/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 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 00:11:45,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 00:11:45,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 00:11:45,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 00:11:45,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 00:11:45,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 00:11:45,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 00:11:45,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 00:11:45,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 00:11:45,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 00:11:45,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 00:11:45,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 00:11:45,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 00:11:45,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 00:11:45,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 00:11:45,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 00:11:45,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 00:11:45,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 00:11:45,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 00:11:45,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 00:11:45,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 00:11:45,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 00:11:45,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 00:11:45,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 00:11:45,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 00:11:45,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 00:11:45,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 00:11:45,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 00:11:45,593 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 [2021-06-11 00:11:45,628 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 00:11:45,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 00:11:45,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 00:11:45,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 00:11:45,631 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 00:11:45,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 00:11:45,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 00:11:45,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 00:11:45,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 00:11:45,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 00:11:45,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 00:11:45,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 00:11:45,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 00:11:45,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 00:11:45,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 00:11:45,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 00:11:45,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 00:11:45,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 00:11:45,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 00:11:45,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 00:11:45,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 00:11:45,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 00:11:45,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 00:11:45,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 00:11:45,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 00:11:45,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 00:11:45,955 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 00:11:45,956 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 00:11:45,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-06-11 00:11:45,957 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-06-11 00:11:45,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 00:11:45,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 00:11:45,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 00:11:45,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 00:11:45,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 00:11:46,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 00:11:46,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 00:11:46,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 00:11:46,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 00:11:46,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... [2021-06-11 00:11:46,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 00:11:46,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 00:11:46,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 00:11:46,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 00:11:46,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 00:11:46,103 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 00:11:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 00:11:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 00:11:46,104 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 00:11:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 00:11:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 00:11:46,104 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 00:11:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 00:11:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 00:11:46,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 00:11:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 00:11:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 00:11:46,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 00:11:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 00:11:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 00:11:46,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 00:11:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 00:11:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 00:11:46,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 00:11:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 00:11:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 00:11:46,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 00:11:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 00:11:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 00:11:46,108 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 00:11:46,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 00:11:46,261 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 00:11:46,263 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 12:11:46 BoogieIcfgContainer [2021-06-11 00:11:46,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 00:11:46,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 00:11:46,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 00:11:46,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 00:11:46,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:11:45" (1/2) ... [2021-06-11 00:11:46,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49480ddf and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 12:11:46, skipping insertion in model container [2021-06-11 00:11:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 12:11:46" (2/2) ... [2021-06-11 00:11:46,269 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-06-11 00:11:46,274 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 00:11:46,277 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 00:11:46,278 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 00:11:46,400 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-06-11 00:11:46,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-06-11 00:11:46,459 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 00:11:46,459 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 00:11:46,459 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 00:11:46,460 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 00:11:46,460 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 00:11:46,460 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 00:11:46,460 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 00:11:46,460 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 00:11:46,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-06-11 00:11:46,645 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-06-11 00:11:46,646 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-06-11 00:11:46,653 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. [2021-06-11 00:11:46,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-06-11 00:11:46,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-06-11 00:11:46,665 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 00:11:46,680 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 71 transitions, 310 flow [2021-06-11 00:11:46,688 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 71 transitions, 310 flow [2021-06-11 00:11:46,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions, 310 flow [2021-06-11 00:11:46,745 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2021-06-11 00:11:46,745 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-06-11 00:11:46,748 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. [2021-06-11 00:11:46,757 INFO L151 LiptonReduction]: Number of co-enabled transitions 1260 [2021-06-11 00:11:46,942 INFO L163 LiptonReduction]: Checked pairs total: 357 [2021-06-11 00:11:46,942 INFO L165 LiptonReduction]: Total number of compositions: 7 [2021-06-11 00:11:46,944 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 280 [2021-06-11 00:11:46,999 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2021-06-11 00:11:46,999 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-06-11 00:11:47,000 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,000 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,001 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]=== [2021-06-11 00:11:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,008 INFO L82 PathProgramCache]: Analyzing trace with hash 792718600, now seen corresponding path program 1 times [2021-06-11 00:11:47,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303475635] [2021-06-11 00:11:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:11:47,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:47,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303475635] [2021-06-11 00:11:47,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:47,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:11:47,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276280158] [2021-06-11 00:11:47,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:11:47,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:11:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:11:47,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-06-11 00:11:47,201 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) [2021-06-11 00:11:47,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:47,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-06-11 00:11:47,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:47,249 INFO L129 PetriNetUnfolder]: 135/220 cut-off events. [2021-06-11 00:11:47,249 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-06-11 00:11:47,250 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. [2021-06-11 00:11:47,252 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 2 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2021-06-11 00:11:47,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 277 flow [2021-06-11 00:11:47,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:11:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:11:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-11 00:11:47,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-06-11 00:11:47,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:47,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,275 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) [2021-06-11 00:11:47,280 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) [2021-06-11 00:11:47,281 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) [2021-06-11 00:11:47,283 INFO L185 Difference]: Start difference. First operand has 44 places, 64 transitions, 296 flow. Second operand 3 states and 245 transitions. [2021-06-11 00:11:47,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 277 flow [2021-06-11 00:11:47,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 59 transitions, 175 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-06-11 00:11:47,293 INFO L241 Difference]: Finished difference. Result has 32 places, 59 transitions, 171 flow [2021-06-11 00:11:47,295 INFO L326 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} [2021-06-11 00:11:47,296 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2021-06-11 00:11:47,296 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 59 transitions, 171 flow [2021-06-11 00:11:47,296 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) [2021-06-11 00:11:47,296 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 00:11:47,298 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]=== [2021-06-11 00:11:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,299 INFO L82 PathProgramCache]: Analyzing trace with hash -814701548, now seen corresponding path program 1 times [2021-06-11 00:11:47,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352205008] [2021-06-11 00:11:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:11:47,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:47,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352205008] [2021-06-11 00:11:47,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:47,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:11:47,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757455115] [2021-06-11 00:11:47,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:11:47,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:47,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:11:47,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:11:47,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-06-11 00:11:47,364 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) [2021-06-11 00:11:47,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:47,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-06-11 00:11:47,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:47,387 INFO L129 PetriNetUnfolder]: 130/214 cut-off events. [2021-06-11 00:11:47,387 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-06-11 00:11:47,387 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 721 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. [2021-06-11 00:11:47,389 INFO L132 encePairwiseOnDemand]: 85/87 looper letters, 6 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2021-06-11 00:11:47,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 182 flow [2021-06-11 00:11:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:11:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:11:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-11 00:11:47,391 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-06-11 00:11:47,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:47,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,392 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) [2021-06-11 00:11:47,393 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) [2021-06-11 00:11:47,393 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) [2021-06-11 00:11:47,394 INFO L185 Difference]: Start difference. First operand has 32 places, 59 transitions, 171 flow. Second operand 3 states and 245 transitions. [2021-06-11 00:11:47,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 182 flow [2021-06-11 00:11:47,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 00:11:47,396 INFO L241 Difference]: Finished difference. Result has 33 places, 58 transitions, 169 flow [2021-06-11 00:11:47,396 INFO L326 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} [2021-06-11 00:11:47,396 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2021-06-11 00:11:47,396 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 58 transitions, 169 flow [2021-06-11 00:11:47,397 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) [2021-06-11 00:11:47,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,397 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 00:11:47,397 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]=== [2021-06-11 00:11:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1618123062, now seen corresponding path program 1 times [2021-06-11 00:11:47,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256737033] [2021-06-11 00:11:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:11:47,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:47,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256737033] [2021-06-11 00:11:47,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:47,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:11:47,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115403388] [2021-06-11 00:11:47,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:11:47,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:47,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:11:47,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:11:47,431 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-06-11 00:11:47,432 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) [2021-06-11 00:11:47,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:47,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-06-11 00:11:47,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:47,463 INFO L129 PetriNetUnfolder]: 106/184 cut-off events. [2021-06-11 00:11:47,463 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-11 00:11:47,463 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 642 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. [2021-06-11 00:11:47,465 INFO L132 encePairwiseOnDemand]: 84/87 looper letters, 5 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2021-06-11 00:11:47,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 175 flow [2021-06-11 00:11:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:11:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:11:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-11 00:11:47,470 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-06-11 00:11:47,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:47,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,472 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) [2021-06-11 00:11:47,474 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) [2021-06-11 00:11:47,475 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) [2021-06-11 00:11:47,476 INFO L185 Difference]: Start difference. First operand has 33 places, 58 transitions, 169 flow. Second operand 3 states and 245 transitions. [2021-06-11 00:11:47,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 175 flow [2021-06-11 00:11:47,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 00:11:47,479 INFO L241 Difference]: Finished difference. Result has 34 places, 56 transitions, 164 flow [2021-06-11 00:11:47,479 INFO L326 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} [2021-06-11 00:11:47,479 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2021-06-11 00:11:47,479 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 56 transitions, 164 flow [2021-06-11 00:11:47,480 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) [2021-06-11 00:11:47,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 00:11:47,480 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]=== [2021-06-11 00:11:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1847729876, now seen corresponding path program 1 times [2021-06-11 00:11:47,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560783747] [2021-06-11 00:11:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:11:47,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:47,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560783747] [2021-06-11 00:11:47,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:47,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:11:47,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672709109] [2021-06-11 00:11:47,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:11:47,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:47,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:11:47,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:11:47,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-06-11 00:11:47,524 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) [2021-06-11 00:11:47,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:47,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-06-11 00:11:47,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:47,543 INFO L129 PetriNetUnfolder]: 41/94 cut-off events. [2021-06-11 00:11:47,543 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-06-11 00:11:47,544 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 255 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. [2021-06-11 00:11:47,544 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 3 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-06-11 00:11:47,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 160 flow [2021-06-11 00:11:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:11:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:11:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-11 00:11:47,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-06-11 00:11:47,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:47,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,547 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) [2021-06-11 00:11:47,548 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) [2021-06-11 00:11:47,549 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) [2021-06-11 00:11:47,549 INFO L185 Difference]: Start difference. First operand has 34 places, 56 transitions, 164 flow. Second operand 3 states and 245 transitions. [2021-06-11 00:11:47,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 160 flow [2021-06-11 00:11:47,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 00:11:47,553 INFO L241 Difference]: Finished difference. Result has 35 places, 52 transitions, 153 flow [2021-06-11 00:11:47,553 INFO L326 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} [2021-06-11 00:11:47,556 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2021-06-11 00:11:47,556 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 52 transitions, 153 flow [2021-06-11 00:11:47,556 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) [2021-06-11 00:11:47,556 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,561 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 00:11:47,561 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]=== [2021-06-11 00:11:47,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1199705006, now seen corresponding path program 1 times [2021-06-11 00:11:47,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146515762] [2021-06-11 00:11:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:11:47,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:47,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146515762] [2021-06-11 00:11:47,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:47,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:11:47,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077477900] [2021-06-11 00:11:47,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:11:47,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:47,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:11:47,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:11:47,594 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-06-11 00:11:47,594 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) [2021-06-11 00:11:47,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:47,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-06-11 00:11:47,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:47,611 INFO L129 PetriNetUnfolder]: 21/64 cut-off events. [2021-06-11 00:11:47,611 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-06-11 00:11:47,612 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 144 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. [2021-06-11 00:11:47,612 INFO L132 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-06-11 00:11:47,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 154 flow [2021-06-11 00:11:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:11:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:11:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-11 00:11:47,614 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-06-11 00:11:47,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:47,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,615 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) [2021-06-11 00:11:47,616 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) [2021-06-11 00:11:47,616 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) [2021-06-11 00:11:47,616 INFO L185 Difference]: Start difference. First operand has 35 places, 52 transitions, 153 flow. Second operand 3 states and 245 transitions. [2021-06-11 00:11:47,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 154 flow [2021-06-11 00:11:47,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 00:11:47,620 INFO L241 Difference]: Finished difference. Result has 36 places, 49 transitions, 145 flow [2021-06-11 00:11:47,620 INFO L326 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} [2021-06-11 00:11:47,620 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2021-06-11 00:11:47,621 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 49 transitions, 145 flow [2021-06-11 00:11:47,621 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) [2021-06-11 00:11:47,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 00:11:47,621 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]=== [2021-06-11 00:11:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1754835470, now seen corresponding path program 1 times [2021-06-11 00:11:47,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521638023] [2021-06-11 00:11:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:11:47,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:47,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521638023] [2021-06-11 00:11:47,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:47,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:11:47,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21063552] [2021-06-11 00:11:47,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:11:47,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:47,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:11:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:11:47,664 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-06-11 00:11:47,664 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) [2021-06-11 00:11:47,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:47,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-06-11 00:11:47,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:47,695 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-11 00:11:47,696 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-11 00:11:47,696 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 11 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. [2021-06-11 00:11:47,696 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-06-11 00:11:47,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 22 transitions, 68 flow [2021-06-11 00:11:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:11:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:11:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-11 00:11:47,698 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-06-11 00:11:47,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:47,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-11 00:11:47,699 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) [2021-06-11 00:11:47,699 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) [2021-06-11 00:11:47,700 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) [2021-06-11 00:11:47,700 INFO L185 Difference]: Start difference. First operand has 36 places, 49 transitions, 145 flow. Second operand 3 states and 245 transitions. [2021-06-11 00:11:47,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 22 transitions, 68 flow [2021-06-11 00:11:47,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 22 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 00:11:47,701 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 65 flow [2021-06-11 00:11:47,701 INFO L326 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} [2021-06-11 00:11:47,701 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2021-06-11 00:11:47,701 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 65 flow [2021-06-11 00:11:47,702 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) [2021-06-11 00:11:47,702 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:47,702 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:47,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 00:11:47,702 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]=== [2021-06-11 00:11:47,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:47,702 INFO L82 PathProgramCache]: Analyzing trace with hash 976181548, now seen corresponding path program 1 times [2021-06-11 00:11:47,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:47,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262831627] [2021-06-11 00:11:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:47,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:47,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:47,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:47,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:47,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:47,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:47,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:11:47,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:11:47,914 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:11:47,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:11:47,943 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:11:47,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:11:47,977 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:47,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:48,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262831627] [2021-06-11 00:11:48,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:48,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:48,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707010811] [2021-06-11 00:11:48,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:48,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:48,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:48,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:48,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:48,018 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) [2021-06-11 00:11:48,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:48,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:48,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:48,195 INFO L129 PetriNetUnfolder]: 387/724 cut-off events. [2021-06-11 00:11:48,195 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 00:11:48,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 724 events. 387/724 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4118 event pairs, 129 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 1315. Up to 225 conditions per place. [2021-06-11 00:11:48,201 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 27 selfloop transitions, 6 changer transitions 1/48 dead transitions. [2021-06-11 00:11:48,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 185 flow [2021-06-11 00:11:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:48,204 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:48,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:48,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:48,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:48,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:48,207 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) [2021-06-11 00:11:48,208 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) [2021-06-11 00:11:48,208 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) [2021-06-11 00:11:48,209 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 65 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:48,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 185 flow [2021-06-11 00:11:48,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 00:11:48,211 INFO L241 Difference]: Finished difference. Result has 51 places, 27 transitions, 111 flow [2021-06-11 00:11:48,211 INFO L326 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} [2021-06-11 00:11:48,211 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2021-06-11 00:11:48,211 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 27 transitions, 111 flow [2021-06-11 00:11:48,212 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) [2021-06-11 00:11:48,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:48,212 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:48,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 00:11:48,212 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]=== [2021-06-11 00:11:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:48,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2007826080, now seen corresponding path program 2 times [2021-06-11 00:11:48,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:48,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796036367] [2021-06-11 00:11:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:48,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:48,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:48,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:48,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:48,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:48,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:48,321 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:48,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:48,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:48,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:48,354 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:11:48,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:11:48,380 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:48,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:48,411 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:48,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:48,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796036367] [2021-06-11 00:11:48,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:48,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:48,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395277200] [2021-06-11 00:11:48,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:48,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:48,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:48,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:48,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:48,443 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) [2021-06-11 00:11:48,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:48,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:48,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:48,638 INFO L129 PetriNetUnfolder]: 453/1033 cut-off events. [2021-06-11 00:11:48,638 INFO L130 PetriNetUnfolder]: For 1007/1012 co-relation queries the response was YES. [2021-06-11 00:11:48,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 1033 events. 453/1033 cut-off events. For 1007/1012 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6897 event pairs, 147 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 2622. Up to 297 conditions per place. [2021-06-11 00:11:48,648 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 38 selfloop transitions, 9 changer transitions 2/63 dead transitions. [2021-06-11 00:11:48,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 379 flow [2021-06-11 00:11:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:48,651 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:48,651 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:48,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:48,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:48,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:48,653 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) [2021-06-11 00:11:48,655 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) [2021-06-11 00:11:48,655 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) [2021-06-11 00:11:48,655 INFO L185 Difference]: Start difference. First operand has 51 places, 27 transitions, 111 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:48,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 379 flow [2021-06-11 00:11:48,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:48,659 INFO L241 Difference]: Finished difference. Result has 63 places, 35 transitions, 201 flow [2021-06-11 00:11:48,659 INFO L326 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2021-06-11 00:11:48,659 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2021-06-11 00:11:48,659 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 201 flow [2021-06-11 00:11:48,660 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) [2021-06-11 00:11:48,660 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:48,660 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:48,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 00:11:48,660 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]=== [2021-06-11 00:11:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash -326948672, now seen corresponding path program 3 times [2021-06-11 00:11:48,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:48,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31772868] [2021-06-11 00:11:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:48,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:48,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:48,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:48,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:48,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:48,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:48,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:48,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:48,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:48,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:48,751 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:11:48,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:11:48,792 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:11:48,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:11:48,832 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:48,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31772868] [2021-06-11 00:11:48,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:48,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:48,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95915340] [2021-06-11 00:11:48,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:48,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:48,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:48,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:48,879 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:48,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 201 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) [2021-06-11 00:11:48,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:48,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:48,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:49,092 INFO L129 PetriNetUnfolder]: 535/1413 cut-off events. [2021-06-11 00:11:49,092 INFO L130 PetriNetUnfolder]: For 3422/3547 co-relation queries the response was YES. [2021-06-11 00:11:49,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 1413 events. 535/1413 cut-off events. For 3422/3547 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11134 event pairs, 164 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 4501. Up to 408 conditions per place. [2021-06-11 00:11:49,105 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 49 selfloop transitions, 18 changer transitions 1/82 dead transitions. [2021-06-11 00:11:49,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 663 flow [2021-06-11 00:11:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:49,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:49,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:49,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:49,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:49,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:49,110 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) [2021-06-11 00:11:49,111 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) [2021-06-11 00:11:49,111 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) [2021-06-11 00:11:49,111 INFO L185 Difference]: Start difference. First operand has 63 places, 35 transitions, 201 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:49,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 663 flow [2021-06-11 00:11:49,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 634 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:49,119 INFO L241 Difference]: Finished difference. Result has 75 places, 50 transitions, 411 flow [2021-06-11 00:11:49,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=411, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2021-06-11 00:11:49,120 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2021-06-11 00:11:49,120 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 411 flow [2021-06-11 00:11:49,120 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) [2021-06-11 00:11:49,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:49,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:49,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 00:11:49,121 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]=== [2021-06-11 00:11:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:49,121 INFO L82 PathProgramCache]: Analyzing trace with hash -762664422, now seen corresponding path program 4 times [2021-06-11 00:11:49,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:49,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215076604] [2021-06-11 00:11:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:49,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:49,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:49,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:49,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:49,175 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:49,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:49,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:11:49,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:11:49,220 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:11:49,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:11:49,257 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:49,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:49,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215076604] [2021-06-11 00:11:49,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:49,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:49,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992310869] [2021-06-11 00:11:49,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:49,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:49,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:49,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:49,290 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:49,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 411 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) [2021-06-11 00:11:49,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:49,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:49,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:49,570 INFO L129 PetriNetUnfolder]: 640/1951 cut-off events. [2021-06-11 00:11:49,570 INFO L130 PetriNetUnfolder]: For 8582/8735 co-relation queries the response was YES. [2021-06-11 00:11:49,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1951 events. 640/1951 cut-off events. For 8582/8735 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 18283 event pairs, 193 based on Foata normal form. 1/1874 useless extension candidates. Maximal degree in co-relation 7263. Up to 552 conditions per place. [2021-06-11 00:11:49,591 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 67 selfloop transitions, 32 changer transitions 1/114 dead transitions. [2021-06-11 00:11:49,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 1234 flow [2021-06-11 00:11:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:49,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:49,594 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:49,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:49,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:49,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:49,596 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) [2021-06-11 00:11:49,598 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) [2021-06-11 00:11:49,598 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) [2021-06-11 00:11:49,598 INFO L185 Difference]: Start difference. First operand has 75 places, 50 transitions, 411 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:49,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 1234 flow [2021-06-11 00:11:49,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 1206 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:49,619 INFO L241 Difference]: Finished difference. Result has 87 places, 77 transitions, 871 flow [2021-06-11 00:11:49,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2021-06-11 00:11:49,620 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2021-06-11 00:11:49,620 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 871 flow [2021-06-11 00:11:49,620 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) [2021-06-11 00:11:49,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:49,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:49,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 00:11:49,621 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]=== [2021-06-11 00:11:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:49,621 INFO L82 PathProgramCache]: Analyzing trace with hash -121259338, now seen corresponding path program 5 times [2021-06-11 00:11:49,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:49,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873718114] [2021-06-11 00:11:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:49,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:49,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:49,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:49,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:49,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 00:11:49,730 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:49,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:49,751 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:11:49,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:11:49,780 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:49,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:49,818 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:49,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:49,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873718114] [2021-06-11 00:11:49,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:49,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:49,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821845651] [2021-06-11 00:11:49,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:49,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:49,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:49,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:49,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:49,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 871 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) [2021-06-11 00:11:49,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:49,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:49,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:50,293 INFO L129 PetriNetUnfolder]: 780/2943 cut-off events. [2021-06-11 00:11:50,293 INFO L130 PetriNetUnfolder]: For 18048/18351 co-relation queries the response was YES. [2021-06-11 00:11:50,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 2943 events. 780/2943 cut-off events. For 18048/18351 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 32929 event pairs, 261 based on Foata normal form. 1/2844 useless extension candidates. Maximal degree in co-relation 11790. Up to 800 conditions per place. [2021-06-11 00:11:50,330 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 83 selfloop transitions, 43 changer transitions 1/141 dead transitions. [2021-06-11 00:11:50,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 1874 flow [2021-06-11 00:11:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:50,333 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:50,333 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:50,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:50,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:50,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:50,335 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) [2021-06-11 00:11:50,336 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) [2021-06-11 00:11:50,336 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) [2021-06-11 00:11:50,336 INFO L185 Difference]: Start difference. First operand has 87 places, 77 transitions, 871 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:50,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 1874 flow [2021-06-11 00:11:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1844 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:50,394 INFO L241 Difference]: Finished difference. Result has 99 places, 96 transitions, 1294 flow [2021-06-11 00:11:50,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2021-06-11 00:11:50,395 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2021-06-11 00:11:50,395 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 1294 flow [2021-06-11 00:11:50,395 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) [2021-06-11 00:11:50,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:50,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:50,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 00:11:50,396 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]=== [2021-06-11 00:11:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1992160978, now seen corresponding path program 6 times [2021-06-11 00:11:50,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:50,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463185044] [2021-06-11 00:11:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:50,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:50,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:50,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:11:50,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:11:50,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:50,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:50,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:11:50,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:11:50,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:11:50,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:11:50,533 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:50,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:50,570 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:50,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:50,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463185044] [2021-06-11 00:11:50,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:50,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:50,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324445621] [2021-06-11 00:11:50,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:50,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:50,601 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:50,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 1294 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) [2021-06-11 00:11:50,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:50,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:50,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:51,097 INFO L129 PetriNetUnfolder]: 839/3202 cut-off events. [2021-06-11 00:11:51,097 INFO L130 PetriNetUnfolder]: For 28552/29372 co-relation queries the response was YES. [2021-06-11 00:11:51,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 3202 events. 839/3202 cut-off events. For 28552/29372 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 36590 event pairs, 276 based on Foata normal form. 1/3086 useless extension candidates. Maximal degree in co-relation 14683. Up to 897 conditions per place. [2021-06-11 00:11:51,139 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 76 selfloop transitions, 55 changer transitions 2/147 dead transitions. [2021-06-11 00:11:51,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 2208 flow [2021-06-11 00:11:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:51,141 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:51,141 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:51,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:51,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:51,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:51,143 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) [2021-06-11 00:11:51,144 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) [2021-06-11 00:11:51,145 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) [2021-06-11 00:11:51,145 INFO L185 Difference]: Start difference. First operand has 99 places, 96 transitions, 1294 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 2208 flow [2021-06-11 00:11:51,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 2130 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:51,209 INFO L241 Difference]: Finished difference. Result has 111 places, 119 transitions, 1824 flow [2021-06-11 00:11:51,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2021-06-11 00:11:51,209 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2021-06-11 00:11:51,209 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 1824 flow [2021-06-11 00:11:51,210 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) [2021-06-11 00:11:51,210 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:51,210 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:51,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 00:11:51,210 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]=== [2021-06-11 00:11:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1257254258, now seen corresponding path program 7 times [2021-06-11 00:11:51,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:51,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580879200] [2021-06-11 00:11:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:51,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:51,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:51,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:51,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:51,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:51,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:51,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:51,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 00:11:51,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 00:11:51,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 00:11:51,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:11:51,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:11:51,327 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:51,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:51,358 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:51,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:51,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580879200] [2021-06-11 00:11:51,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:51,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:51,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79406771] [2021-06-11 00:11:51,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:51,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:51,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:51,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:51,389 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:51,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 1824 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) [2021-06-11 00:11:51,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:51,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:51,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:51,994 INFO L129 PetriNetUnfolder]: 849/3417 cut-off events. [2021-06-11 00:11:51,994 INFO L130 PetriNetUnfolder]: For 41834/43363 co-relation queries the response was YES. [2021-06-11 00:11:52,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17594 conditions, 3417 events. 849/3417 cut-off events. For 41834/43363 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 39762 event pairs, 377 based on Foata normal form. 4/3302 useless extension candidates. Maximal degree in co-relation 17549. Up to 903 conditions per place. [2021-06-11 00:11:52,041 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 110 selfloop transitions, 62 changer transitions 2/188 dead transitions. [2021-06-11 00:11:52,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 188 transitions, 3153 flow [2021-06-11 00:11:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:52,043 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:52,043 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:52,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:52,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:52,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:52,045 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) [2021-06-11 00:11:52,046 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) [2021-06-11 00:11:52,047 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) [2021-06-11 00:11:52,047 INFO L185 Difference]: Start difference. First operand has 111 places, 119 transitions, 1824 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:52,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 188 transitions, 3153 flow [2021-06-11 00:11:52,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 188 transitions, 2999 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-06-11 00:11:52,145 INFO L241 Difference]: Finished difference. Result has 122 places, 137 transitions, 2229 flow [2021-06-11 00:11:52,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2229, PETRI_PLACES=122, PETRI_TRANSITIONS=137} [2021-06-11 00:11:52,145 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2021-06-11 00:11:52,145 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 137 transitions, 2229 flow [2021-06-11 00:11:52,146 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) [2021-06-11 00:11:52,146 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:52,146 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:52,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 00:11:52,146 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]=== [2021-06-11 00:11:52,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash -575836876, now seen corresponding path program 8 times [2021-06-11 00:11:52,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:52,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841610422] [2021-06-11 00:11:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:52,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:52,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:52,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:52,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:52,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:52,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:52,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:52,197 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:52,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:52,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:11:52,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:11:52,246 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:11:52,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:11:52,280 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:52,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:52,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841610422] [2021-06-11 00:11:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:52,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:52,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768621059] [2021-06-11 00:11:52,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:52,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:52,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:52,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:52,313 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:52,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 137 transitions, 2229 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) [2021-06-11 00:11:52,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:52,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:52,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:52,995 INFO L129 PetriNetUnfolder]: 852/3844 cut-off events. [2021-06-11 00:11:52,995 INFO L130 PetriNetUnfolder]: For 53608/56365 co-relation queries the response was YES. [2021-06-11 00:11:53,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20609 conditions, 3844 events. 852/3844 cut-off events. For 53608/56365 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 47513 event pairs, 345 based on Foata normal form. 6/3691 useless extension candidates. Maximal degree in co-relation 20559. Up to 1012 conditions per place. [2021-06-11 00:11:53,044 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 125 selfloop transitions, 80 changer transitions 1/220 dead transitions. [2021-06-11 00:11:53,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 220 transitions, 3893 flow [2021-06-11 00:11:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:53,046 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:53,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:53,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:53,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:53,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:53,048 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) [2021-06-11 00:11:53,050 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) [2021-06-11 00:11:53,050 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) [2021-06-11 00:11:53,050 INFO L185 Difference]: Start difference. First operand has 122 places, 137 transitions, 2229 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:53,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 220 transitions, 3893 flow [2021-06-11 00:11:53,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 220 transitions, 3749 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:53,159 INFO L241 Difference]: Finished difference. Result has 134 places, 169 transitions, 2991 flow [2021-06-11 00:11:53,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2991, PETRI_PLACES=134, PETRI_TRANSITIONS=169} [2021-06-11 00:11:53,160 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 90 predicate places. [2021-06-11 00:11:53,160 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 169 transitions, 2991 flow [2021-06-11 00:11:53,160 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) [2021-06-11 00:11:53,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:53,160 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:53,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 00:11:53,161 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]=== [2021-06-11 00:11:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:53,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1030299834, now seen corresponding path program 9 times [2021-06-11 00:11:53,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:53,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256127320] [2021-06-11 00:11:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:53,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:53,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:53,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:53,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:53,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:53,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:53,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:53,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:53,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:53,238 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:11:53,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:11:53,267 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:53,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:53,302 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:53,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:53,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256127320] [2021-06-11 00:11:53,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:53,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:53,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056473709] [2021-06-11 00:11:53,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:53,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:53,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:53,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:53,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:53,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 169 transitions, 2991 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) [2021-06-11 00:11:53,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:53,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:53,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:54,193 INFO L129 PetriNetUnfolder]: 843/4435 cut-off events. [2021-06-11 00:11:54,194 INFO L130 PetriNetUnfolder]: For 72449/74976 co-relation queries the response was YES. [2021-06-11 00:11:54,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24699 conditions, 4435 events. 843/4435 cut-off events. For 72449/74976 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 58911 event pairs, 337 based on Foata normal form. 12/4258 useless extension candidates. Maximal degree in co-relation 24643. Up to 1069 conditions per place. [2021-06-11 00:11:54,250 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 155 selfloop transitions, 96 changer transitions 1/266 dead transitions. [2021-06-11 00:11:54,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 266 transitions, 5123 flow [2021-06-11 00:11:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:54,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:54,252 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:54,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:54,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:54,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:54,254 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) [2021-06-11 00:11:54,256 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) [2021-06-11 00:11:54,256 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) [2021-06-11 00:11:54,256 INFO L185 Difference]: Start difference. First operand has 134 places, 169 transitions, 2991 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:54,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 266 transitions, 5123 flow [2021-06-11 00:11:54,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 266 transitions, 4915 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:54,461 INFO L241 Difference]: Finished difference. Result has 146 places, 213 transitions, 4043 flow [2021-06-11 00:11:54,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4043, PETRI_PLACES=146, PETRI_TRANSITIONS=213} [2021-06-11 00:11:54,462 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2021-06-11 00:11:54,462 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 213 transitions, 4043 flow [2021-06-11 00:11:54,462 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) [2021-06-11 00:11:54,462 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:54,462 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:54,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 00:11:54,463 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]=== [2021-06-11 00:11:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:54,463 INFO L82 PathProgramCache]: Analyzing trace with hash -407352836, now seen corresponding path program 10 times [2021-06-11 00:11:54,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:54,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107631528] [2021-06-11 00:11:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:54,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:54,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:54,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:54,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:54,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:54,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:54,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:54,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 00:11:54,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:11:54,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:11:54,590 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:11:54,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:11:54,616 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:54,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:54,650 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:54,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:54,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107631528] [2021-06-11 00:11:54,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:54,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:54,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460952721] [2021-06-11 00:11:54,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:54,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:54,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:54,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:54,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:54,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 213 transitions, 4043 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) [2021-06-11 00:11:54,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:54,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:54,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:55,573 INFO L129 PetriNetUnfolder]: 823/4619 cut-off events. [2021-06-11 00:11:55,573 INFO L130 PetriNetUnfolder]: For 90064/92699 co-relation queries the response was YES. [2021-06-11 00:11:55,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27481 conditions, 4619 events. 823/4619 cut-off events. For 90064/92699 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 62790 event pairs, 340 based on Foata normal form. 15/4453 useless extension candidates. Maximal degree in co-relation 27419. Up to 1087 conditions per place. [2021-06-11 00:11:55,701 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 118 changer transitions 3/306 dead transitions. [2021-06-11 00:11:55,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 306 transitions, 6335 flow [2021-06-11 00:11:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:55,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:55,707 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:55,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:55,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:55,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:55,709 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) [2021-06-11 00:11:55,711 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) [2021-06-11 00:11:55,711 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) [2021-06-11 00:11:55,712 INFO L185 Difference]: Start difference. First operand has 146 places, 213 transitions, 4043 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:55,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 306 transitions, 6335 flow [2021-06-11 00:11:55,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 306 transitions, 6127 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:55,958 INFO L241 Difference]: Finished difference. Result has 158 places, 237 transitions, 4841 flow [2021-06-11 00:11:55,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3891, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4841, PETRI_PLACES=158, PETRI_TRANSITIONS=237} [2021-06-11 00:11:55,959 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 114 predicate places. [2021-06-11 00:11:55,959 INFO L480 AbstractCegarLoop]: Abstraction has has 158 places, 237 transitions, 4841 flow [2021-06-11 00:11:55,960 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) [2021-06-11 00:11:55,960 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:55,960 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:55,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 00:11:55,960 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]=== [2021-06-11 00:11:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash -808104420, now seen corresponding path program 11 times [2021-06-11 00:11:55,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:55,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273017954] [2021-06-11 00:11:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:56,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:56,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:56,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:56,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:56,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:11:56,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:11:56,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:56,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:56,043 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:11:56,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:11:56,076 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:11:56,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:11:56,121 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:11:56,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:11:56,159 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:56,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:56,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273017954] [2021-06-11 00:11:56,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:56,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:56,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623937500] [2021-06-11 00:11:56,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:56,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:56,193 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:56,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 237 transitions, 4841 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) [2021-06-11 00:11:56,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:56,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:56,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:57,156 INFO L129 PetriNetUnfolder]: 806/4709 cut-off events. [2021-06-11 00:11:57,157 INFO L130 PetriNetUnfolder]: For 110621/115107 co-relation queries the response was YES. [2021-06-11 00:11:57,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29881 conditions, 4709 events. 806/4709 cut-off events. For 110621/115107 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 64747 event pairs, 415 based on Foata normal form. 20/4544 useless extension candidates. Maximal degree in co-relation 29813. Up to 983 conditions per place. [2021-06-11 00:11:57,201 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 163 selfloop transitions, 129 changer transitions 2/308 dead transitions. [2021-06-11 00:11:57,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 308 transitions, 6847 flow [2021-06-11 00:11:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:57,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:57,203 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:57,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:57,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:57,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:57,204 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) [2021-06-11 00:11:57,206 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) [2021-06-11 00:11:57,206 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) [2021-06-11 00:11:57,206 INFO L185 Difference]: Start difference. First operand has 158 places, 237 transitions, 4841 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:57,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 308 transitions, 6847 flow [2021-06-11 00:11:57,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 308 transitions, 6635 flow, removed 86 selfloop flow, removed 2 redundant places. [2021-06-11 00:11:57,633 INFO L241 Difference]: Finished difference. Result has 170 places, 251 transitions, 5501 flow [2021-06-11 00:11:57,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5501, PETRI_PLACES=170, PETRI_TRANSITIONS=251} [2021-06-11 00:11:57,634 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2021-06-11 00:11:57,634 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 251 transitions, 5501 flow [2021-06-11 00:11:57,634 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) [2021-06-11 00:11:57,635 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:57,635 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:57,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 00:11:57,635 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]=== [2021-06-11 00:11:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:57,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1473127532, now seen corresponding path program 12 times [2021-06-11 00:11:57,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:57,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248350771] [2021-06-11 00:11:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:57,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:57,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:57,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:57,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:57,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:57,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:11:57,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:11:57,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:11:57,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:11:57,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:11:57,721 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:11:57,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:11:57,753 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:57,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:57,790 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:57,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:57,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248350771] [2021-06-11 00:11:57,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:57,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:57,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152650604] [2021-06-11 00:11:57,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:57,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:57,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:57,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:57,821 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:57,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 251 transitions, 5501 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) [2021-06-11 00:11:57,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:57,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:57,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:11:58,941 INFO L129 PetriNetUnfolder]: 783/5096 cut-off events. [2021-06-11 00:11:58,941 INFO L130 PetriNetUnfolder]: For 129061/133488 co-relation queries the response was YES. [2021-06-11 00:11:58,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32631 conditions, 5096 events. 783/5096 cut-off events. For 129061/133488 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 72769 event pairs, 292 based on Foata normal form. 32/4870 useless extension candidates. Maximal degree in co-relation 32557. Up to 1106 conditions per place. [2021-06-11 00:11:59,006 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 182 selfloop transitions, 152 changer transitions 1/349 dead transitions. [2021-06-11 00:11:59,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 349 transitions, 8369 flow [2021-06-11 00:11:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:11:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:11:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:11:59,008 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:11:59,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:11:59,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:11:59,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:11:59,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:11:59,010 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) [2021-06-11 00:11:59,011 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) [2021-06-11 00:11:59,012 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) [2021-06-11 00:11:59,012 INFO L185 Difference]: Start difference. First operand has 170 places, 251 transitions, 5501 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:11:59,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 349 transitions, 8369 flow [2021-06-11 00:11:59,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 349 transitions, 8114 flow, removed 106 selfloop flow, removed 3 redundant places. [2021-06-11 00:11:59,549 INFO L241 Difference]: Finished difference. Result has 180 places, 282 transitions, 6572 flow [2021-06-11 00:11:59,549 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6572, PETRI_PLACES=180, PETRI_TRANSITIONS=282} [2021-06-11 00:11:59,549 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 136 predicate places. [2021-06-11 00:11:59,550 INFO L480 AbstractCegarLoop]: Abstraction has has 180 places, 282 transitions, 6572 flow [2021-06-11 00:11:59,550 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) [2021-06-11 00:11:59,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:11:59,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:11:59,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 00:11:59,550 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]=== [2021-06-11 00:11:59,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:11:59,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1237463442, now seen corresponding path program 13 times [2021-06-11 00:11:59,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:11:59,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888320191] [2021-06-11 00:11:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:11:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:11:59,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:59,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:11:59,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:11:59,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:11:59,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:11:59,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:11:59,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:11:59,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:11:59,599 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:11:59,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:11:59,628 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:11:59,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:11:59,667 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:11:59,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:11:59,703 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:11:59,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:11:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:11:59,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888320191] [2021-06-11 00:11:59,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:11:59,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:11:59,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593593743] [2021-06-11 00:11:59,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:11:59,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:11:59,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:11:59,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:11:59,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:11:59,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 282 transitions, 6572 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) [2021-06-11 00:11:59,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:11:59,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:11:59,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:00,814 INFO L129 PetriNetUnfolder]: 777/5002 cut-off events. [2021-06-11 00:12:00,814 INFO L130 PetriNetUnfolder]: For 138838/143557 co-relation queries the response was YES. [2021-06-11 00:12:00,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 5002 events. 777/5002 cut-off events. For 138838/143557 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 71023 event pairs, 442 based on Foata normal form. 23/4815 useless extension candidates. Maximal degree in co-relation 33406. Up to 982 conditions per place. [2021-06-11 00:12:00,859 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 165 changer transitions 1/354 dead transitions. [2021-06-11 00:12:00,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 354 transitions, 8885 flow [2021-06-11 00:12:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:00,861 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:00,861 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:00,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:00,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:00,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:00,863 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) [2021-06-11 00:12:00,865 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) [2021-06-11 00:12:00,865 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) [2021-06-11 00:12:00,865 INFO L185 Difference]: Start difference. First operand has 180 places, 282 transitions, 6572 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:00,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 354 transitions, 8885 flow [2021-06-11 00:12:01,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 354 transitions, 8502 flow, removed 107 selfloop flow, removed 3 redundant places. [2021-06-11 00:12:01,221 INFO L241 Difference]: Finished difference. Result has 190 places, 295 transitions, 7135 flow [2021-06-11 00:12:01,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7135, PETRI_PLACES=190, PETRI_TRANSITIONS=295} [2021-06-11 00:12:01,221 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 146 predicate places. [2021-06-11 00:12:01,221 INFO L480 AbstractCegarLoop]: Abstraction has has 190 places, 295 transitions, 7135 flow [2021-06-11 00:12:01,222 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) [2021-06-11 00:12:01,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:01,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:01,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 00:12:01,222 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]=== [2021-06-11 00:12:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:01,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2007168412, now seen corresponding path program 14 times [2021-06-11 00:12:01,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:01,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7300812] [2021-06-11 00:12:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:01,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:01,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:01,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:01,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:01,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:01,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:12:01,267 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:01,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:01,282 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:01,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:01,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:01,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:01,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:01,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:01,362 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:01,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:01,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7300812] [2021-06-11 00:12:01,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:01,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:01,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796059166] [2021-06-11 00:12:01,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:01,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:01,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:01,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:01,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:01,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 295 transitions, 7135 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) [2021-06-11 00:12:01,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:01,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:01,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:02,587 INFO L129 PetriNetUnfolder]: 781/5121 cut-off events. [2021-06-11 00:12:02,587 INFO L130 PetriNetUnfolder]: For 142660/147849 co-relation queries the response was YES. [2021-06-11 00:12:02,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34015 conditions, 5121 events. 781/5121 cut-off events. For 142660/147849 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 73195 event pairs, 431 based on Foata normal form. 34/4921 useless extension candidates. Maximal degree in co-relation 33932. Up to 1106 conditions per place. [2021-06-11 00:12:02,627 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 157 selfloop transitions, 193 changer transitions 1/365 dead transitions. [2021-06-11 00:12:02,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 365 transitions, 9614 flow [2021-06-11 00:12:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:02,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:02,630 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:02,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:02,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:02,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:02,632 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) [2021-06-11 00:12:02,633 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) [2021-06-11 00:12:02,633 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) [2021-06-11 00:12:02,633 INFO L185 Difference]: Start difference. First operand has 190 places, 295 transitions, 7135 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:02,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 365 transitions, 9614 flow [2021-06-11 00:12:03,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 365 transitions, 9247 flow, removed 76 selfloop flow, removed 3 redundant places. [2021-06-11 00:12:03,162 INFO L241 Difference]: Finished difference. Result has 200 places, 335 transitions, 8647 flow [2021-06-11 00:12:03,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8647, PETRI_PLACES=200, PETRI_TRANSITIONS=335} [2021-06-11 00:12:03,162 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2021-06-11 00:12:03,163 INFO L480 AbstractCegarLoop]: Abstraction has has 200 places, 335 transitions, 8647 flow [2021-06-11 00:12:03,163 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) [2021-06-11 00:12:03,163 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:03,163 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:03,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 00:12:03,163 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]=== [2021-06-11 00:12:03,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:03,164 INFO L82 PathProgramCache]: Analyzing trace with hash 123343342, now seen corresponding path program 15 times [2021-06-11 00:12:03,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:03,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471915163] [2021-06-11 00:12:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:03,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:03,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:03,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:03,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:03,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:03,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:03,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:12:03,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:12:03,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:03,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:03,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:12:03,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:12:03,252 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:03,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:03,282 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:03,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471915163] [2021-06-11 00:12:03,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:03,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:03,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347815612] [2021-06-11 00:12:03,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:03,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:03,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:03,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 335 transitions, 8647 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) [2021-06-11 00:12:03,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:03,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:03,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:04,842 INFO L129 PetriNetUnfolder]: 774/5250 cut-off events. [2021-06-11 00:12:04,842 INFO L130 PetriNetUnfolder]: For 152098/156880 co-relation queries the response was YES. [2021-06-11 00:12:04,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35182 conditions, 5250 events. 774/5250 cut-off events. For 152098/156880 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 76148 event pairs, 531 based on Foata normal form. 30/5021 useless extension candidates. Maximal degree in co-relation 35094. Up to 982 conditions per place. [2021-06-11 00:12:04,884 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 150 selfloop transitions, 231 changer transitions 1/396 dead transitions. [2021-06-11 00:12:04,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 396 transitions, 10843 flow [2021-06-11 00:12:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:04,886 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:04,886 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:04,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:04,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:04,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:04,888 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) [2021-06-11 00:12:04,889 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) [2021-06-11 00:12:04,889 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) [2021-06-11 00:12:04,889 INFO L185 Difference]: Start difference. First operand has 200 places, 335 transitions, 8647 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:04,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 396 transitions, 10843 flow [2021-06-11 00:12:05,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 396 transitions, 10530 flow, removed 72 selfloop flow, removed 3 redundant places. [2021-06-11 00:12:05,411 INFO L241 Difference]: Finished difference. Result has 209 places, 361 transitions, 9708 flow [2021-06-11 00:12:05,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8406, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9708, PETRI_PLACES=209, PETRI_TRANSITIONS=361} [2021-06-11 00:12:05,412 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2021-06-11 00:12:05,412 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 361 transitions, 9708 flow [2021-06-11 00:12:05,412 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) [2021-06-11 00:12:05,412 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:05,412 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:05,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-11 00:12:05,412 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]=== [2021-06-11 00:12:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2117955118, now seen corresponding path program 16 times [2021-06-11 00:12:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:05,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103075771] [2021-06-11 00:12:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:05,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:05,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:05,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:05,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:05,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:05,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:05,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:05,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:05,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:05,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:05,494 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:05,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:05,518 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:05,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:05,546 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:05,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:05,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103075771] [2021-06-11 00:12:05,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:05,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:05,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40664726] [2021-06-11 00:12:05,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:05,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:05,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:05,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:05,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 361 transitions, 9708 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) [2021-06-11 00:12:05,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:05,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:05,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:06,844 INFO L129 PetriNetUnfolder]: 763/5329 cut-off events. [2021-06-11 00:12:06,844 INFO L130 PetriNetUnfolder]: For 154412/160333 co-relation queries the response was YES. [2021-06-11 00:12:06,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35737 conditions, 5329 events. 763/5329 cut-off events. For 154412/160333 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 77522 event pairs, 461 based on Foata normal form. 40/5106 useless extension candidates. Maximal degree in co-relation 35645. Up to 1144 conditions per place. [2021-06-11 00:12:06,898 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 116 selfloop transitions, 280 changer transitions 4/414 dead transitions. [2021-06-11 00:12:06,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 414 transitions, 11717 flow [2021-06-11 00:12:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:06,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:06,900 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:06,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:06,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:06,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:06,901 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) [2021-06-11 00:12:06,902 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) [2021-06-11 00:12:06,902 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) [2021-06-11 00:12:06,903 INFO L185 Difference]: Start difference. First operand has 209 places, 361 transitions, 9708 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:06,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 414 transitions, 11717 flow [2021-06-11 00:12:07,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 414 transitions, 11149 flow, removed 95 selfloop flow, removed 4 redundant places. [2021-06-11 00:12:07,500 INFO L241 Difference]: Finished difference. Result has 218 places, 382 transitions, 10639 flow [2021-06-11 00:12:07,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=9200, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10639, PETRI_PLACES=218, PETRI_TRANSITIONS=382} [2021-06-11 00:12:07,501 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 174 predicate places. [2021-06-11 00:12:07,501 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 382 transitions, 10639 flow [2021-06-11 00:12:07,501 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) [2021-06-11 00:12:07,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:07,501 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:07,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-11 00:12:07,501 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]=== [2021-06-11 00:12:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2132336940, now seen corresponding path program 17 times [2021-06-11 00:12:07,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:07,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214976891] [2021-06-11 00:12:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:07,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:07,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:07,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:07,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:07,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:07,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:07,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:07,562 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:07,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:07,582 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:12:07,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:12:07,609 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:12:07,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:12:07,639 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:07,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:07,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214976891] [2021-06-11 00:12:07,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:07,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:07,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451860924] [2021-06-11 00:12:07,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:07,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:07,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:07,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:07,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:07,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 382 transitions, 10639 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) [2021-06-11 00:12:07,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:07,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:07,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:09,085 INFO L129 PetriNetUnfolder]: 756/5372 cut-off events. [2021-06-11 00:12:09,085 INFO L130 PetriNetUnfolder]: For 160127/166007 co-relation queries the response was YES. [2021-06-11 00:12:09,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36292 conditions, 5372 events. 756/5372 cut-off events. For 160127/166007 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 78536 event pairs, 458 based on Foata normal form. 44/5148 useless extension candidates. Maximal degree in co-relation 36195. Up to 1144 conditions per place. [2021-06-11 00:12:09,139 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 117 selfloop transitions, 285 changer transitions 1/417 dead transitions. [2021-06-11 00:12:09,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 417 transitions, 12220 flow [2021-06-11 00:12:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:09,140 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:09,140 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:09,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:09,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:09,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:09,142 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) [2021-06-11 00:12:09,143 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) [2021-06-11 00:12:09,143 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) [2021-06-11 00:12:09,143 INFO L185 Difference]: Start difference. First operand has 218 places, 382 transitions, 10639 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 417 transitions, 12220 flow [2021-06-11 00:12:09,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 417 transitions, 11882 flow, removed 60 selfloop flow, removed 4 redundant places. [2021-06-11 00:12:09,772 INFO L241 Difference]: Finished difference. Result has 226 places, 397 transitions, 11453 flow [2021-06-11 00:12:09,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10347, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11453, PETRI_PLACES=226, PETRI_TRANSITIONS=397} [2021-06-11 00:12:09,773 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2021-06-11 00:12:09,773 INFO L480 AbstractCegarLoop]: Abstraction has has 226 places, 397 transitions, 11453 flow [2021-06-11 00:12:09,773 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) [2021-06-11 00:12:09,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:09,773 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:09,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-11 00:12:09,774 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]=== [2021-06-11 00:12:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1431536288, now seen corresponding path program 18 times [2021-06-11 00:12:09,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:09,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852370214] [2021-06-11 00:12:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:09,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:09,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:09,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:09,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:09,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:09,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:09,814 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:09,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:09,828 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:12:09,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:12:09,848 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:09,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:09,873 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:09,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:09,907 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:09,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:09,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852370214] [2021-06-11 00:12:09,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:09,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:09,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569756271] [2021-06-11 00:12:09,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:09,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:09,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:09,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:09,936 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:09,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 397 transitions, 11453 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) [2021-06-11 00:12:09,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:09,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:09,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:11,254 INFO L129 PetriNetUnfolder]: 754/5373 cut-off events. [2021-06-11 00:12:11,255 INFO L130 PetriNetUnfolder]: For 163490/169378 co-relation queries the response was YES. [2021-06-11 00:12:11,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36845 conditions, 5373 events. 754/5373 cut-off events. For 163490/169378 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 78561 event pairs, 464 based on Foata normal form. 44/5149 useless extension candidates. Maximal degree in co-relation 36745. Up to 1144 conditions per place. [2021-06-11 00:12:11,309 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 98 selfloop transitions, 314 changer transitions 4/430 dead transitions. [2021-06-11 00:12:11,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 430 transitions, 13058 flow [2021-06-11 00:12:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:11,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:11,312 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:11,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:11,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:11,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:11,313 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) [2021-06-11 00:12:11,314 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) [2021-06-11 00:12:11,314 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) [2021-06-11 00:12:11,314 INFO L185 Difference]: Start difference. First operand has 226 places, 397 transitions, 11453 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:11,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 430 transitions, 13058 flow [2021-06-11 00:12:12,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 430 transitions, 12486 flow, removed 69 selfloop flow, removed 4 redundant places. [2021-06-11 00:12:12,023 INFO L241 Difference]: Finished difference. Result has 234 places, 401 transitions, 11879 flow [2021-06-11 00:12:12,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10931, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11879, PETRI_PLACES=234, PETRI_TRANSITIONS=401} [2021-06-11 00:12:12,024 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2021-06-11 00:12:12,024 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 401 transitions, 11879 flow [2021-06-11 00:12:12,024 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) [2021-06-11 00:12:12,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:12,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:12,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-11 00:12:12,024 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]=== [2021-06-11 00:12:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1108286522, now seen corresponding path program 19 times [2021-06-11 00:12:12,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:12,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824673130] [2021-06-11 00:12:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:12,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:12,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:12,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:12,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:12,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:12,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:12,072 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:12:12,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:12:12,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:12,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:12,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:12,128 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:12:12,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:12:12,168 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:12,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824673130] [2021-06-11 00:12:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:12,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416380999] [2021-06-11 00:12:12,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:12,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:12,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:12,204 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:12,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 401 transitions, 11879 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) [2021-06-11 00:12:12,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:12,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:12,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:13,695 INFO L129 PetriNetUnfolder]: 738/5496 cut-off events. [2021-06-11 00:12:13,695 INFO L130 PetriNetUnfolder]: For 170460/176348 co-relation queries the response was YES. [2021-06-11 00:12:13,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37976 conditions, 5496 events. 738/5496 cut-off events. For 170460/176348 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 81336 event pairs, 408 based on Foata normal form. 33/5244 useless extension candidates. Maximal degree in co-relation 37872. Up to 1023 conditions per place. [2021-06-11 00:12:13,750 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 230 selfloop transitions, 238 changer transitions 2/484 dead transitions. [2021-06-11 00:12:13,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 484 transitions, 15002 flow [2021-06-11 00:12:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:13,752 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:13,752 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:13,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:13,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:13,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:13,753 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) [2021-06-11 00:12:13,754 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) [2021-06-11 00:12:13,754 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) [2021-06-11 00:12:13,754 INFO L185 Difference]: Start difference. First operand has 234 places, 401 transitions, 11879 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:13,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 484 transitions, 15002 flow [2021-06-11 00:12:14,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 484 transitions, 14382 flow, removed 78 selfloop flow, removed 7 redundant places. [2021-06-11 00:12:14,428 INFO L241 Difference]: Finished difference. Result has 239 places, 437 transitions, 13152 flow [2021-06-11 00:12:14,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11370, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13152, PETRI_PLACES=239, PETRI_TRANSITIONS=437} [2021-06-11 00:12:14,428 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 195 predicate places. [2021-06-11 00:12:14,428 INFO L480 AbstractCegarLoop]: Abstraction has has 239 places, 437 transitions, 13152 flow [2021-06-11 00:12:14,429 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) [2021-06-11 00:12:14,429 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:14,429 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:14,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-11 00:12:14,429 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]=== [2021-06-11 00:12:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1548443452, now seen corresponding path program 20 times [2021-06-11 00:12:14,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:14,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443897686] [2021-06-11 00:12:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:14,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:14,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:14,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:14,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:14,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:14,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:14,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:14,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:14,478 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:12:14,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:12:14,498 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:12:14,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:12:14,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:14,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:14,558 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:14,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:14,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443897686] [2021-06-11 00:12:14,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:14,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:14,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751304264] [2021-06-11 00:12:14,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:14,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:14,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:14,592 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:14,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 437 transitions, 13152 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) [2021-06-11 00:12:14,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:14,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:14,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:16,187 INFO L129 PetriNetUnfolder]: 737/5516 cut-off events. [2021-06-11 00:12:16,187 INFO L130 PetriNetUnfolder]: For 162952/168367 co-relation queries the response was YES. [2021-06-11 00:12:16,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37327 conditions, 5516 events. 737/5516 cut-off events. For 162952/168367 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 81619 event pairs, 472 based on Foata normal form. 44/5275 useless extension candidates. Maximal degree in co-relation 37222. Up to 1144 conditions per place. [2021-06-11 00:12:16,233 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 86 selfloop transitions, 360 changer transitions 1/461 dead transitions. [2021-06-11 00:12:16,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 461 transitions, 14561 flow [2021-06-11 00:12:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:16,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:16,237 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:16,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:16,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:16,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:16,239 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) [2021-06-11 00:12:16,240 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) [2021-06-11 00:12:16,240 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) [2021-06-11 00:12:16,240 INFO L185 Difference]: Start difference. First operand has 239 places, 437 transitions, 13152 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:16,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 461 transitions, 14561 flow [2021-06-11 00:12:16,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 461 transitions, 14039 flow, removed 74 selfloop flow, removed 5 redundant places. [2021-06-11 00:12:16,872 INFO L241 Difference]: Finished difference. Result has 245 places, 442 transitions, 13638 flow [2021-06-11 00:12:16,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12650, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13638, PETRI_PLACES=245, PETRI_TRANSITIONS=442} [2021-06-11 00:12:16,873 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 201 predicate places. [2021-06-11 00:12:16,873 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 442 transitions, 13638 flow [2021-06-11 00:12:16,873 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) [2021-06-11 00:12:16,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:16,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:16,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-11 00:12:16,873 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]=== [2021-06-11 00:12:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:16,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1788476212, now seen corresponding path program 21 times [2021-06-11 00:12:16,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:16,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67128238] [2021-06-11 00:12:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:16,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:16,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:16,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:16,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:16,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:16,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:16,904 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:16,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:16,917 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:16,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:16,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:12:16,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:12:16,955 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:16,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:16,981 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:17,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67128238] [2021-06-11 00:12:17,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:17,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:17,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498407102] [2021-06-11 00:12:17,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:17,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:17,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:17,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:17,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 442 transitions, 13638 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) [2021-06-11 00:12:17,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:17,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:17,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:18,584 INFO L129 PetriNetUnfolder]: 727/5564 cut-off events. [2021-06-11 00:12:18,584 INFO L130 PetriNetUnfolder]: For 164332/169739 co-relation queries the response was YES. [2021-06-11 00:12:18,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37778 conditions, 5564 events. 727/5564 cut-off events. For 164332/169739 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 82792 event pairs, 461 based on Foata normal form. 44/5317 useless extension candidates. Maximal degree in co-relation 37671. Up to 1144 conditions per place. [2021-06-11 00:12:18,653 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 158 selfloop transitions, 296 changer transitions 1/469 dead transitions. [2021-06-11 00:12:18,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 469 transitions, 15124 flow [2021-06-11 00:12:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:18,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:18,655 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:18,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:18,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:18,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:18,657 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) [2021-06-11 00:12:18,657 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) [2021-06-11 00:12:18,658 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) [2021-06-11 00:12:18,658 INFO L185 Difference]: Start difference. First operand has 245 places, 442 transitions, 13638 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:18,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 469 transitions, 15124 flow [2021-06-11 00:12:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 469 transitions, 14475 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-06-11 00:12:19,515 INFO L241 Difference]: Finished difference. Result has 251 places, 446 transitions, 13767 flow [2021-06-11 00:12:19,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13006, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13767, PETRI_PLACES=251, PETRI_TRANSITIONS=446} [2021-06-11 00:12:19,516 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2021-06-11 00:12:19,516 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 446 transitions, 13767 flow [2021-06-11 00:12:19,516 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) [2021-06-11 00:12:19,516 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:19,516 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:19,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-11 00:12:19,516 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]=== [2021-06-11 00:12:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:19,516 INFO L82 PathProgramCache]: Analyzing trace with hash -95877172, now seen corresponding path program 22 times [2021-06-11 00:12:19,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:19,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644440707] [2021-06-11 00:12:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:19,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:19,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:19,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:19,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:19,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:19,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:19,548 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:19,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:19,560 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:19,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:19,577 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:19,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:19,605 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:19,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:19,631 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:19,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:19,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644440707] [2021-06-11 00:12:19,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:19,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:19,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465699543] [2021-06-11 00:12:19,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:19,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:19,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:19,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:19,655 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:19,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 446 transitions, 13767 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) [2021-06-11 00:12:19,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:19,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:19,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:21,150 INFO L129 PetriNetUnfolder]: 715/5616 cut-off events. [2021-06-11 00:12:21,150 INFO L130 PetriNetUnfolder]: For 167395/172802 co-relation queries the response was YES. [2021-06-11 00:12:21,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38166 conditions, 5616 events. 715/5616 cut-off events. For 167395/172802 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 84073 event pairs, 452 based on Foata normal form. 44/5361 useless extension candidates. Maximal degree in co-relation 38056. Up to 1144 conditions per place. [2021-06-11 00:12:21,198 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 305 changer transitions 2/492 dead transitions. [2021-06-11 00:12:21,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 492 transitions, 15913 flow [2021-06-11 00:12:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:21,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:21,200 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:21,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:21,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:21,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:21,200 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) [2021-06-11 00:12:21,201 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) [2021-06-11 00:12:21,201 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) [2021-06-11 00:12:21,201 INFO L185 Difference]: Start difference. First operand has 251 places, 446 transitions, 13767 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 492 transitions, 15913 flow [2021-06-11 00:12:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 492 transitions, 15301 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-06-11 00:12:21,884 INFO L241 Difference]: Finished difference. Result has 258 places, 468 transitions, 14643 flow [2021-06-11 00:12:21,885 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13178, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14643, PETRI_PLACES=258, PETRI_TRANSITIONS=468} [2021-06-11 00:12:21,885 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2021-06-11 00:12:21,885 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 468 transitions, 14643 flow [2021-06-11 00:12:21,885 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) [2021-06-11 00:12:21,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:21,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:21,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-11 00:12:21,885 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]=== [2021-06-11 00:12:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2031332696, now seen corresponding path program 23 times [2021-06-11 00:12:21,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:21,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8838488] [2021-06-11 00:12:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:21,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:21,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:21,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:21,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:21,906 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:21,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:21,916 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:21,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:21,929 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:21,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:21,946 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:12:21,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:12:21,968 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:21,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:21,996 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:21,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:22,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8838488] [2021-06-11 00:12:22,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:22,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:22,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191580793] [2021-06-11 00:12:22,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:22,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:22,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:22,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:22,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 468 transitions, 14643 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) [2021-06-11 00:12:22,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:22,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:22,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:23,568 INFO L129 PetriNetUnfolder]: 713/5617 cut-off events. [2021-06-11 00:12:23,568 INFO L130 PetriNetUnfolder]: For 171898/177434 co-relation queries the response was YES. [2021-06-11 00:12:23,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38535 conditions, 5617 events. 713/5617 cut-off events. For 171898/177434 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 84073 event pairs, 461 based on Foata normal form. 48/5370 useless extension candidates. Maximal degree in co-relation 38421. Up to 1144 conditions per place. [2021-06-11 00:12:23,634 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 166 selfloop transitions, 310 changer transitions 1/491 dead transitions. [2021-06-11 00:12:23,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 491 transitions, 16111 flow [2021-06-11 00:12:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:23,635 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:23,635 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:23,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:23,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:23,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:23,636 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) [2021-06-11 00:12:23,637 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) [2021-06-11 00:12:23,637 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) [2021-06-11 00:12:23,637 INFO L185 Difference]: Start difference. First operand has 258 places, 468 transitions, 14643 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:23,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 491 transitions, 16111 flow [2021-06-11 00:12:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 491 transitions, 15489 flow, removed 85 selfloop flow, removed 4 redundant places. [2021-06-11 00:12:24,587 INFO L241 Difference]: Finished difference. Result has 265 places, 473 transitions, 14903 flow [2021-06-11 00:12:24,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14067, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14903, PETRI_PLACES=265, PETRI_TRANSITIONS=473} [2021-06-11 00:12:24,587 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2021-06-11 00:12:24,588 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 473 transitions, 14903 flow [2021-06-11 00:12:24,588 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) [2021-06-11 00:12:24,588 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:24,588 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:24,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-11 00:12:24,588 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]=== [2021-06-11 00:12:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:24,589 INFO L82 PathProgramCache]: Analyzing trace with hash -521849848, now seen corresponding path program 24 times [2021-06-11 00:12:24,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:24,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642646815] [2021-06-11 00:12:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:24,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:24,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:24,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:24,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:24,612 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:24,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:24,620 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:24,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:24,633 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:12:24,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:12:24,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:24,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:24,682 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:24,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:24,722 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:24,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:24,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642646815] [2021-06-11 00:12:24,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:24,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:24,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132272958] [2021-06-11 00:12:24,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:24,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:24,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:24,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:24,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:24,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 473 transitions, 14903 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) [2021-06-11 00:12:24,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:24,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:24,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:26,514 INFO L129 PetriNetUnfolder]: 712/5616 cut-off events. [2021-06-11 00:12:26,515 INFO L130 PetriNetUnfolder]: For 171300/176836 co-relation queries the response was YES. [2021-06-11 00:12:26,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38596 conditions, 5616 events. 712/5616 cut-off events. For 171300/176836 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 84041 event pairs, 460 based on Foata normal form. 48/5368 useless extension candidates. Maximal degree in co-relation 38479. Up to 1144 conditions per place. [2021-06-11 00:12:26,733 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 108 selfloop transitions, 367 changer transitions 2/491 dead transitions. [2021-06-11 00:12:26,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 491 transitions, 16191 flow [2021-06-11 00:12:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:26,736 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:26,736 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:26,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:26,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:26,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:26,737 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) [2021-06-11 00:12:26,739 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) [2021-06-11 00:12:26,739 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) [2021-06-11 00:12:26,739 INFO L185 Difference]: Start difference. First operand has 265 places, 473 transitions, 14903 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:26,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 491 transitions, 16191 flow [2021-06-11 00:12:27,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 491 transitions, 15558 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-06-11 00:12:27,687 INFO L241 Difference]: Finished difference. Result has 270 places, 475 transitions, 15096 flow [2021-06-11 00:12:27,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14285, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15096, PETRI_PLACES=270, PETRI_TRANSITIONS=475} [2021-06-11 00:12:27,688 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2021-06-11 00:12:27,688 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 475 transitions, 15096 flow [2021-06-11 00:12:27,689 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) [2021-06-11 00:12:27,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:27,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:27,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-11 00:12:27,689 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]=== [2021-06-11 00:12:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1581125982, now seen corresponding path program 25 times [2021-06-11 00:12:27,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:27,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340582539] [2021-06-11 00:12:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:27,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:27,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:27,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:27,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:27,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:27,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:27,724 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:27,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:27,738 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:12:27,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:12:27,758 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:12:27,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:12:27,783 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:12:27,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:12:27,815 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:27,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:27,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340582539] [2021-06-11 00:12:27,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:27,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:27,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421506869] [2021-06-11 00:12:27,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:27,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:27,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:27,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:27,848 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:27,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 475 transitions, 15096 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) [2021-06-11 00:12:27,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:27,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:27,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:29,436 INFO L129 PetriNetUnfolder]: 712/5610 cut-off events. [2021-06-11 00:12:29,436 INFO L130 PetriNetUnfolder]: For 170989/176525 co-relation queries the response was YES. [2021-06-11 00:12:29,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 5610 events. 712/5610 cut-off events. For 170989/176525 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 83907 event pairs, 460 based on Foata normal form. 48/5363 useless extension candidates. Maximal degree in co-relation 38532. Up to 1144 conditions per place. [2021-06-11 00:12:29,499 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 99 selfloop transitions, 375 changer transitions 3/491 dead transitions. [2021-06-11 00:12:29,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 491 transitions, 16333 flow [2021-06-11 00:12:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:29,500 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:29,500 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:29,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:29,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:29,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:29,501 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) [2021-06-11 00:12:29,502 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) [2021-06-11 00:12:29,502 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) [2021-06-11 00:12:29,502 INFO L185 Difference]: Start difference. First operand has 270 places, 475 transitions, 15096 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:29,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 491 transitions, 16333 flow [2021-06-11 00:12:30,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 491 transitions, 15597 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-06-11 00:12:30,519 INFO L241 Difference]: Finished difference. Result has 273 places, 475 transitions, 15142 flow [2021-06-11 00:12:30,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14371, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15142, PETRI_PLACES=273, PETRI_TRANSITIONS=475} [2021-06-11 00:12:30,520 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2021-06-11 00:12:30,520 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 475 transitions, 15142 flow [2021-06-11 00:12:30,520 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) [2021-06-11 00:12:30,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:30,520 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:30,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-11 00:12:30,520 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]=== [2021-06-11 00:12:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash -819022606, now seen corresponding path program 26 times [2021-06-11 00:12:30,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:30,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731930699] [2021-06-11 00:12:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:30,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:30,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:30,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:30,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:30,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:30,551 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:30,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:30,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:30,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:30,580 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:12:30,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:12:30,603 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:30,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:30,632 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:30,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:30,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731930699] [2021-06-11 00:12:30,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:30,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:30,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210147885] [2021-06-11 00:12:30,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:30,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:30,663 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:30,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 475 transitions, 15142 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) [2021-06-11 00:12:30,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:30,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:30,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:32,370 INFO L129 PetriNetUnfolder]: 712/5602 cut-off events. [2021-06-11 00:12:32,371 INFO L130 PetriNetUnfolder]: For 171157/176693 co-relation queries the response was YES. [2021-06-11 00:12:32,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38616 conditions, 5602 events. 712/5602 cut-off events. For 171157/176693 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 83778 event pairs, 460 based on Foata normal form. 48/5356 useless extension candidates. Maximal degree in co-relation 38496. Up to 1144 conditions per place. [2021-06-11 00:12:32,434 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 153 selfloop transitions, 319 changer transitions 1/487 dead transitions. [2021-06-11 00:12:32,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 487 transitions, 16244 flow [2021-06-11 00:12:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:32,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:32,436 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:32,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:32,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:32,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:32,437 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) [2021-06-11 00:12:32,437 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) [2021-06-11 00:12:32,437 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) [2021-06-11 00:12:32,438 INFO L185 Difference]: Start difference. First operand has 273 places, 475 transitions, 15142 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:32,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 487 transitions, 16244 flow [2021-06-11 00:12:33,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 487 transitions, 15489 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-06-11 00:12:33,358 INFO L241 Difference]: Finished difference. Result has 273 places, 474 transitions, 15006 flow [2021-06-11 00:12:33,358 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14399, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15006, PETRI_PLACES=273, PETRI_TRANSITIONS=474} [2021-06-11 00:12:33,359 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2021-06-11 00:12:33,359 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 474 transitions, 15006 flow [2021-06-11 00:12:33,359 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) [2021-06-11 00:12:33,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:33,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:33,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-11 00:12:33,359 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]=== [2021-06-11 00:12:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash -596829574, now seen corresponding path program 27 times [2021-06-11 00:12:33,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:33,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36499274] [2021-06-11 00:12:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:33,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:33,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:33,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:33,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:33,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:33,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:33,390 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:33,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:33,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:33,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:33,423 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:12:33,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:12:33,464 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:33,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:33,490 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:33,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:33,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36499274] [2021-06-11 00:12:33,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:33,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:33,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048127154] [2021-06-11 00:12:33,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:33,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:33,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:33,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:33,523 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:33,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 474 transitions, 15006 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) [2021-06-11 00:12:33,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:33,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:33,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:35,149 INFO L129 PetriNetUnfolder]: 712/5598 cut-off events. [2021-06-11 00:12:35,149 INFO L130 PetriNetUnfolder]: For 169929/175465 co-relation queries the response was YES. [2021-06-11 00:12:35,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38520 conditions, 5598 events. 712/5598 cut-off events. For 169929/175465 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 83718 event pairs, 460 based on Foata normal form. 48/5353 useless extension candidates. Maximal degree in co-relation 38402. Up to 1144 conditions per place. [2021-06-11 00:12:35,208 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 162 selfloop transitions, 314 changer transitions 1/491 dead transitions. [2021-06-11 00:12:35,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 491 transitions, 16266 flow [2021-06-11 00:12:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:35,210 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:35,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:35,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:35,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:35,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:35,212 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) [2021-06-11 00:12:35,212 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) [2021-06-11 00:12:35,213 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) [2021-06-11 00:12:35,213 INFO L185 Difference]: Start difference. First operand has 273 places, 474 transitions, 15006 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:35,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 491 transitions, 16266 flow [2021-06-11 00:12:35,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 491 transitions, 15599 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-06-11 00:12:36,011 INFO L241 Difference]: Finished difference. Result has 277 places, 477 transitions, 15137 flow [2021-06-11 00:12:36,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14356, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15137, PETRI_PLACES=277, PETRI_TRANSITIONS=477} [2021-06-11 00:12:36,012 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2021-06-11 00:12:36,012 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 477 transitions, 15137 flow [2021-06-11 00:12:36,012 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) [2021-06-11 00:12:36,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:36,012 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:36,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-11 00:12:36,013 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]=== [2021-06-11 00:12:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:36,013 INFO L82 PathProgramCache]: Analyzing trace with hash -249139980, now seen corresponding path program 28 times [2021-06-11 00:12:36,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:36,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038886369] [2021-06-11 00:12:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:36,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:36,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:36,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:36,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:36,035 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:36,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:36,111 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:36,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:36,126 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:12:36,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:12:36,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:36,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:36,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:36,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:36,209 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:36,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:36,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038886369] [2021-06-11 00:12:36,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:36,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:36,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795008535] [2021-06-11 00:12:36,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:36,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:36,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:36,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:36,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:36,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 477 transitions, 15137 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) [2021-06-11 00:12:36,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:36,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:36,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:37,857 INFO L129 PetriNetUnfolder]: 712/5592 cut-off events. [2021-06-11 00:12:37,857 INFO L130 PetriNetUnfolder]: For 170355/175891 co-relation queries the response was YES. [2021-06-11 00:12:37,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38503 conditions, 5592 events. 712/5592 cut-off events. For 170355/175891 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 83527 event pairs, 460 based on Foata normal form. 48/5347 useless extension candidates. Maximal degree in co-relation 38383. Up to 1144 conditions per place. [2021-06-11 00:12:37,912 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 114 selfloop transitions, 367 changer transitions 2/497 dead transitions. [2021-06-11 00:12:37,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 497 transitions, 16550 flow [2021-06-11 00:12:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:37,914 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:37,914 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:37,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:37,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:37,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:37,915 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) [2021-06-11 00:12:37,915 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) [2021-06-11 00:12:37,916 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) [2021-06-11 00:12:37,916 INFO L185 Difference]: Start difference. First operand has 277 places, 477 transitions, 15137 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:37,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 497 transitions, 16550 flow [2021-06-11 00:12:38,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 497 transitions, 15949 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-11 00:12:38,704 INFO L241 Difference]: Finished difference. Result has 282 places, 480 transitions, 15486 flow [2021-06-11 00:12:38,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14552, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15486, PETRI_PLACES=282, PETRI_TRANSITIONS=480} [2021-06-11 00:12:38,705 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 238 predicate places. [2021-06-11 00:12:38,705 INFO L480 AbstractCegarLoop]: Abstraction has has 282 places, 480 transitions, 15486 flow [2021-06-11 00:12:38,706 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) [2021-06-11 00:12:38,706 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:38,706 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:38,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-11 00:12:38,706 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]=== [2021-06-11 00:12:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1046625360, now seen corresponding path program 29 times [2021-06-11 00:12:38,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:38,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397344076] [2021-06-11 00:12:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:38,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:38,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:38,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:38,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:38,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:38,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:38,738 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:38,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:38,751 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:38,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:38,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:12:38,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:12:38,790 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:38,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:38,817 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:38,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:38,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397344076] [2021-06-11 00:12:38,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:38,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:38,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9011512] [2021-06-11 00:12:38,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:38,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:38,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:38,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:38,849 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:38,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 480 transitions, 15486 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) [2021-06-11 00:12:38,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:38,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:38,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:40,647 INFO L129 PetriNetUnfolder]: 712/5586 cut-off events. [2021-06-11 00:12:40,647 INFO L130 PetriNetUnfolder]: For 171984/177520 co-relation queries the response was YES. [2021-06-11 00:12:40,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 5586 events. 712/5586 cut-off events. For 171984/177520 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 83497 event pairs, 460 based on Foata normal form. 48/5342 useless extension candidates. Maximal degree in co-relation 38529. Up to 1144 conditions per place. [2021-06-11 00:12:40,703 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 168 selfloop transitions, 312 changer transitions 2/496 dead transitions. [2021-06-11 00:12:40,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 496 transitions, 16728 flow [2021-06-11 00:12:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:40,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:40,704 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:40,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:40,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:40,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:40,705 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) [2021-06-11 00:12:40,706 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) [2021-06-11 00:12:40,706 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) [2021-06-11 00:12:40,706 INFO L185 Difference]: Start difference. First operand has 282 places, 480 transitions, 15486 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:40,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 496 transitions, 16728 flow [2021-06-11 00:12:41,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 496 transitions, 16064 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-06-11 00:12:41,549 INFO L241 Difference]: Finished difference. Result has 285 places, 483 transitions, 15566 flow [2021-06-11 00:12:41,549 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14837, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15566, PETRI_PLACES=285, PETRI_TRANSITIONS=483} [2021-06-11 00:12:41,550 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2021-06-11 00:12:41,550 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 483 transitions, 15566 flow [2021-06-11 00:12:41,550 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) [2021-06-11 00:12:41,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:41,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:41,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-11 00:12:41,550 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]=== [2021-06-11 00:12:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1985761560, now seen corresponding path program 30 times [2021-06-11 00:12:41,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:41,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218606134] [2021-06-11 00:12:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:41,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:41,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:41,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:41,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:41,577 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:41,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:41,587 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:41,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:41,603 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:12:41,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:12:41,624 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:41,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:41,653 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:12:41,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:12:41,689 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:41,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:41,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218606134] [2021-06-11 00:12:41,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:41,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:41,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099244506] [2021-06-11 00:12:41,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:41,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:41,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:41,720 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:41,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 483 transitions, 15566 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) [2021-06-11 00:12:41,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:41,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:41,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:43,300 INFO L129 PetriNetUnfolder]: 712/5529 cut-off events. [2021-06-11 00:12:43,300 INFO L130 PetriNetUnfolder]: For 173743/177856 co-relation queries the response was YES. [2021-06-11 00:12:43,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38645 conditions, 5529 events. 712/5529 cut-off events. For 173743/177856 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 82471 event pairs, 544 based on Foata normal form. 48/5283 useless extension candidates. Maximal degree in co-relation 38523. Up to 1144 conditions per place. [2021-06-11 00:12:43,364 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 112 selfloop transitions, 370 changer transitions 2/498 dead transitions. [2021-06-11 00:12:43,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 498 transitions, 16815 flow [2021-06-11 00:12:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:43,366 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:43,366 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:43,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:43,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:43,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:43,367 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) [2021-06-11 00:12:43,368 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) [2021-06-11 00:12:43,368 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) [2021-06-11 00:12:43,368 INFO L185 Difference]: Start difference. First operand has 285 places, 483 transitions, 15566 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:43,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 498 transitions, 16815 flow [2021-06-11 00:12:44,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 498 transitions, 16178 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-11 00:12:44,384 INFO L241 Difference]: Finished difference. Result has 288 places, 485 transitions, 15788 flow [2021-06-11 00:12:44,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14947, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15788, PETRI_PLACES=288, PETRI_TRANSITIONS=485} [2021-06-11 00:12:44,385 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2021-06-11 00:12:44,385 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 485 transitions, 15788 flow [2021-06-11 00:12:44,385 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) [2021-06-11 00:12:44,385 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:44,385 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:44,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-11 00:12:44,385 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]=== [2021-06-11 00:12:44,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:44,385 INFO L82 PathProgramCache]: Analyzing trace with hash 253707000, now seen corresponding path program 31 times [2021-06-11 00:12:44,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:44,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597499408] [2021-06-11 00:12:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:44,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:44,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:44,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:44,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:44,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:44,415 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:44,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:44,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:44,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:44,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:12:44,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:12:44,490 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:12:44,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:12:44,522 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:44,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:44,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597499408] [2021-06-11 00:12:44,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:44,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:44,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911476230] [2021-06-11 00:12:44,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:44,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:44,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:44,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:44,551 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:44,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 485 transitions, 15788 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) [2021-06-11 00:12:44,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:44,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:44,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:46,165 INFO L129 PetriNetUnfolder]: 712/5573 cut-off events. [2021-06-11 00:12:46,165 INFO L130 PetriNetUnfolder]: For 171909/177445 co-relation queries the response was YES. [2021-06-11 00:12:46,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38718 conditions, 5573 events. 712/5573 cut-off events. For 171909/177445 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 83198 event pairs, 460 based on Foata normal form. 48/5330 useless extension candidates. Maximal degree in co-relation 38595. Up to 1144 conditions per place. [2021-06-11 00:12:46,225 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 168 selfloop transitions, 314 changer transitions 2/498 dead transitions. [2021-06-11 00:12:46,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 498 transitions, 16938 flow [2021-06-11 00:12:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:46,227 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:46,227 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:46,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:46,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:46,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:46,228 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) [2021-06-11 00:12:46,228 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) [2021-06-11 00:12:46,228 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) [2021-06-11 00:12:46,228 INFO L185 Difference]: Start difference. First operand has 288 places, 485 transitions, 15788 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 498 transitions, 16938 flow [2021-06-11 00:12:47,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 498 transitions, 16191 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-11 00:12:47,186 INFO L241 Difference]: Finished difference. Result has 291 places, 485 transitions, 15689 flow [2021-06-11 00:12:47,186 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15055, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15689, PETRI_PLACES=291, PETRI_TRANSITIONS=485} [2021-06-11 00:12:47,186 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2021-06-11 00:12:47,186 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 485 transitions, 15689 flow [2021-06-11 00:12:47,187 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) [2021-06-11 00:12:47,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:47,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:47,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-11 00:12:47,187 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]=== [2021-06-11 00:12:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1271223456, now seen corresponding path program 32 times [2021-06-11 00:12:47,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:47,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936600441] [2021-06-11 00:12:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:47,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:47,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:47,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:47,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:47,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:47,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:47,220 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:47,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:47,234 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:47,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:47,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:47,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:47,277 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:47,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:47,310 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:47,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:47,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936600441] [2021-06-11 00:12:47,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:47,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:47,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787398810] [2021-06-11 00:12:47,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:47,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:47,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:47,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:47,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:47,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 485 transitions, 15689 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) [2021-06-11 00:12:47,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:47,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:47,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:49,176 INFO L129 PetriNetUnfolder]: 704/5611 cut-off events. [2021-06-11 00:12:49,176 INFO L130 PetriNetUnfolder]: For 172647/178183 co-relation queries the response was YES. [2021-06-11 00:12:49,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 5611 events. 704/5611 cut-off events. For 172647/178183 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 84126 event pairs, 452 based on Foata normal form. 48/5362 useless extension candidates. Maximal degree in co-relation 38719. Up to 1144 conditions per place. [2021-06-11 00:12:49,236 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 188 selfloop transitions, 305 changer transitions 1/508 dead transitions. [2021-06-11 00:12:49,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 508 transitions, 17204 flow [2021-06-11 00:12:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:49,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:49,237 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:49,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:49,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:49,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:49,238 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) [2021-06-11 00:12:49,239 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) [2021-06-11 00:12:49,239 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) [2021-06-11 00:12:49,239 INFO L185 Difference]: Start difference. First operand has 291 places, 485 transitions, 15689 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:49,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 508 transitions, 17204 flow [2021-06-11 00:12:50,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 508 transitions, 16571 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:12:50,170 INFO L241 Difference]: Finished difference. Result has 296 places, 492 transitions, 15994 flow [2021-06-11 00:12:50,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15070, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15994, PETRI_PLACES=296, PETRI_TRANSITIONS=492} [2021-06-11 00:12:50,171 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2021-06-11 00:12:50,171 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 492 transitions, 15994 flow [2021-06-11 00:12:50,171 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) [2021-06-11 00:12:50,171 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:50,171 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:50,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-11 00:12:50,171 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]=== [2021-06-11 00:12:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1501280288, now seen corresponding path program 33 times [2021-06-11 00:12:50,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:50,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42403160] [2021-06-11 00:12:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:50,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:50,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:50,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:50,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:50,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:50,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:50,205 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:50,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:50,217 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:50,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:50,235 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:50,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:50,257 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:50,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:50,285 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:50,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:50,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42403160] [2021-06-11 00:12:50,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:50,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:50,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106072630] [2021-06-11 00:12:50,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:50,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:50,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:50,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:50,310 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:50,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 492 transitions, 15994 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) [2021-06-11 00:12:50,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:50,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:50,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:51,979 INFO L129 PetriNetUnfolder]: 704/5605 cut-off events. [2021-06-11 00:12:51,980 INFO L130 PetriNetUnfolder]: For 174730/180261 co-relation queries the response was YES. [2021-06-11 00:12:52,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38925 conditions, 5605 events. 704/5605 cut-off events. For 174730/180261 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 84027 event pairs, 452 based on Foata normal form. 46/5363 useless extension candidates. Maximal degree in co-relation 38798. Up to 1144 conditions per place. [2021-06-11 00:12:52,038 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 184 selfloop transitions, 312 changer transitions 2/512 dead transitions. [2021-06-11 00:12:52,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 512 transitions, 17396 flow [2021-06-11 00:12:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:52,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:52,039 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:52,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:52,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:52,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:52,040 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) [2021-06-11 00:12:52,041 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) [2021-06-11 00:12:52,041 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) [2021-06-11 00:12:52,041 INFO L185 Difference]: Start difference. First operand has 296 places, 492 transitions, 15994 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:52,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 512 transitions, 17396 flow [2021-06-11 00:12:52,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 512 transitions, 16788 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-06-11 00:12:52,908 INFO L241 Difference]: Finished difference. Result has 301 places, 496 transitions, 16183 flow [2021-06-11 00:12:52,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15398, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16183, PETRI_PLACES=301, PETRI_TRANSITIONS=496} [2021-06-11 00:12:52,908 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2021-06-11 00:12:52,909 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 496 transitions, 16183 flow [2021-06-11 00:12:52,909 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) [2021-06-11 00:12:52,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:52,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:52,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-11 00:12:52,909 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]=== [2021-06-11 00:12:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:52,909 INFO L82 PathProgramCache]: Analyzing trace with hash 849153132, now seen corresponding path program 34 times [2021-06-11 00:12:52,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:52,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83217766] [2021-06-11 00:12:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:52,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:52,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:52,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:52,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:52,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:52,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:52,938 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:52,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:52,950 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:52,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:52,967 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:52,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:52,987 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:12:52,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:12:53,013 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:53,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:53,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83217766] [2021-06-11 00:12:53,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:53,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:53,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902331939] [2021-06-11 00:12:53,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:53,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:53,037 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:53,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 496 transitions, 16183 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) [2021-06-11 00:12:53,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:53,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:53,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:54,883 INFO L129 PetriNetUnfolder]: 704/5598 cut-off events. [2021-06-11 00:12:54,884 INFO L130 PetriNetUnfolder]: For 175491/181002 co-relation queries the response was YES. [2021-06-11 00:12:54,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38988 conditions, 5598 events. 704/5598 cut-off events. For 175491/181002 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 83838 event pairs, 452 based on Foata normal form. 46/5349 useless extension candidates. Maximal degree in co-relation 38859. Up to 1144 conditions per place. [2021-06-11 00:12:54,938 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 320 changer transitions 2/510 dead transitions. [2021-06-11 00:12:54,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 510 transitions, 17401 flow [2021-06-11 00:12:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:54,939 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:54,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:54,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:54,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:54,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:54,940 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) [2021-06-11 00:12:54,941 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) [2021-06-11 00:12:54,941 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) [2021-06-11 00:12:54,941 INFO L185 Difference]: Start difference. First operand has 301 places, 496 transitions, 16183 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:54,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 510 transitions, 17401 flow [2021-06-11 00:12:55,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 510 transitions, 16799 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-06-11 00:12:55,843 INFO L241 Difference]: Finished difference. Result has 301 places, 494 transitions, 16149 flow [2021-06-11 00:12:55,844 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15591, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16149, PETRI_PLACES=301, PETRI_TRANSITIONS=494} [2021-06-11 00:12:55,844 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2021-06-11 00:12:55,844 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 494 transitions, 16149 flow [2021-06-11 00:12:55,844 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) [2021-06-11 00:12:55,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:55,845 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:55,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-11 00:12:55,845 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]=== [2021-06-11 00:12:55,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:55,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1502785078, now seen corresponding path program 35 times [2021-06-11 00:12:55,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:55,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682432559] [2021-06-11 00:12:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:55,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:55,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:55,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:55,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:55,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:55,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:55,874 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:55,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:55,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:55,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:55,903 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:12:55,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:12:55,925 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:55,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:55,953 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:55,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682432559] [2021-06-11 00:12:55,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:55,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:55,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83010655] [2021-06-11 00:12:55,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:55,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:55,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:55,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:55,978 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:55,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 494 transitions, 16149 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) [2021-06-11 00:12:55,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:55,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:55,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:57,774 INFO L129 PetriNetUnfolder]: 704/5592 cut-off events. [2021-06-11 00:12:57,774 INFO L130 PetriNetUnfolder]: For 174901/180412 co-relation queries the response was YES. [2021-06-11 00:12:57,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39008 conditions, 5592 events. 704/5592 cut-off events. For 174901/180412 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 83705 event pairs, 452 based on Foata normal form. 46/5343 useless extension candidates. Maximal degree in co-relation 38882. Up to 1144 conditions per place. [2021-06-11 00:12:57,823 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 186 selfloop transitions, 307 changer transitions 1/508 dead transitions. [2021-06-11 00:12:57,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 508 transitions, 17363 flow [2021-06-11 00:12:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:12:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:12:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:12:57,824 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:12:57,824 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:12:57,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:12:57,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:12:57,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:12:57,825 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) [2021-06-11 00:12:57,826 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) [2021-06-11 00:12:57,826 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) [2021-06-11 00:12:57,826 INFO L185 Difference]: Start difference. First operand has 301 places, 494 transitions, 16149 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:12:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 508 transitions, 17363 flow [2021-06-11 00:12:58,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 508 transitions, 16662 flow, removed 18 selfloop flow, removed 9 redundant places. [2021-06-11 00:12:58,647 INFO L241 Difference]: Finished difference. Result has 300 places, 494 transitions, 16091 flow [2021-06-11 00:12:58,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15462, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16091, PETRI_PLACES=300, PETRI_TRANSITIONS=494} [2021-06-11 00:12:58,647 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2021-06-11 00:12:58,647 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 494 transitions, 16091 flow [2021-06-11 00:12:58,648 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) [2021-06-11 00:12:58,648 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:12:58,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:12:58,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-11 00:12:58,648 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]=== [2021-06-11 00:12:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:12:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1840660010, now seen corresponding path program 36 times [2021-06-11 00:12:58,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:12:58,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982781663] [2021-06-11 00:12:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:12:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:12:58,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:58,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:12:58,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:12:58,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:12:58,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:12:58,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:12:58,677 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:12:58,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:12:58,689 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:12:58,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:12:58,706 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:12:58,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:12:58,742 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:12:58,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:12:58,770 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:12:58,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:12:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:12:58,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982781663] [2021-06-11 00:12:58,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:12:58,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:12:58,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102125067] [2021-06-11 00:12:58,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:12:58,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:12:58,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:12:58,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:12:58,801 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:12:58,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 494 transitions, 16091 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) [2021-06-11 00:12:58,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:12:58,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:12:58,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:12:59,546 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-06-11 00:13:00,525 INFO L129 PetriNetUnfolder]: 704/5586 cut-off events. [2021-06-11 00:13:00,526 INFO L130 PetriNetUnfolder]: For 173568/179084 co-relation queries the response was YES. [2021-06-11 00:13:00,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38957 conditions, 5586 events. 704/5586 cut-off events. For 173568/179084 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 83652 event pairs, 452 based on Foata normal form. 48/5339 useless extension candidates. Maximal degree in co-relation 38833. Up to 1144 conditions per place. [2021-06-11 00:13:00,593 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 183 selfloop transitions, 309 changer transitions 1/507 dead transitions. [2021-06-11 00:13:00,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 507 transitions, 17263 flow [2021-06-11 00:13:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:00,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:00,594 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:00,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:00,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:00,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:00,595 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) [2021-06-11 00:13:00,595 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) [2021-06-11 00:13:00,595 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) [2021-06-11 00:13:00,595 INFO L185 Difference]: Start difference. First operand has 300 places, 494 transitions, 16091 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:00,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 507 transitions, 17263 flow [2021-06-11 00:13:01,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 507 transitions, 16646 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-11 00:13:01,557 INFO L241 Difference]: Finished difference. Result has 303 places, 495 transitions, 16168 flow [2021-06-11 00:13:01,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16168, PETRI_PLACES=303, PETRI_TRANSITIONS=495} [2021-06-11 00:13:01,557 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2021-06-11 00:13:01,558 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 495 transitions, 16168 flow [2021-06-11 00:13:01,558 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) [2021-06-11 00:13:01,558 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:01,558 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:01,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-11 00:13:01,558 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]=== [2021-06-11 00:13:01,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:01,558 INFO L82 PathProgramCache]: Analyzing trace with hash 353559026, now seen corresponding path program 37 times [2021-06-11 00:13:01,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:01,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948892442] [2021-06-11 00:13:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:01,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:01,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:01,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:01,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:01,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:01,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:01,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:13:01,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:13:01,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:13:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:13:01,624 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:13:01,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:13:01,662 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:13:01,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:13:01,688 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:01,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:01,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948892442] [2021-06-11 00:13:01,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:01,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:01,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696430192] [2021-06-11 00:13:01,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:01,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:01,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:01,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:01,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:01,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 495 transitions, 16168 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) [2021-06-11 00:13:01,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:01,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:01,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:03,343 INFO L129 PetriNetUnfolder]: 704/5580 cut-off events. [2021-06-11 00:13:03,343 INFO L130 PetriNetUnfolder]: For 174623/180139 co-relation queries the response was YES. [2021-06-11 00:13:03,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38968 conditions, 5580 events. 704/5580 cut-off events. For 174623/180139 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 83484 event pairs, 452 based on Foata normal form. 48/5333 useless extension candidates. Maximal degree in co-relation 38843. Up to 1144 conditions per place. [2021-06-11 00:13:03,403 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 182 selfloop transitions, 309 changer transitions 1/506 dead transitions. [2021-06-11 00:13:03,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 506 transitions, 17270 flow [2021-06-11 00:13:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:03,404 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:03,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:03,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:03,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:03,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:03,405 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) [2021-06-11 00:13:03,406 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) [2021-06-11 00:13:03,406 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) [2021-06-11 00:13:03,406 INFO L185 Difference]: Start difference. First operand has 303 places, 495 transitions, 16168 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:03,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 506 transitions, 17270 flow [2021-06-11 00:13:04,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 506 transitions, 16669 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-06-11 00:13:04,406 INFO L241 Difference]: Finished difference. Result has 304 places, 494 transitions, 16153 flow [2021-06-11 00:13:04,407 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15577, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16153, PETRI_PLACES=304, PETRI_TRANSITIONS=494} [2021-06-11 00:13:04,407 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2021-06-11 00:13:04,407 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 494 transitions, 16153 flow [2021-06-11 00:13:04,407 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) [2021-06-11 00:13:04,407 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:04,407 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:04,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-11 00:13:04,407 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]=== [2021-06-11 00:13:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash 678155148, now seen corresponding path program 38 times [2021-06-11 00:13:04,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:04,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654588328] [2021-06-11 00:13:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:04,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:04,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:04,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:04,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:04,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:04,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:04,440 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:13:04,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:13:04,452 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:13:04,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:13:04,469 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:13:04,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:13:04,490 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:04,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:04,517 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:04,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:04,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654588328] [2021-06-11 00:13:04,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:04,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:04,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935949502] [2021-06-11 00:13:04,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:04,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:04,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:04,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:04,546 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:04,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 494 transitions, 16153 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) [2021-06-11 00:13:04,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:04,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:04,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:06,273 INFO L129 PetriNetUnfolder]: 704/5527 cut-off events. [2021-06-11 00:13:06,273 INFO L130 PetriNetUnfolder]: For 176077/180170 co-relation queries the response was YES. [2021-06-11 00:13:06,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38967 conditions, 5527 events. 704/5527 cut-off events. For 176077/180170 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 82567 event pairs, 536 based on Foata normal form. 48/5277 useless extension candidates. Maximal degree in co-relation 38844. Up to 1144 conditions per place. [2021-06-11 00:13:06,332 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 181 selfloop transitions, 308 changer transitions 2/505 dead transitions. [2021-06-11 00:13:06,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 505 transitions, 17253 flow [2021-06-11 00:13:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:06,333 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:06,333 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:06,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:06,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:06,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:06,334 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) [2021-06-11 00:13:06,335 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) [2021-06-11 00:13:06,335 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) [2021-06-11 00:13:06,335 INFO L185 Difference]: Start difference. First operand has 304 places, 494 transitions, 16153 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:06,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 505 transitions, 17253 flow [2021-06-11 00:13:07,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 505 transitions, 16621 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-11 00:13:07,155 INFO L241 Difference]: Finished difference. Result has 305 places, 492 transitions, 16068 flow [2021-06-11 00:13:07,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15531, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16068, PETRI_PLACES=305, PETRI_TRANSITIONS=492} [2021-06-11 00:13:07,156 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2021-06-11 00:13:07,156 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 492 transitions, 16068 flow [2021-06-11 00:13:07,156 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) [2021-06-11 00:13:07,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:07,157 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:07,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-11 00:13:07,157 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]=== [2021-06-11 00:13:07,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:07,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1043792262, now seen corresponding path program 39 times [2021-06-11 00:13:07,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:07,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305561361] [2021-06-11 00:13:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:07,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:07,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:07,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:07,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:07,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:07,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:07,195 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:13:07,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:13:07,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:13:07,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:13:07,225 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:13:07,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:13:07,246 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:07,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:07,273 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:07,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:07,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305561361] [2021-06-11 00:13:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:07,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607364867] [2021-06-11 00:13:07,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:07,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:07,303 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:07,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 492 transitions, 16068 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) [2021-06-11 00:13:07,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:07,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:07,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:09,022 INFO L129 PetriNetUnfolder]: 704/5570 cut-off events. [2021-06-11 00:13:09,022 INFO L130 PetriNetUnfolder]: For 173670/179186 co-relation queries the response was YES. [2021-06-11 00:13:09,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38996 conditions, 5570 events. 704/5570 cut-off events. For 173670/179186 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 83373 event pairs, 452 based on Foata normal form. 48/5324 useless extension candidates. Maximal degree in co-relation 38874. Up to 1144 conditions per place. [2021-06-11 00:13:09,070 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 183 selfloop transitions, 304 changer transitions 2/503 dead transitions. [2021-06-11 00:13:09,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 503 transitions, 17164 flow [2021-06-11 00:13:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:09,072 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:09,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:09,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:09,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:09,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:09,073 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) [2021-06-11 00:13:09,073 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) [2021-06-11 00:13:09,073 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) [2021-06-11 00:13:09,073 INFO L185 Difference]: Start difference. First operand has 305 places, 492 transitions, 16068 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:09,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 503 transitions, 17164 flow [2021-06-11 00:13:09,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 503 transitions, 16541 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-11 00:13:09,898 INFO L241 Difference]: Finished difference. Result has 306 places, 490 transitions, 15982 flow [2021-06-11 00:13:09,899 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15455, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15982, PETRI_PLACES=306, PETRI_TRANSITIONS=490} [2021-06-11 00:13:09,899 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 262 predicate places. [2021-06-11 00:13:09,899 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 490 transitions, 15982 flow [2021-06-11 00:13:09,899 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) [2021-06-11 00:13:09,899 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:09,899 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:09,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-11 00:13:09,899 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]=== [2021-06-11 00:13:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:09,900 INFO L82 PathProgramCache]: Analyzing trace with hash 188519308, now seen corresponding path program 40 times [2021-06-11 00:13:09,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:09,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727963015] [2021-06-11 00:13:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:09,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:09,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:09,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:09,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:09,924 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:09,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:09,933 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 00:13:09,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 00:13:09,946 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:13:09,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:13:09,961 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:13:09,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:13:09,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:09,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:10,006 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:10,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:10,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727963015] [2021-06-11 00:13:10,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:10,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:10,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34239136] [2021-06-11 00:13:10,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:10,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:10,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:10,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:10,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 490 transitions, 15982 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) [2021-06-11 00:13:10,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:10,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:10,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:10,777 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2021-06-11 00:13:11,649 INFO L129 PetriNetUnfolder]: 704/5563 cut-off events. [2021-06-11 00:13:11,649 INFO L130 PetriNetUnfolder]: For 173167/178683 co-relation queries the response was YES. [2021-06-11 00:13:11,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38955 conditions, 5563 events. 704/5563 cut-off events. For 173167/178683 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 83134 event pairs, 452 based on Foata normal form. 48/5318 useless extension candidates. Maximal degree in co-relation 38834. Up to 1144 conditions per place. [2021-06-11 00:13:11,709 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 162 selfloop transitions, 322 changer transitions 3/501 dead transitions. [2021-06-11 00:13:11,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 501 transitions, 17074 flow [2021-06-11 00:13:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:11,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:11,710 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:11,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:11,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:11,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:11,711 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) [2021-06-11 00:13:11,712 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) [2021-06-11 00:13:11,712 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) [2021-06-11 00:13:11,712 INFO L185 Difference]: Start difference. First operand has 306 places, 490 transitions, 15982 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:11,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 501 transitions, 17074 flow [2021-06-11 00:13:12,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 501 transitions, 16451 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-11 00:13:12,673 INFO L241 Difference]: Finished difference. Result has 307 places, 487 transitions, 15887 flow [2021-06-11 00:13:12,674 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15369, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15887, PETRI_PLACES=307, PETRI_TRANSITIONS=487} [2021-06-11 00:13:12,674 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2021-06-11 00:13:12,674 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 487 transitions, 15887 flow [2021-06-11 00:13:12,674 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) [2021-06-11 00:13:12,674 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:12,674 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:12,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-11 00:13:12,674 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]=== [2021-06-11 00:13:12,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:12,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1916461202, now seen corresponding path program 41 times [2021-06-11 00:13:12,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:12,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865559748] [2021-06-11 00:13:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:12,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:12,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:12,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:12,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:12,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:12,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:13:12,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:12,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 00:13:12,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:13:12,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:13:12,729 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:13:12,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:13:12,765 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:12,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:12,791 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:12,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:12,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865559748] [2021-06-11 00:13:12,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:12,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:12,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243154771] [2021-06-11 00:13:12,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:12,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:12,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:12,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:12,816 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:12,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 487 transitions, 15887 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) [2021-06-11 00:13:12,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:12,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:12,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:14,947 INFO L129 PetriNetUnfolder]: 767/7381 cut-off events. [2021-06-11 00:13:14,947 INFO L130 PetriNetUnfolder]: For 231999/237491 co-relation queries the response was YES. [2021-06-11 00:13:15,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50287 conditions, 7381 events. 767/7381 cut-off events. For 231999/237491 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 119726 event pairs, 204 based on Foata normal form. 13/6983 useless extension candidates. Maximal degree in co-relation 50167. Up to 1958 conditions per place. [2021-06-11 00:13:15,171 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 584 selfloop transitions, 192 changer transitions 3/793 dead transitions. [2021-06-11 00:13:15,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 793 transitions, 27736 flow [2021-06-11 00:13:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:15,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:15,173 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:15,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:15,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:15,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:15,175 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) [2021-06-11 00:13:15,176 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) [2021-06-11 00:13:15,176 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) [2021-06-11 00:13:15,176 INFO L185 Difference]: Start difference. First operand has 307 places, 487 transitions, 15887 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 793 transitions, 27736 flow [2021-06-11 00:13:16,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 793 transitions, 26683 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-06-11 00:13:16,349 INFO L241 Difference]: Finished difference. Result has 314 places, 576 transitions, 18750 flow [2021-06-11 00:13:16,350 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15262, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18750, PETRI_PLACES=314, PETRI_TRANSITIONS=576} [2021-06-11 00:13:16,350 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2021-06-11 00:13:16,350 INFO L480 AbstractCegarLoop]: Abstraction has has 314 places, 576 transitions, 18750 flow [2021-06-11 00:13:16,350 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) [2021-06-11 00:13:16,350 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:16,350 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:16,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-11 00:13:16,351 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]=== [2021-06-11 00:13:16,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:16,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1495848212, now seen corresponding path program 42 times [2021-06-11 00:13:16,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:16,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267829826] [2021-06-11 00:13:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:16,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:16,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:16,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:16,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:16,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:16,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:13:16,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:16,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:16,389 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:13:16,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:13:16,407 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:13:16,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:13:16,431 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:16,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:16,464 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:16,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:16,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267829826] [2021-06-11 00:13:16,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:16,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:16,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578471451] [2021-06-11 00:13:16,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:16,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:16,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:16,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:16,499 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:16,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 576 transitions, 18750 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) [2021-06-11 00:13:16,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:16,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:16,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:19,049 INFO L129 PetriNetUnfolder]: 764/7646 cut-off events. [2021-06-11 00:13:19,049 INFO L130 PetriNetUnfolder]: For 260855/269984 co-relation queries the response was YES. [2021-06-11 00:13:19,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53968 conditions, 7646 events. 764/7646 cut-off events. For 260855/269984 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 124382 event pairs, 410 based on Foata normal form. 30/7361 useless extension candidates. Maximal degree in co-relation 53843. Up to 1538 conditions per place. [2021-06-11 00:13:19,124 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 451 selfloop transitions, 262 changer transitions 2/729 dead transitions. [2021-06-11 00:13:19,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 729 transitions, 25251 flow [2021-06-11 00:13:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:19,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:19,126 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:19,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:19,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:19,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:19,127 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) [2021-06-11 00:13:19,127 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) [2021-06-11 00:13:19,127 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) [2021-06-11 00:13:19,128 INFO L185 Difference]: Start difference. First operand has 314 places, 576 transitions, 18750 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:19,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 729 transitions, 25251 flow [2021-06-11 00:13:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 729 transitions, 24913 flow, removed 106 selfloop flow, removed 2 redundant places. [2021-06-11 00:13:20,737 INFO L241 Difference]: Finished difference. Result has 325 places, 635 transitions, 21459 flow [2021-06-11 00:13:20,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=18462, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21459, PETRI_PLACES=325, PETRI_TRANSITIONS=635} [2021-06-11 00:13:20,738 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 281 predicate places. [2021-06-11 00:13:20,738 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 635 transitions, 21459 flow [2021-06-11 00:13:20,738 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) [2021-06-11 00:13:20,738 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:20,739 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:20,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-11 00:13:20,739 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]=== [2021-06-11 00:13:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash -217531006, now seen corresponding path program 43 times [2021-06-11 00:13:20,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:20,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333916398] [2021-06-11 00:13:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:20,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:20,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:20,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:20,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:20,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:20,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:13:20,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:20,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:20,784 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:13:20,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:13:20,817 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:13:20,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:13:20,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:20,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:20,896 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:20,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:20,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333916398] [2021-06-11 00:13:20,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:20,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:20,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937950937] [2021-06-11 00:13:20,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:20,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:20,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:20,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:20,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 635 transitions, 21459 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) [2021-06-11 00:13:20,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:20,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:20,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:24,019 INFO L129 PetriNetUnfolder]: 731/8678 cut-off events. [2021-06-11 00:13:24,020 INFO L130 PetriNetUnfolder]: For 306933/318099 co-relation queries the response was YES. [2021-06-11 00:13:24,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60845 conditions, 8678 events. 731/8678 cut-off events. For 306933/318099 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 147719 event pairs, 374 based on Foata normal form. 57/8264 useless extension candidates. Maximal degree in co-relation 60715. Up to 1720 conditions per place. [2021-06-11 00:13:24,098 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 571 selfloop transitions, 310 changer transitions 3/898 dead transitions. [2021-06-11 00:13:24,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 898 transitions, 32786 flow [2021-06-11 00:13:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:24,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:24,100 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:24,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:24,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:24,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:24,100 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) [2021-06-11 00:13:24,101 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) [2021-06-11 00:13:24,101 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) [2021-06-11 00:13:24,101 INFO L185 Difference]: Start difference. First operand has 325 places, 635 transitions, 21459 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 898 transitions, 32786 flow [2021-06-11 00:13:25,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 898 transitions, 32280 flow, removed 214 selfloop flow, removed 3 redundant places. [2021-06-11 00:13:26,019 INFO L241 Difference]: Finished difference. Result has 336 places, 726 transitions, 25636 flow [2021-06-11 00:13:26,020 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=21175, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25636, PETRI_PLACES=336, PETRI_TRANSITIONS=726} [2021-06-11 00:13:26,020 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2021-06-11 00:13:26,020 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 726 transitions, 25636 flow [2021-06-11 00:13:26,020 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) [2021-06-11 00:13:26,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:26,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:26,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-11 00:13:26,020 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]=== [2021-06-11 00:13:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash -41679772, now seen corresponding path program 44 times [2021-06-11 00:13:26,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:26,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053187374] [2021-06-11 00:13:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:26,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:26,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:26,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:26,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:26,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:26,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:26,048 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:26,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:26,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:13:26,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:13:26,076 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:13:26,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:13:26,099 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:26,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:26,132 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:26,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:26,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053187374] [2021-06-11 00:13:26,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:26,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:26,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859585200] [2021-06-11 00:13:26,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:26,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:26,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:26,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:26,163 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:26,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 726 transitions, 25636 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) [2021-06-11 00:13:26,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:26,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:26,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:29,542 INFO L129 PetriNetUnfolder]: 687/8792 cut-off events. [2021-06-11 00:13:29,542 INFO L130 PetriNetUnfolder]: For 329734/340730 co-relation queries the response was YES. [2021-06-11 00:13:29,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 8792 events. 687/8792 cut-off events. For 329734/340730 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 150252 event pairs, 589 based on Foata normal form. 49/8428 useless extension candidates. Maximal degree in co-relation 63641. Up to 1679 conditions per place. [2021-06-11 00:13:29,624 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 411 selfloop transitions, 418 changer transitions 1/844 dead transitions. [2021-06-11 00:13:29,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 844 transitions, 31549 flow [2021-06-11 00:13:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:29,625 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:29,625 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:29,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:29,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:29,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:29,626 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) [2021-06-11 00:13:29,627 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) [2021-06-11 00:13:29,627 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) [2021-06-11 00:13:29,627 INFO L185 Difference]: Start difference. First operand has 336 places, 726 transitions, 25636 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:29,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 844 transitions, 31549 flow [2021-06-11 00:13:31,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 844 transitions, 31006 flow, removed 173 selfloop flow, removed 4 redundant places. [2021-06-11 00:13:31,833 INFO L241 Difference]: Finished difference. Result has 345 places, 751 transitions, 27401 flow [2021-06-11 00:13:31,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27401, PETRI_PLACES=345, PETRI_TRANSITIONS=751} [2021-06-11 00:13:31,834 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 301 predicate places. [2021-06-11 00:13:31,834 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 751 transitions, 27401 flow [2021-06-11 00:13:31,834 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) [2021-06-11 00:13:31,835 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:31,835 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:31,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-11 00:13:31,835 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]=== [2021-06-11 00:13:31,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:31,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2049714668, now seen corresponding path program 45 times [2021-06-11 00:13:31,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:31,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025944321] [2021-06-11 00:13:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:31,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:31,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:31,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:31,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:31,853 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:31,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:31,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:31,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:31,870 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:13:31,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:13:31,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:13:31,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:13:31,937 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:31,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:31,962 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:31,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:31,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025944321] [2021-06-11 00:13:31,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:31,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:31,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542007219] [2021-06-11 00:13:31,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:31,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:31,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:31,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 751 transitions, 27401 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) [2021-06-11 00:13:31,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:31,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:31,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:35,576 INFO L129 PetriNetUnfolder]: 636/9207 cut-off events. [2021-06-11 00:13:35,576 INFO L130 PetriNetUnfolder]: For 353061/366332 co-relation queries the response was YES. [2021-06-11 00:13:35,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67009 conditions, 9207 events. 636/9207 cut-off events. For 353061/366332 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 160372 event pairs, 626 based on Foata normal form. 63/8823 useless extension candidates. Maximal degree in co-relation 66870. Up to 1590 conditions per place. [2021-06-11 00:13:35,671 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 312 selfloop transitions, 486 changer transitions 2/814 dead transitions. [2021-06-11 00:13:35,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 814 transitions, 31051 flow [2021-06-11 00:13:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:35,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:35,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:35,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:35,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:35,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:35,673 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) [2021-06-11 00:13:35,674 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) [2021-06-11 00:13:35,674 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) [2021-06-11 00:13:35,674 INFO L185 Difference]: Start difference. First operand has 345 places, 751 transitions, 27401 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:35,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 814 transitions, 31051 flow [2021-06-11 00:13:38,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 814 transitions, 30420 flow, removed 113 selfloop flow, removed 3 redundant places. [2021-06-11 00:13:38,492 INFO L241 Difference]: Finished difference. Result has 354 places, 770 transitions, 28677 flow [2021-06-11 00:13:38,492 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=26832, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=28677, PETRI_PLACES=354, PETRI_TRANSITIONS=770} [2021-06-11 00:13:38,492 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 310 predicate places. [2021-06-11 00:13:38,493 INFO L480 AbstractCegarLoop]: Abstraction has has 354 places, 770 transitions, 28677 flow [2021-06-11 00:13:38,493 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) [2021-06-11 00:13:38,493 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:38,493 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:38,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-11 00:13:38,493 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]=== [2021-06-11 00:13:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash -759143782, now seen corresponding path program 46 times [2021-06-11 00:13:38,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:38,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868427559] [2021-06-11 00:13:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:38,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:38,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:38,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:38,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:38,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:38,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:38,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:13:38,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:13:38,560 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:13:38,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:13:38,592 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:38,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:38,617 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:38,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:38,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868427559] [2021-06-11 00:13:38,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:38,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:38,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126916554] [2021-06-11 00:13:38,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:38,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:38,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:38,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:38,642 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:38,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 770 transitions, 28677 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) [2021-06-11 00:13:38,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:38,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:38,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:42,379 INFO L129 PetriNetUnfolder]: 633/9256 cut-off events. [2021-06-11 00:13:42,379 INFO L130 PetriNetUnfolder]: For 362647/375834 co-relation queries the response was YES. [2021-06-11 00:13:42,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68005 conditions, 9256 events. 633/9256 cut-off events. For 362647/375834 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 161503 event pairs, 563 based on Foata normal form. 81/8867 useless extension candidates. Maximal degree in co-relation 67862. Up to 1771 conditions per place. [2021-06-11 00:13:42,468 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 390 selfloop transitions, 498 changer transitions 2/904 dead transitions. [2021-06-11 00:13:42,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 904 transitions, 35678 flow [2021-06-11 00:13:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:42,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:42,469 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:42,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:42,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:42,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:42,471 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) [2021-06-11 00:13:42,471 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) [2021-06-11 00:13:42,471 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) [2021-06-11 00:13:42,471 INFO L185 Difference]: Start difference. First operand has 354 places, 770 transitions, 28677 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:42,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 904 transitions, 35678 flow [2021-06-11 00:13:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 904 transitions, 34822 flow, removed 41 selfloop flow, removed 5 redundant places. [2021-06-11 00:13:45,129 INFO L241 Difference]: Finished difference. Result has 362 places, 807 transitions, 31011 flow [2021-06-11 00:13:45,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=27861, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31011, PETRI_PLACES=362, PETRI_TRANSITIONS=807} [2021-06-11 00:13:45,130 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2021-06-11 00:13:45,130 INFO L480 AbstractCegarLoop]: Abstraction has has 362 places, 807 transitions, 31011 flow [2021-06-11 00:13:45,130 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) [2021-06-11 00:13:45,130 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:45,130 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:45,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-11 00:13:45,130 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]=== [2021-06-11 00:13:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:45,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2074043056, now seen corresponding path program 47 times [2021-06-11 00:13:45,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:45,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654586755] [2021-06-11 00:13:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:45,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:45,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:45,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:45,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:45,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:45,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:45,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:45,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:45,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:13:45,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:13:45,188 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:13:45,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:13:45,209 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:45,237 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:45,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:45,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654586755] [2021-06-11 00:13:45,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:45,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:45,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5530667] [2021-06-11 00:13:45,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:45,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:45,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:45,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:45,263 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:45,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 807 transitions, 31011 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) [2021-06-11 00:13:45,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:45,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:45,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:49,220 INFO L129 PetriNetUnfolder]: 581/9557 cut-off events. [2021-06-11 00:13:49,220 INFO L130 PetriNetUnfolder]: For 391062/404380 co-relation queries the response was YES. [2021-06-11 00:13:49,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71256 conditions, 9557 events. 581/9557 cut-off events. For 391062/404380 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 168963 event pairs, 547 based on Foata normal form. 66/9147 useless extension candidates. Maximal degree in co-relation 71109. Up to 1737 conditions per place. [2021-06-11 00:13:49,340 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 459 selfloop transitions, 445 changer transitions 2/920 dead transitions. [2021-06-11 00:13:49,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 920 transitions, 37132 flow [2021-06-11 00:13:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:49,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:49,341 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:49,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:49,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:49,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:49,342 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) [2021-06-11 00:13:49,343 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) [2021-06-11 00:13:49,343 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) [2021-06-11 00:13:49,343 INFO L185 Difference]: Start difference. First operand has 362 places, 807 transitions, 31011 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:49,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 920 transitions, 37132 flow [2021-06-11 00:13:52,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 920 transitions, 36443 flow, removed 142 selfloop flow, removed 3 redundant places. [2021-06-11 00:13:52,668 INFO L241 Difference]: Finished difference. Result has 371 places, 836 transitions, 32636 flow [2021-06-11 00:13:52,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=30352, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32636, PETRI_PLACES=371, PETRI_TRANSITIONS=836} [2021-06-11 00:13:52,669 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 327 predicate places. [2021-06-11 00:13:52,669 INFO L480 AbstractCegarLoop]: Abstraction has has 371 places, 836 transitions, 32636 flow [2021-06-11 00:13:52,669 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) [2021-06-11 00:13:52,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:13:52,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:13:52,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-11 00:13:52,669 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]=== [2021-06-11 00:13:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:13:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash 678417136, now seen corresponding path program 48 times [2021-06-11 00:13:52,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:13:52,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637682193] [2021-06-11 00:13:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:13:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:13:52,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:52,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:13:52,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:13:52,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:13:52,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:13:52,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:13:52,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:13:52,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:13:52,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:13:52,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:13:52,732 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:13:52,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:13:52,753 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:13:52,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:13:52,780 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:13:52,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:13:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:13:52,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637682193] [2021-06-11 00:13:52,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:13:52,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:13:52,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186685768] [2021-06-11 00:13:52,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:13:52,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:13:52,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:13:52,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:13:52,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:13:52,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 836 transitions, 32636 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) [2021-06-11 00:13:52,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:13:52,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:13:52,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:13:57,038 INFO L129 PetriNetUnfolder]: 547/9861 cut-off events. [2021-06-11 00:13:57,038 INFO L130 PetriNetUnfolder]: For 410426/423751 co-relation queries the response was YES. [2021-06-11 00:13:57,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73749 conditions, 9861 events. 547/9861 cut-off events. For 410426/423751 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 176043 event pairs, 547 based on Foata normal form. 66/9412 useless extension candidates. Maximal degree in co-relation 73598. Up to 1687 conditions per place. [2021-06-11 00:13:57,136 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 394 selfloop transitions, 503 changer transitions 3/914 dead transitions. [2021-06-11 00:13:57,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 914 transitions, 37156 flow [2021-06-11 00:13:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:13:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:13:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:13:57,137 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:13:57,137 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:13:57,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:13:57,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:13:57,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:13:57,138 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) [2021-06-11 00:13:57,138 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) [2021-06-11 00:13:57,139 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) [2021-06-11 00:13:57,139 INFO L185 Difference]: Start difference. First operand has 371 places, 836 transitions, 32636 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:13:57,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 914 transitions, 37156 flow [2021-06-11 00:14:00,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 914 transitions, 36625 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-06-11 00:14:00,520 INFO L241 Difference]: Finished difference. Result has 379 places, 864 transitions, 34416 flow [2021-06-11 00:14:00,521 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=32123, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34416, PETRI_PLACES=379, PETRI_TRANSITIONS=864} [2021-06-11 00:14:00,521 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2021-06-11 00:14:00,521 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 864 transitions, 34416 flow [2021-06-11 00:14:00,521 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) [2021-06-11 00:14:00,521 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:00,521 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:00,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-11 00:14:00,521 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]=== [2021-06-11 00:14:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:00,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1892064860, now seen corresponding path program 49 times [2021-06-11 00:14:00,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:00,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348987955] [2021-06-11 00:14:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:00,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:00,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:00,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:00,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:00,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:00,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:00,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:00,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:00,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:14:00,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:14:00,574 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:14:00,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:14:00,595 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:14:00,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:14:00,621 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:00,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:00,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348987955] [2021-06-11 00:14:00,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:00,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:00,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852763591] [2021-06-11 00:14:00,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:00,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:00,649 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:00,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 864 transitions, 34416 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) [2021-06-11 00:14:00,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:00,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:00,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:04,893 INFO L129 PetriNetUnfolder]: 547/9870 cut-off events. [2021-06-11 00:14:04,893 INFO L130 PetriNetUnfolder]: For 425794/439125 co-relation queries the response was YES. [2021-06-11 00:14:04,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74884 conditions, 9870 events. 547/9870 cut-off events. For 425794/439125 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 176352 event pairs, 523 based on Foata normal form. 84/9454 useless extension candidates. Maximal degree in co-relation 74730. Up to 1828 conditions per place. [2021-06-11 00:14:04,995 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 429 selfloop transitions, 539 changer transitions 1/983 dead transitions. [2021-06-11 00:14:04,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 983 transitions, 41062 flow [2021-06-11 00:14:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:04,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:04,996 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:04,996 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:04,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:04,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:04,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:04,997 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) [2021-06-11 00:14:04,997 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) [2021-06-11 00:14:04,997 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) [2021-06-11 00:14:04,997 INFO L185 Difference]: Start difference. First operand has 379 places, 864 transitions, 34416 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:04,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 983 transitions, 41062 flow [2021-06-11 00:14:08,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 983 transitions, 40567 flow, removed 40 selfloop flow, removed 5 redundant places. [2021-06-11 00:14:08,750 INFO L241 Difference]: Finished difference. Result has 386 places, 893 transitions, 36583 flow [2021-06-11 00:14:08,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=33935, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36583, PETRI_PLACES=386, PETRI_TRANSITIONS=893} [2021-06-11 00:14:08,750 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 342 predicate places. [2021-06-11 00:14:08,750 INFO L480 AbstractCegarLoop]: Abstraction has has 386 places, 893 transitions, 36583 flow [2021-06-11 00:14:08,751 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) [2021-06-11 00:14:08,751 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:08,751 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:08,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-11 00:14:08,751 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]=== [2021-06-11 00:14:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash 468623204, now seen corresponding path program 50 times [2021-06-11 00:14:08,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:08,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172778499] [2021-06-11 00:14:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:08,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:08,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:08,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:08,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:08,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:08,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:08,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:08,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:08,789 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:14:08,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:14:08,806 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:14:08,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:14:08,826 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:14:08,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:14:08,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:08,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:08,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172778499] [2021-06-11 00:14:08,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:08,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:08,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739896366] [2021-06-11 00:14:08,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:08,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:08,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:08,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:08,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:08,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 893 transitions, 36583 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) [2021-06-11 00:14:08,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:08,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:08,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:13,419 INFO L129 PetriNetUnfolder]: 547/9863 cut-off events. [2021-06-11 00:14:13,419 INFO L130 PetriNetUnfolder]: For 444311/457625 co-relation queries the response was YES. [2021-06-11 00:14:13,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76192 conditions, 9863 events. 547/9863 cut-off events. For 444311/457625 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 176154 event pairs, 523 based on Foata normal form. 84/9453 useless extension candidates. Maximal degree in co-relation 76036. Up to 1828 conditions per place. [2021-06-11 00:14:13,508 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 396 selfloop transitions, 542 changer transitions 1/953 dead transitions. [2021-06-11 00:14:13,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 953 transitions, 40695 flow [2021-06-11 00:14:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:13,509 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:13,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:13,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:13,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:13,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:13,510 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) [2021-06-11 00:14:13,510 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) [2021-06-11 00:14:13,510 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) [2021-06-11 00:14:13,510 INFO L185 Difference]: Start difference. First operand has 386 places, 893 transitions, 36583 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 953 transitions, 40695 flow [2021-06-11 00:14:17,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 953 transitions, 39791 flow, removed 55 selfloop flow, removed 4 redundant places. [2021-06-11 00:14:17,255 INFO L241 Difference]: Finished difference. Result has 392 places, 944 transitions, 39198 flow [2021-06-11 00:14:17,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=35695, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39198, PETRI_PLACES=392, PETRI_TRANSITIONS=944} [2021-06-11 00:14:17,256 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2021-06-11 00:14:17,256 INFO L480 AbstractCegarLoop]: Abstraction has has 392 places, 944 transitions, 39198 flow [2021-06-11 00:14:17,256 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) [2021-06-11 00:14:17,256 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:17,256 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:17,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-11 00:14:17,256 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]=== [2021-06-11 00:14:17,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:17,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1052512950, now seen corresponding path program 51 times [2021-06-11 00:14:17,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:17,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724812840] [2021-06-11 00:14:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:17,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:17,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:17,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:17,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:17,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:17,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:17,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:17,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:17,295 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:14:17,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:14:17,312 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:14:17,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:14:17,334 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:14:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:14:17,363 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:17,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:17,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724812840] [2021-06-11 00:14:17,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:17,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:17,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996226873] [2021-06-11 00:14:17,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:17,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:17,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:17,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:17,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:17,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 944 transitions, 39198 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) [2021-06-11 00:14:17,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:17,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:17,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:22,331 INFO L129 PetriNetUnfolder]: 547/9859 cut-off events. [2021-06-11 00:14:22,331 INFO L130 PetriNetUnfolder]: For 453472/466786 co-relation queries the response was YES. [2021-06-11 00:14:22,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76854 conditions, 9859 events. 547/9859 cut-off events. For 453472/466786 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 176133 event pairs, 523 based on Foata normal form. 84/9449 useless extension candidates. Maximal degree in co-relation 76696. Up to 1828 conditions per place. [2021-06-11 00:14:22,443 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 543 changer transitions 2/952 dead transitions. [2021-06-11 00:14:22,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 952 transitions, 41197 flow [2021-06-11 00:14:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:22,444 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:22,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:22,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:22,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:22,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:22,445 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) [2021-06-11 00:14:22,446 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) [2021-06-11 00:14:22,446 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) [2021-06-11 00:14:22,446 INFO L185 Difference]: Start difference. First operand has 392 places, 944 transitions, 39198 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:22,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 952 transitions, 41197 flow [2021-06-11 00:14:26,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 952 transitions, 40301 flow, removed 51 selfloop flow, removed 4 redundant places. [2021-06-11 00:14:26,155 INFO L241 Difference]: Finished difference. Result has 396 places, 942 transitions, 39300 flow [2021-06-11 00:14:26,155 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38312, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39300, PETRI_PLACES=396, PETRI_TRANSITIONS=942} [2021-06-11 00:14:26,156 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 352 predicate places. [2021-06-11 00:14:26,156 INFO L480 AbstractCegarLoop]: Abstraction has has 396 places, 942 transitions, 39300 flow [2021-06-11 00:14:26,156 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) [2021-06-11 00:14:26,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:26,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:26,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-11 00:14:26,156 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]=== [2021-06-11 00:14:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:26,156 INFO L82 PathProgramCache]: Analyzing trace with hash 846540994, now seen corresponding path program 52 times [2021-06-11 00:14:26,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:26,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145117882] [2021-06-11 00:14:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:26,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:26,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:26,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:26,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:26,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:26,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:26,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:26,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:26,238 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:14:26,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:14:26,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:14:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:14:26,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:14:26,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:14:26,300 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:26,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145117882] [2021-06-11 00:14:26,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:26,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:26,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054551176] [2021-06-11 00:14:26,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:26,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:26,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:26,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:26,324 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:26,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 942 transitions, 39300 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) [2021-06-11 00:14:26,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:26,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:26,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:30,797 INFO L129 PetriNetUnfolder]: 547/9853 cut-off events. [2021-06-11 00:14:30,797 INFO L130 PetriNetUnfolder]: For 451081/464395 co-relation queries the response was YES. [2021-06-11 00:14:30,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77183 conditions, 9853 events. 547/9853 cut-off events. For 451081/464395 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 175989 event pairs, 523 based on Foata normal form. 84/9444 useless extension candidates. Maximal degree in co-relation 77025. Up to 1828 conditions per place. [2021-06-11 00:14:30,905 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 542 changer transitions 1/950 dead transitions. [2021-06-11 00:14:30,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 950 transitions, 41295 flow [2021-06-11 00:14:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:30,906 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:30,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:30,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:30,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:30,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:30,907 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) [2021-06-11 00:14:30,907 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) [2021-06-11 00:14:30,907 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) [2021-06-11 00:14:30,907 INFO L185 Difference]: Start difference. First operand has 396 places, 942 transitions, 39300 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:30,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 950 transitions, 41295 flow [2021-06-11 00:14:34,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 950 transitions, 40202 flow, removed 56 selfloop flow, removed 5 redundant places. [2021-06-11 00:14:34,870 INFO L241 Difference]: Finished difference. Result has 399 places, 941 transitions, 39247 flow [2021-06-11 00:14:34,871 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38217, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39247, PETRI_PLACES=399, PETRI_TRANSITIONS=941} [2021-06-11 00:14:34,871 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2021-06-11 00:14:34,871 INFO L480 AbstractCegarLoop]: Abstraction has has 399 places, 941 transitions, 39247 flow [2021-06-11 00:14:34,871 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) [2021-06-11 00:14:34,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:34,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:34,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-11 00:14:34,872 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]=== [2021-06-11 00:14:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:34,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1924882556, now seen corresponding path program 53 times [2021-06-11 00:14:34,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:34,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375344675] [2021-06-11 00:14:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:34,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:34,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:34,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:34,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:34,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:34,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:34,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:34,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:34,910 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:14:34,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:14:34,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:14:34,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:14:34,966 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:14:34,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:14:34,991 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:34,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:35,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375344675] [2021-06-11 00:14:35,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:35,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:35,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712190893] [2021-06-11 00:14:35,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:35,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:35,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:35,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:35,015 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:35,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 941 transitions, 39247 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) [2021-06-11 00:14:35,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:35,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:35,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:39,507 INFO L129 PetriNetUnfolder]: 547/9848 cut-off events. [2021-06-11 00:14:39,507 INFO L130 PetriNetUnfolder]: For 449094/462408 co-relation queries the response was YES. [2021-06-11 00:14:39,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77212 conditions, 9848 events. 547/9848 cut-off events. For 449094/462408 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 175824 event pairs, 523 based on Foata normal form. 84/9440 useless extension candidates. Maximal degree in co-relation 77054. Up to 1828 conditions per place. [2021-06-11 00:14:39,780 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 421 selfloop transitions, 535 changer transitions 2/972 dead transitions. [2021-06-11 00:14:39,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 972 transitions, 42414 flow [2021-06-11 00:14:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:39,781 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:39,781 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:39,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:39,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:39,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:39,782 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) [2021-06-11 00:14:39,783 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) [2021-06-11 00:14:39,783 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) [2021-06-11 00:14:39,783 INFO L185 Difference]: Start difference. First operand has 399 places, 941 transitions, 39247 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:39,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 972 transitions, 42414 flow [2021-06-11 00:14:43,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 972 transitions, 41608 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-11 00:14:43,524 INFO L241 Difference]: Finished difference. Result has 404 places, 945 transitions, 39759 flow [2021-06-11 00:14:43,525 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38451, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=530, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39759, PETRI_PLACES=404, PETRI_TRANSITIONS=945} [2021-06-11 00:14:43,525 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2021-06-11 00:14:43,525 INFO L480 AbstractCegarLoop]: Abstraction has has 404 places, 945 transitions, 39759 flow [2021-06-11 00:14:43,526 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) [2021-06-11 00:14:43,526 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:43,526 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:43,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-11 00:14:43,526 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]=== [2021-06-11 00:14:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:43,526 INFO L82 PathProgramCache]: Analyzing trace with hash 935046624, now seen corresponding path program 54 times [2021-06-11 00:14:43,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:43,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835078220] [2021-06-11 00:14:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:43,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:43,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:43,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:43,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:43,544 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:43,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:43,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:43,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:43,564 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:14:43,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:14:43,593 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:14:43,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:14:43,617 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:14:43,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:14:43,648 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:43,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:43,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835078220] [2021-06-11 00:14:43,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:43,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:43,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272065691] [2021-06-11 00:14:43,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:43,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:43,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:43,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:43,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:43,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 945 transitions, 39759 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) [2021-06-11 00:14:43,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:43,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:43,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:48,301 INFO L129 PetriNetUnfolder]: 547/9840 cut-off events. [2021-06-11 00:14:48,301 INFO L130 PetriNetUnfolder]: For 451003/464317 co-relation queries the response was YES. [2021-06-11 00:14:48,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77746 conditions, 9840 events. 547/9840 cut-off events. For 451003/464317 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 175674 event pairs, 523 based on Foata normal form. 84/9432 useless extension candidates. Maximal degree in co-relation 77587. Up to 1828 conditions per place. [2021-06-11 00:14:48,394 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 417 selfloop transitions, 538 changer transitions 1/970 dead transitions. [2021-06-11 00:14:48,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 970 transitions, 42633 flow [2021-06-11 00:14:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:48,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:48,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:48,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:48,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:48,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:48,399 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) [2021-06-11 00:14:48,400 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) [2021-06-11 00:14:48,400 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) [2021-06-11 00:14:48,400 INFO L185 Difference]: Start difference. First operand has 404 places, 945 transitions, 39759 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:48,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 970 transitions, 42633 flow [2021-06-11 00:14:52,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 970 transitions, 41573 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-11 00:14:52,267 INFO L241 Difference]: Finished difference. Result has 407 places, 961 transitions, 40682 flow [2021-06-11 00:14:52,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38709, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40682, PETRI_PLACES=407, PETRI_TRANSITIONS=961} [2021-06-11 00:14:52,267 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 363 predicate places. [2021-06-11 00:14:52,267 INFO L480 AbstractCegarLoop]: Abstraction has has 407 places, 961 transitions, 40682 flow [2021-06-11 00:14:52,268 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) [2021-06-11 00:14:52,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:14:52,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:14:52,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-11 00:14:52,268 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]=== [2021-06-11 00:14:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:14:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash -69232374, now seen corresponding path program 55 times [2021-06-11 00:14:52,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:14:52,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109856168] [2021-06-11 00:14:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:14:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:14:52,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:52,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:14:52,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:14:52,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:14:52,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:14:52,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:14:52,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:14:52,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:14:52,307 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:14:52,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:14:52,322 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:14:52,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:14:52,342 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:14:52,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:14:52,365 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:14:52,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:14:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:14:52,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109856168] [2021-06-11 00:14:52,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:14:52,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:14:52,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668774190] [2021-06-11 00:14:52,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:14:52,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:14:52,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:14:52,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:14:52,389 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:14:52,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 961 transitions, 40682 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) [2021-06-11 00:14:52,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:14:52,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:14:52,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:14:57,091 INFO L129 PetriNetUnfolder]: 547/9837 cut-off events. [2021-06-11 00:14:57,091 INFO L130 PetriNetUnfolder]: For 453649/466958 co-relation queries the response was YES. [2021-06-11 00:14:57,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77810 conditions, 9837 events. 547/9837 cut-off events. For 453649/466958 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 175636 event pairs, 523 based on Foata normal form. 82/9427 useless extension candidates. Maximal degree in co-relation 77650. Up to 1828 conditions per place. [2021-06-11 00:14:57,192 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 561 changer transitions 1/969 dead transitions. [2021-06-11 00:14:57,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 969 transitions, 42715 flow [2021-06-11 00:14:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:14:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:14:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:14:57,193 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:14:57,193 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:14:57,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:14:57,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:14:57,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:14:57,194 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) [2021-06-11 00:14:57,195 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) [2021-06-11 00:14:57,195 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) [2021-06-11 00:14:57,195 INFO L185 Difference]: Start difference. First operand has 407 places, 961 transitions, 40682 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:14:57,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 969 transitions, 42715 flow [2021-06-11 00:15:01,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 969 transitions, 41706 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-06-11 00:15:01,266 INFO L241 Difference]: Finished difference. Result has 410 places, 960 transitions, 40753 flow [2021-06-11 00:15:01,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39683, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40753, PETRI_PLACES=410, PETRI_TRANSITIONS=960} [2021-06-11 00:15:01,267 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 366 predicate places. [2021-06-11 00:15:01,267 INFO L480 AbstractCegarLoop]: Abstraction has has 410 places, 960 transitions, 40753 flow [2021-06-11 00:15:01,267 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) [2021-06-11 00:15:01,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:01,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:01,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-11 00:15:01,267 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]=== [2021-06-11 00:15:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:01,267 INFO L82 PathProgramCache]: Analyzing trace with hash -551361924, now seen corresponding path program 56 times [2021-06-11 00:15:01,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:01,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94680261] [2021-06-11 00:15:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:01,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:01,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:01,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:01,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:01,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:01,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:01,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:01,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:15:01,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:15:01,371 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:15:01,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:15:01,396 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:15:01,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:15:01,428 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:01,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:01,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94680261] [2021-06-11 00:15:01,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:01,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:01,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752147555] [2021-06-11 00:15:01,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:01,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:01,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:01,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:01,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 960 transitions, 40753 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) [2021-06-11 00:15:01,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:01,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:01,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:15:06,355 INFO L129 PetriNetUnfolder]: 547/9832 cut-off events. [2021-06-11 00:15:06,355 INFO L130 PetriNetUnfolder]: For 453463/466772 co-relation queries the response was YES. [2021-06-11 00:15:06,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77930 conditions, 9832 events. 547/9832 cut-off events. For 453463/466772 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 175499 event pairs, 523 based on Foata normal form. 82/9423 useless extension candidates. Maximal degree in co-relation 77770. Up to 1828 conditions per place. [2021-06-11 00:15:06,460 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 392 selfloop transitions, 561 changer transitions 1/968 dead transitions. [2021-06-11 00:15:06,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 968 transitions, 42784 flow [2021-06-11 00:15:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:15:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:15:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:15:06,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:15:06,462 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:15:06,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:15:06,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:15:06,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:15:06,462 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) [2021-06-11 00:15:06,463 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) [2021-06-11 00:15:06,463 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) [2021-06-11 00:15:06,463 INFO L185 Difference]: Start difference. First operand has 410 places, 960 transitions, 40753 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:15:06,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 968 transitions, 42784 flow [2021-06-11 00:15:10,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 968 transitions, 41673 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:15:10,749 INFO L241 Difference]: Finished difference. Result has 412 places, 959 transitions, 40717 flow [2021-06-11 00:15:10,749 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39652, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40717, PETRI_PLACES=412, PETRI_TRANSITIONS=959} [2021-06-11 00:15:10,749 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2021-06-11 00:15:10,750 INFO L480 AbstractCegarLoop]: Abstraction has has 412 places, 959 transitions, 40717 flow [2021-06-11 00:15:10,750 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) [2021-06-11 00:15:10,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:10,750 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:10,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-11 00:15:10,750 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]=== [2021-06-11 00:15:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1169664100, now seen corresponding path program 57 times [2021-06-11 00:15:10,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:10,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288676307] [2021-06-11 00:15:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:10,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:10,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:10,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:10,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:10,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:10,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:10,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:10,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:10,793 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 00:15:10,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 00:15:10,816 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:15:10,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:15:10,839 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:15:10,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:15:10,865 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:10,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288676307] [2021-06-11 00:15:10,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:10,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:10,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042270770] [2021-06-11 00:15:10,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:10,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:10,907 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:10,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 959 transitions, 40717 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) [2021-06-11 00:15:10,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:10,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:10,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:15:15,639 INFO L129 PetriNetUnfolder]: 547/9828 cut-off events. [2021-06-11 00:15:15,639 INFO L130 PetriNetUnfolder]: For 453259/466573 co-relation queries the response was YES. [2021-06-11 00:15:15,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77928 conditions, 9828 events. 547/9828 cut-off events. For 453259/466573 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 175420 event pairs, 523 based on Foata normal form. 84/9422 useless extension candidates. Maximal degree in co-relation 77768. Up to 1828 conditions per place. [2021-06-11 00:15:15,916 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 391 selfloop transitions, 559 changer transitions 3/967 dead transitions. [2021-06-11 00:15:15,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 967 transitions, 42746 flow [2021-06-11 00:15:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:15:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:15:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:15:15,917 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:15:15,917 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:15:15,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:15:15,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:15:15,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:15:15,918 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) [2021-06-11 00:15:15,918 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) [2021-06-11 00:15:15,919 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) [2021-06-11 00:15:15,919 INFO L185 Difference]: Start difference. First operand has 412 places, 959 transitions, 40717 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:15:15,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 967 transitions, 42746 flow [2021-06-11 00:15:20,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 967 transitions, 41947 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-06-11 00:15:20,054 INFO L241 Difference]: Finished difference. Result has 415 places, 956 transitions, 40886 flow [2021-06-11 00:15:20,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39928, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40886, PETRI_PLACES=415, PETRI_TRANSITIONS=956} [2021-06-11 00:15:20,054 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2021-06-11 00:15:20,054 INFO L480 AbstractCegarLoop]: Abstraction has has 415 places, 956 transitions, 40886 flow [2021-06-11 00:15:20,055 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) [2021-06-11 00:15:20,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:20,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:20,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-11 00:15:20,055 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]=== [2021-06-11 00:15:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:20,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1059679832, now seen corresponding path program 58 times [2021-06-11 00:15:20,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:20,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558024971] [2021-06-11 00:15:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:20,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:20,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:20,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:20,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:20,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:20,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:20,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:20,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:20,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:15:20,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:15:20,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:15:20,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:15:20,132 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:15:20,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:15:20,161 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:20,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:20,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558024971] [2021-06-11 00:15:20,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:20,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:20,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084516298] [2021-06-11 00:15:20,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:20,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:20,200 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:20,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 956 transitions, 40886 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) [2021-06-11 00:15:20,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:20,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:20,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:15:24,934 INFO L129 PetriNetUnfolder]: 547/9811 cut-off events. [2021-06-11 00:15:24,934 INFO L130 PetriNetUnfolder]: For 453099/466413 co-relation queries the response was YES. [2021-06-11 00:15:25,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78063 conditions, 9811 events. 547/9811 cut-off events. For 453099/466413 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 175047 event pairs, 523 based on Foata normal form. 84/9407 useless extension candidates. Maximal degree in co-relation 77904. Up to 1828 conditions per place. [2021-06-11 00:15:25,025 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 536 changer transitions 2/988 dead transitions. [2021-06-11 00:15:25,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 988 transitions, 44130 flow [2021-06-11 00:15:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:15:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:15:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:15:25,026 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:15:25,026 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:15:25,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:15:25,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:15:25,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:15:25,027 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) [2021-06-11 00:15:25,027 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) [2021-06-11 00:15:25,027 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) [2021-06-11 00:15:25,027 INFO L185 Difference]: Start difference. First operand has 415 places, 956 transitions, 40886 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:15:25,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 988 transitions, 44130 flow [2021-06-11 00:15:28,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 988 transitions, 43101 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-11 00:15:28,989 INFO L241 Difference]: Finished difference. Result has 420 places, 973 transitions, 41957 flow [2021-06-11 00:15:28,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39882, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41957, PETRI_PLACES=420, PETRI_TRANSITIONS=973} [2021-06-11 00:15:28,990 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 376 predicate places. [2021-06-11 00:15:28,990 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 973 transitions, 41957 flow [2021-06-11 00:15:28,990 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) [2021-06-11 00:15:28,990 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:28,990 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:28,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-11 00:15:28,991 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]=== [2021-06-11 00:15:28,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:28,991 INFO L82 PathProgramCache]: Analyzing trace with hash -160216324, now seen corresponding path program 59 times [2021-06-11 00:15:28,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:28,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358856394] [2021-06-11 00:15:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:29,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:29,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:29,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:29,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:29,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:29,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:29,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:29,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:29,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:15:29,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:15:29,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:15:29,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:15:29,065 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:15:29,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:15:29,092 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:29,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:29,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358856394] [2021-06-11 00:15:29,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:29,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:29,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055761250] [2021-06-11 00:15:29,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:29,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:29,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:29,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:29,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:29,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 973 transitions, 41957 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) [2021-06-11 00:15:29,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:29,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:29,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:15:33,934 INFO L129 PetriNetUnfolder]: 547/9805 cut-off events. [2021-06-11 00:15:33,934 INFO L130 PetriNetUnfolder]: For 456225/469539 co-relation queries the response was YES. [2021-06-11 00:15:34,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78228 conditions, 9805 events. 547/9805 cut-off events. For 456225/469539 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 174900 event pairs, 523 based on Foata normal form. 84/9402 useless extension candidates. Maximal degree in co-relation 78067. Up to 1828 conditions per place. [2021-06-11 00:15:34,033 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 534 changer transitions 2/986 dead transitions. [2021-06-11 00:15:34,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 986 transitions, 44216 flow [2021-06-11 00:15:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:15:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:15:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:15:34,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:15:34,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:15:34,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:15:34,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:15:34,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:15:34,035 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) [2021-06-11 00:15:34,036 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) [2021-06-11 00:15:34,036 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) [2021-06-11 00:15:34,036 INFO L185 Difference]: Start difference. First operand has 420 places, 973 transitions, 41957 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:15:34,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 986 transitions, 44216 flow [2021-06-11 00:15:38,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 986 transitions, 43194 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-06-11 00:15:38,227 INFO L241 Difference]: Finished difference. Result has 423 places, 971 transitions, 41904 flow [2021-06-11 00:15:38,227 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40945, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41904, PETRI_PLACES=423, PETRI_TRANSITIONS=971} [2021-06-11 00:15:38,227 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2021-06-11 00:15:38,227 INFO L480 AbstractCegarLoop]: Abstraction has has 423 places, 971 transitions, 41904 flow [2021-06-11 00:15:38,228 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) [2021-06-11 00:15:38,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:38,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:38,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-11 00:15:38,228 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]=== [2021-06-11 00:15:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1346889104, now seen corresponding path program 60 times [2021-06-11 00:15:38,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:38,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032107807] [2021-06-11 00:15:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:38,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:38,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:38,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:38,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:38,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:38,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:38,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:38,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:38,271 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:15:38,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:15:38,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:15:38,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:15:38,340 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:15:38,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:15:38,371 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:38,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:38,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032107807] [2021-06-11 00:15:38,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:38,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:38,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389145894] [2021-06-11 00:15:38,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:38,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:38,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:38,402 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:38,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 971 transitions, 41904 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) [2021-06-11 00:15:38,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:38,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:38,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:15:43,430 INFO L129 PetriNetUnfolder]: 547/9796 cut-off events. [2021-06-11 00:15:43,431 INFO L130 PetriNetUnfolder]: For 454916/468230 co-relation queries the response was YES. [2021-06-11 00:15:43,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78259 conditions, 9796 events. 547/9796 cut-off events. For 454916/468230 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 174698 event pairs, 523 based on Foata normal form. 84/9394 useless extension candidates. Maximal degree in co-relation 78098. Up to 1828 conditions per place. [2021-06-11 00:15:43,558 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 433 selfloop transitions, 533 changer transitions 2/982 dead transitions. [2021-06-11 00:15:43,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 982 transitions, 44060 flow [2021-06-11 00:15:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:15:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:15:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:15:43,559 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:15:43,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:15:43,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:15:43,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:15:43,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:15:43,560 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) [2021-06-11 00:15:43,561 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) [2021-06-11 00:15:43,561 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) [2021-06-11 00:15:43,561 INFO L185 Difference]: Start difference. First operand has 423 places, 971 transitions, 41904 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:15:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 982 transitions, 44060 flow [2021-06-11 00:15:47,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 982 transitions, 43003 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-11 00:15:47,630 INFO L241 Difference]: Finished difference. Result has 426 places, 972 transitions, 41953 flow [2021-06-11 00:15:47,631 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40857, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41953, PETRI_PLACES=426, PETRI_TRANSITIONS=972} [2021-06-11 00:15:47,631 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 382 predicate places. [2021-06-11 00:15:47,631 INFO L480 AbstractCegarLoop]: Abstraction has has 426 places, 972 transitions, 41953 flow [2021-06-11 00:15:47,631 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) [2021-06-11 00:15:47,631 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:47,632 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:47,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-11 00:15:47,632 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]=== [2021-06-11 00:15:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1872367036, now seen corresponding path program 61 times [2021-06-11 00:15:47,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:47,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569009884] [2021-06-11 00:15:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:47,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:47,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:47,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:47,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:47,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:47,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:47,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:47,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:47,670 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:15:47,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:15:47,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:15:47,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:15:47,734 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:15:47,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:15:47,762 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:47,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569009884] [2021-06-11 00:15:47,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:47,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:47,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358368049] [2021-06-11 00:15:47,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:47,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:47,794 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:47,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 972 transitions, 41953 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) [2021-06-11 00:15:47,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:47,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:47,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:15:52,737 INFO L129 PetriNetUnfolder]: 547/9788 cut-off events. [2021-06-11 00:15:52,737 INFO L130 PetriNetUnfolder]: For 455464/468778 co-relation queries the response was YES. [2021-06-11 00:15:52,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78231 conditions, 9788 events. 547/9788 cut-off events. For 455464/468778 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 174538 event pairs, 523 based on Foata normal form. 84/9386 useless extension candidates. Maximal degree in co-relation 78069. Up to 1828 conditions per place. [2021-06-11 00:15:52,827 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 432 selfloop transitions, 532 changer transitions 2/980 dead transitions. [2021-06-11 00:15:52,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 980 transitions, 44008 flow [2021-06-11 00:15:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:15:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:15:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:15:52,828 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:15:52,828 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:15:52,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:15:52,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:15:52,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:15:52,829 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) [2021-06-11 00:15:52,829 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) [2021-06-11 00:15:52,829 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) [2021-06-11 00:15:52,829 INFO L185 Difference]: Start difference. First operand has 426 places, 972 transitions, 41953 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:15:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 980 transitions, 44008 flow [2021-06-11 00:15:56,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 980 transitions, 43006 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-06-11 00:15:56,863 INFO L241 Difference]: Finished difference. Result has 429 places, 970 transitions, 41917 flow [2021-06-11 00:15:56,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40961, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41917, PETRI_PLACES=429, PETRI_TRANSITIONS=970} [2021-06-11 00:15:56,864 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 385 predicate places. [2021-06-11 00:15:56,864 INFO L480 AbstractCegarLoop]: Abstraction has has 429 places, 970 transitions, 41917 flow [2021-06-11 00:15:56,864 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) [2021-06-11 00:15:56,864 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:15:56,864 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:15:56,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-11 00:15:56,864 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]=== [2021-06-11 00:15:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:15:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1945478112, now seen corresponding path program 62 times [2021-06-11 00:15:56,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:15:56,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054662766] [2021-06-11 00:15:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:15:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:15:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:56,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:15:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:15:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:15:56,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:15:56,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:15:56,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:15:56,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:15:56,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:15:56,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:15:56,931 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:15:56,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:15:56,969 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:15:56,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:15:57,003 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:15:57,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:15:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:15:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054662766] [2021-06-11 00:15:57,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:15:57,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:15:57,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953172533] [2021-06-11 00:15:57,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:15:57,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:15:57,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:15:57,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:15:57,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:15:57,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 970 transitions, 41917 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) [2021-06-11 00:15:57,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:15:57,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:15:57,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:01,832 INFO L129 PetriNetUnfolder]: 547/9780 cut-off events. [2021-06-11 00:16:01,832 INFO L130 PetriNetUnfolder]: For 454129/467433 co-relation queries the response was YES. [2021-06-11 00:16:01,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78296 conditions, 9780 events. 547/9780 cut-off events. For 454129/467433 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 174368 event pairs, 523 based on Foata normal form. 82/9376 useless extension candidates. Maximal degree in co-relation 78134. Up to 1828 conditions per place. [2021-06-11 00:16:01,923 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 437 selfloop transitions, 530 changer transitions 2/983 dead transitions. [2021-06-11 00:16:01,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 983 transitions, 44185 flow [2021-06-11 00:16:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:01,925 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:01,925 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:01,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:01,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:01,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:01,925 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) [2021-06-11 00:16:01,926 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) [2021-06-11 00:16:01,926 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) [2021-06-11 00:16:01,926 INFO L185 Difference]: Start difference. First operand has 429 places, 970 transitions, 41917 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:01,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 983 transitions, 44185 flow [2021-06-11 00:16:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 983 transitions, 43194 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-11 00:16:06,023 INFO L241 Difference]: Finished difference. Result has 433 places, 973 transitions, 42173 flow [2021-06-11 00:16:06,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40941, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=525, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42173, PETRI_PLACES=433, PETRI_TRANSITIONS=973} [2021-06-11 00:16:06,024 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places. [2021-06-11 00:16:06,024 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 973 transitions, 42173 flow [2021-06-11 00:16:06,024 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) [2021-06-11 00:16:06,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:16:06,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:16:06,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-11 00:16:06,024 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]=== [2021-06-11 00:16:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:16:06,024 INFO L82 PathProgramCache]: Analyzing trace with hash 248327304, now seen corresponding path program 63 times [2021-06-11 00:16:06,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:16:06,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650098501] [2021-06-11 00:16:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:16:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:16:06,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:06,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:16:06,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:06,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:16:06,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:16:06,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:16:06,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:16:06,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:16:06,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:16:06,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:16:06,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:16:06,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:16:06,138 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:16:06,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:16:06,163 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:16:06,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:16:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:16:06,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650098501] [2021-06-11 00:16:06,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:16:06,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:16:06,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755827473] [2021-06-11 00:16:06,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:16:06,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:16:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:16:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:16:06,200 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:16:06,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 973 transitions, 42173 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) [2021-06-11 00:16:06,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:16:06,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:16:06,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:10,865 INFO L129 PetriNetUnfolder]: 547/9772 cut-off events. [2021-06-11 00:16:10,866 INFO L130 PetriNetUnfolder]: For 456880/470189 co-relation queries the response was YES. [2021-06-11 00:16:10,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78431 conditions, 9772 events. 547/9772 cut-off events. For 456880/470189 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 174132 event pairs, 523 based on Foata normal form. 84/9370 useless extension candidates. Maximal degree in co-relation 78268. Up to 1828 conditions per place. [2021-06-11 00:16:10,966 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 438 selfloop transitions, 530 changer transitions 2/984 dead transitions. [2021-06-11 00:16:10,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 984 transitions, 44396 flow [2021-06-11 00:16:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:10,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:10,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:10,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:10,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:10,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:10,969 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) [2021-06-11 00:16:10,969 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) [2021-06-11 00:16:10,969 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) [2021-06-11 00:16:10,969 INFO L185 Difference]: Start difference. First operand has 433 places, 973 transitions, 42173 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:10,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 984 transitions, 44396 flow [2021-06-11 00:16:15,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 984 transitions, 43412 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-11 00:16:15,115 INFO L241 Difference]: Finished difference. Result has 437 places, 974 transitions, 42334 flow [2021-06-11 00:16:15,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41199, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42334, PETRI_PLACES=437, PETRI_TRANSITIONS=974} [2021-06-11 00:16:15,116 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2021-06-11 00:16:15,116 INFO L480 AbstractCegarLoop]: Abstraction has has 437 places, 974 transitions, 42334 flow [2021-06-11 00:16:15,116 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) [2021-06-11 00:16:15,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:16:15,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:16:15,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-11 00:16:15,116 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]=== [2021-06-11 00:16:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:16:15,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2087458452, now seen corresponding path program 64 times [2021-06-11 00:16:15,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:16:15,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008258662] [2021-06-11 00:16:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:16:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:16:15,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:15,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:16:15,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:15,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:16:15,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:16:15,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:16:15,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:16:15,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:16:15,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:16:15,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:16:15,174 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:16:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:16:15,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:16:15,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:16:15,241 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:16:15,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:16:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:16:15,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008258662] [2021-06-11 00:16:15,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:16:15,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:16:15,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016967679] [2021-06-11 00:16:15,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:16:15,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:16:15,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:16:15,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:16:15,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:16:15,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 974 transitions, 42334 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) [2021-06-11 00:16:15,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:16:15,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:16:15,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:20,051 INFO L129 PetriNetUnfolder]: 547/9764 cut-off events. [2021-06-11 00:16:20,052 INFO L130 PetriNetUnfolder]: For 457001/470310 co-relation queries the response was YES. [2021-06-11 00:16:20,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78526 conditions, 9764 events. 547/9764 cut-off events. For 457001/470310 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 174085 event pairs, 523 based on Foata normal form. 84/9362 useless extension candidates. Maximal degree in co-relation 78362. Up to 1828 conditions per place. [2021-06-11 00:16:20,154 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 438 selfloop transitions, 528 changer transitions 2/982 dead transitions. [2021-06-11 00:16:20,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 982 transitions, 44393 flow [2021-06-11 00:16:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:20,155 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:20,155 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:20,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:20,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:20,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:20,156 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) [2021-06-11 00:16:20,157 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) [2021-06-11 00:16:20,157 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) [2021-06-11 00:16:20,157 INFO L185 Difference]: Start difference. First operand has 437 places, 974 transitions, 42334 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:20,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 982 transitions, 44393 flow [2021-06-11 00:16:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 982 transitions, 43341 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-11 00:16:24,288 INFO L241 Difference]: Finished difference. Result has 439 places, 972 transitions, 42248 flow [2021-06-11 00:16:24,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41292, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42248, PETRI_PLACES=439, PETRI_TRANSITIONS=972} [2021-06-11 00:16:24,289 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2021-06-11 00:16:24,289 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 972 transitions, 42248 flow [2021-06-11 00:16:24,289 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) [2021-06-11 00:16:24,289 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:16:24,289 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:16:24,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-11 00:16:24,289 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]=== [2021-06-11 00:16:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:16:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1851813480, now seen corresponding path program 65 times [2021-06-11 00:16:24,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:16:24,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217990698] [2021-06-11 00:16:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:16:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:16:24,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:16:24,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:16:24,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:16:24,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:16:24,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:16:24,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:16:24,323 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:16:24,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:16:24,351 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:16:24,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:16:24,375 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:16:24,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:16:24,406 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:16:24,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:16:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:16:24,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217990698] [2021-06-11 00:16:24,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:16:24,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:16:24,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832224531] [2021-06-11 00:16:24,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:16:24,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:16:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:16:24,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:16:24,432 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:16:24,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 972 transitions, 42248 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) [2021-06-11 00:16:24,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:16:24,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:16:24,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:29,252 INFO L129 PetriNetUnfolder]: 547/9756 cut-off events. [2021-06-11 00:16:29,252 INFO L130 PetriNetUnfolder]: For 456394/469703 co-relation queries the response was YES. [2021-06-11 00:16:29,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78480 conditions, 9756 events. 547/9756 cut-off events. For 456394/469703 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 173914 event pairs, 523 based on Foata normal form. 84/9354 useless extension candidates. Maximal degree in co-relation 78316. Up to 1828 conditions per place. [2021-06-11 00:16:29,343 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 425 selfloop transitions, 539 changer transitions 2/980 dead transitions. [2021-06-11 00:16:29,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 980 transitions, 44303 flow [2021-06-11 00:16:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:29,344 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:29,344 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:29,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:29,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:29,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:29,345 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) [2021-06-11 00:16:29,345 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) [2021-06-11 00:16:29,345 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) [2021-06-11 00:16:29,345 INFO L185 Difference]: Start difference. First operand has 439 places, 972 transitions, 42248 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:29,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 980 transitions, 44303 flow [2021-06-11 00:16:33,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 980 transitions, 43229 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-11 00:16:33,325 INFO L241 Difference]: Finished difference. Result has 440 places, 970 transitions, 42148 flow [2021-06-11 00:16:33,326 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41184, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42148, PETRI_PLACES=440, PETRI_TRANSITIONS=970} [2021-06-11 00:16:33,326 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 396 predicate places. [2021-06-11 00:16:33,326 INFO L480 AbstractCegarLoop]: Abstraction has has 440 places, 970 transitions, 42148 flow [2021-06-11 00:16:33,326 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) [2021-06-11 00:16:33,326 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:16:33,326 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:16:33,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-11 00:16:33,326 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]=== [2021-06-11 00:16:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:16:33,327 INFO L82 PathProgramCache]: Analyzing trace with hash -367275996, now seen corresponding path program 66 times [2021-06-11 00:16:33,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:16:33,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241977105] [2021-06-11 00:16:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:16:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:16:33,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:33,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:16:33,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:33,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:16:33,344 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:16:33,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:16:33,353 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:16:33,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:16:33,366 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:16:33,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:16:33,383 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:16:33,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:16:33,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:16:33,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:16:33,433 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:16:33,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:16:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:16:33,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241977105] [2021-06-11 00:16:33,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:16:33,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:16:33,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977558186] [2021-06-11 00:16:33,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:16:33,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:16:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:16:33,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:16:33,463 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:16:33,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 970 transitions, 42148 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) [2021-06-11 00:16:33,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:16:33,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:16:33,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:38,380 INFO L129 PetriNetUnfolder]: 523/9962 cut-off events. [2021-06-11 00:16:38,380 INFO L130 PetriNetUnfolder]: For 465010/478319 co-relation queries the response was YES. [2021-06-11 00:16:38,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79946 conditions, 9962 events. 523/9962 cut-off events. For 465010/478319 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 178767 event pairs, 523 based on Foata normal form. 66/9535 useless extension candidates. Maximal degree in co-relation 79783. Up to 1766 conditions per place. [2021-06-11 00:16:38,471 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 581 selfloop transitions, 497 changer transitions 1/1093 dead transitions. [2021-06-11 00:16:38,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1093 transitions, 50047 flow [2021-06-11 00:16:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:38,472 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:38,472 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:38,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:38,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:38,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:38,473 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) [2021-06-11 00:16:38,474 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) [2021-06-11 00:16:38,474 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) [2021-06-11 00:16:38,474 INFO L185 Difference]: Start difference. First operand has 440 places, 970 transitions, 42148 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:38,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1093 transitions, 50047 flow [2021-06-11 00:16:42,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1093 transitions, 49112 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-11 00:16:42,539 INFO L241 Difference]: Finished difference. Result has 447 places, 1004 transitions, 44257 flow [2021-06-11 00:16:42,540 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41268, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44257, PETRI_PLACES=447, PETRI_TRANSITIONS=1004} [2021-06-11 00:16:42,540 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2021-06-11 00:16:42,540 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 1004 transitions, 44257 flow [2021-06-11 00:16:42,540 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) [2021-06-11 00:16:42,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:16:42,540 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:16:42,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-11 00:16:42,540 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]=== [2021-06-11 00:16:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:16:42,541 INFO L82 PathProgramCache]: Analyzing trace with hash 953425414, now seen corresponding path program 67 times [2021-06-11 00:16:42,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:16:42,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245387307] [2021-06-11 00:16:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:16:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:16:42,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:42,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:16:42,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:16:42,555 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:16:42,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:16:42,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:16:42,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:16:42,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:16:42,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:16:42,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:16:42,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:16:42,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:16:42,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:16:42,651 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:16:42,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:16:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:16:42,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245387307] [2021-06-11 00:16:42,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:16:42,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:16:42,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012554963] [2021-06-11 00:16:42,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:16:42,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:16:42,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:16:42,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:16:42,674 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:16:42,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1004 transitions, 44257 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) [2021-06-11 00:16:42,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:16:42,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:16:42,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:47,627 INFO L129 PetriNetUnfolder]: 523/9955 cut-off events. [2021-06-11 00:16:47,628 INFO L130 PetriNetUnfolder]: For 477600/490953 co-relation queries the response was YES. [2021-06-11 00:16:47,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80652 conditions, 9955 events. 523/9955 cut-off events. For 477600/490953 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 178654 event pairs, 523 based on Foata normal form. 84/9538 useless extension candidates. Maximal degree in co-relation 80485. Up to 1828 conditions per place. [2021-06-11 00:16:47,729 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 477 selfloop transitions, 544 changer transitions 1/1036 dead transitions. [2021-06-11 00:16:47,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1036 transitions, 47685 flow [2021-06-11 00:16:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:47,730 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:47,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:47,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:47,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:47,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:47,731 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) [2021-06-11 00:16:47,732 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) [2021-06-11 00:16:47,732 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) [2021-06-11 00:16:47,732 INFO L185 Difference]: Start difference. First operand has 447 places, 1004 transitions, 44257 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:47,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1036 transitions, 47685 flow [2021-06-11 00:16:52,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1036 transitions, 46882 flow, removed 34 selfloop flow, removed 5 redundant places. [2021-06-11 00:16:52,388 INFO L241 Difference]: Finished difference. Result has 452 places, 1007 transitions, 44878 flow [2021-06-11 00:16:52,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43471, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44878, PETRI_PLACES=452, PETRI_TRANSITIONS=1007} [2021-06-11 00:16:52,388 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2021-06-11 00:16:52,388 INFO L480 AbstractCegarLoop]: Abstraction has has 452 places, 1007 transitions, 44878 flow [2021-06-11 00:16:52,388 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) [2021-06-11 00:16:52,389 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:16:52,389 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:16:52,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-11 00:16:52,389 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]=== [2021-06-11 00:16:52,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:16:52,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2136229728, now seen corresponding path program 68 times [2021-06-11 00:16:52,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:16:52,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636165347] [2021-06-11 00:16:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:16:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:16:52,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:52,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:16:52,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:16:52,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:16:52,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:16:52,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:16:52,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:16:52,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:16:52,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:16:52,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:16:52,441 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:16:52,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:16:52,463 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:16:52,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:16:52,492 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:16:52,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:16:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:16:52,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636165347] [2021-06-11 00:16:52,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:16:52,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:16:52,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091301514] [2021-06-11 00:16:52,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:16:52,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:16:52,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:16:52,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:16:52,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:16:52,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1007 transitions, 44878 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) [2021-06-11 00:16:52,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:16:52,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:16:52,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:16:57,647 INFO L129 PetriNetUnfolder]: 523/9948 cut-off events. [2021-06-11 00:16:57,648 INFO L130 PetriNetUnfolder]: For 485525/500979 co-relation queries the response was YES. [2021-06-11 00:16:57,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81194 conditions, 9948 events. 523/9948 cut-off events. For 485525/500979 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 178398 event pairs, 523 based on Foata normal form. 96/9543 useless extension candidates. Maximal degree in co-relation 81026. Up to 1828 conditions per place. [2021-06-11 00:16:57,739 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 474 selfloop transitions, 545 changer transitions 2/1035 dead transitions. [2021-06-11 00:16:57,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 1035 transitions, 48120 flow [2021-06-11 00:16:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:16:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:16:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:16:57,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:16:57,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:16:57,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:16:57,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:16:57,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:16:57,741 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) [2021-06-11 00:16:57,742 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) [2021-06-11 00:16:57,742 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) [2021-06-11 00:16:57,742 INFO L185 Difference]: Start difference. First operand has 452 places, 1007 transitions, 44878 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:16:57,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 1035 transitions, 48120 flow [2021-06-11 00:17:02,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1035 transitions, 47123 flow, removed 31 selfloop flow, removed 6 redundant places. [2021-06-11 00:17:02,341 INFO L241 Difference]: Finished difference. Result has 455 places, 1010 transitions, 45183 flow [2021-06-11 00:17:02,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43891, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45183, PETRI_PLACES=455, PETRI_TRANSITIONS=1010} [2021-06-11 00:17:02,342 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 411 predicate places. [2021-06-11 00:17:02,342 INFO L480 AbstractCegarLoop]: Abstraction has has 455 places, 1010 transitions, 45183 flow [2021-06-11 00:17:02,342 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) [2021-06-11 00:17:02,342 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:17:02,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:17:02,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-11 00:17:02,342 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]=== [2021-06-11 00:17:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:17:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash -558299714, now seen corresponding path program 69 times [2021-06-11 00:17:02,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:17:02,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267272416] [2021-06-11 00:17:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:17:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:17:02,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:02,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:17:02,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:02,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:17:02,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:17:02,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:17:02,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:17:02,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:17:02,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:17:02,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:17:02,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:17:02,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:17:02,411 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:17:02,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:17:02,435 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:17:02,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:17:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:17:02,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267272416] [2021-06-11 00:17:02,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:17:02,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:17:02,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605720604] [2021-06-11 00:17:02,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:17:02,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:17:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:17:02,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:17:02,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:17:02,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1010 transitions, 45183 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) [2021-06-11 00:17:02,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:17:02,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:17:02,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:17:07,389 INFO L129 PetriNetUnfolder]: 523/9940 cut-off events. [2021-06-11 00:17:07,390 INFO L130 PetriNetUnfolder]: For 480538/495992 co-relation queries the response was YES. [2021-06-11 00:17:07,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81511 conditions, 9940 events. 523/9940 cut-off events. For 480538/495992 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 178285 event pairs, 523 based on Foata normal form. 96/9535 useless extension candidates. Maximal degree in co-relation 81344. Up to 1828 conditions per place. [2021-06-11 00:17:07,500 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 455 selfloop transitions, 563 changer transitions 1/1033 dead transitions. [2021-06-11 00:17:07,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1033 transitions, 48131 flow [2021-06-11 00:17:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:17:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:17:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:17:07,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:17:07,501 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:17:07,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:17:07,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:17:07,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:17:07,501 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) [2021-06-11 00:17:07,672 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) [2021-06-11 00:17:07,673 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) [2021-06-11 00:17:07,673 INFO L185 Difference]: Start difference. First operand has 455 places, 1010 transitions, 45183 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:17:07,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1033 transitions, 48131 flow [2021-06-11 00:17:12,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1033 transitions, 47044 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-11 00:17:12,240 INFO L241 Difference]: Finished difference. Result has 458 places, 1024 transitions, 46035 flow [2021-06-11 00:17:12,240 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44106, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46035, PETRI_PLACES=458, PETRI_TRANSITIONS=1024} [2021-06-11 00:17:12,240 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2021-06-11 00:17:12,241 INFO L480 AbstractCegarLoop]: Abstraction has has 458 places, 1024 transitions, 46035 flow [2021-06-11 00:17:12,241 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) [2021-06-11 00:17:12,241 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:17:12,241 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:17:12,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-11 00:17:12,241 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]=== [2021-06-11 00:17:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:17:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash -20444136, now seen corresponding path program 70 times [2021-06-11 00:17:12,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:17:12,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34652091] [2021-06-11 00:17:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:17:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:17:12,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:12,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:17:12,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:12,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:17:12,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:17:12,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:17:12,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:17:12,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:17:12,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:17:12,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:17:12,295 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:17:12,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:17:12,318 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:17:12,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:17:12,343 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:17:12,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:17:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:17:12,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34652091] [2021-06-11 00:17:12,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:17:12,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:17:12,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931788059] [2021-06-11 00:17:12,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:17:12,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:17:12,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:17:12,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:17:12,368 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:17:12,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1024 transitions, 46035 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) [2021-06-11 00:17:12,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:17:12,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:17:12,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:17:17,361 INFO L129 PetriNetUnfolder]: 523/9935 cut-off events. [2021-06-11 00:17:17,361 INFO L130 PetriNetUnfolder]: For 483568/499017 co-relation queries the response was YES. [2021-06-11 00:17:17,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81568 conditions, 9935 events. 523/9935 cut-off events. For 483568/499017 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 178163 event pairs, 523 based on Foata normal form. 94/9529 useless extension candidates. Maximal degree in co-relation 81400. Up to 1828 conditions per place. [2021-06-11 00:17:17,457 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 457 selfloop transitions, 559 changer transitions 2/1032 dead transitions. [2021-06-11 00:17:17,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1032 transitions, 48224 flow [2021-06-11 00:17:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:17:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:17:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:17:17,459 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:17:17,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:17:17,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:17:17,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:17:17,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:17:17,459 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) [2021-06-11 00:17:17,460 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) [2021-06-11 00:17:17,460 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) [2021-06-11 00:17:17,460 INFO L185 Difference]: Start difference. First operand has 458 places, 1024 transitions, 46035 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:17:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1032 transitions, 48224 flow [2021-06-11 00:17:22,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1032 transitions, 47185 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-11 00:17:22,500 INFO L241 Difference]: Finished difference. Result has 462 places, 1023 transitions, 46081 flow [2021-06-11 00:17:22,502 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45006, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46081, PETRI_PLACES=462, PETRI_TRANSITIONS=1023} [2021-06-11 00:17:22,502 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 418 predicate places. [2021-06-11 00:17:22,502 INFO L480 AbstractCegarLoop]: Abstraction has has 462 places, 1023 transitions, 46081 flow [2021-06-11 00:17:22,502 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) [2021-06-11 00:17:22,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:17:22,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:17:22,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-11 00:17:22,503 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]=== [2021-06-11 00:17:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:17:22,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1751411010, now seen corresponding path program 71 times [2021-06-11 00:17:22,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:17:22,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461502840] [2021-06-11 00:17:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:17:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:17:22,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:22,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:17:22,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:22,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:17:22,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:17:22,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:17:22,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:17:22,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:17:22,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:17:22,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:17:22,558 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:17:22,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:17:22,593 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:17:22,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:17:22,621 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:17:22,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:17:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:17:22,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461502840] [2021-06-11 00:17:22,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:17:22,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:17:22,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678708073] [2021-06-11 00:17:22,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:17:22,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:17:22,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:17:22,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:17:22,645 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:17:22,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1023 transitions, 46081 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) [2021-06-11 00:17:22,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:17:22,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:17:22,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:17:27,926 INFO L129 PetriNetUnfolder]: 523/9925 cut-off events. [2021-06-11 00:17:27,926 INFO L130 PetriNetUnfolder]: For 482174/495603 co-relation queries the response was YES. [2021-06-11 00:17:27,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81603 conditions, 9925 events. 523/9925 cut-off events. For 482174/495603 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 177829 event pairs, 523 based on Foata normal form. 94/9519 useless extension candidates. Maximal degree in co-relation 81434. Up to 1828 conditions per place. [2021-06-11 00:17:28,018 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 470 selfloop transitions, 544 changer transitions 2/1030 dead transitions. [2021-06-11 00:17:28,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1030 transitions, 48221 flow [2021-06-11 00:17:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:17:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:17:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:17:28,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:17:28,020 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:17:28,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:17:28,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:17:28,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:17:28,021 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) [2021-06-11 00:17:28,021 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) [2021-06-11 00:17:28,021 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) [2021-06-11 00:17:28,021 INFO L185 Difference]: Start difference. First operand has 462 places, 1023 transitions, 46081 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:17:28,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1030 transitions, 48221 flow [2021-06-11 00:17:32,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1030 transitions, 47316 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-11 00:17:32,639 INFO L241 Difference]: Finished difference. Result has 466 places, 1023 transitions, 46300 flow [2021-06-11 00:17:32,640 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45186, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46300, PETRI_PLACES=466, PETRI_TRANSITIONS=1023} [2021-06-11 00:17:32,640 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 422 predicate places. [2021-06-11 00:17:32,640 INFO L480 AbstractCegarLoop]: Abstraction has has 466 places, 1023 transitions, 46300 flow [2021-06-11 00:17:32,640 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) [2021-06-11 00:17:32,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:17:32,640 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:17:32,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-11 00:17:32,640 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]=== [2021-06-11 00:17:32,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:17:32,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1349280428, now seen corresponding path program 72 times [2021-06-11 00:17:32,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:17:32,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112877738] [2021-06-11 00:17:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:17:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:17:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:32,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:17:32,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:32,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:17:32,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:17:32,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:17:32,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:17:32,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:17:32,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:17:32,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:17:32,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:17:32,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:17:32,736 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:17:32,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:17:32,760 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:17:32,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:17:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:17:32,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112877738] [2021-06-11 00:17:32,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:17:32,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:17:32,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993649026] [2021-06-11 00:17:32,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:17:32,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:17:32,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:17:32,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:17:32,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:17:32,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1023 transitions, 46300 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) [2021-06-11 00:17:32,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:17:32,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:17:32,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:17:37,796 INFO L129 PetriNetUnfolder]: 523/9917 cut-off events. [2021-06-11 00:17:37,796 INFO L130 PetriNetUnfolder]: For 485489/498923 co-relation queries the response was YES. [2021-06-11 00:17:37,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81985 conditions, 9917 events. 523/9917 cut-off events. For 485489/498923 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 177704 event pairs, 523 based on Foata normal form. 96/9513 useless extension candidates. Maximal degree in co-relation 81815. Up to 1828 conditions per place. [2021-06-11 00:17:37,898 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 472 selfloop transitions, 541 changer transitions 1/1028 dead transitions. [2021-06-11 00:17:37,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1028 transitions, 48348 flow [2021-06-11 00:17:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:17:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:17:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:17:37,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:17:37,899 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:17:37,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:17:37,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:17:37,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:17:37,900 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) [2021-06-11 00:17:37,900 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) [2021-06-11 00:17:37,900 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) [2021-06-11 00:17:37,900 INFO L185 Difference]: Start difference. First operand has 466 places, 1023 transitions, 46300 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:17:37,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1028 transitions, 48348 flow [2021-06-11 00:17:42,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1028 transitions, 47301 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-06-11 00:17:42,620 INFO L241 Difference]: Finished difference. Result has 469 places, 1022 transitions, 46275 flow [2021-06-11 00:17:42,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45263, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46275, PETRI_PLACES=469, PETRI_TRANSITIONS=1022} [2021-06-11 00:17:42,621 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 425 predicate places. [2021-06-11 00:17:42,621 INFO L480 AbstractCegarLoop]: Abstraction has has 469 places, 1022 transitions, 46275 flow [2021-06-11 00:17:42,621 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) [2021-06-11 00:17:42,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:17:42,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:17:42,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-11 00:17:42,621 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]=== [2021-06-11 00:17:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:17:42,621 INFO L82 PathProgramCache]: Analyzing trace with hash -757023354, now seen corresponding path program 73 times [2021-06-11 00:17:42,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:17:42,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122617348] [2021-06-11 00:17:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:17:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:17:42,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:42,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:17:42,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:42,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:17:42,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:17:42,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:17:42,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:17:42,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:17:42,656 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:17:42,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:17:42,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:17:42,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:17:42,700 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:17:42,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:17:42,724 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:17:42,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:17:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:17:42,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122617348] [2021-06-11 00:17:42,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:17:42,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:17:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20338524] [2021-06-11 00:17:42,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:17:42,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:17:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:17:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:17:42,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:17:42,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1022 transitions, 46275 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) [2021-06-11 00:17:42,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:17:42,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:17:42,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:17:47,876 INFO L129 PetriNetUnfolder]: 523/9910 cut-off events. [2021-06-11 00:17:47,876 INFO L130 PetriNetUnfolder]: For 484548/497982 co-relation queries the response was YES. [2021-06-11 00:17:47,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82054 conditions, 9910 events. 523/9910 cut-off events. For 484548/497982 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 177564 event pairs, 523 based on Foata normal form. 74/9484 useless extension candidates. Maximal degree in co-relation 81884. Up to 1720 conditions per place. [2021-06-11 00:17:47,969 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 497 selfloop transitions, 550 changer transitions 2/1063 dead transitions. [2021-06-11 00:17:47,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1063 transitions, 49881 flow [2021-06-11 00:17:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:17:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:17:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:17:47,970 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:17:47,970 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:17:47,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:17:47,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:17:47,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:17:47,971 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) [2021-06-11 00:17:47,971 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) [2021-06-11 00:17:47,972 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) [2021-06-11 00:17:47,972 INFO L185 Difference]: Start difference. First operand has 469 places, 1022 transitions, 46275 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:17:47,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1063 transitions, 49881 flow [2021-06-11 00:17:52,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1063 transitions, 48765 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:17:52,553 INFO L241 Difference]: Finished difference. Result has 473 places, 1033 transitions, 46862 flow [2021-06-11 00:17:52,554 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45203, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46862, PETRI_PLACES=473, PETRI_TRANSITIONS=1033} [2021-06-11 00:17:52,554 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 429 predicate places. [2021-06-11 00:17:52,554 INFO L480 AbstractCegarLoop]: Abstraction has has 473 places, 1033 transitions, 46862 flow [2021-06-11 00:17:52,554 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) [2021-06-11 00:17:52,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:17:52,555 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:17:52,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-11 00:17:52,555 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]=== [2021-06-11 00:17:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:17:52,555 INFO L82 PathProgramCache]: Analyzing trace with hash -177274904, now seen corresponding path program 74 times [2021-06-11 00:17:52,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:17:52,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85220395] [2021-06-11 00:17:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:17:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:17:52,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:52,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:17:52,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:17:52,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:17:52,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:17:52,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:17:52,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:17:52,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:17:52,591 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:17:52,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:17:52,620 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:17:52,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:17:52,644 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:17:52,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:17:52,673 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:17:52,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:17:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:17:52,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85220395] [2021-06-11 00:17:52,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:17:52,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:17:52,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023911745] [2021-06-11 00:17:52,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:17:52,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:17:52,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:17:52,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:17:52,697 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:17:52,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1033 transitions, 46862 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) [2021-06-11 00:17:52,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:17:52,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:17:52,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:17:57,766 INFO L129 PetriNetUnfolder]: 523/9902 cut-off events. [2021-06-11 00:17:57,767 INFO L130 PetriNetUnfolder]: For 490794/504228 co-relation queries the response was YES. [2021-06-11 00:17:57,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82293 conditions, 9902 events. 523/9902 cut-off events. For 490794/504228 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 177452 event pairs, 523 based on Foata normal form. 74/9473 useless extension candidates. Maximal degree in co-relation 82121. Up to 1720 conditions per place. [2021-06-11 00:17:57,871 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 491 selfloop transitions, 549 changer transitions 1/1055 dead transitions. [2021-06-11 00:17:57,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1055 transitions, 49657 flow [2021-06-11 00:17:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:17:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:17:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:17:57,872 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:17:57,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:17:57,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:17:57,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:17:57,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:17:57,873 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) [2021-06-11 00:17:57,874 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) [2021-06-11 00:17:57,874 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) [2021-06-11 00:17:57,874 INFO L185 Difference]: Start difference. First operand has 473 places, 1033 transitions, 46862 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:17:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1055 transitions, 49657 flow [2021-06-11 00:18:02,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1055 transitions, 48667 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-11 00:18:02,643 INFO L241 Difference]: Finished difference. Result has 477 places, 1034 transitions, 47059 flow [2021-06-11 00:18:02,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45882, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47059, PETRI_PLACES=477, PETRI_TRANSITIONS=1034} [2021-06-11 00:18:02,643 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 433 predicate places. [2021-06-11 00:18:02,643 INFO L480 AbstractCegarLoop]: Abstraction has has 477 places, 1034 transitions, 47059 flow [2021-06-11 00:18:02,643 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) [2021-06-11 00:18:02,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:18:02,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:18:02,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-11 00:18:02,644 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]=== [2021-06-11 00:18:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:18:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1457430648, now seen corresponding path program 75 times [2021-06-11 00:18:02,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:18:02,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742111144] [2021-06-11 00:18:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:18:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:18:02,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:02,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:18:02,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:02,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:18:02,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:18:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:18:02,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:18:02,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:18:02,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:18:02,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:18:02,687 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:18:02,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:18:02,706 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:18:02,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:18:02,730 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:18:02,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:18:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:18:02,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742111144] [2021-06-11 00:18:02,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:18:02,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:18:02,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841076689] [2021-06-11 00:18:02,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:18:02,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:18:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:18:02,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:18:02,754 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:18:02,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1034 transitions, 47059 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) [2021-06-11 00:18:02,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:18:02,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:18:02,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:18:07,917 INFO L129 PetriNetUnfolder]: 523/9898 cut-off events. [2021-06-11 00:18:07,917 INFO L130 PetriNetUnfolder]: For 491369/504803 co-relation queries the response was YES. [2021-06-11 00:18:07,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82457 conditions, 9898 events. 523/9898 cut-off events. For 491369/504803 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 177357 event pairs, 523 based on Foata normal form. 74/9470 useless extension candidates. Maximal degree in co-relation 82284. Up to 1720 conditions per place. [2021-06-11 00:18:08,015 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 521 selfloop transitions, 543 changer transitions 1/1079 dead transitions. [2021-06-11 00:18:08,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1079 transitions, 51016 flow [2021-06-11 00:18:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:18:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:18:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:18:08,016 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:18:08,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:18:08,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:18:08,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:18:08,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:18:08,016 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) [2021-06-11 00:18:08,017 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) [2021-06-11 00:18:08,017 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) [2021-06-11 00:18:08,017 INFO L185 Difference]: Start difference. First operand has 477 places, 1034 transitions, 47059 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:18:08,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1079 transitions, 51016 flow [2021-06-11 00:18:12,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1079 transitions, 50041 flow, removed 57 selfloop flow, removed 5 redundant places. [2021-06-11 00:18:12,860 INFO L241 Difference]: Finished difference. Result has 482 places, 1063 transitions, 48741 flow [2021-06-11 00:18:12,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46114, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48741, PETRI_PLACES=482, PETRI_TRANSITIONS=1063} [2021-06-11 00:18:12,861 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 438 predicate places. [2021-06-11 00:18:12,861 INFO L480 AbstractCegarLoop]: Abstraction has has 482 places, 1063 transitions, 48741 flow [2021-06-11 00:18:12,861 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) [2021-06-11 00:18:12,861 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:18:12,861 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:18:12,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-11 00:18:12,861 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]=== [2021-06-11 00:18:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:18:12,861 INFO L82 PathProgramCache]: Analyzing trace with hash 850628048, now seen corresponding path program 76 times [2021-06-11 00:18:12,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:18:12,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099737726] [2021-06-11 00:18:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:18:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:18:12,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:12,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:18:12,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:12,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:18:12,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:18:12,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:18:12,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:18:12,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:18:12,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:18:12,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:18:12,908 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:18:12,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:18:12,932 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:18:12,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:18:12,957 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:18:12,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:18:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:18:12,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099737726] [2021-06-11 00:18:12,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:18:12,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:18:12,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093506854] [2021-06-11 00:18:12,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:18:12,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:18:12,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:18:12,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:18:12,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:18:12,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 1063 transitions, 48741 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) [2021-06-11 00:18:12,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:18:12,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:18:12,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:18:18,391 INFO L129 PetriNetUnfolder]: 523/9892 cut-off events. [2021-06-11 00:18:18,391 INFO L130 PetriNetUnfolder]: For 501848/515282 co-relation queries the response was YES. [2021-06-11 00:18:18,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83333 conditions, 9892 events. 523/9892 cut-off events. For 501848/515282 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 177254 event pairs, 523 based on Foata normal form. 74/9486 useless extension candidates. Maximal degree in co-relation 83159. Up to 1720 conditions per place. [2021-06-11 00:18:18,485 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 520 selfloop transitions, 541 changer transitions 3/1078 dead transitions. [2021-06-11 00:18:18,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1078 transitions, 51400 flow [2021-06-11 00:18:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:18:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:18:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:18:18,486 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:18:18,486 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:18:18,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:18:18,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:18:18,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:18:18,487 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) [2021-06-11 00:18:18,487 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) [2021-06-11 00:18:18,487 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) [2021-06-11 00:18:18,488 INFO L185 Difference]: Start difference. First operand has 482 places, 1063 transitions, 48741 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:18:18,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1078 transitions, 51400 flow [2021-06-11 00:18:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1078 transitions, 50528 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-06-11 00:18:23,566 INFO L241 Difference]: Finished difference. Result has 486 places, 1064 transitions, 49079 flow [2021-06-11 00:18:23,567 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47879, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49079, PETRI_PLACES=486, PETRI_TRANSITIONS=1064} [2021-06-11 00:18:23,567 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2021-06-11 00:18:23,567 INFO L480 AbstractCegarLoop]: Abstraction has has 486 places, 1064 transitions, 49079 flow [2021-06-11 00:18:23,567 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) [2021-06-11 00:18:23,567 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:18:23,567 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:18:23,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-11 00:18:23,567 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]=== [2021-06-11 00:18:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:18:23,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1514833396, now seen corresponding path program 77 times [2021-06-11 00:18:23,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:18:23,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308023087] [2021-06-11 00:18:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:18:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:18:23,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:23,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:18:23,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:23,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:18:23,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:18:23,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:18:23,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:18:23,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:18:23,604 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:18:23,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:18:23,630 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:18:23,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:18:23,663 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:18:23,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:18:23,688 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:18:23,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:18:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:18:23,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308023087] [2021-06-11 00:18:23,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:18:23,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:18:23,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220081898] [2021-06-11 00:18:23,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:18:23,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:18:23,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:18:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:18:23,712 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:18:23,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1064 transitions, 49079 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) [2021-06-11 00:18:23,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:18:23,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:18:23,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:18:28,954 INFO L129 PetriNetUnfolder]: 523/9882 cut-off events. [2021-06-11 00:18:28,954 INFO L130 PetriNetUnfolder]: For 501420/514840 co-relation queries the response was YES. [2021-06-11 00:18:29,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83732 conditions, 9882 events. 523/9882 cut-off events. For 501420/514840 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 176998 event pairs, 523 based on Foata normal form. 74/9476 useless extension candidates. Maximal degree in co-relation 83558. Up to 1720 conditions per place. [2021-06-11 00:18:29,056 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 519 selfloop transitions, 540 changer transitions 2/1075 dead transitions. [2021-06-11 00:18:29,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1075 transitions, 51511 flow [2021-06-11 00:18:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:18:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:18:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:18:29,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:18:29,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:18:29,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:18:29,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:18:29,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:18:29,058 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) [2021-06-11 00:18:29,058 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) [2021-06-11 00:18:29,058 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) [2021-06-11 00:18:29,058 INFO L185 Difference]: Start difference. First operand has 486 places, 1064 transitions, 49079 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:18:29,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1075 transitions, 51511 flow [2021-06-11 00:18:34,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1075 transitions, 50449 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-11 00:18:34,092 INFO L241 Difference]: Finished difference. Result has 488 places, 1062 transitions, 49006 flow [2021-06-11 00:18:34,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48027, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=540, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49006, PETRI_PLACES=488, PETRI_TRANSITIONS=1062} [2021-06-11 00:18:34,093 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 444 predicate places. [2021-06-11 00:18:34,093 INFO L480 AbstractCegarLoop]: Abstraction has has 488 places, 1062 transitions, 49006 flow [2021-06-11 00:18:34,093 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) [2021-06-11 00:18:34,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:18:34,094 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:18:34,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-11 00:18:34,094 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]=== [2021-06-11 00:18:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:18:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1025901608, now seen corresponding path program 78 times [2021-06-11 00:18:34,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:18:34,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935381346] [2021-06-11 00:18:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:18:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:18:34,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:34,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:18:34,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:34,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:18:34,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:18:34,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:18:34,119 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:18:34,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:18:34,132 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:18:34,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:18:34,160 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:18:34,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:18:34,182 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:18:34,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:18:34,210 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:18:34,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:18:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:18:34,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935381346] [2021-06-11 00:18:34,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:18:34,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:18:34,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717092524] [2021-06-11 00:18:34,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:18:34,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:18:34,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:18:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:18:34,238 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:18:34,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1062 transitions, 49006 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) [2021-06-11 00:18:34,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:18:34,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:18:34,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:18:39,523 INFO L129 PetriNetUnfolder]: 523/9873 cut-off events. [2021-06-11 00:18:39,523 INFO L130 PetriNetUnfolder]: For 500726/514146 co-relation queries the response was YES. [2021-06-11 00:18:39,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83678 conditions, 9873 events. 523/9873 cut-off events. For 500726/514146 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 176715 event pairs, 523 based on Foata normal form. 74/9468 useless extension candidates. Maximal degree in co-relation 83504. Up to 1720 conditions per place. [2021-06-11 00:18:39,618 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 511 selfloop transitions, 546 changer transitions 2/1073 dead transitions. [2021-06-11 00:18:39,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 1073 transitions, 51434 flow [2021-06-11 00:18:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:18:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:18:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:18:39,619 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:18:39,619 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:18:39,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:18:39,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:18:39,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:18:39,619 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) [2021-06-11 00:18:39,620 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) [2021-06-11 00:18:39,620 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) [2021-06-11 00:18:39,620 INFO L185 Difference]: Start difference. First operand has 488 places, 1062 transitions, 49006 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:18:39,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 1073 transitions, 51434 flow [2021-06-11 00:18:44,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1073 transitions, 50366 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-11 00:18:44,767 INFO L241 Difference]: Finished difference. Result has 491 places, 1062 transitions, 49058 flow [2021-06-11 00:18:44,767 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47948, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49058, PETRI_PLACES=491, PETRI_TRANSITIONS=1062} [2021-06-11 00:18:44,768 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 447 predicate places. [2021-06-11 00:18:44,768 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 1062 transitions, 49058 flow [2021-06-11 00:18:44,768 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) [2021-06-11 00:18:44,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:18:44,768 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:18:44,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-11 00:18:44,768 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]=== [2021-06-11 00:18:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:18:44,768 INFO L82 PathProgramCache]: Analyzing trace with hash 481848238, now seen corresponding path program 79 times [2021-06-11 00:18:44,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:18:44,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964488062] [2021-06-11 00:18:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:18:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:18:44,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:18:44,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:18:44,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:18:44,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:18:44,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:18:44,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:18:44,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:18:44,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:18:44,820 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:18:44,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:18:44,839 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:18:44,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:18:44,868 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:18:44,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:18:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:18:44,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964488062] [2021-06-11 00:18:44,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:18:44,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:18:44,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268243096] [2021-06-11 00:18:44,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:18:44,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:18:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:18:44,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:18:44,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:18:44,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1062 transitions, 49058 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) [2021-06-11 00:18:44,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:18:44,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:18:44,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:18:50,247 INFO L129 PetriNetUnfolder]: 523/9864 cut-off events. [2021-06-11 00:18:50,247 INFO L130 PetriNetUnfolder]: For 500693/514108 co-relation queries the response was YES. [2021-06-11 00:18:50,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83626 conditions, 9864 events. 523/9864 cut-off events. For 500693/514108 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 176586 event pairs, 523 based on Foata normal form. 72/9457 useless extension candidates. Maximal degree in co-relation 83451. Up to 1720 conditions per place. [2021-06-11 00:18:50,341 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 530 selfloop transitions, 527 changer transitions 2/1073 dead transitions. [2021-06-11 00:18:50,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1073 transitions, 51472 flow [2021-06-11 00:18:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:18:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:18:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:18:50,342 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:18:50,342 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:18:50,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:18:50,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:18:50,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:18:50,343 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) [2021-06-11 00:18:50,345 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) [2021-06-11 00:18:50,345 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) [2021-06-11 00:18:50,345 INFO L185 Difference]: Start difference. First operand has 491 places, 1062 transitions, 49058 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:18:50,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1073 transitions, 51472 flow [2021-06-11 00:18:55,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1073 transitions, 50393 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-11 00:18:55,391 INFO L241 Difference]: Finished difference. Result has 493 places, 1060 transitions, 48929 flow [2021-06-11 00:18:55,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47989, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48929, PETRI_PLACES=493, PETRI_TRANSITIONS=1060} [2021-06-11 00:18:55,392 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 449 predicate places. [2021-06-11 00:18:55,392 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 1060 transitions, 48929 flow [2021-06-11 00:18:55,392 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) [2021-06-11 00:18:55,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:18:55,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:18:55,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-11 00:18:55,393 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]=== [2021-06-11 00:18:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:18:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash -360982678, now seen corresponding path program 80 times [2021-06-11 00:18:55,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:18:55,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878244306] [2021-06-11 00:18:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:18:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:18:55,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:55,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:18:55,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:18:55,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:18:55,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:18:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:18:55,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:18:55,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:18:55,435 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:18:55,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:18:55,459 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:18:55,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:18:55,519 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:18:55,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:18:55,544 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:18:55,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:18:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:18:55,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878244306] [2021-06-11 00:18:55,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:18:55,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:18:55,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521230366] [2021-06-11 00:18:55,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:18:55,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:18:55,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:18:55,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:18:55,568 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:18:55,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1060 transitions, 48929 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) [2021-06-11 00:18:55,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:18:55,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:18:55,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:19:00,635 INFO L129 PetriNetUnfolder]: 523/9856 cut-off events. [2021-06-11 00:19:00,635 INFO L130 PetriNetUnfolder]: For 500134/513554 co-relation queries the response was YES. [2021-06-11 00:19:00,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83574 conditions, 9856 events. 523/9856 cut-off events. For 500134/513554 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 176366 event pairs, 523 based on Foata normal form. 74/9451 useless extension candidates. Maximal degree in co-relation 83399. Up to 1720 conditions per place. [2021-06-11 00:19:00,741 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 541 changer transitions 2/1069 dead transitions. [2021-06-11 00:19:00,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1069 transitions, 51257 flow [2021-06-11 00:19:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:19:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:19:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:19:00,742 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:19:00,742 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:19:00,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:19:00,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:19:00,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:19:00,744 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) [2021-06-11 00:19:00,744 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) [2021-06-11 00:19:00,744 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) [2021-06-11 00:19:00,744 INFO L185 Difference]: Start difference. First operand has 493 places, 1060 transitions, 48929 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:19:00,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1069 transitions, 51257 flow [2021-06-11 00:19:05,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1069 transitions, 50407 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-06-11 00:19:05,833 INFO L241 Difference]: Finished difference. Result has 497 places, 1062 transitions, 49352 flow [2021-06-11 00:19:05,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48089, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49352, PETRI_PLACES=497, PETRI_TRANSITIONS=1062} [2021-06-11 00:19:05,834 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 453 predicate places. [2021-06-11 00:19:05,834 INFO L480 AbstractCegarLoop]: Abstraction has has 497 places, 1062 transitions, 49352 flow [2021-06-11 00:19:05,834 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) [2021-06-11 00:19:05,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:19:05,834 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:19:05,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-11 00:19:05,834 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]=== [2021-06-11 00:19:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:19:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1814298980, now seen corresponding path program 81 times [2021-06-11 00:19:05,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:19:05,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641227342] [2021-06-11 00:19:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:19:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:19:05,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:05,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:19:05,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:05,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:19:05,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:19:05,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:19:05,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:19:05,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:19:05,871 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:19:05,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:19:05,899 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:19:05,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:19:05,932 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:19:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:19:05,957 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:19:05,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:19:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:19:05,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641227342] [2021-06-11 00:19:05,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:19:05,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:19:05,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628442663] [2021-06-11 00:19:05,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:19:05,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:19:05,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:19:05,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:19:05,983 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:19:05,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1062 transitions, 49352 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) [2021-06-11 00:19:05,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:19:05,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:19:05,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:19:11,248 INFO L129 PetriNetUnfolder]: 523/9848 cut-off events. [2021-06-11 00:19:11,248 INFO L130 PetriNetUnfolder]: For 503064/516484 co-relation queries the response was YES. [2021-06-11 00:19:11,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84081 conditions, 9848 events. 523/9848 cut-off events. For 503064/516484 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 176298 event pairs, 523 based on Foata normal form. 74/9443 useless extension candidates. Maximal degree in co-relation 83906. Up to 1720 conditions per place. [2021-06-11 00:19:11,346 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 539 changer transitions 2/1067 dead transitions. [2021-06-11 00:19:11,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1067 transitions, 51478 flow [2021-06-11 00:19:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:19:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:19:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:19:11,347 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:19:11,348 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:19:11,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:19:11,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:19:11,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:19:11,348 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) [2021-06-11 00:19:11,349 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) [2021-06-11 00:19:11,349 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) [2021-06-11 00:19:11,349 INFO L185 Difference]: Start difference. First operand has 497 places, 1062 transitions, 49352 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:19:11,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 1067 transitions, 51478 flow [2021-06-11 00:19:16,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1067 transitions, 50480 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-06-11 00:19:16,283 INFO L241 Difference]: Finished difference. Result has 500 places, 1060 transitions, 49321 flow [2021-06-11 00:19:16,284 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48364, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49321, PETRI_PLACES=500, PETRI_TRANSITIONS=1060} [2021-06-11 00:19:16,284 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-06-11 00:19:16,284 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 1060 transitions, 49321 flow [2021-06-11 00:19:16,284 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) [2021-06-11 00:19:16,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:19:16,284 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:19:16,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-11 00:19:16,285 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]=== [2021-06-11 00:19:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:19:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1724076524, now seen corresponding path program 82 times [2021-06-11 00:19:16,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:19:16,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340676252] [2021-06-11 00:19:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:19:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:19:16,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:16,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:19:16,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:16,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:19:16,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:19:16,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:19:16,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:19:16,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:19:16,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:19:16,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:19:16,338 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:19:16,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:19:16,359 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:19:16,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:19:16,388 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:19:16,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:19:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:19:16,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340676252] [2021-06-11 00:19:16,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:19:16,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:19:16,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955358958] [2021-06-11 00:19:16,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:19:16,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:19:16,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:19:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:19:16,419 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:19:16,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1060 transitions, 49321 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) [2021-06-11 00:19:16,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:19:16,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:19:16,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:19:21,685 INFO L129 PetriNetUnfolder]: 523/9840 cut-off events. [2021-06-11 00:19:21,685 INFO L130 PetriNetUnfolder]: For 501545/514965 co-relation queries the response was YES. [2021-06-11 00:19:21,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84138 conditions, 9840 events. 523/9840 cut-off events. For 501545/514965 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 176122 event pairs, 523 based on Foata normal form. 74/9435 useless extension candidates. Maximal degree in co-relation 83963. Up to 1720 conditions per place. [2021-06-11 00:19:21,818 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 497 selfloop transitions, 553 changer transitions 1/1065 dead transitions. [2021-06-11 00:19:21,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1065 transitions, 51443 flow [2021-06-11 00:19:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:19:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:19:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:19:21,820 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:19:21,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:19:21,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:19:21,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:19:21,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:19:21,820 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) [2021-06-11 00:19:21,821 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) [2021-06-11 00:19:21,821 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) [2021-06-11 00:19:21,821 INFO L185 Difference]: Start difference. First operand has 500 places, 1060 transitions, 49321 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:19:21,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1065 transitions, 51443 flow [2021-06-11 00:19:26,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 1065 transitions, 50376 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-11 00:19:27,009 INFO L241 Difference]: Finished difference. Result has 502 places, 1059 transitions, 49300 flow [2021-06-11 00:19:27,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48264, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49300, PETRI_PLACES=502, PETRI_TRANSITIONS=1059} [2021-06-11 00:19:27,010 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 458 predicate places. [2021-06-11 00:19:27,010 INFO L480 AbstractCegarLoop]: Abstraction has has 502 places, 1059 transitions, 49300 flow [2021-06-11 00:19:27,010 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) [2021-06-11 00:19:27,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:19:27,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:19:27,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-11 00:19:27,011 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]=== [2021-06-11 00:19:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:19:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2110304440, now seen corresponding path program 83 times [2021-06-11 00:19:27,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:19:27,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015233452] [2021-06-11 00:19:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:19:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:19:27,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:27,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:19:27,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:27,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:19:27,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:19:27,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:19:27,035 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:19:27,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:19:27,054 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:19:27,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:19:27,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:19:27,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:19:27,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:19:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:19:27,125 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:19:27,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:19:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:19:27,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015233452] [2021-06-11 00:19:27,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:19:27,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:19:27,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138872321] [2021-06-11 00:19:27,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:19:27,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:19:27,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:19:27,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:19:27,149 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:19:27,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1059 transitions, 49300 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) [2021-06-11 00:19:27,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:19:27,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:19:27,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:19:32,219 INFO L129 PetriNetUnfolder]: 523/9834 cut-off events. [2021-06-11 00:19:32,219 INFO L130 PetriNetUnfolder]: For 501144/514564 co-relation queries the response was YES. [2021-06-11 00:19:32,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84109 conditions, 9834 events. 523/9834 cut-off events. For 501144/514564 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 175830 event pairs, 523 based on Foata normal form. 74/9429 useless extension candidates. Maximal degree in co-relation 83934. Up to 1720 conditions per place. [2021-06-11 00:19:32,331 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 486 selfloop transitions, 562 changer transitions 2/1064 dead transitions. [2021-06-11 00:19:32,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1064 transitions, 51420 flow [2021-06-11 00:19:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:19:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:19:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:19:32,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:19:32,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:19:32,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:19:32,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:19:32,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:19:32,333 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) [2021-06-11 00:19:32,334 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) [2021-06-11 00:19:32,334 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) [2021-06-11 00:19:32,334 INFO L185 Difference]: Start difference. First operand has 502 places, 1059 transitions, 49300 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:19:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1064 transitions, 51420 flow [2021-06-11 00:19:37,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1064 transitions, 50603 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-06-11 00:19:37,440 INFO L241 Difference]: Finished difference. Result has 506 places, 1057 transitions, 49487 flow [2021-06-11 00:19:37,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48493, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49487, PETRI_PLACES=506, PETRI_TRANSITIONS=1057} [2021-06-11 00:19:37,441 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 462 predicate places. [2021-06-11 00:19:37,441 INFO L480 AbstractCegarLoop]: Abstraction has has 506 places, 1057 transitions, 49487 flow [2021-06-11 00:19:37,441 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) [2021-06-11 00:19:37,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:19:37,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:19:37,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-11 00:19:37,441 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]=== [2021-06-11 00:19:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:19:37,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1506881736, now seen corresponding path program 84 times [2021-06-11 00:19:37,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:19:37,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308085904] [2021-06-11 00:19:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:19:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:19:37,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:37,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:19:37,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:37,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:19:37,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:19:37,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:19:37,464 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:19:37,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:19:37,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:19:37,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:19:37,494 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:19:37,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:19:37,528 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:19:37,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:19:37,553 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:19:37,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:19:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:19:37,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308085904] [2021-06-11 00:19:37,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:19:37,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:19:37,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594474875] [2021-06-11 00:19:37,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:19:37,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:19:37,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:19:37,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:19:37,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:19:37,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1057 transitions, 49487 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) [2021-06-11 00:19:37,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:19:37,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:19:37,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:19:42,896 INFO L129 PetriNetUnfolder]: 523/9827 cut-off events. [2021-06-11 00:19:42,896 INFO L130 PetriNetUnfolder]: For 501536/514956 co-relation queries the response was YES. [2021-06-11 00:19:42,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84588 conditions, 9827 events. 523/9827 cut-off events. For 501536/514956 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 175739 event pairs, 523 based on Foata normal form. 74/9422 useless extension candidates. Maximal degree in co-relation 84413. Up to 1720 conditions per place. [2021-06-11 00:19:42,989 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 487 selfloop transitions, 560 changer transitions 1/1062 dead transitions. [2021-06-11 00:19:42,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1062 transitions, 51603 flow [2021-06-11 00:19:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:19:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:19:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:19:42,990 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:19:42,990 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:19:42,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:19:42,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:19:42,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:19:42,991 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) [2021-06-11 00:19:42,991 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) [2021-06-11 00:19:42,991 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) [2021-06-11 00:19:42,991 INFO L185 Difference]: Start difference. First operand has 506 places, 1057 transitions, 49487 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:19:42,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1062 transitions, 51603 flow [2021-06-11 00:19:47,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1062 transitions, 50439 flow, removed 43 selfloop flow, removed 6 redundant places. [2021-06-11 00:19:47,962 INFO L241 Difference]: Finished difference. Result has 508 places, 1056 transitions, 49378 flow [2021-06-11 00:19:47,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48333, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=560, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49378, PETRI_PLACES=508, PETRI_TRANSITIONS=1056} [2021-06-11 00:19:47,963 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 464 predicate places. [2021-06-11 00:19:47,963 INFO L480 AbstractCegarLoop]: Abstraction has has 508 places, 1056 transitions, 49378 flow [2021-06-11 00:19:47,963 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) [2021-06-11 00:19:47,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:19:47,963 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:19:47,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-11 00:19:47,963 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]=== [2021-06-11 00:19:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:19:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash -104259412, now seen corresponding path program 85 times [2021-06-11 00:19:47,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:19:47,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965124007] [2021-06-11 00:19:47,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:19:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:19:47,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:47,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:19:47,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:47,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:19:47,980 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:19:47,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:19:47,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:19:47,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:19:48,000 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:19:48,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:19:48,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:19:48,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:19:48,039 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:19:48,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:19:48,067 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:19:48,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:19:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:19:48,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965124007] [2021-06-11 00:19:48,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:19:48,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:19:48,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021258787] [2021-06-11 00:19:48,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:19:48,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:19:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:19:48,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:19:48,093 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:19:48,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1056 transitions, 49378 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) [2021-06-11 00:19:48,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:19:48,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:19:48,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:19:53,235 INFO L129 PetriNetUnfolder]: 523/9824 cut-off events. [2021-06-11 00:19:53,235 INFO L130 PetriNetUnfolder]: For 497281/510696 co-relation queries the response was YES. [2021-06-11 00:19:53,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84621 conditions, 9824 events. 523/9824 cut-off events. For 497281/510696 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 175585 event pairs, 523 based on Foata normal form. 72/9417 useless extension candidates. Maximal degree in co-relation 84447. Up to 1720 conditions per place. [2021-06-11 00:19:53,341 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 494 selfloop transitions, 551 changer transitions 2/1061 dead transitions. [2021-06-11 00:19:53,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1061 transitions, 51492 flow [2021-06-11 00:19:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:19:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:19:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:19:53,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:19:53,343 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:19:53,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:19:53,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:19:53,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:19:53,344 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) [2021-06-11 00:19:53,344 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) [2021-06-11 00:19:53,344 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) [2021-06-11 00:19:53,345 INFO L185 Difference]: Start difference. First operand has 508 places, 1056 transitions, 49378 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:19:53,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1061 transitions, 51492 flow [2021-06-11 00:19:58,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1061 transitions, 50500 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-11 00:19:58,576 INFO L241 Difference]: Finished difference. Result has 511 places, 1054 transitions, 49368 flow [2021-06-11 00:19:58,577 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48396, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49368, PETRI_PLACES=511, PETRI_TRANSITIONS=1054} [2021-06-11 00:19:58,578 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 467 predicate places. [2021-06-11 00:19:58,578 INFO L480 AbstractCegarLoop]: Abstraction has has 511 places, 1054 transitions, 49368 flow [2021-06-11 00:19:58,578 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) [2021-06-11 00:19:58,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:19:58,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:19:58,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-11 00:19:58,578 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]=== [2021-06-11 00:19:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:19:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1801091880, now seen corresponding path program 86 times [2021-06-11 00:19:58,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:19:58,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994552932] [2021-06-11 00:19:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:19:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:19:58,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:58,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:19:58,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:19:58,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:19:58,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:19:58,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:19:58,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:19:58,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:19:58,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:19:58,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:19:58,634 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:19:58,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:19:58,657 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:19:58,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:19:58,688 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:19:58,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:19:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:19:58,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994552932] [2021-06-11 00:19:58,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:19:58,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:19:58,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612066183] [2021-06-11 00:19:58,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:19:58,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:19:58,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:19:58,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:19:58,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:19:58,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 1054 transitions, 49368 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) [2021-06-11 00:19:58,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:19:58,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:19:58,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:20:04,003 INFO L129 PetriNetUnfolder]: 523/9817 cut-off events. [2021-06-11 00:20:04,003 INFO L130 PetriNetUnfolder]: For 496850/510270 co-relation queries the response was YES. [2021-06-11 00:20:04,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84710 conditions, 9817 events. 523/9817 cut-off events. For 496850/510270 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 175520 event pairs, 523 based on Foata normal form. 74/9413 useless extension candidates. Maximal degree in co-relation 84536. Up to 1720 conditions per place. [2021-06-11 00:20:04,119 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 482 selfloop transitions, 561 changer transitions 2/1059 dead transitions. [2021-06-11 00:20:04,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 1059 transitions, 51478 flow [2021-06-11 00:20:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:20:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:20:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:20:04,121 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:20:04,121 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:20:04,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:20:04,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:20:04,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:20:04,122 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) [2021-06-11 00:20:04,122 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) [2021-06-11 00:20:04,123 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) [2021-06-11 00:20:04,123 INFO L185 Difference]: Start difference. First operand has 511 places, 1054 transitions, 49368 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:20:04,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 1059 transitions, 51478 flow [2021-06-11 00:20:09,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1059 transitions, 50350 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-11 00:20:09,093 INFO L241 Difference]: Finished difference. Result has 512 places, 1052 transitions, 49249 flow [2021-06-11 00:20:09,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48250, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49249, PETRI_PLACES=512, PETRI_TRANSITIONS=1052} [2021-06-11 00:20:09,093 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 468 predicate places. [2021-06-11 00:20:09,093 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 1052 transitions, 49249 flow [2021-06-11 00:20:09,094 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) [2021-06-11 00:20:09,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:20:09,094 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:20:09,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-11 00:20:09,094 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]=== [2021-06-11 00:20:09,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:20:09,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2115163928, now seen corresponding path program 87 times [2021-06-11 00:20:09,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:20:09,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143611740] [2021-06-11 00:20:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:20:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:20:09,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:09,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:20:09,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:09,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:20:09,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:20:09,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:20:09,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:20:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:20:09,130 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:20:09,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:20:09,156 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 00:20:09,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 00:20:09,176 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:20:09,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:20:09,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:20:09,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:20:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:20:09,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143611740] [2021-06-11 00:20:09,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:20:09,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:20:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006901964] [2021-06-11 00:20:09,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:20:09,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:20:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:20:09,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:20:09,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:20:09,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 1052 transitions, 49249 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) [2021-06-11 00:20:09,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:20:09,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:20:09,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:20:14,438 INFO L129 PetriNetUnfolder]: 523/9799 cut-off events. [2021-06-11 00:20:14,438 INFO L130 PetriNetUnfolder]: For 493385/506805 co-relation queries the response was YES. [2021-06-11 00:20:14,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84430 conditions, 9799 events. 523/9799 cut-off events. For 493385/506805 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 175233 event pairs, 523 based on Foata normal form. 74/9397 useless extension candidates. Maximal degree in co-relation 84257. Up to 1720 conditions per place. [2021-06-11 00:20:14,558 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 487 selfloop transitions, 554 changer transitions 2/1057 dead transitions. [2021-06-11 00:20:14,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1057 transitions, 51355 flow [2021-06-11 00:20:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:20:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:20:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:20:14,559 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:20:14,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:20:14,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:20:14,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:20:14,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:20:14,560 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) [2021-06-11 00:20:14,561 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) [2021-06-11 00:20:14,561 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) [2021-06-11 00:20:14,561 INFO L185 Difference]: Start difference. First operand has 512 places, 1052 transitions, 49249 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:20:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1057 transitions, 51355 flow [2021-06-11 00:20:19,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 1057 transitions, 50245 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-11 00:20:19,686 INFO L241 Difference]: Finished difference. Result has 513 places, 1050 transitions, 49123 flow [2021-06-11 00:20:19,687 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48149, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49123, PETRI_PLACES=513, PETRI_TRANSITIONS=1050} [2021-06-11 00:20:19,687 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 469 predicate places. [2021-06-11 00:20:19,687 INFO L480 AbstractCegarLoop]: Abstraction has has 513 places, 1050 transitions, 49123 flow [2021-06-11 00:20:19,687 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) [2021-06-11 00:20:19,688 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:20:19,688 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:20:19,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-11 00:20:19,688 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]=== [2021-06-11 00:20:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:20:19,688 INFO L82 PathProgramCache]: Analyzing trace with hash -604319470, now seen corresponding path program 88 times [2021-06-11 00:20:19,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:20:19,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531131899] [2021-06-11 00:20:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:20:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:20:19,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:19,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:20:19,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:19,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:20:19,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:20:19,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:20:19,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:20:19,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:20:19,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:20:19,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:20:19,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:20:19,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:20:19,783 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:20:19,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:20:19,808 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:20:19,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:20:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:20:19,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531131899] [2021-06-11 00:20:19,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:20:19,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:20:19,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410874086] [2021-06-11 00:20:19,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:20:19,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:20:19,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:20:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:20:19,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:20:19,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1050 transitions, 49123 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) [2021-06-11 00:20:19,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:20:19,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:20:19,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:20:24,927 INFO L129 PetriNetUnfolder]: 523/9789 cut-off events. [2021-06-11 00:20:24,927 INFO L130 PetriNetUnfolder]: For 491891/505311 co-relation queries the response was YES. [2021-06-11 00:20:25,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84313 conditions, 9789 events. 523/9789 cut-off events. For 491891/505311 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 174864 event pairs, 523 based on Foata normal form. 74/9388 useless extension candidates. Maximal degree in co-relation 84141. Up to 1720 conditions per place. [2021-06-11 00:20:25,035 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 495 selfloop transitions, 544 changer transitions 2/1055 dead transitions. [2021-06-11 00:20:25,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1055 transitions, 51225 flow [2021-06-11 00:20:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:20:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:20:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:20:25,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:20:25,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:20:25,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:20:25,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:20:25,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:20:25,037 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) [2021-06-11 00:20:25,037 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) [2021-06-11 00:20:25,037 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) [2021-06-11 00:20:25,037 INFO L185 Difference]: Start difference. First operand has 513 places, 1050 transitions, 49123 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:20:25,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1055 transitions, 51225 flow [2021-06-11 00:20:29,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1055 transitions, 50142 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:20:29,999 INFO L241 Difference]: Finished difference. Result has 515 places, 1048 transitions, 49001 flow [2021-06-11 00:20:30,000 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48050, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49001, PETRI_PLACES=515, PETRI_TRANSITIONS=1048} [2021-06-11 00:20:30,000 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 471 predicate places. [2021-06-11 00:20:30,000 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1048 transitions, 49001 flow [2021-06-11 00:20:30,000 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) [2021-06-11 00:20:30,000 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:20:30,000 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:20:30,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-11 00:20:30,000 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]=== [2021-06-11 00:20:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:20:30,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1189967436, now seen corresponding path program 89 times [2021-06-11 00:20:30,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:20:30,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530505470] [2021-06-11 00:20:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:20:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:20:30,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:30,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:20:30,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:30,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:20:30,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:20:30,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:20:30,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:20:30,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:20:30,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:20:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:20:30,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:20:30,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:20:30,108 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:20:30,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:20:30,139 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:20:30,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:20:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:20:30,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530505470] [2021-06-11 00:20:30,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:20:30,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:20:30,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687333616] [2021-06-11 00:20:30,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:20:30,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:20:30,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:20:30,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:20:30,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:20:30,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1048 transitions, 49001 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) [2021-06-11 00:20:30,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:20:30,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:20:30,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:20:35,675 INFO L129 PetriNetUnfolder]: 523/9781 cut-off events. [2021-06-11 00:20:35,675 INFO L130 PetriNetUnfolder]: For 491192/504612 co-relation queries the response was YES. [2021-06-11 00:20:35,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84262 conditions, 9781 events. 523/9781 cut-off events. For 491192/504612 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 174735 event pairs, 523 based on Foata normal form. 74/9380 useless extension candidates. Maximal degree in co-relation 84090. Up to 1720 conditions per place. [2021-06-11 00:20:35,779 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 496 selfloop transitions, 541 changer transitions 2/1053 dead transitions. [2021-06-11 00:20:35,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1053 transitions, 51099 flow [2021-06-11 00:20:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:20:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:20:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:20:35,780 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:20:35,780 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:20:35,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:20:35,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:20:35,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:20:35,781 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) [2021-06-11 00:20:35,781 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) [2021-06-11 00:20:35,781 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) [2021-06-11 00:20:35,781 INFO L185 Difference]: Start difference. First operand has 515 places, 1048 transitions, 49001 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:20:35,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1053 transitions, 51099 flow [2021-06-11 00:20:40,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1053 transitions, 50025 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:20:40,709 INFO L241 Difference]: Finished difference. Result has 517 places, 1046 transitions, 48882 flow [2021-06-11 00:20:40,710 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47937, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48882, PETRI_PLACES=517, PETRI_TRANSITIONS=1046} [2021-06-11 00:20:40,710 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 473 predicate places. [2021-06-11 00:20:40,710 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 1046 transitions, 48882 flow [2021-06-11 00:20:40,710 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) [2021-06-11 00:20:40,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:20:40,711 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:20:40,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-11 00:20:40,711 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]=== [2021-06-11 00:20:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:20:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1278821634, now seen corresponding path program 90 times [2021-06-11 00:20:40,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:20:40,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461871797] [2021-06-11 00:20:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:20:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:20:40,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:40,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:20:40,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:40,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:20:40,728 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:20:40,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:20:40,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:20:40,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:20:40,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:20:40,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:20:40,773 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:20:40,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:20:40,806 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:20:40,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:20:40,830 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:20:40,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:20:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:20:40,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461871797] [2021-06-11 00:20:40,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:20:40,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:20:40,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982671873] [2021-06-11 00:20:40,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:20:40,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:20:40,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:20:40,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:20:40,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:20:40,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1046 transitions, 48882 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) [2021-06-11 00:20:40,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:20:40,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:20:40,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:20:45,970 INFO L129 PetriNetUnfolder]: 523/9773 cut-off events. [2021-06-11 00:20:45,970 INFO L130 PetriNetUnfolder]: For 490402/503817 co-relation queries the response was YES. [2021-06-11 00:20:46,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84207 conditions, 9773 events. 523/9773 cut-off events. For 490402/503817 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 174540 event pairs, 523 based on Foata normal form. 72/9370 useless extension candidates. Maximal degree in co-relation 84035. Up to 1720 conditions per place. [2021-06-11 00:20:46,085 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 498 selfloop transitions, 538 changer transitions 1/1051 dead transitions. [2021-06-11 00:20:46,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1051 transitions, 50976 flow [2021-06-11 00:20:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:20:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:20:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:20:46,086 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:20:46,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:20:46,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:20:46,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:20:46,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:20:46,087 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) [2021-06-11 00:20:46,088 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) [2021-06-11 00:20:46,088 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) [2021-06-11 00:20:46,088 INFO L185 Difference]: Start difference. First operand has 517 places, 1046 transitions, 48882 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:20:46,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1051 transitions, 50976 flow [2021-06-11 00:20:51,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1051 transitions, 50358 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-11 00:20:51,130 INFO L241 Difference]: Finished difference. Result has 521 places, 1045 transitions, 49268 flow [2021-06-11 00:20:51,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48274, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49268, PETRI_PLACES=521, PETRI_TRANSITIONS=1045} [2021-06-11 00:20:51,131 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 477 predicate places. [2021-06-11 00:20:51,131 INFO L480 AbstractCegarLoop]: Abstraction has has 521 places, 1045 transitions, 49268 flow [2021-06-11 00:20:51,131 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) [2021-06-11 00:20:51,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:20:51,132 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:20:51,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-11 00:20:51,132 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]=== [2021-06-11 00:20:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:20:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -378235580, now seen corresponding path program 91 times [2021-06-11 00:20:51,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:20:51,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244181842] [2021-06-11 00:20:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:20:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:20:51,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:51,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:20:51,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:20:51,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:20:51,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:20:51,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:20:51,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:20:51,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:20:51,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:20:51,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:20:51,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:20:51,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:20:51,212 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:20:51,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:20:51,236 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:20:51,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:20:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:20:51,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244181842] [2021-06-11 00:20:51,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:20:51,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:20:51,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917059003] [2021-06-11 00:20:51,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:20:51,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:20:51,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:20:51,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:20:51,260 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:20:51,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1045 transitions, 49268 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) [2021-06-11 00:20:51,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:20:51,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:20:51,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:20:56,671 INFO L129 PetriNetUnfolder]: 523/9766 cut-off events. [2021-06-11 00:20:56,671 INFO L130 PetriNetUnfolder]: For 495516/508936 co-relation queries the response was YES. [2021-06-11 00:20:56,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84641 conditions, 9766 events. 523/9766 cut-off events. For 495516/508936 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 174460 event pairs, 523 based on Foata normal form. 74/9365 useless extension candidates. Maximal degree in co-relation 84469. Up to 1720 conditions per place. [2021-06-11 00:20:56,772 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 518 selfloop transitions, 521 changer transitions 1/1054 dead transitions. [2021-06-11 00:20:56,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1054 transitions, 51560 flow [2021-06-11 00:20:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:20:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:20:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:20:56,773 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:20:56,773 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:20:56,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:20:56,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:20:56,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:20:56,774 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) [2021-06-11 00:20:56,774 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) [2021-06-11 00:20:56,774 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) [2021-06-11 00:20:56,774 INFO L185 Difference]: Start difference. First operand has 521 places, 1045 transitions, 49268 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:20:56,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1054 transitions, 51560 flow [2021-06-11 00:21:01,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 1054 transitions, 50481 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:21:01,632 INFO L241 Difference]: Finished difference. Result has 524 places, 1048 transitions, 49440 flow [2021-06-11 00:21:01,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48207, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49440, PETRI_PLACES=524, PETRI_TRANSITIONS=1048} [2021-06-11 00:21:01,633 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 480 predicate places. [2021-06-11 00:21:01,633 INFO L480 AbstractCegarLoop]: Abstraction has has 524 places, 1048 transitions, 49440 flow [2021-06-11 00:21:01,633 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) [2021-06-11 00:21:01,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:21:01,633 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:21:01,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-11 00:21:01,633 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]=== [2021-06-11 00:21:01,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:21:01,634 INFO L82 PathProgramCache]: Analyzing trace with hash -806416598, now seen corresponding path program 92 times [2021-06-11 00:21:01,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:21:01,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454665592] [2021-06-11 00:21:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:21:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:21:01,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:01,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:21:01,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:01,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:21:01,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:21:01,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:21:01,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:21:01,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:21:01,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:21:01,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:21:01,678 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 00:21:01,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 00:21:01,711 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:21:01,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:21:01,735 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:21:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:21:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:21:01,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454665592] [2021-06-11 00:21:01,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:21:01,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:21:01,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628966948] [2021-06-11 00:21:01,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:21:01,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:21:01,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:21:01,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:21:01,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:21:01,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1048 transitions, 49440 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) [2021-06-11 00:21:01,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:21:01,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:21:01,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:21:06,790 INFO L129 PetriNetUnfolder]: 523/9759 cut-off events. [2021-06-11 00:21:06,791 INFO L130 PetriNetUnfolder]: For 497982/511402 co-relation queries the response was YES. [2021-06-11 00:21:06,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84649 conditions, 9759 events. 523/9759 cut-off events. For 497982/511402 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 174257 event pairs, 523 based on Foata normal form. 74/9358 useless extension candidates. Maximal degree in co-relation 84476. Up to 1720 conditions per place. [2021-06-11 00:21:06,895 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 514 selfloop transitions, 523 changer transitions 2/1053 dead transitions. [2021-06-11 00:21:06,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1053 transitions, 51538 flow [2021-06-11 00:21:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:21:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:21:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:21:06,896 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:21:06,896 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:21:06,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:21:06,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:21:06,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:21:06,897 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) [2021-06-11 00:21:06,897 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) [2021-06-11 00:21:06,897 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) [2021-06-11 00:21:06,898 INFO L185 Difference]: Start difference. First operand has 524 places, 1048 transitions, 49440 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:21:06,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1053 transitions, 51538 flow [2021-06-11 00:21:11,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 1053 transitions, 50562 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-06-11 00:21:11,829 INFO L241 Difference]: Finished difference. Result has 527 places, 1046 transitions, 49388 flow [2021-06-11 00:21:11,830 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48474, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49388, PETRI_PLACES=527, PETRI_TRANSITIONS=1046} [2021-06-11 00:21:11,830 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 483 predicate places. [2021-06-11 00:21:11,830 INFO L480 AbstractCegarLoop]: Abstraction has has 527 places, 1046 transitions, 49388 flow [2021-06-11 00:21:11,830 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) [2021-06-11 00:21:11,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:21:11,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:21:11,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-11 00:21:11,830 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]=== [2021-06-11 00:21:11,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:21:11,831 INFO L82 PathProgramCache]: Analyzing trace with hash -462220208, now seen corresponding path program 93 times [2021-06-11 00:21:11,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:21:11,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539304404] [2021-06-11 00:21:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:21:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:21:11,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:11,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:21:11,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:11,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:21:11,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:21:11,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:21:11,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:21:11,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:21:11,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:21:11,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:21:11,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:21:11,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:21:11,908 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:21:11,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:21:11,932 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:21:11,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:21:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:21:11,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539304404] [2021-06-11 00:21:11,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:21:11,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:21:11,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27767256] [2021-06-11 00:21:11,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:21:11,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:21:11,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:21:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:21:11,955 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:21:11,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1046 transitions, 49388 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) [2021-06-11 00:21:11,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:21:11,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:21:11,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:21:17,120 INFO L129 PetriNetUnfolder]: 523/9751 cut-off events. [2021-06-11 00:21:17,121 INFO L130 PetriNetUnfolder]: For 497171/510591 co-relation queries the response was YES. [2021-06-11 00:21:17,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84710 conditions, 9751 events. 523/9751 cut-off events. For 497171/510591 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 174077 event pairs, 523 based on Foata normal form. 74/9350 useless extension candidates. Maximal degree in co-relation 84537. Up to 1720 conditions per place. [2021-06-11 00:21:17,214 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 521 selfloop transitions, 515 changer transitions 1/1051 dead transitions. [2021-06-11 00:21:17,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1051 transitions, 51482 flow [2021-06-11 00:21:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:21:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:21:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:21:17,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:21:17,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:21:17,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:21:17,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:21:17,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:21:17,216 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) [2021-06-11 00:21:17,216 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) [2021-06-11 00:21:17,216 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) [2021-06-11 00:21:17,216 INFO L185 Difference]: Start difference. First operand has 527 places, 1046 transitions, 49388 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:21:17,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1051 transitions, 51482 flow [2021-06-11 00:21:22,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1051 transitions, 50443 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-11 00:21:22,110 INFO L241 Difference]: Finished difference. Result has 529 places, 1045 transitions, 49317 flow [2021-06-11 00:21:22,111 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48359, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49317, PETRI_PLACES=529, PETRI_TRANSITIONS=1045} [2021-06-11 00:21:22,111 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 485 predicate places. [2021-06-11 00:21:22,111 INFO L480 AbstractCegarLoop]: Abstraction has has 529 places, 1045 transitions, 49317 flow [2021-06-11 00:21:22,111 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) [2021-06-11 00:21:22,111 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:21:22,111 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:21:22,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-11 00:21:22,111 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]=== [2021-06-11 00:21:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:21:22,112 INFO L82 PathProgramCache]: Analyzing trace with hash 38385574, now seen corresponding path program 94 times [2021-06-11 00:21:22,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:21:22,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367242562] [2021-06-11 00:21:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:21:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:21:22,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:22,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:21:22,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:22,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:21:22,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:21:22,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:21:22,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:21:22,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:21:22,148 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:21:22,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:21:22,164 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:21:22,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:21:22,186 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:21:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:21:22,214 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:21:22,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:21:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:21:22,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367242562] [2021-06-11 00:21:22,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:21:22,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:21:22,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223426169] [2021-06-11 00:21:22,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:21:22,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:21:22,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:21:22,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:21:22,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:21:22,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1045 transitions, 49317 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) [2021-06-11 00:21:22,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:21:22,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:21:22,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:21:27,512 INFO L129 PetriNetUnfolder]: 523/9744 cut-off events. [2021-06-11 00:21:27,512 INFO L130 PetriNetUnfolder]: For 496784/510204 co-relation queries the response was YES. [2021-06-11 00:21:27,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84686 conditions, 9744 events. 523/9744 cut-off events. For 496784/510204 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 173908 event pairs, 523 based on Foata normal form. 74/9343 useless extension candidates. Maximal degree in co-relation 84513. Up to 1707 conditions per place. [2021-06-11 00:21:27,628 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 519 changer transitions 2/1091 dead transitions. [2021-06-11 00:21:27,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1091 transitions, 53390 flow [2021-06-11 00:21:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:21:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:21:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:21:27,629 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:21:27,629 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:21:27,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:21:27,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:21:27,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:21:27,630 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) [2021-06-11 00:21:27,630 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) [2021-06-11 00:21:27,631 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) [2021-06-11 00:21:27,631 INFO L185 Difference]: Start difference. First operand has 529 places, 1045 transitions, 49317 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:21:27,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1091 transitions, 53390 flow [2021-06-11 00:21:32,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1091 transitions, 52325 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:21:32,647 INFO L241 Difference]: Finished difference. Result has 533 places, 1068 transitions, 50622 flow [2021-06-11 00:21:32,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48300, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=495, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50622, PETRI_PLACES=533, PETRI_TRANSITIONS=1068} [2021-06-11 00:21:32,647 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 489 predicate places. [2021-06-11 00:21:32,647 INFO L480 AbstractCegarLoop]: Abstraction has has 533 places, 1068 transitions, 50622 flow [2021-06-11 00:21:32,647 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) [2021-06-11 00:21:32,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:21:32,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:21:32,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-11 00:21:32,648 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]=== [2021-06-11 00:21:32,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:21:32,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1916406046, now seen corresponding path program 95 times [2021-06-11 00:21:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:21:32,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129678736] [2021-06-11 00:21:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:21:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:21:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:32,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:21:32,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:32,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:21:32,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:21:32,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:21:32,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:21:32,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:21:32,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:21:32,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:21:32,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:21:32,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:21:32,743 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:21:32,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:21:32,768 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:21:32,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:21:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:21:32,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129678736] [2021-06-11 00:21:32,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:21:32,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:21:32,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16681010] [2021-06-11 00:21:32,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:21:32,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:21:32,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:21:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:21:32,797 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:21:32,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1068 transitions, 50622 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) [2021-06-11 00:21:32,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:21:32,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:21:32,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:21:38,074 INFO L129 PetriNetUnfolder]: 523/9736 cut-off events. [2021-06-11 00:21:38,074 INFO L130 PetriNetUnfolder]: For 507721/521147 co-relation queries the response was YES. [2021-06-11 00:21:38,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84968 conditions, 9736 events. 523/9736 cut-off events. For 507721/521147 co-relation queries the response was YES. Maximal size of possible extension queue 1528. Compared 173702 event pairs, 523 based on Foata normal form. 74/9305 useless extension candidates. Maximal degree in co-relation 84793. Up to 1707 conditions per place. [2021-06-11 00:21:38,175 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 529 selfloop transitions, 528 changer transitions 2/1073 dead transitions. [2021-06-11 00:21:38,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1073 transitions, 52760 flow [2021-06-11 00:21:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:21:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:21:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:21:38,177 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:21:38,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:21:38,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:21:38,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:21:38,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:21:38,177 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) [2021-06-11 00:21:38,178 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) [2021-06-11 00:21:38,178 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) [2021-06-11 00:21:38,178 INFO L185 Difference]: Start difference. First operand has 533 places, 1068 transitions, 50622 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:21:38,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1073 transitions, 52760 flow [2021-06-11 00:21:43,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1073 transitions, 51731 flow, removed 48 selfloop flow, removed 6 redundant places. [2021-06-11 00:21:43,192 INFO L241 Difference]: Finished difference. Result has 535 places, 1066 transitions, 50530 flow [2021-06-11 00:21:43,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49603, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50530, PETRI_PLACES=535, PETRI_TRANSITIONS=1066} [2021-06-11 00:21:43,192 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 491 predicate places. [2021-06-11 00:21:43,192 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 1066 transitions, 50530 flow [2021-06-11 00:21:43,192 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) [2021-06-11 00:21:43,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:21:43,193 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:21:43,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-11 00:21:43,193 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]=== [2021-06-11 00:21:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:21:43,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1187984936, now seen corresponding path program 96 times [2021-06-11 00:21:43,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:21:43,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622870681] [2021-06-11 00:21:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:21:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:21:43,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:43,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:21:43,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:43,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:21:43,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:21:43,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:21:43,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:21:43,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:21:43,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:21:43,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:21:43,245 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:21:43,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:21:43,266 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:21:43,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:21:43,294 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:21:43,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:21:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:21:43,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622870681] [2021-06-11 00:21:43,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:21:43,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:21:43,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450704203] [2021-06-11 00:21:43,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:21:43,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:21:43,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:21:43,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:21:43,320 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:21:43,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1066 transitions, 50530 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) [2021-06-11 00:21:43,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:21:43,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:21:43,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:21:48,873 INFO L129 PetriNetUnfolder]: 523/9728 cut-off events. [2021-06-11 00:21:48,873 INFO L130 PetriNetUnfolder]: For 505423/518844 co-relation queries the response was YES. [2021-06-11 00:21:48,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85045 conditions, 9728 events. 523/9728 cut-off events. For 505423/518844 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 173539 event pairs, 523 based on Foata normal form. 72/9310 useless extension candidates. Maximal degree in co-relation 84870. Up to 1707 conditions per place. [2021-06-11 00:21:48,970 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 559 selfloop transitions, 513 changer transitions 1/1087 dead transitions. [2021-06-11 00:21:48,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1087 transitions, 53396 flow [2021-06-11 00:21:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:21:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:21:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:21:48,971 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:21:48,971 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:21:48,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:21:48,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:21:48,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:21:48,972 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) [2021-06-11 00:21:48,972 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) [2021-06-11 00:21:48,972 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) [2021-06-11 00:21:48,972 INFO L185 Difference]: Start difference. First operand has 535 places, 1066 transitions, 50530 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:21:48,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1087 transitions, 53396 flow [2021-06-11 00:21:53,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1087 transitions, 52321 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-06-11 00:21:54,019 INFO L241 Difference]: Finished difference. Result has 536 places, 1073 transitions, 50897 flow [2021-06-11 00:21:54,019 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49469, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50897, PETRI_PLACES=536, PETRI_TRANSITIONS=1073} [2021-06-11 00:21:54,019 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 492 predicate places. [2021-06-11 00:21:54,019 INFO L480 AbstractCegarLoop]: Abstraction has has 536 places, 1073 transitions, 50897 flow [2021-06-11 00:21:54,020 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) [2021-06-11 00:21:54,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:21:54,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:21:54,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-11 00:21:54,020 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]=== [2021-06-11 00:21:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:21:54,020 INFO L82 PathProgramCache]: Analyzing trace with hash 926716392, now seen corresponding path program 97 times [2021-06-11 00:21:54,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:21:54,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535774759] [2021-06-11 00:21:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:21:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:21:54,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:54,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:21:54,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:21:54,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:21:54,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:21:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:21:54,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:21:54,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:21:54,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:21:54,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:21:54,067 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:21:54,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:21:54,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:21:54,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:21:54,111 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:21:54,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:21:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:21:54,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535774759] [2021-06-11 00:21:54,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:21:54,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:21:54,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374104256] [2021-06-11 00:21:54,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:21:54,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:21:54,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:21:54,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:21:54,135 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:21:54,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1073 transitions, 50897 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) [2021-06-11 00:21:54,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:21:54,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:21:54,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:21:59,376 INFO L129 PetriNetUnfolder]: 523/9721 cut-off events. [2021-06-11 00:21:59,376 INFO L130 PetriNetUnfolder]: For 503883/517304 co-relation queries the response was YES. [2021-06-11 00:21:59,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85142 conditions, 9721 events. 523/9721 cut-off events. For 503883/517304 co-relation queries the response was YES. Maximal size of possible extension queue 1525. Compared 173463 event pairs, 523 based on Foata normal form. 72/9309 useless extension candidates. Maximal degree in co-relation 84969. Up to 1707 conditions per place. [2021-06-11 00:21:59,475 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 559 selfloop transitions, 511 changer transitions 2/1086 dead transitions. [2021-06-11 00:21:59,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1086 transitions, 53397 flow [2021-06-11 00:21:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:21:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:21:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:21:59,476 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:21:59,476 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:21:59,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:21:59,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:21:59,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:21:59,477 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) [2021-06-11 00:21:59,477 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) [2021-06-11 00:21:59,477 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) [2021-06-11 00:21:59,477 INFO L185 Difference]: Start difference. First operand has 536 places, 1073 transitions, 50897 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:21:59,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1086 transitions, 53397 flow [2021-06-11 00:22:04,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1086 transitions, 52097 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-06-11 00:22:04,675 INFO L241 Difference]: Finished difference. Result has 538 places, 1073 transitions, 50635 flow [2021-06-11 00:22:04,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49607, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50635, PETRI_PLACES=538, PETRI_TRANSITIONS=1073} [2021-06-11 00:22:04,676 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 494 predicate places. [2021-06-11 00:22:04,676 INFO L480 AbstractCegarLoop]: Abstraction has has 538 places, 1073 transitions, 50635 flow [2021-06-11 00:22:04,676 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) [2021-06-11 00:22:04,676 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:22:04,676 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:22:04,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-11 00:22:04,676 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]=== [2021-06-11 00:22:04,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:22:04,677 INFO L82 PathProgramCache]: Analyzing trace with hash -156220312, now seen corresponding path program 98 times [2021-06-11 00:22:04,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:22:04,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010061567] [2021-06-11 00:22:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:22:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:22:04,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:04,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:22:04,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:04,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:22:04,692 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:22:04,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:22:04,700 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:22:04,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:22:04,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:22:04,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:22:04,726 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:22:04,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:22:04,756 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:22:04,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:22:04,780 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:22:04,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:22:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:22:04,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010061567] [2021-06-11 00:22:04,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:22:04,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:22:04,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371670100] [2021-06-11 00:22:04,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:22:04,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:22:04,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:22:04,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:22:04,803 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:22:04,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1073 transitions, 50635 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) [2021-06-11 00:22:04,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:22:04,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:22:04,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:22:10,174 INFO L129 PetriNetUnfolder]: 523/9713 cut-off events. [2021-06-11 00:22:10,174 INFO L130 PetriNetUnfolder]: For 497874/511294 co-relation queries the response was YES. [2021-06-11 00:22:10,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84903 conditions, 9713 events. 523/9713 cut-off events. For 497874/511294 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 173279 event pairs, 523 based on Foata normal form. 74/9297 useless extension candidates. Maximal degree in co-relation 84730. Up to 1707 conditions per place. [2021-06-11 00:22:10,267 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 527 changer transitions 2/1078 dead transitions. [2021-06-11 00:22:10,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1078 transitions, 52783 flow [2021-06-11 00:22:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:22:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:22:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:22:10,269 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:22:10,269 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:22:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:22:10,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:22:10,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:22:10,269 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) [2021-06-11 00:22:10,269 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) [2021-06-11 00:22:10,270 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) [2021-06-11 00:22:10,270 INFO L185 Difference]: Start difference. First operand has 538 places, 1073 transitions, 50635 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:22:10,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1078 transitions, 52783 flow [2021-06-11 00:22:15,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1078 transitions, 51770 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-11 00:22:15,289 INFO L241 Difference]: Finished difference. Result has 540 places, 1071 transitions, 50560 flow [2021-06-11 00:22:15,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49632, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50560, PETRI_PLACES=540, PETRI_TRANSITIONS=1071} [2021-06-11 00:22:15,290 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 496 predicate places. [2021-06-11 00:22:15,290 INFO L480 AbstractCegarLoop]: Abstraction has has 540 places, 1071 transitions, 50560 flow [2021-06-11 00:22:15,290 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) [2021-06-11 00:22:15,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:22:15,290 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:22:15,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-11 00:22:15,290 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]=== [2021-06-11 00:22:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:22:15,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1626326288, now seen corresponding path program 99 times [2021-06-11 00:22:15,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:22:15,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755687812] [2021-06-11 00:22:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:22:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:22:15,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:15,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:22:15,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:15,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:22:15,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:22:15,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:22:15,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:22:15,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:22:15,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:22:15,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:22:15,339 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:22:15,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:22:15,358 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:22:15,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:22:15,398 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:22:15,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:22:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:22:15,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755687812] [2021-06-11 00:22:15,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:22:15,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:22:15,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326202225] [2021-06-11 00:22:15,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:22:15,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:22:15,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:22:15,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:22:15,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:22:15,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1071 transitions, 50560 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) [2021-06-11 00:22:15,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:22:15,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:22:15,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:22:20,675 INFO L129 PetriNetUnfolder]: 523/9705 cut-off events. [2021-06-11 00:22:20,675 INFO L130 PetriNetUnfolder]: For 497193/510613 co-relation queries the response was YES. [2021-06-11 00:22:20,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84866 conditions, 9705 events. 523/9705 cut-off events. For 497193/510613 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 173072 event pairs, 523 based on Foata normal form. 74/9295 useless extension candidates. Maximal degree in co-relation 84693. Up to 1707 conditions per place. [2021-06-11 00:22:20,775 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 537 selfloop transitions, 524 changer transitions 1/1076 dead transitions. [2021-06-11 00:22:20,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1076 transitions, 52704 flow [2021-06-11 00:22:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:22:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:22:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:22:20,776 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:22:20,776 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:22:20,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:22:20,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:22:20,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:22:20,776 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) [2021-06-11 00:22:20,777 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) [2021-06-11 00:22:20,777 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) [2021-06-11 00:22:20,777 INFO L185 Difference]: Start difference. First operand has 540 places, 1071 transitions, 50560 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:22:20,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1076 transitions, 52704 flow [2021-06-11 00:22:26,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1076 transitions, 51937 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-11 00:22:26,140 INFO L241 Difference]: Finished difference. Result has 544 places, 1070 transitions, 50782 flow [2021-06-11 00:22:26,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49803, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50782, PETRI_PLACES=544, PETRI_TRANSITIONS=1070} [2021-06-11 00:22:26,141 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 500 predicate places. [2021-06-11 00:22:26,141 INFO L480 AbstractCegarLoop]: Abstraction has has 544 places, 1070 transitions, 50782 flow [2021-06-11 00:22:26,141 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) [2021-06-11 00:22:26,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:22:26,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:22:26,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-11 00:22:26,141 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]=== [2021-06-11 00:22:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:22:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash 545601504, now seen corresponding path program 100 times [2021-06-11 00:22:26,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:22:26,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923272084] [2021-06-11 00:22:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:22:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:22:26,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:26,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:22:26,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:26,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:22:26,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:22:26,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:22:26,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:22:26,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:22:26,172 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:22:26,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:22:26,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:22:26,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:22:26,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:22:26,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:22:26,231 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:22:26,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:22:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:22:26,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923272084] [2021-06-11 00:22:26,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:22:26,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:22:26,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145159380] [2021-06-11 00:22:26,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:22:26,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:22:26,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:22:26,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:22:26,255 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:22:26,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1070 transitions, 50782 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) [2021-06-11 00:22:26,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:22:26,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:22:26,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:22:31,649 INFO L129 PetriNetUnfolder]: 523/9698 cut-off events. [2021-06-11 00:22:31,649 INFO L130 PetriNetUnfolder]: For 498591/512011 co-relation queries the response was YES. [2021-06-11 00:22:31,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85398 conditions, 9698 events. 523/9698 cut-off events. For 498591/512011 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 172954 event pairs, 523 based on Foata normal form. 74/9288 useless extension candidates. Maximal degree in co-relation 85225. Up to 1707 conditions per place. [2021-06-11 00:22:31,745 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 552 selfloop transitions, 513 changer transitions 2/1081 dead transitions. [2021-06-11 00:22:31,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1081 transitions, 53178 flow [2021-06-11 00:22:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:22:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:22:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:22:31,746 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:22:31,746 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:22:31,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:22:31,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:22:31,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:22:31,746 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) [2021-06-11 00:22:31,747 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) [2021-06-11 00:22:31,747 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) [2021-06-11 00:22:31,747 INFO L185 Difference]: Start difference. First operand has 544 places, 1070 transitions, 50782 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:22:31,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1081 transitions, 53178 flow [2021-06-11 00:22:36,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1081 transitions, 52142 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:22:36,873 INFO L241 Difference]: Finished difference. Result has 547 places, 1074 transitions, 50999 flow [2021-06-11 00:22:36,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49756, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50999, PETRI_PLACES=547, PETRI_TRANSITIONS=1074} [2021-06-11 00:22:36,874 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 503 predicate places. [2021-06-11 00:22:36,874 INFO L480 AbstractCegarLoop]: Abstraction has has 547 places, 1074 transitions, 50999 flow [2021-06-11 00:22:36,874 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) [2021-06-11 00:22:36,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:22:36,874 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:22:36,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-11 00:22:36,874 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]=== [2021-06-11 00:22:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:22:36,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2106915522, now seen corresponding path program 101 times [2021-06-11 00:22:36,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:22:36,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686699940] [2021-06-11 00:22:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:22:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:22:36,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:36,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:22:36,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:36,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:22:36,888 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:22:36,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:22:36,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:22:36,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:22:36,906 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:22:36,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:22:36,920 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:22:36,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:22:36,939 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:22:36,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:22:36,963 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:22:36,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:22:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:22:36,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686699940] [2021-06-11 00:22:36,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:22:36,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:22:36,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051338734] [2021-06-11 00:22:36,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:22:36,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:22:36,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:22:36,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:22:36,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:22:36,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1074 transitions, 50999 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) [2021-06-11 00:22:36,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:22:36,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:22:36,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:22:42,241 INFO L129 PetriNetUnfolder]: 523/9691 cut-off events. [2021-06-11 00:22:42,241 INFO L130 PetriNetUnfolder]: For 501335/514755 co-relation queries the response was YES. [2021-06-11 00:22:42,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85382 conditions, 9691 events. 523/9691 cut-off events. For 501335/514755 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 172812 event pairs, 523 based on Foata normal form. 74/9276 useless extension candidates. Maximal degree in co-relation 85208. Up to 1707 conditions per place. [2021-06-11 00:22:42,339 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 551 selfloop transitions, 513 changer transitions 1/1079 dead transitions. [2021-06-11 00:22:42,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1079 transitions, 53149 flow [2021-06-11 00:22:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:22:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:22:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:22:42,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:22:42,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:22:42,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:22:42,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:22:42,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:22:42,341 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) [2021-06-11 00:22:42,341 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) [2021-06-11 00:22:42,341 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) [2021-06-11 00:22:42,341 INFO L185 Difference]: Start difference. First operand has 547 places, 1074 transitions, 50999 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:22:42,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1079 transitions, 53149 flow [2021-06-11 00:22:47,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 1079 transitions, 52225 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-11 00:22:47,362 INFO L241 Difference]: Finished difference. Result has 550 places, 1073 transitions, 51046 flow [2021-06-11 00:22:47,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50085, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51046, PETRI_PLACES=550, PETRI_TRANSITIONS=1073} [2021-06-11 00:22:47,363 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 506 predicate places. [2021-06-11 00:22:47,363 INFO L480 AbstractCegarLoop]: Abstraction has has 550 places, 1073 transitions, 51046 flow [2021-06-11 00:22:47,363 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) [2021-06-11 00:22:47,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:22:47,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:22:47,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-11 00:22:47,363 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]=== [2021-06-11 00:22:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:22:47,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1997969798, now seen corresponding path program 102 times [2021-06-11 00:22:47,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:22:47,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750226281] [2021-06-11 00:22:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:22:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:22:47,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:47,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:22:47,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:47,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:22:47,378 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:22:47,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:22:47,386 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:22:47,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:22:47,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:22:47,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:22:47,410 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:22:47,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:22:47,430 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:22:47,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:22:47,454 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:22:47,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:22:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:22:47,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750226281] [2021-06-11 00:22:47,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:22:47,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:22:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771653918] [2021-06-11 00:22:47,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:22:47,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:22:47,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:22:47,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:22:47,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:22:47,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1073 transitions, 51046 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) [2021-06-11 00:22:47,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:22:47,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:22:47,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:22:52,889 INFO L129 PetriNetUnfolder]: 523/9684 cut-off events. [2021-06-11 00:22:52,889 INFO L130 PetriNetUnfolder]: For 501280/514700 co-relation queries the response was YES. [2021-06-11 00:22:52,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85499 conditions, 9684 events. 523/9684 cut-off events. For 501280/514700 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 172646 event pairs, 523 based on Foata normal form. 74/9269 useless extension candidates. Maximal degree in co-relation 85325. Up to 1707 conditions per place. [2021-06-11 00:22:52,988 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 553 selfloop transitions, 509 changer transitions 2/1078 dead transitions. [2021-06-11 00:22:52,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1078 transitions, 53194 flow [2021-06-11 00:22:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:22:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:22:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:22:52,989 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:22:52,989 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:22:52,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:22:52,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:22:52,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:22:52,990 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) [2021-06-11 00:22:52,990 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) [2021-06-11 00:22:52,990 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) [2021-06-11 00:22:52,990 INFO L185 Difference]: Start difference. First operand has 550 places, 1073 transitions, 51046 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:22:52,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1078 transitions, 53194 flow [2021-06-11 00:22:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 1078 transitions, 52180 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-11 00:22:57,952 INFO L241 Difference]: Finished difference. Result has 552 places, 1071 transitions, 50947 flow [2021-06-11 00:22:57,952 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50042, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50947, PETRI_PLACES=552, PETRI_TRANSITIONS=1071} [2021-06-11 00:22:57,952 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 508 predicate places. [2021-06-11 00:22:57,952 INFO L480 AbstractCegarLoop]: Abstraction has has 552 places, 1071 transitions, 50947 flow [2021-06-11 00:22:57,952 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) [2021-06-11 00:22:57,952 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:22:57,953 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:22:57,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-11 00:22:57,953 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]=== [2021-06-11 00:22:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:22:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1286616456, now seen corresponding path program 103 times [2021-06-11 00:22:57,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:22:57,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387298275] [2021-06-11 00:22:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:22:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:22:57,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:57,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:22:57,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:22:57,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:22:57,970 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:22:57,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:22:57,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:22:57,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:22:57,989 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:22:57,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:22:58,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:22:58,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:22:58,046 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:22:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:22:58,070 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:22:58,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:22:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:22:58,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387298275] [2021-06-11 00:22:58,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:22:58,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:22:58,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161640316] [2021-06-11 00:22:58,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:22:58,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:22:58,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:22:58,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:22:58,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:22:58,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 1071 transitions, 50947 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) [2021-06-11 00:22:58,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:22:58,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:22:58,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:23:03,288 INFO L129 PetriNetUnfolder]: 523/9675 cut-off events. [2021-06-11 00:23:03,289 INFO L130 PetriNetUnfolder]: For 500388/513803 co-relation queries the response was YES. [2021-06-11 00:23:03,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85420 conditions, 9675 events. 523/9675 cut-off events. For 500388/513803 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 172454 event pairs, 523 based on Foata normal form. 72/9258 useless extension candidates. Maximal degree in co-relation 85246. Up to 1707 conditions per place. [2021-06-11 00:23:03,406 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 542 selfloop transitions, 518 changer transitions 2/1076 dead transitions. [2021-06-11 00:23:03,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1076 transitions, 53091 flow [2021-06-11 00:23:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:23:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:23:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:23:03,407 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:23:03,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:23:03,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:23:03,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:23:03,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:23:03,408 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) [2021-06-11 00:23:03,408 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) [2021-06-11 00:23:03,408 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) [2021-06-11 00:23:03,408 INFO L185 Difference]: Start difference. First operand has 552 places, 1071 transitions, 50947 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:23:03,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 1076 transitions, 53091 flow [2021-06-11 00:23:08,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1076 transitions, 52424 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-11 00:23:08,601 INFO L241 Difference]: Finished difference. Result has 555 places, 1069 transitions, 51208 flow [2021-06-11 00:23:08,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50290, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51208, PETRI_PLACES=555, PETRI_TRANSITIONS=1069} [2021-06-11 00:23:08,602 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-06-11 00:23:08,602 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 1069 transitions, 51208 flow [2021-06-11 00:23:08,602 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) [2021-06-11 00:23:08,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:23:08,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:23:08,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-11 00:23:08,602 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]=== [2021-06-11 00:23:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:23:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1454337536, now seen corresponding path program 104 times [2021-06-11 00:23:08,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:23:08,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068666388] [2021-06-11 00:23:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:23:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:23:08,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:08,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:23:08,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:08,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:23:08,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:23:08,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:23:08,624 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:23:08,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:23:08,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:23:08,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:23:08,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:23:08,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:23:08,679 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:23:08,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:23:08,703 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:23:08,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:23:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:23:08,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068666388] [2021-06-11 00:23:08,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:23:08,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:23:08,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943734837] [2021-06-11 00:23:08,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:23:08,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:23:08,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:23:08,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:23:08,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:23:08,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1069 transitions, 51208 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) [2021-06-11 00:23:08,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:23:08,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:23:08,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:23:13,869 INFO L129 PetriNetUnfolder]: 523/9662 cut-off events. [2021-06-11 00:23:13,869 INFO L130 PetriNetUnfolder]: For 505101/518527 co-relation queries the response was YES. [2021-06-11 00:23:14,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85649 conditions, 9662 events. 523/9662 cut-off events. For 505101/518527 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 172180 event pairs, 523 based on Foata normal form. 74/9254 useless extension candidates. Maximal degree in co-relation 85475. Up to 1707 conditions per place. [2021-06-11 00:23:14,148 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 536 selfloop transitions, 522 changer transitions 2/1074 dead transitions. [2021-06-11 00:23:14,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1074 transitions, 53348 flow [2021-06-11 00:23:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:23:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:23:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:23:14,149 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:23:14,149 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:23:14,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:23:14,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:23:14,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:23:14,150 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) [2021-06-11 00:23:14,150 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) [2021-06-11 00:23:14,150 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) [2021-06-11 00:23:14,150 INFO L185 Difference]: Start difference. First operand has 555 places, 1069 transitions, 51208 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:23:14,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1074 transitions, 53348 flow [2021-06-11 00:23:19,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1074 transitions, 51957 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-06-11 00:23:19,159 INFO L241 Difference]: Finished difference. Result has 555 places, 1067 transitions, 50742 flow [2021-06-11 00:23:19,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49827, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50742, PETRI_PLACES=555, PETRI_TRANSITIONS=1067} [2021-06-11 00:23:19,160 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-06-11 00:23:19,160 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 1067 transitions, 50742 flow [2021-06-11 00:23:19,160 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) [2021-06-11 00:23:19,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:23:19,160 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:23:19,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-11 00:23:19,161 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]=== [2021-06-11 00:23:19,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:23:19,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1783847306, now seen corresponding path program 105 times [2021-06-11 00:23:19,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:23:19,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599546636] [2021-06-11 00:23:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:23:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:23:19,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:19,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:23:19,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:19,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:23:19,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:23:19,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:23:19,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:23:19,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:23:19,197 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:23:19,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:23:19,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:23:19,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:23:19,241 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:23:19,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:23:19,275 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:23:19,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:23:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:23:19,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599546636] [2021-06-11 00:23:19,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:23:19,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:23:19,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483088696] [2021-06-11 00:23:19,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:23:19,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:23:19,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:23:19,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:23:19,300 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:23:19,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1067 transitions, 50742 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) [2021-06-11 00:23:19,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:23:19,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:23:19,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:23:24,463 INFO L129 PetriNetUnfolder]: 523/9654 cut-off events. [2021-06-11 00:23:24,463 INFO L130 PetriNetUnfolder]: For 498374/511794 co-relation queries the response was YES. [2021-06-11 00:23:24,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85252 conditions, 9654 events. 523/9654 cut-off events. For 498374/511794 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 172067 event pairs, 523 based on Foata normal form. 74/9246 useless extension candidates. Maximal degree in co-relation 85079. Up to 1707 conditions per place. [2021-06-11 00:23:24,560 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 522 changer transitions 1/1072 dead transitions. [2021-06-11 00:23:24,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1072 transitions, 52878 flow [2021-06-11 00:23:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:23:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:23:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:23:24,561 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:23:24,561 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:23:24,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:23:24,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:23:24,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:23:24,562 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) [2021-06-11 00:23:24,562 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) [2021-06-11 00:23:24,562 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) [2021-06-11 00:23:24,562 INFO L185 Difference]: Start difference. First operand has 555 places, 1067 transitions, 50742 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:23:24,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1072 transitions, 52878 flow [2021-06-11 00:23:29,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1072 transitions, 52085 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-06-11 00:23:29,567 INFO L241 Difference]: Finished difference. Result has 559 places, 1066 transitions, 50931 flow [2021-06-11 00:23:29,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49959, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50931, PETRI_PLACES=559, PETRI_TRANSITIONS=1066} [2021-06-11 00:23:29,568 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 515 predicate places. [2021-06-11 00:23:29,568 INFO L480 AbstractCegarLoop]: Abstraction has has 559 places, 1066 transitions, 50931 flow [2021-06-11 00:23:29,568 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) [2021-06-11 00:23:29,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:23:29,568 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:23:29,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-11 00:23:29,568 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]=== [2021-06-11 00:23:29,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:23:29,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1290582502, now seen corresponding path program 106 times [2021-06-11 00:23:29,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:23:29,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117210387] [2021-06-11 00:23:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:23:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:23:29,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:29,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:23:29,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:29,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:23:29,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:23:29,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:23:29,589 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:23:29,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:23:29,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:23:29,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:23:29,638 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:23:29,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:23:29,672 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:23:29,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:23:29,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:23:29,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:23:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:23:29,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117210387] [2021-06-11 00:23:29,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:23:29,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:23:29,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543355731] [2021-06-11 00:23:29,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:23:29,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:23:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:23:29,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:23:29,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:23:29,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1066 transitions, 50931 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) [2021-06-11 00:23:29,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:23:29,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:23:29,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:23:35,061 INFO L129 PetriNetUnfolder]: 523/9647 cut-off events. [2021-06-11 00:23:35,061 INFO L130 PetriNetUnfolder]: For 499161/512581 co-relation queries the response was YES. [2021-06-11 00:23:35,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85769 conditions, 9647 events. 523/9647 cut-off events. For 499161/512581 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 171840 event pairs, 523 based on Foata normal form. 74/9234 useless extension candidates. Maximal degree in co-relation 85596. Up to 1707 conditions per place. [2021-06-11 00:23:35,158 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 522 changer transitions 2/1071 dead transitions. [2021-06-11 00:23:35,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 1071 transitions, 53065 flow [2021-06-11 00:23:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:23:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:23:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:23:35,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:23:35,159 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:23:35,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:23:35,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:23:35,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:23:35,159 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) [2021-06-11 00:23:35,160 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) [2021-06-11 00:23:35,160 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) [2021-06-11 00:23:35,160 INFO L185 Difference]: Start difference. First operand has 559 places, 1066 transitions, 50931 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:23:35,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 1071 transitions, 53065 flow [2021-06-11 00:23:40,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1071 transitions, 52012 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-06-11 00:23:40,249 INFO L241 Difference]: Finished difference. Result has 560 places, 1064 transitions, 50799 flow [2021-06-11 00:23:40,250 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49888, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50799, PETRI_PLACES=560, PETRI_TRANSITIONS=1064} [2021-06-11 00:23:40,250 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 516 predicate places. [2021-06-11 00:23:40,250 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 1064 transitions, 50799 flow [2021-06-11 00:23:40,250 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) [2021-06-11 00:23:40,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:23:40,250 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:23:40,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-11 00:23:40,250 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]=== [2021-06-11 00:23:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:23:40,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2113595394, now seen corresponding path program 107 times [2021-06-11 00:23:40,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:23:40,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859816470] [2021-06-11 00:23:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:23:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:23:40,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:40,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:23:40,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:40,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:23:40,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:23:40,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:23:40,273 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:23:40,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:23:40,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:23:40,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:23:40,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:23:40,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:23:40,319 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:23:40,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:23:40,344 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:23:40,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:23:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:23:40,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859816470] [2021-06-11 00:23:40,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:23:40,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:23:40,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294210783] [2021-06-11 00:23:40,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:23:40,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:23:40,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:23:40,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:23:40,368 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:23:40,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1064 transitions, 50799 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) [2021-06-11 00:23:40,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:23:40,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:23:40,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:23:45,685 INFO L129 PetriNetUnfolder]: 523/9639 cut-off events. [2021-06-11 00:23:45,685 INFO L130 PetriNetUnfolder]: For 498042/511462 co-relation queries the response was YES. [2021-06-11 00:23:45,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85714 conditions, 9639 events. 523/9639 cut-off events. For 498042/511462 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 171786 event pairs, 523 based on Foata normal form. 74/9226 useless extension candidates. Maximal degree in co-relation 85542. Up to 1707 conditions per place. [2021-06-11 00:23:45,783 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 526 selfloop transitions, 528 changer transitions 1/1069 dead transitions. [2021-06-11 00:23:45,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1069 transitions, 52929 flow [2021-06-11 00:23:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:23:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:23:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:23:45,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:23:45,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:23:45,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:23:45,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:23:45,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:23:45,785 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) [2021-06-11 00:23:45,785 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) [2021-06-11 00:23:45,785 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) [2021-06-11 00:23:45,785 INFO L185 Difference]: Start difference. First operand has 560 places, 1064 transitions, 50799 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:23:45,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1069 transitions, 52929 flow [2021-06-11 00:23:50,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 1069 transitions, 51887 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-06-11 00:23:50,744 INFO L241 Difference]: Finished difference. Result has 562 places, 1063 transitions, 50750 flow [2021-06-11 00:23:50,745 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49767, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50750, PETRI_PLACES=562, PETRI_TRANSITIONS=1063} [2021-06-11 00:23:50,745 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 518 predicate places. [2021-06-11 00:23:50,745 INFO L480 AbstractCegarLoop]: Abstraction has has 562 places, 1063 transitions, 50750 flow [2021-06-11 00:23:50,745 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) [2021-06-11 00:23:50,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:23:50,745 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:23:50,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-11 00:23:50,745 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]=== [2021-06-11 00:23:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:23:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash -420133374, now seen corresponding path program 108 times [2021-06-11 00:23:50,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:23:50,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537753372] [2021-06-11 00:23:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:23:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:23:50,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:50,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:23:50,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:23:50,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:23:50,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:23:50,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:23:50,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:23:50,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:23:50,782 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:23:50,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:23:50,809 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:23:50,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:23:50,841 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:23:50,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:23:50,865 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:23:50,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:23:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:23:50,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537753372] [2021-06-11 00:23:50,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:23:50,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:23:50,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324987503] [2021-06-11 00:23:50,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:23:50,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:23:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:23:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:23:50,889 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:23:50,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 1063 transitions, 50750 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) [2021-06-11 00:23:50,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:23:50,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:23:50,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:23:56,007 INFO L129 PetriNetUnfolder]: 523/9634 cut-off events. [2021-06-11 00:23:56,007 INFO L130 PetriNetUnfolder]: For 493974/507389 co-relation queries the response was YES. [2021-06-11 00:23:56,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85757 conditions, 9634 events. 523/9634 cut-off events. For 493974/507389 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 171640 event pairs, 523 based on Foata normal form. 72/9219 useless extension candidates. Maximal degree in co-relation 85586. Up to 1707 conditions per place. [2021-06-11 00:23:56,104 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 532 selfloop transitions, 520 changer transitions 2/1068 dead transitions. [2021-06-11 00:23:56,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1068 transitions, 52878 flow [2021-06-11 00:23:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:23:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:23:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:23:56,105 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:23:56,106 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:23:56,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:23:56,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:23:56,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:23:56,106 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) [2021-06-11 00:23:56,106 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) [2021-06-11 00:23:56,107 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) [2021-06-11 00:23:56,107 INFO L185 Difference]: Start difference. First operand has 562 places, 1063 transitions, 50750 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:23:56,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1068 transitions, 52878 flow [2021-06-11 00:24:01,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1068 transitions, 52352 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-11 00:24:01,617 INFO L241 Difference]: Finished difference. Result has 566 places, 1061 transitions, 51137 flow [2021-06-11 00:24:01,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50234, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51137, PETRI_PLACES=566, PETRI_TRANSITIONS=1061} [2021-06-11 00:24:01,618 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 522 predicate places. [2021-06-11 00:24:01,618 INFO L480 AbstractCegarLoop]: Abstraction has has 566 places, 1061 transitions, 51137 flow [2021-06-11 00:24:01,618 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) [2021-06-11 00:24:01,618 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:24:01,618 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:24:01,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-11 00:24:01,618 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]=== [2021-06-11 00:24:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:24:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash 555544842, now seen corresponding path program 109 times [2021-06-11 00:24:01,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:24:01,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132959736] [2021-06-11 00:24:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:24:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:24:01,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:01,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:24:01,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:01,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:24:01,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:24:01,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:24:01,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:24:01,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:24:01,648 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:24:01,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:24:01,663 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:24:01,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:24:01,682 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:24:01,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:24:01,707 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:24:01,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:24:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:24:01,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132959736] [2021-06-11 00:24:01,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:24:01,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:24:01,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623354910] [2021-06-11 00:24:01,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:24:01,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:24:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:24:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:24:01,731 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:24:01,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1061 transitions, 51137 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) [2021-06-11 00:24:01,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:24:01,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:24:01,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:24:07,075 INFO L129 PetriNetUnfolder]: 523/9626 cut-off events. [2021-06-11 00:24:07,076 INFO L130 PetriNetUnfolder]: For 500390/513816 co-relation queries the response was YES. [2021-06-11 00:24:07,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86474 conditions, 9626 events. 523/9626 cut-off events. For 500390/513816 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 171423 event pairs, 523 based on Foata normal form. 74/9213 useless extension candidates. Maximal degree in co-relation 86303. Up to 1707 conditions per place. [2021-06-11 00:24:07,187 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 534 selfloop transitions, 517 changer transitions 1/1066 dead transitions. [2021-06-11 00:24:07,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1066 transitions, 53261 flow [2021-06-11 00:24:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:24:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:24:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:24:07,188 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:24:07,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:24:07,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:24:07,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:24:07,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:24:07,188 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) [2021-06-11 00:24:07,189 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) [2021-06-11 00:24:07,189 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) [2021-06-11 00:24:07,189 INFO L185 Difference]: Start difference. First operand has 566 places, 1061 transitions, 51137 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:24:07,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1066 transitions, 53261 flow [2021-06-11 00:24:12,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1066 transitions, 51887 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-06-11 00:24:12,601 INFO L241 Difference]: Finished difference. Result has 567 places, 1060 transitions, 50732 flow [2021-06-11 00:24:12,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49773, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50732, PETRI_PLACES=567, PETRI_TRANSITIONS=1060} [2021-06-11 00:24:12,602 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 523 predicate places. [2021-06-11 00:24:12,602 INFO L480 AbstractCegarLoop]: Abstraction has has 567 places, 1060 transitions, 50732 flow [2021-06-11 00:24:12,602 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) [2021-06-11 00:24:12,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:24:12,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:24:12,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-11 00:24:12,603 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]=== [2021-06-11 00:24:12,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:24:12,603 INFO L82 PathProgramCache]: Analyzing trace with hash -403407384, now seen corresponding path program 110 times [2021-06-11 00:24:12,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:24:12,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167973490] [2021-06-11 00:24:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:24:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:24:12,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:12,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:24:12,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:12,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:24:12,615 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:24:12,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:24:12,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:24:12,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:24:12,633 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:24:12,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:24:12,648 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:24:12,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:24:12,680 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:24:12,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:24:12,705 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:24:12,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:24:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:24:12,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167973490] [2021-06-11 00:24:12,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:24:12,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:24:12,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499318014] [2021-06-11 00:24:12,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:24:12,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:24:12,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:24:12,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:24:12,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:24:12,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 1060 transitions, 50732 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) [2021-06-11 00:24:12,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:24:12,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:24:12,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:24:17,846 INFO L129 PetriNetUnfolder]: 523/9620 cut-off events. [2021-06-11 00:24:17,846 INFO L130 PetriNetUnfolder]: For 494074/507494 co-relation queries the response was YES. [2021-06-11 00:24:17,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86087 conditions, 9620 events. 523/9620 cut-off events. For 494074/507494 co-relation queries the response was YES. Maximal size of possible extension queue 1507. Compared 171350 event pairs, 523 based on Foata normal form. 74/9212 useless extension candidates. Maximal degree in co-relation 85916. Up to 1707 conditions per place. [2021-06-11 00:24:17,936 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 523 selfloop transitions, 527 changer transitions 1/1065 dead transitions. [2021-06-11 00:24:17,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1065 transitions, 52854 flow [2021-06-11 00:24:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:24:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:24:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:24:17,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:24:17,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:24:17,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:24:17,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:24:17,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:24:17,938 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) [2021-06-11 00:24:17,939 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) [2021-06-11 00:24:17,939 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) [2021-06-11 00:24:17,939 INFO L185 Difference]: Start difference. First operand has 567 places, 1060 transitions, 50732 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:24:17,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1065 transitions, 52854 flow [2021-06-11 00:24:22,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 1065 transitions, 51887 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-06-11 00:24:22,947 INFO L241 Difference]: Finished difference. Result has 569 places, 1059 transitions, 50750 flow [2021-06-11 00:24:22,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49775, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50750, PETRI_PLACES=569, PETRI_TRANSITIONS=1059} [2021-06-11 00:24:22,948 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 525 predicate places. [2021-06-11 00:24:22,948 INFO L480 AbstractCegarLoop]: Abstraction has has 569 places, 1059 transitions, 50750 flow [2021-06-11 00:24:22,948 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) [2021-06-11 00:24:22,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:24:22,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:24:22,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-11 00:24:22,948 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]=== [2021-06-11 00:24:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:24:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1056265780, now seen corresponding path program 111 times [2021-06-11 00:24:22,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:24:22,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629457893] [2021-06-11 00:24:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:24:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:24:22,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:22,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:24:22,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:22,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:24:22,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:24:22,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:24:22,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:24:22,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:24:22,988 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:24:22,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:24:23,003 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:24:23,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:24:23,022 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:24:23,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:24:23,047 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:24:23,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:24:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:24:23,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629457893] [2021-06-11 00:24:23,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:24:23,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:24:23,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015143484] [2021-06-11 00:24:23,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:24:23,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:24:23,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:24:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:24:23,072 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:24:23,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 1059 transitions, 50750 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) [2021-06-11 00:24:23,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:24:23,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:24:23,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:24:28,150 INFO L129 PetriNetUnfolder]: 523/9614 cut-off events. [2021-06-11 00:24:28,150 INFO L130 PetriNetUnfolder]: For 492792/506212 co-relation queries the response was YES. [2021-06-11 00:24:28,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86153 conditions, 9614 events. 523/9614 cut-off events. For 492792/506212 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 171210 event pairs, 523 based on Foata normal form. 74/9206 useless extension candidates. Maximal degree in co-relation 85983. Up to 1707 conditions per place. [2021-06-11 00:24:28,252 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 515 changer transitions 2/1064 dead transitions. [2021-06-11 00:24:28,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 1064 transitions, 52870 flow [2021-06-11 00:24:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:24:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:24:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:24:28,253 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:24:28,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:24:28,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:24:28,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:24:28,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:24:28,254 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) [2021-06-11 00:24:28,254 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) [2021-06-11 00:24:28,254 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) [2021-06-11 00:24:28,254 INFO L185 Difference]: Start difference. First operand has 569 places, 1059 transitions, 50750 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:24:28,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 1064 transitions, 52870 flow [2021-06-11 00:24:33,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1064 transitions, 51669 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-06-11 00:24:33,188 INFO L241 Difference]: Finished difference. Result has 570 places, 1057 transitions, 50449 flow [2021-06-11 00:24:33,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49559, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50449, PETRI_PLACES=570, PETRI_TRANSITIONS=1057} [2021-06-11 00:24:33,188 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 526 predicate places. [2021-06-11 00:24:33,188 INFO L480 AbstractCegarLoop]: Abstraction has has 570 places, 1057 transitions, 50449 flow [2021-06-11 00:24:33,188 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) [2021-06-11 00:24:33,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:24:33,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:24:33,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-11 00:24:33,189 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]=== [2021-06-11 00:24:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:24:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1741496410, now seen corresponding path program 112 times [2021-06-11 00:24:33,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:24:33,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261182322] [2021-06-11 00:24:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:24:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:24:33,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:33,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:24:33,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:33,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:24:33,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:24:33,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:24:33,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:24:33,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:24:33,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:24:33,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:24:33,241 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:24:33,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:24:33,275 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:24:33,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:24:33,303 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:24:33,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:24:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:24:33,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261182322] [2021-06-11 00:24:33,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:24:33,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:24:33,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106947556] [2021-06-11 00:24:33,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:24:33,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:24:33,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:24:33,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:24:33,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:24:33,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1057 transitions, 50449 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) [2021-06-11 00:24:33,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:24:33,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:24:33,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:24:38,473 INFO L129 PetriNetUnfolder]: 523/9607 cut-off events. [2021-06-11 00:24:38,473 INFO L130 PetriNetUnfolder]: For 488721/502141 co-relation queries the response was YES. [2021-06-11 00:24:38,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85762 conditions, 9607 events. 523/9607 cut-off events. For 488721/502141 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 171055 event pairs, 523 based on Foata normal form. 74/9195 useless extension candidates. Maximal degree in co-relation 85593. Up to 1707 conditions per place. [2021-06-11 00:24:38,571 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 522 selfloop transitions, 524 changer transitions 2/1062 dead transitions. [2021-06-11 00:24:38,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1062 transitions, 52565 flow [2021-06-11 00:24:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:24:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:24:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:24:38,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:24:38,572 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:24:38,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:24:38,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:24:38,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:24:38,573 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) [2021-06-11 00:24:38,573 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) [2021-06-11 00:24:38,573 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) [2021-06-11 00:24:38,573 INFO L185 Difference]: Start difference. First operand has 570 places, 1057 transitions, 50449 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:24:38,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1062 transitions, 52565 flow [2021-06-11 00:24:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1062 transitions, 51541 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:24:43,570 INFO L241 Difference]: Finished difference. Result has 572 places, 1055 transitions, 50357 flow [2021-06-11 00:24:43,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49435, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50357, PETRI_PLACES=572, PETRI_TRANSITIONS=1055} [2021-06-11 00:24:43,570 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 528 predicate places. [2021-06-11 00:24:43,570 INFO L480 AbstractCegarLoop]: Abstraction has has 572 places, 1055 transitions, 50357 flow [2021-06-11 00:24:43,570 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) [2021-06-11 00:24:43,571 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:24:43,571 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:24:43,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-11 00:24:43,571 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]=== [2021-06-11 00:24:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:24:43,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1878957672, now seen corresponding path program 113 times [2021-06-11 00:24:43,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:24:43,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557239439] [2021-06-11 00:24:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:24:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:24:43,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:43,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:24:43,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:43,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:24:43,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:24:43,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:24:43,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:24:43,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:24:43,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:24:43,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:24:43,622 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:24:43,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:24:43,642 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 00:24:43,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 00:24:43,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:24:43,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:24:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:24:43,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557239439] [2021-06-11 00:24:43,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:24:43,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:24:43,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085902134] [2021-06-11 00:24:43,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:24:43,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:24:43,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:24:43,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:24:43,691 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:24:43,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1055 transitions, 50357 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) [2021-06-11 00:24:43,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:24:43,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:24:43,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:24:48,904 INFO L129 PetriNetUnfolder]: 523/9591 cut-off events. [2021-06-11 00:24:48,904 INFO L130 PetriNetUnfolder]: For 486083/499498 co-relation queries the response was YES. [2021-06-11 00:24:48,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85473 conditions, 9591 events. 523/9591 cut-off events. For 486083/499498 co-relation queries the response was YES. Maximal size of possible extension queue 1502. Compared 170634 event pairs, 523 based on Foata normal form. 72/9179 useless extension candidates. Maximal degree in co-relation 85304. Up to 1707 conditions per place. [2021-06-11 00:24:49,006 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 523 selfloop transitions, 521 changer transitions 2/1060 dead transitions. [2021-06-11 00:24:49,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1060 transitions, 52469 flow [2021-06-11 00:24:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:24:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:24:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:24:49,007 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:24:49,007 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:24:49,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:24:49,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:24:49,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:24:49,007 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) [2021-06-11 00:24:49,008 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) [2021-06-11 00:24:49,008 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) [2021-06-11 00:24:49,008 INFO L185 Difference]: Start difference. First operand has 572 places, 1055 transitions, 50357 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:24:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1060 transitions, 52469 flow [2021-06-11 00:24:54,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1060 transitions, 51438 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-11 00:24:54,140 INFO L241 Difference]: Finished difference. Result has 574 places, 1053 transitions, 50234 flow [2021-06-11 00:24:54,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49336, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50234, PETRI_PLACES=574, PETRI_TRANSITIONS=1053} [2021-06-11 00:24:54,141 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 530 predicate places. [2021-06-11 00:24:54,141 INFO L480 AbstractCegarLoop]: Abstraction has has 574 places, 1053 transitions, 50234 flow [2021-06-11 00:24:54,141 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) [2021-06-11 00:24:54,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:24:54,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:24:54,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-11 00:24:54,141 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]=== [2021-06-11 00:24:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:24:54,141 INFO L82 PathProgramCache]: Analyzing trace with hash -939411744, now seen corresponding path program 114 times [2021-06-11 00:24:54,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:24:54,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812693279] [2021-06-11 00:24:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:24:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:24:54,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:54,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:24:54,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:24:54,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:24:54,157 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:24:54,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:24:54,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:24:54,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:24:54,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:24:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:24:54,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:24:54,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:24:54,211 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:24:54,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:24:54,235 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:24:54,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:24:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:24:54,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812693279] [2021-06-11 00:24:54,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:24:54,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:24:54,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815061952] [2021-06-11 00:24:54,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:24:54,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:24:54,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:24:54,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:24:54,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:24:54,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 1053 transitions, 50234 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) [2021-06-11 00:24:54,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:24:54,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:24:54,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:24:59,401 INFO L129 PetriNetUnfolder]: 523/9585 cut-off events. [2021-06-11 00:24:59,401 INFO L130 PetriNetUnfolder]: For 485573/498988 co-relation queries the response was YES. [2021-06-11 00:24:59,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85426 conditions, 9585 events. 523/9585 cut-off events. For 485573/498988 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 170545 event pairs, 523 based on Foata normal form. 72/9174 useless extension candidates. Maximal degree in co-relation 85257. Up to 1707 conditions per place. [2021-06-11 00:24:59,522 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 518 changer transitions 2/1058 dead transitions. [2021-06-11 00:24:59,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1058 transitions, 52342 flow [2021-06-11 00:24:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:24:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:24:59,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:24:59,523 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:24:59,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:24:59,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:24:59,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:24:59,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:24:59,524 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) [2021-06-11 00:24:59,524 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) [2021-06-11 00:24:59,524 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) [2021-06-11 00:24:59,524 INFO L185 Difference]: Start difference. First operand has 574 places, 1053 transitions, 50234 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:24:59,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1058 transitions, 52342 flow [2021-06-11 00:25:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 1058 transitions, 51327 flow, removed 15 selfloop flow, removed 6 redundant places. [2021-06-11 00:25:04,568 INFO L241 Difference]: Finished difference. Result has 576 places, 1051 transitions, 50132 flow [2021-06-11 00:25:04,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49229, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50132, PETRI_PLACES=576, PETRI_TRANSITIONS=1051} [2021-06-11 00:25:04,569 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 532 predicate places. [2021-06-11 00:25:04,569 INFO L480 AbstractCegarLoop]: Abstraction has has 576 places, 1051 transitions, 50132 flow [2021-06-11 00:25:04,569 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) [2021-06-11 00:25:04,569 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:25:04,569 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:25:04,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-11 00:25:04,569 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]=== [2021-06-11 00:25:04,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:25:04,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1331962708, now seen corresponding path program 115 times [2021-06-11 00:25:04,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:25:04,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727128863] [2021-06-11 00:25:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:25:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:25:04,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:25:04,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:25:04,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:25:04,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:25:04,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 00:25:04,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 00:25:04,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:25:04,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:25:04,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:25:04,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:25:04,623 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:25:04,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:25:04,645 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:25:04,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:25:04,674 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-11 00:25:04,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 00:25:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:25:04,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727128863] [2021-06-11 00:25:04,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:25:04,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-11 00:25:04,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636028179] [2021-06-11 00:25:04,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-11 00:25:04,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:25:04,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-11 00:25:04,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-11 00:25:04,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-06-11 00:25:04,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 1051 transitions, 50132 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) [2021-06-11 00:25:04,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:25:04,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-06-11 00:25:04,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:25:09,982 INFO L129 PetriNetUnfolder]: 523/9576 cut-off events. [2021-06-11 00:25:09,982 INFO L130 PetriNetUnfolder]: For 482287/495707 co-relation queries the response was YES. [2021-06-11 00:25:10,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85426 conditions, 9576 events. 523/9576 cut-off events. For 482287/495707 co-relation queries the response was YES. Maximal size of possible extension queue 1500. Compared 170320 event pairs, 523 based on Foata normal form. 74/9171 useless extension candidates. Maximal degree in co-relation 85258. Up to 1745 conditions per place. [2021-06-11 00:25:10,078 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 539 changer transitions 1/1110 dead transitions. [2021-06-11 00:25:10,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1110 transitions, 54915 flow [2021-06-11 00:25:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 00:25:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 00:25:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-11 00:25:10,079 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-06-11 00:25:10,079 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-11 00:25:10,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-11 00:25:10,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:25:10,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-11 00:25:10,080 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) [2021-06-11 00:25:10,080 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) [2021-06-11 00:25:10,081 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) [2021-06-11 00:25:10,081 INFO L185 Difference]: Start difference. First operand has 576 places, 1051 transitions, 50132 flow. Second operand 9 states and 674 transitions. [2021-06-11 00:25:10,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1110 transitions, 54915 flow Received shutdown request... [2021-06-11 00:25:11,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-11 00:25:11,566 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-11 00:25:11,569 WARN L224 ceAbstractionStarter]: Timeout [2021-06-11 00:25:11,570 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 12:25:11 BasicIcfg [2021-06-11 00:25:11,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 00:25:11,570 INFO L168 Benchmark]: Toolchain (without parser) took 805574.28 ms. Allocated memory was 360.7 MB in the beginning and 13.8 GB in the end (delta: 13.4 GB). Free memory was 340.4 MB in the beginning and 10.7 GB in the end (delta: -10.4 GB). Peak memory consumption was 3.6 GB. Max. memory is 16.0 GB. [2021-06-11 00:25:11,570 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 360.7 MB. Free memory was 341.5 MB in the beginning and 341.4 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 00:25:11,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.86 ms. Allocated memory is still 360.7 MB. Free memory was 340.3 MB in the beginning and 338.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 00:25:11,570 INFO L168 Benchmark]: Boogie Preprocessor took 13.64 ms. Allocated memory is still 360.7 MB. Free memory was 338.8 MB in the beginning and 337.9 MB in the end (delta: 890.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 00:25:11,570 INFO L168 Benchmark]: RCFGBuilder took 222.60 ms. Allocated memory is still 360.7 MB. Free memory was 337.9 MB in the beginning and 327.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-11 00:25:11,571 INFO L168 Benchmark]: TraceAbstraction took 805305.42 ms. Allocated memory was 360.7 MB in the beginning and 13.8 GB in the end (delta: 13.4 GB). Free memory was 326.6 MB in the beginning and 10.7 GB in the end (delta: -10.4 GB). Peak memory consumption was 3.5 GB. Max. memory is 16.0 GB. [2021-06-11 00:25:11,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 360.7 MB. Free memory was 341.5 MB in the beginning and 341.4 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.86 ms. Allocated memory is still 360.7 MB. Free memory was 340.3 MB in the beginning and 338.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.64 ms. Allocated memory is still 360.7 MB. Free memory was 338.8 MB in the beginning and 337.9 MB in the end (delta: 890.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 222.60 ms. Allocated memory is still 360.7 MB. Free memory was 337.9 MB in the beginning and 327.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 805305.42 ms. Allocated memory was 360.7 MB in the beginning and 13.8 GB in the end (delta: 13.4 GB). Free memory was 326.6 MB in the beginning and 10.7 GB in the end (delta: -10.4 GB). Peak memory consumption was 3.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 254.4ms, 51 PlacesBefore, 44 PlacesAfterwards, 71 TransitionsBefore, 64 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, 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: 357, positive: 357, positive conditional: 0, positive unconditional: 357, 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: 357, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 357, unknown conditional: 0, unknown unconditional: 357] , Statistics on independence cache: Total cache size (in pairs): 399, Positive cache size: 399, Positive conditional cache size: 0, Positive unconditional cache size: 399, 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: 42.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 805111.6ms, OverallIterations: 121, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 786830.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 496.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2653 SDtfs, 4045 SDslu, 2578 SDs, 0 SdLazy, 4612 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3595.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1053 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 926 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 18328.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51208occurred in iteration=109, InterpolantAutomatonStates: 1044, 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: 58.9ms SsaConstructionTime, 166.9ms SatisfiabilityAnalysisTime, 16957.2ms InterpolantComputationTime, 2662 NumberOfCodeBlocks, 2662 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 2541 ConstructedInterpolants, 0 QuantifiedInterpolants, 71854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 121 InterpolantComputations, 121 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