205 INFO L480 AbstractCegarLoop]: Abstraction has has 617 places, 969 transitions, 47610 flow [2021-03-11 22:59:22,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:22,205 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:22,206 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:22,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-11 22:59:22,206 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:22,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:22,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1290239068, now seen corresponding path program 124 times [2021-03-11 22:59:22,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:22,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206103812] [2021-03-11 22:59:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:22,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:22,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:22,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:22,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:22,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:22,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:22,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:22,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:22,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:59:22,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:59:22,242 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:59:22,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:59:22,258 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:22,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:22,278 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:22,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:22,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206103812] [2021-03-11 22:59:22,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:22,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:22,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854633589] [2021-03-11 22:59:22,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:22,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:22,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:22,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:22,298 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:22,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 969 transitions, 47610 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:22,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:22,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:22,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:59:26,685 INFO L129 PetriNetUnfolder]: 473/8410 cut-off events. [2021-03-11 22:59:26,685 INFO L130 PetriNetUnfolder]: For 470603/477664 co-relation queries the response was YES. [2021-03-11 22:59:26,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76789 conditions, 8410 events. 473/8410 cut-off events. For 470603/477664 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 146305 event pairs, 349 based on Foata normal form. 64/8064 useless extension candidates. Maximal degree in co-relation 76606. Up to 1485 conditions per place. [2021-03-11 22:59:26,766 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 428 changer transitions 1/976 dead transitions. [2021-03-11 22:59:26,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 976 transitions, 49588 flow [2021-03-11 22:59:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:59:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:59:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:59:26,768 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:59:26,768 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:59:26,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:59:26,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:59:26,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:59:26,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:26,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:26,769 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:26,769 INFO L185 Difference]: Start difference. First operand has 617 places, 969 transitions, 47610 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:59:26,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 976 transitions, 49588 flow [2021-03-11 22:59:31,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 976 transitions, 48894 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:59:31,456 INFO L241 Difference]: Finished difference. Result has 620 places, 968 transitions, 47703 flow [2021-03-11 22:59:31,456 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46926, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47703, PETRI_PLACES=620, PETRI_TRANSITIONS=968} [2021-03-11 22:59:31,456 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 576 predicate places. [2021-03-11 22:59:31,456 INFO L480 AbstractCegarLoop]: Abstraction has has 620 places, 968 transitions, 47703 flow [2021-03-11 22:59:31,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:31,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:31,456 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:31,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-11 22:59:31,457 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1931642848, now seen corresponding path program 125 times [2021-03-11 22:59:31,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:31,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083550234] [2021-03-11 22:59:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:31,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:31,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:31,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:31,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:31,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:31,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:31,473 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:31,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:31,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:59:31,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:59:31,493 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:59:31,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:59:31,509 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:31,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:31,529 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:31,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:31,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083550234] [2021-03-11 22:59:31,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:31,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:31,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290324548] [2021-03-11 22:59:31,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:31,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:31,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:31,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:31,549 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:31,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 968 transitions, 47703 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:31,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:31,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:31,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:59:35,792 INFO L129 PetriNetUnfolder]: 473/8403 cut-off events. [2021-03-11 22:59:35,792 INFO L130 PetriNetUnfolder]: For 471739/478860 co-relation queries the response was YES. [2021-03-11 22:59:35,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77058 conditions, 8403 events. 473/8403 cut-off events. For 471739/478860 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 146305 event pairs, 349 based on Foata normal form. 64/8040 useless extension candidates. Maximal degree in co-relation 76875. Up to 1485 conditions per place. [2021-03-11 22:59:35,881 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 531 selfloop transitions, 428 changer transitions 2/975 dead transitions. [2021-03-11 22:59:35,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 975 transitions, 49679 flow [2021-03-11 22:59:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:59:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:59:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:59:35,883 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:59:35,883 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:59:35,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:59:35,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:59:35,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:59:35,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:35,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:35,884 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:35,884 INFO L185 Difference]: Start difference. First operand has 620 places, 968 transitions, 47703 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:59:35,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 975 transitions, 49679 flow [2021-03-11 22:59:40,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 975 transitions, 48843 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-11 22:59:40,462 INFO L241 Difference]: Finished difference. Result has 622 places, 966 transitions, 47591 flow [2021-03-11 22:59:40,462 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46877, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47591, PETRI_PLACES=622, PETRI_TRANSITIONS=966} [2021-03-11 22:59:40,463 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 578 predicate places. [2021-03-11 22:59:40,463 INFO L480 AbstractCegarLoop]: Abstraction has has 622 places, 966 transitions, 47591 flow [2021-03-11 22:59:40,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:40,463 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:40,463 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:40,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-11 22:59:40,463 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1135074106, now seen corresponding path program 126 times [2021-03-11 22:59:40,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:40,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416974335] [2021-03-11 22:59:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:40,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:40,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:40,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:40,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:40,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:40,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:40,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:40,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:40,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:59:40,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:59:40,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:59:40,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:59:40,521 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:40,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:40,541 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:40,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:40,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416974335] [2021-03-11 22:59:40,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:40,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:40,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241564886] [2021-03-11 22:59:40,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:40,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:40,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:40,560 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:40,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 966 transitions, 47591 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:40,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:40,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:40,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:59:44,785 INFO L129 PetriNetUnfolder]: 473/8395 cut-off events. [2021-03-11 22:59:44,785 INFO L130 PetriNetUnfolder]: For 467559/474596 co-relation queries the response was YES. [2021-03-11 22:59:44,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77093 conditions, 8395 events. 473/8395 cut-off events. For 467559/474596 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 146093 event pairs, 349 based on Foata normal form. 64/8031 useless extension candidates. Maximal degree in co-relation 76911. Up to 1485 conditions per place. [2021-03-11 22:59:44,878 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 433 changer transitions 2/973 dead transitions. [2021-03-11 22:59:44,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 973 transitions, 49563 flow [2021-03-11 22:59:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:59:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:59:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:59:44,879 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:59:44,879 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:59:44,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:59:44,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:59:44,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:59:44,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:44,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:44,880 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:44,880 INFO L185 Difference]: Start difference. First operand has 622 places, 966 transitions, 47591 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:59:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 973 transitions, 49563 flow [2021-03-11 22:59:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 973 transitions, 48718 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:59:49,728 INFO L241 Difference]: Finished difference. Result has 624 places, 964 transitions, 47484 flow [2021-03-11 22:59:49,728 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46756, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47484, PETRI_PLACES=624, PETRI_TRANSITIONS=964} [2021-03-11 22:59:49,728 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 580 predicate places. [2021-03-11 22:59:49,728 INFO L480 AbstractCegarLoop]: Abstraction has has 624 places, 964 transitions, 47484 flow [2021-03-11 22:59:49,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:49,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:49,729 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:49,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-11 22:59:49,729 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:49,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:49,729 INFO L82 PathProgramCache]: Analyzing trace with hash 412917950, now seen corresponding path program 127 times [2021-03-11 22:59:49,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:49,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182910312] [2021-03-11 22:59:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:49,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:49,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:49,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:49,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:49,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:49,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:49,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:49,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:49,754 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:59:49,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:59:49,766 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 22:59:49,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 22:59:49,782 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:49,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:49,802 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:49,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:49,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182910312] [2021-03-11 22:59:49,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:49,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863624176] [2021-03-11 22:59:49,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:49,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:49,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:49,822 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:49,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 964 transitions, 47484 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:49,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:49,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:49,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:59:53,903 INFO L129 PetriNetUnfolder]: 473/8369 cut-off events. [2021-03-11 22:59:53,903 INFO L130 PetriNetUnfolder]: For 468660/474801 co-relation queries the response was YES. [2021-03-11 22:59:53,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76942 conditions, 8369 events. 473/8369 cut-off events. For 468660/474801 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 145641 event pairs, 457 based on Foata normal form. 62/8014 useless extension candidates. Maximal degree in co-relation 76760. Up to 1485 conditions per place. [2021-03-11 22:59:54,013 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 399 changer transitions 2/971 dead transitions. [2021-03-11 22:59:54,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 971 transitions, 49452 flow [2021-03-11 22:59:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 22:59:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 22:59:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 22:59:54,014 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 22:59:54,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 22:59:54,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 22:59:54,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:59:54,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 22:59:54,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:54,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:54,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:54,015 INFO L185 Difference]: Start difference. First operand has 624 places, 964 transitions, 47484 flow. Second operand 9 states and 674 transitions. [2021-03-11 22:59:54,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 971 transitions, 49452 flow [2021-03-11 22:59:58,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 971 transitions, 48601 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:59:58,845 INFO L241 Difference]: Finished difference. Result has 626 places, 962 transitions, 47304 flow [2021-03-11 22:59:58,845 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46643, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47304, PETRI_PLACES=626, PETRI_TRANSITIONS=962} [2021-03-11 22:59:58,846 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 582 predicate places. [2021-03-11 22:59:58,846 INFO L480 AbstractCegarLoop]: Abstraction has has 626 places, 962 transitions, 47304 flow [2021-03-11 22:59:58,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:58,846 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:59:58,846 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:59:58,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-11 22:59:58,846 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:59:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:59:58,846 INFO L82 PathProgramCache]: Analyzing trace with hash -79559000, now seen corresponding path program 128 times [2021-03-11 22:59:58,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:59:58,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749041321] [2021-03-11 22:59:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:59:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:59:58,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:58,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:59:58,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:59:58,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:59:58,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:59:58,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:59:58,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:59:58,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:59:58,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:59:58,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:59:58,893 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 22:59:58,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 22:59:58,910 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 22:59:58,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 22:59:58,930 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 22:59:58,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 22:59:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:59:58,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749041321] [2021-03-11 22:59:58,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:59:58,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 22:59:58,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941865178] [2021-03-11 22:59:58,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 22:59:58,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:59:58,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 22:59:58,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 22:59:58,950 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 22:59:58,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 962 transitions, 47304 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:59:58,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:59:58,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 22:59:58,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:03,423 INFO L129 PetriNetUnfolder]: 473/8378 cut-off events. [2021-03-11 23:00:03,424 INFO L130 PetriNetUnfolder]: For 465530/472558 co-relation queries the response was YES. [2021-03-11 23:00:03,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76868 conditions, 8378 events. 473/8378 cut-off events. For 465530/472558 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 145713 event pairs, 349 based on Foata normal form. 64/8007 useless extension candidates. Maximal degree in co-relation 76686. Up to 1485 conditions per place. [2021-03-11 23:00:03,504 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 398 changer transitions 1/969 dead transitions. [2021-03-11 23:00:03,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 969 transitions, 49268 flow [2021-03-11 23:00:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:03,505 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:03,506 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:03,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:03,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:03,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:03,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:03,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:03,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:03,507 INFO L185 Difference]: Start difference. First operand has 626 places, 962 transitions, 47304 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:03,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 969 transitions, 49268 flow [2021-03-11 23:00:08,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 969 transitions, 48474 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 23:00:08,089 INFO L241 Difference]: Finished difference. Result has 628 places, 961 transitions, 47245 flow [2021-03-11 23:00:08,090 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46520, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47245, PETRI_PLACES=628, PETRI_TRANSITIONS=961} [2021-03-11 23:00:08,090 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 584 predicate places. [2021-03-11 23:00:08,090 INFO L480 AbstractCegarLoop]: Abstraction has has 628 places, 961 transitions, 47245 flow [2021-03-11 23:00:08,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:08,090 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:00:08,090 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:00:08,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-11 23:00:08,090 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:00:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:00:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash 964642844, now seen corresponding path program 129 times [2021-03-11 23:00:08,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:00:08,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734026010] [2021-03-11 23:00:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:00:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:00:08,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:08,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:00:08,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:08,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:00:08,101 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:00:08,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:00:08,107 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:00:08,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:00:08,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 23:00:08,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 23:00:08,127 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 23:00:08,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 23:00:08,142 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:00:08,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:00:08,162 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:00:08,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:00:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:00:08,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734026010] [2021-03-11 23:00:08,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:00:08,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:00:08,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390040339] [2021-03-11 23:00:08,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:00:08,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:00:08,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:00:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:00:08,183 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:00:08,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 961 transitions, 47245 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:08,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:00:08,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:00:08,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:12,627 INFO L129 PetriNetUnfolder]: 473/8372 cut-off events. [2021-03-11 23:00:12,627 INFO L130 PetriNetUnfolder]: For 465147/472208 co-relation queries the response was YES. [2021-03-11 23:00:12,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76844 conditions, 8372 events. 473/8372 cut-off events. For 465147/472208 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 145669 event pairs, 349 based on Foata normal form. 64/8026 useless extension candidates. Maximal degree in co-relation 76662. Up to 1485 conditions per place. [2021-03-11 23:00:12,710 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 554 selfloop transitions, 399 changer transitions 1/968 dead transitions. [2021-03-11 23:00:12,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 968 transitions, 49207 flow [2021-03-11 23:00:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:12,712 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:12,712 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:12,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:12,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:12,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:12,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:12,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:12,713 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:12,713 INFO L185 Difference]: Start difference. First operand has 628 places, 961 transitions, 47245 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:12,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 968 transitions, 49207 flow [2021-03-11 23:00:17,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 968 transitions, 48416 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 23:00:17,601 INFO L241 Difference]: Finished difference. Result has 630 places, 960 transitions, 47180 flow [2021-03-11 23:00:17,601 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46464, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47180, PETRI_PLACES=630, PETRI_TRANSITIONS=960} [2021-03-11 23:00:17,601 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 586 predicate places. [2021-03-11 23:00:17,601 INFO L480 AbstractCegarLoop]: Abstraction has has 630 places, 960 transitions, 47180 flow [2021-03-11 23:00:17,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:17,601 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:00:17,602 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:00:17,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-11 23:00:17,602 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:00:17,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:00:17,602 INFO L82 PathProgramCache]: Analyzing trace with hash 426787266, now seen corresponding path program 130 times [2021-03-11 23:00:17,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:00:17,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980804693] [2021-03-11 23:00:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:00:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:00:17,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:17,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:00:17,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:17,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:00:17,612 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:00:17,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:00:17,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:00:17,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:00:17,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 23:00:17,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 23:00:17,644 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 23:00:17,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 23:00:17,663 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:00:17,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:00:17,687 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:00:17,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:00:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:00:17,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980804693] [2021-03-11 23:00:17,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:00:17,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:00:17,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141123507] [2021-03-11 23:00:17,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:00:17,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:00:17,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:00:17,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:00:17,708 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:00:17,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 960 transitions, 47180 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:17,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:00:17,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:00:17,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:21,889 INFO L129 PetriNetUnfolder]: 473/8365 cut-off events. [2021-03-11 23:00:21,889 INFO L130 PetriNetUnfolder]: For 464915/472036 co-relation queries the response was YES. [2021-03-11 23:00:22,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76812 conditions, 8365 events. 473/8365 cut-off events. For 464915/472036 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 145398 event pairs, 349 based on Foata normal form. 64/8002 useless extension candidates. Maximal degree in co-relation 76630. Up to 1485 conditions per place. [2021-03-11 23:00:22,045 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 555 selfloop transitions, 397 changer transitions 1/967 dead transitions. [2021-03-11 23:00:22,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 967 transitions, 49140 flow [2021-03-11 23:00:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:22,046 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:22,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:22,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:22,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:22,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:22,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:22,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:22,047 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:22,047 INFO L185 Difference]: Start difference. First operand has 630 places, 960 transitions, 47180 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 967 transitions, 49140 flow [2021-03-11 23:00:26,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 967 transitions, 48332 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-11 23:00:26,904 INFO L241 Difference]: Finished difference. Result has 632 places, 959 transitions, 47106 flow [2021-03-11 23:00:26,905 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46382, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47106, PETRI_PLACES=632, PETRI_TRANSITIONS=959} [2021-03-11 23:00:26,905 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 588 predicate places. [2021-03-11 23:00:26,905 INFO L480 AbstractCegarLoop]: Abstraction has has 632 places, 959 transitions, 47106 flow [2021-03-11 23:00:26,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:26,905 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:00:26,905 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:00:26,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-11 23:00:26,905 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:00:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:00:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash 489805890, now seen corresponding path program 131 times [2021-03-11 23:00:26,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:00:26,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165238283] [2021-03-11 23:00:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:00:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:00:26,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:26,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:00:26,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:26,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:00:26,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:00:26,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:00:26,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:00:26,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:00:26,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 23:00:26,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 23:00:26,945 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 23:00:26,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 23:00:26,972 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:00:26,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:00:26,992 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:00:26,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:00:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:00:27,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165238283] [2021-03-11 23:00:27,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:00:27,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:00:27,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810324791] [2021-03-11 23:00:27,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:00:27,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:00:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:00:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:00:27,012 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:00:27,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 959 transitions, 47106 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:27,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:00:27,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:00:27,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:31,341 INFO L129 PetriNetUnfolder]: 473/8359 cut-off events. [2021-03-11 23:00:31,341 INFO L130 PetriNetUnfolder]: For 461883/468935 co-relation queries the response was YES. [2021-03-11 23:00:31,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76864 conditions, 8359 events. 473/8359 cut-off events. For 461883/468935 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 145363 event pairs, 349 based on Foata normal form. 64/7995 useless extension candidates. Maximal degree in co-relation 76683. Up to 1485 conditions per place. [2021-03-11 23:00:31,422 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 550 selfloop transitions, 400 changer transitions 2/966 dead transitions. [2021-03-11 23:00:31,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 966 transitions, 49064 flow [2021-03-11 23:00:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:31,423 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:31,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:31,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:31,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:31,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:31,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:31,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:31,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:31,424 INFO L185 Difference]: Start difference. First operand has 632 places, 959 transitions, 47106 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:31,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 966 transitions, 49064 flow [2021-03-11 23:00:36,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 966 transitions, 48276 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 23:00:36,277 INFO L241 Difference]: Finished difference. Result has 634 places, 957 transitions, 46982 flow [2021-03-11 23:00:36,277 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46328, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46982, PETRI_PLACES=634, PETRI_TRANSITIONS=957} [2021-03-11 23:00:36,277 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 590 predicate places. [2021-03-11 23:00:36,277 INFO L480 AbstractCegarLoop]: Abstraction has has 634 places, 957 transitions, 46982 flow [2021-03-11 23:00:36,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:36,278 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:00:36,278 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:00:36,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-11 23:00:36,278 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:00:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:00:36,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1396147696, now seen corresponding path program 132 times [2021-03-11 23:00:36,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:00:36,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294459591] [2021-03-11 23:00:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:00:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:00:36,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:36,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:00:36,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:36,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:00:36,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:00:36,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:00:36,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:00:36,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:00:36,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 23:00:36,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 23:00:36,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 23:00:36,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 23:00:36,344 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:00:36,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:00:36,364 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:00:36,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:00:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:00:36,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294459591] [2021-03-11 23:00:36,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:00:36,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:00:36,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659999443] [2021-03-11 23:00:36,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:00:36,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:00:36,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:00:36,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:00:36,384 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:00:36,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 957 transitions, 46982 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:36,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:00:36,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:00:36,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:40,552 INFO L129 PetriNetUnfolder]: 473/8335 cut-off events. [2021-03-11 23:00:40,553 INFO L130 PetriNetUnfolder]: For 463629/469770 co-relation queries the response was YES. [2021-03-11 23:00:40,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76783 conditions, 8335 events. 473/8335 cut-off events. For 463629/469770 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 144897 event pairs, 457 based on Foata normal form. 62/7980 useless extension candidates. Maximal degree in co-relation 76602. Up to 1485 conditions per place. [2021-03-11 23:00:40,630 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 549 selfloop transitions, 400 changer transitions 1/964 dead transitions. [2021-03-11 23:00:40,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 964 transitions, 48936 flow [2021-03-11 23:00:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:40,632 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:40,632 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:40,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:40,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:40,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:40,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:40,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:40,633 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:40,633 INFO L185 Difference]: Start difference. First operand has 634 places, 957 transitions, 46982 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:40,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 964 transitions, 48936 flow [2021-03-11 23:00:45,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 964 transitions, 48114 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-03-11 23:00:45,436 INFO L241 Difference]: Finished difference. Result has 635 places, 956 transitions, 46886 flow [2021-03-11 23:00:45,436 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46170, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46886, PETRI_PLACES=635, PETRI_TRANSITIONS=956} [2021-03-11 23:00:45,436 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 591 predicate places. [2021-03-11 23:00:45,436 INFO L480 AbstractCegarLoop]: Abstraction has has 635 places, 956 transitions, 46886 flow [2021-03-11 23:00:45,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:45,437 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:00:45,437 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:00:45,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-11 23:00:45,437 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:00:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:00:45,437 INFO L82 PathProgramCache]: Analyzing trace with hash -209440608, now seen corresponding path program 133 times [2021-03-11 23:00:45,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:00:45,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076266853] [2021-03-11 23:00:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:00:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:00:45,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:45,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:00:45,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:45,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:00:45,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:00:45,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:00:45,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:00:45,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:00:45,462 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 23:00:45,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 23:00:45,474 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 23:00:45,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 23:00:45,490 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:00:45,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:00:45,511 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:00:45,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:00:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:00:45,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076266853] [2021-03-11 23:00:45,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:00:45,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:00:45,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398993323] [2021-03-11 23:00:45,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:00:45,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:00:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:00:45,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:00:45,531 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:00:45,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 956 transitions, 46886 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:45,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:00:45,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:00:45,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:49,581 INFO L129 PetriNetUnfolder]: 473/8344 cut-off events. [2021-03-11 23:00:49,582 INFO L130 PetriNetUnfolder]: For 457830/464858 co-relation queries the response was YES. [2021-03-11 23:00:49,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76835 conditions, 8344 events. 473/8344 cut-off events. For 457830/464858 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 144943 event pairs, 349 based on Foata normal form. 64/7980 useless extension candidates. Maximal degree in co-relation 76656. Up to 1485 conditions per place. [2021-03-11 23:00:49,783 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 514 selfloop transitions, 433 changer transitions 2/963 dead transitions. [2021-03-11 23:00:49,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 963 transitions, 48838 flow [2021-03-11 23:00:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:49,784 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:49,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:49,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:49,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:49,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:49,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:49,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:49,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:49,785 INFO L185 Difference]: Start difference. First operand has 635 places, 956 transitions, 46886 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:49,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 963 transitions, 48838 flow [2021-03-11 23:00:54,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 963 transitions, 48104 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 23:00:54,368 INFO L241 Difference]: Finished difference. Result has 638 places, 954 transitions, 46879 flow [2021-03-11 23:00:54,368 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46162, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46879, PETRI_PLACES=638, PETRI_TRANSITIONS=954} [2021-03-11 23:00:54,368 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 594 predicate places. [2021-03-11 23:00:54,368 INFO L480 AbstractCegarLoop]: Abstraction has has 638 places, 954 transitions, 46879 flow [2021-03-11 23:00:54,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:54,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:00:54,369 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:00:54,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-11 23:00:54,369 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:00:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:00:54,369 INFO L82 PathProgramCache]: Analyzing trace with hash 373843244, now seen corresponding path program 134 times [2021-03-11 23:00:54,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:00:54,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898150148] [2021-03-11 23:00:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:00:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:00:54,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:54,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:00:54,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:00:54,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:00:54,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:00:54,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:00:54,386 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:00:54,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:00:54,394 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 23:00:54,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 23:00:54,415 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 23:00:54,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 23:00:54,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:00:54,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:00:54,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:00:54,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:00:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:00:54,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898150148] [2021-03-11 23:00:54,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:00:54,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:00:54,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984721562] [2021-03-11 23:00:54,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:00:54,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:00:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:00:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:00:54,473 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:00:54,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 954 transitions, 46879 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:54,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:00:54,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:00:54,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:00:58,438 INFO L129 PetriNetUnfolder]: 473/8338 cut-off events. [2021-03-11 23:00:58,438 INFO L130 PetriNetUnfolder]: For 457359/464420 co-relation queries the response was YES. [2021-03-11 23:00:58,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76860 conditions, 8338 events. 473/8338 cut-off events. For 457359/464420 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 144955 event pairs, 349 based on Foata normal form. 64/7993 useless extension candidates. Maximal degree in co-relation 76681. Up to 1485 conditions per place. [2021-03-11 23:00:58,526 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 513 selfloop transitions, 432 changer transitions 2/961 dead transitions. [2021-03-11 23:00:58,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 961 transitions, 48827 flow [2021-03-11 23:00:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:00:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:00:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:00:58,527 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:00:58,527 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:00:58,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:00:58,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:00:58,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:00:58,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:58,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:58,528 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:00:58,528 INFO L185 Difference]: Start difference. First operand has 638 places, 954 transitions, 46879 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:00:58,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 961 transitions, 48827 flow [2021-03-11 23:01:03,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 961 transitions, 47991 flow, removed 18 selfloop flow, removed 6 redundant places. [2021-03-11 23:01:03,272 INFO L241 Difference]: Finished difference. Result has 640 places, 952 transitions, 46784 flow [2021-03-11 23:01:03,272 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46053, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46784, PETRI_PLACES=640, PETRI_TRANSITIONS=952} [2021-03-11 23:01:03,272 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 596 predicate places. [2021-03-11 23:01:03,272 INFO L480 AbstractCegarLoop]: Abstraction has has 640 places, 952 transitions, 46784 flow [2021-03-11 23:01:03,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:03,273 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:01:03,273 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:01:03,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-11 23:01:03,273 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:01:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:01:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash 363340140, now seen corresponding path program 135 times [2021-03-11 23:01:03,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:01:03,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352789458] [2021-03-11 23:01:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:01:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:01:03,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:03,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:01:03,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:01:03,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:01:03,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:01:03,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:01:03,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:01:03,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 23:01:03,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 23:01:03,315 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 23:01:03,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 23:01:03,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:01:03,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:01:03,353 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:01:03,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:01:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:01:03,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352789458] [2021-03-11 23:01:03,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:01:03,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:01:03,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798200221] [2021-03-11 23:01:03,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:01:03,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:01:03,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:01:03,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:01:03,375 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:01:03,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 952 transitions, 46784 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:03,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:01:03,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:01:03,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:01:07,599 INFO L129 PetriNetUnfolder]: 473/8330 cut-off events. [2021-03-11 23:01:07,599 INFO L130 PetriNetUnfolder]: For 453999/461120 co-relation queries the response was YES. [2021-03-11 23:01:07,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76819 conditions, 8330 events. 473/8330 cut-off events. For 453999/461120 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 144669 event pairs, 349 based on Foata normal form. 64/7969 useless extension candidates. Maximal degree in co-relation 76641. Up to 1485 conditions per place. [2021-03-11 23:01:07,674 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 420 changer transitions 1/959 dead transitions. [2021-03-11 23:01:07,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 959 transitions, 48728 flow [2021-03-11 23:01:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:01:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:01:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:01:07,675 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:01:07,675 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:01:07,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:01:07,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:01:07,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:01:07,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:07,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:07,676 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:07,676 INFO L185 Difference]: Start difference. First operand has 640 places, 952 transitions, 46784 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:01:07,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 959 transitions, 48728 flow [2021-03-11 23:01:12,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 959 transitions, 47731 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-11 23:01:12,220 INFO L241 Difference]: Finished difference. Result has 641 places, 951 transitions, 46558 flow [2021-03-11 23:01:12,220 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45797, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=952, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46558, PETRI_PLACES=641, PETRI_TRANSITIONS=951} [2021-03-11 23:01:12,220 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 597 predicate places. [2021-03-11 23:01:12,220 INFO L480 AbstractCegarLoop]: Abstraction has has 641 places, 951 transitions, 46558 flow [2021-03-11 23:01:12,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:12,220 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:01:12,220 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:01:12,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-11 23:01:12,220 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:01:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:01:12,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1439051296, now seen corresponding path program 136 times [2021-03-11 23:01:12,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:01:12,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764214880] [2021-03-11 23:01:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:01:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:01:12,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:12,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:01:12,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:12,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:01:12,233 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 23:01:12,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 23:01:12,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 23:01:12,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 23:01:12,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 23:01:12,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 23:01:12,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 23:01:12,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 23:01:12,276 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:01:12,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:01:12,334 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:01:12,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:01:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:01:12,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764214880] [2021-03-11 23:01:12,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:01:12,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:01:12,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286948789] [2021-03-11 23:01:12,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:01:12,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:01:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:01:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:01:12,355 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:01:12,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 951 transitions, 46558 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:12,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:01:12,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:01:12,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:01:16,451 INFO L129 PetriNetUnfolder]: 473/8324 cut-off events. [2021-03-11 23:01:16,451 INFO L130 PetriNetUnfolder]: For 452537/459595 co-relation queries the response was YES. [2021-03-11 23:01:16,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76499 conditions, 8324 events. 473/8324 cut-off events. For 452537/459595 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 144575 event pairs, 349 based on Foata normal form. 64/7962 useless extension candidates. Maximal degree in co-relation 76321. Up to 1485 conditions per place. [2021-03-11 23:01:16,542 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 522 selfloop transitions, 420 changer transitions 2/958 dead transitions. [2021-03-11 23:01:16,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 958 transitions, 48500 flow [2021-03-11 23:01:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:01:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:01:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:01:16,548 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:01:16,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:01:16,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:01:16,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:01:16,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:01:16,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:16,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:16,549 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:16,549 INFO L185 Difference]: Start difference. First operand has 641 places, 951 transitions, 46558 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:01:16,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 958 transitions, 48500 flow [2021-03-11 23:01:21,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 958 transitions, 47740 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 23:01:21,256 INFO L241 Difference]: Finished difference. Result has 644 places, 949 transitions, 46492 flow [2021-03-11 23:01:21,257 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45808, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46492, PETRI_PLACES=644, PETRI_TRANSITIONS=949} [2021-03-11 23:01:21,257 INFO L335 CegarLoopForPetriNet]: 44 programPoint places, 600 predicate places. [2021-03-11 23:01:21,257 INFO L480 AbstractCegarLoop]: Abstraction has has 644 places, 949 transitions, 46492 flow [2021-03-11 23:01:21,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:21,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:01:21,257 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:01:21,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-11 23:01:21,257 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 23:01:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:01:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1523039048, now seen corresponding path program 137 times [2021-03-11 23:01:21,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:01:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501929949] [2021-03-11 23:01:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:01:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:01:21,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:21,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:01:21,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:21,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 23:01:21,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:01:21,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 23:01:21,274 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 23:01:21,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 23:01:21,288 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 23:01:21,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 23:01:21,300 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 23:01:21,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 23:01:21,318 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 23:01:21,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 23:01:21,341 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 23:01:21,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 23:01:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:01:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501929949] [2021-03-11 23:01:21,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:01:21,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 23:01:21,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428778006] [2021-03-11 23:01:21,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 23:01:21,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:01:21,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 23:01:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 23:01:21,361 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-11 23:01:21,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 949 transitions, 46492 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:21,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:01:21,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-11 23:01:21,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:01:25,424 INFO L129 PetriNetUnfolder]: 473/8341 cut-off events. [2021-03-11 23:01:25,424 INFO L130 PetriNetUnfolder]: For 450799/457855 co-relation queries the response was YES. [2021-03-11 23:01:25,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76539 conditions, 8341 events. 473/8341 cut-off events. For 450799/457855 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 145039 event pairs, 260 based on Foata normal form. 80/7984 useless extension candidates. Maximal degree in co-relation 76361. Up to 1735 conditions per place. [2021-03-11 23:01:25,501 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 542 selfloop transitions, 450 changer transitions 1/1007 dead transitions. [2021-03-11 23:01:25,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 1007 transitions, 51001 flow [2021-03-11 23:01:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 23:01:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 23:01:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-11 23:01:25,502 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-11 23:01:25,502 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-11 23:01:25,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-11 23:01:25,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:01:25,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-11 23:01:25,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:25,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:25,503 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:01:25,503 INFO L185 Difference]: Start difference. First operand has 644 places, 949 transitions, 46492 flow. Second operand 9 states and 674 transitions. [2021-03-11 23:01:25,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 1007 transitions, 51001 flow Received shutdown request... [2021-03-11 23:01:26,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-11 23:01:26,463 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 23:01:26,465 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 23:01:26,465 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:01:26 BasicIcfg [2021-03-11 23:01:26,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 23:01:26,465 INFO L168 Benchmark]: Toolchain (without parser) took 860014.09 ms. Allocated memory was 337.6 MB in the beginning and 6.2 GB in the end (delta: 5.9 GB). Free memory was 318.2 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 16.0 GB. [2021-03-11 23:01:26,465 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 337.6 MB. Free memory was 319.2 MB in the beginning and 319.2 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 23:01:26,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.67 ms. Allocated memory is still 337.6 MB. Free memory was 317.7 MB in the beginning and 316.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 23:01:26,466 INFO L168 Benchmark]: Boogie Preprocessor took 10.84 ms. Allocated memory is still 337.6 MB. Free memory was 316.2 MB in the beginning and 315.3 MB in the end (delta: 921.8 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 23:01:26,466 INFO L168 Benchmark]: RCFGBuilder took 172.76 ms. Allocated memory is still 337.6 MB. Free memory was 315.3 MB in the beginning and 304.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 23:01:26,466 INFO L168 Benchmark]: TraceAbstraction took 859806.83 ms. Allocated memory was 337.6 MB in the beginning and 6.2 GB in the end (delta: 5.9 GB). Free memory was 303.7 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 16.0 GB. [2021-03-11 23:01:26,466 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 0.09 ms. Allocated memory is still 337.6 MB. Free memory was 319.2 MB in the beginning and 319.2 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.67 ms. Allocated memory is still 337.6 MB. Free memory was 317.7 MB in the beginning and 316.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.84 ms. Allocated memory is still 337.6 MB. Free memory was 316.2 MB in the beginning and 315.3 MB in the end (delta: 921.8 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 172.76 ms. Allocated memory is still 337.6 MB. Free memory was 315.3 MB in the beginning and 304.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 859806.83 ms. Allocated memory was 337.6 MB in the beginning and 6.2 GB in the end (delta: 5.9 GB). Free memory was 303.7 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 111.0ms, 51 PlacesBefore, 44 PlacesAfterwards, 71 TransitionsBefore, 64 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 4368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4368, positive: 4368, positive conditional: 0, positive unconditional: 4368, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 702, positive: 702, positive conditional: 0, positive unconditional: 702, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 702, positive: 702, positive conditional: 0, positive unconditional: 702, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4368, positive: 3666, positive conditional: 0, positive unconditional: 3666, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 702, unknown conditional: 0, unknown unconditional: 702] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 315, Positive conditional cache size: 0, Positive unconditional cache size: 315, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 21.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 859701.3ms, OverallIterations: 143, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 843842.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 248.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2897 SDtfs, 5031 SDslu, 3046 SDs, 0 SdLazy, 5108 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3304.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1251 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 16356.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47830occurred in iteration=124, InterpolantAutomatonStates: 1242, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.1ms SsaConstructionTime, 131.8ms SatisfiabilityAnalysisTime, 14929.0ms InterpolantComputationTime, 3146 NumberOfCodeBlocks, 3146 NumberOfCodeBlocksAsserted, 143 NumberOfCheckSat, 3003 ConstructedInterpolants, 0 QuantifiedInterpolants, 85529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 143 InterpolantComputations, 143 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown