/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:51:19,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:51:19,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:51:19,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:51:19,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:51:19,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:51:19,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:51:19,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:51:19,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:51:19,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:51:19,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:51:19,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:51:19,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:51:19,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:51:19,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:51:19,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:51:19,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:51:19,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:51:19,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:51:19,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:51:19,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:51:19,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:51:19,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:51:19,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:51:19,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 14:51:19,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 14:51:19,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 14:51:19,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 14:51:19,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 14:51:19,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 14:51:19,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:51:19,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:51:19,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:51:19,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:51:19,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:51:19,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:51:19,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:51:19,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:51:19,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:51:19,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:51:19,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:51:19,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 14:51:19,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:51:19,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:51:19,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:51:19,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:51:19,679 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:51:19,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:51:19,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:51:19,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:51:19,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:51:19,681 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:51:19,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:51:19,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:51:19,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:51:19,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:51:19,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:51:19,930 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:51:19,931 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:51:19,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-06-10 14:51:19,932 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-06-10 14:51:19,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:51:19,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:51:19,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:51:19,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:51:19,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:51:19,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:19,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:51:20,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:51:20,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:51:20,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:51:20,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... [2021-06-10 14:51:20,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:51:20,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:51:20,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:51:20,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:51:20,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:51:20,103 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-10 14:51:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-10 14:51:20,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-10 14:51:20,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-10 14:51:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-10 14:51:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-10 14:51:20,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-10 14:51:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-10 14:51:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-10 14:51:20,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-10 14:51:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-10 14:51:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-10 14:51:20,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-10 14:51:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-10 14:51:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-10 14:51:20,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:51:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:51:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:51:20,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-10 14:51:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-10 14:51:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-10 14:51:20,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-10 14:51:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-10 14:51:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-10 14:51:20,108 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:51:20,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:51:20,228 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:51:20,229 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:51:20 BoogieIcfgContainer [2021-06-10 14:51:20,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:51:20,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:51:20,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:51:20,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:51:20,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:19" (1/2) ... [2021-06-10 14:51:20,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1340df28 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:51:20, skipping insertion in model container [2021-06-10 14:51:20,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:51:20" (2/2) ... [2021-06-10 14:51:20,234 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-06-10 14:51:20,238 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:51:20,240 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:51:20,241 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:51:20,343 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-06-10 14:51:20,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-06-10 14:51:20,368 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:51:20,369 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:51:20,369 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:51:20,369 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:51:20,369 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:51:20,369 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:51:20,369 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:51:20,369 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:51:20,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-06-10 14:51:20,480 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-06-10 14:51:20,480 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-06-10 14:51:20,490 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. [2021-06-10 14:51:20,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-06-10 14:51:20,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-06-10 14:51:20,576 INFO L129 PetriNetUnfolder]: 321/469 cut-off events. [2021-06-10 14:51:20,576 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-06-10 14:51:20,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:20,577 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:20,577 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]=== [2021-06-10 14:51:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2083937691, now seen corresponding path program 1 times [2021-06-10 14:51:20,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:20,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658259815] [2021-06-10 14:51:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:20,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:20,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:20,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:20,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658259815] [2021-06-10 14:51:20,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:20,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:20,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168559106] [2021-06-10 14:51:20,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:20,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:20,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:20,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:20,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-06-10 14:51:20,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 71 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:20,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-06-10 14:51:20,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:20,829 INFO L129 PetriNetUnfolder]: 135/227 cut-off events. [2021-06-10 14:51:20,829 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-06-10 14:51:20,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 227 events. 135/227 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 767 event pairs, 0 based on Foata normal form. 57/284 useless extension candidates. Maximal degree in co-relation 401. Up to 60 conditions per place. [2021-06-10 14:51:20,834 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 2 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2021-06-10 14:51:20,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 291 flow [2021-06-10 14:51:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-06-10 14:51:20,844 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-06-10 14:51:20,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-06-10 14:51:20,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-06-10 14:51:20,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:20,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-06-10 14:51:20,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,863 INFO L185 Difference]: Start difference. First operand has 51 places, 71 transitions, 310 flow. Second operand 3 states and 224 transitions. [2021-06-10 14:51:20,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 291 flow [2021-06-10 14:51:20,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 189 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-06-10 14:51:20,878 INFO L241 Difference]: Finished difference. Result has 39 places, 66 transitions, 185 flow [2021-06-10 14:51:20,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=39, PETRI_TRANSITIONS=66} [2021-06-10 14:51:20,880 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2021-06-10 14:51:20,880 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 66 transitions, 185 flow [2021-06-10 14:51:20,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:20,881 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:20,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:51:20,881 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]=== [2021-06-10 14:51:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:20,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1355406023, now seen corresponding path program 1 times [2021-06-10 14:51:20,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:20,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288814715] [2021-06-10 14:51:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:20,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:20,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:20,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:20,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288814715] [2021-06-10 14:51:20,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:20,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:20,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022790403] [2021-06-10 14:51:20,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:20,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:20,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:20,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:20,935 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-06-10 14:51:20,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 66 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:20,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-06-10 14:51:20,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:20,965 INFO L129 PetriNetUnfolder]: 130/221 cut-off events. [2021-06-10 14:51:20,965 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-06-10 14:51:20,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 221 events. 130/221 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 716 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 248. Up to 60 conditions per place. [2021-06-10 14:51:20,967 INFO L132 encePairwiseOnDemand]: 78/80 looper letters, 6 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-06-10 14:51:20,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 196 flow [2021-06-10 14:51:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-06-10 14:51:20,975 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-06-10 14:51:20,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-06-10 14:51:20,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-06-10 14:51:20,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:20,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-06-10 14:51:20,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,984 INFO L185 Difference]: Start difference. First operand has 39 places, 66 transitions, 185 flow. Second operand 3 states and 224 transitions. [2021-06-10 14:51:20,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 196 flow [2021-06-10 14:51:20,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:20,988 INFO L241 Difference]: Finished difference. Result has 40 places, 65 transitions, 183 flow [2021-06-10 14:51:20,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=40, PETRI_TRANSITIONS=65} [2021-06-10 14:51:20,989 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -11 predicate places. [2021-06-10 14:51:20,989 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 65 transitions, 183 flow [2021-06-10 14:51:20,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:20,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:20,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:51:20,990 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]=== [2021-06-10 14:51:20,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1622642711, now seen corresponding path program 1 times [2021-06-10 14:51:20,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:20,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273557214] [2021-06-10 14:51:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:21,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273557214] [2021-06-10 14:51:21,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:21,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280684583] [2021-06-10 14:51:21,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:21,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:21,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:21,013 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-06-10 14:51:21,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 65 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-06-10 14:51:21,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,030 INFO L129 PetriNetUnfolder]: 106/191 cut-off events. [2021-06-10 14:51:21,030 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-10 14:51:21,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 191 events. 106/191 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 622 event pairs, 0 based on Foata normal form. 5/196 useless extension candidates. Maximal degree in co-relation 223. Up to 60 conditions per place. [2021-06-10 14:51:21,031 INFO L132 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2021-06-10 14:51:21,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 189 flow [2021-06-10 14:51:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-06-10 14:51:21,033 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-06-10 14:51:21,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,034 INFO L185 Difference]: Start difference. First operand has 40 places, 65 transitions, 183 flow. Second operand 3 states and 224 transitions. [2021-06-10 14:51:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 189 flow [2021-06-10 14:51:21,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:21,036 INFO L241 Difference]: Finished difference. Result has 41 places, 63 transitions, 178 flow [2021-06-10 14:51:21,036 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=41, PETRI_TRANSITIONS=63} [2021-06-10 14:51:21,036 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2021-06-10 14:51:21,036 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 63 transitions, 178 flow [2021-06-10 14:51:21,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,036 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,036 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:51:21,037 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]=== [2021-06-10 14:51:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash 751708351, now seen corresponding path program 1 times [2021-06-10 14:51:21,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207852794] [2021-06-10 14:51:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:21,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207852794] [2021-06-10 14:51:21,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:21,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952346641] [2021-06-10 14:51:21,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:21,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:21,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:21,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-06-10 14:51:21,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-06-10 14:51:21,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,067 INFO L129 PetriNetUnfolder]: 61/131 cut-off events. [2021-06-10 14:51:21,067 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-06-10 14:51:21,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 131 events. 61/131 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 386 event pairs, 0 based on Foata normal form. 10/141 useless extension candidates. Maximal degree in co-relation 154. Up to 30 conditions per place. [2021-06-10 14:51:21,068 INFO L132 encePairwiseOnDemand]: 76/80 looper letters, 4 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2021-06-10 14:51:21,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 179 flow [2021-06-10 14:51:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-06-10 14:51:21,069 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-06-10 14:51:21,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,070 INFO L185 Difference]: Start difference. First operand has 41 places, 63 transitions, 178 flow. Second operand 3 states and 224 transitions. [2021-06-10 14:51:21,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 179 flow [2021-06-10 14:51:21,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:21,072 INFO L241 Difference]: Finished difference. Result has 42 places, 60 transitions, 170 flow [2021-06-10 14:51:21,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=42, PETRI_TRANSITIONS=60} [2021-06-10 14:51:21,072 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2021-06-10 14:51:21,072 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 60 transitions, 170 flow [2021-06-10 14:51:21,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,072 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,073 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:51:21,073 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]=== [2021-06-10 14:51:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash -92000961, now seen corresponding path program 1 times [2021-06-10 14:51:21,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688760574] [2021-06-10 14:51:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:21,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688760574] [2021-06-10 14:51:21,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:21,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102643540] [2021-06-10 14:51:21,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:21,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:21,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:21,091 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-06-10 14:51:21,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 60 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-06-10 14:51:21,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,101 INFO L129 PetriNetUnfolder]: 10/49 cut-off events. [2021-06-10 14:51:21,101 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-06-10 14:51:21,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 49 events. 10/49 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 16/65 useless extension candidates. Maximal degree in co-relation 57. Up to 8 conditions per place. [2021-06-10 14:51:21,102 INFO L132 encePairwiseOnDemand]: 73/80 looper letters, 1 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2021-06-10 14:51:21,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 123 flow [2021-06-10 14:51:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-06-10 14:51:21,103 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-06-10 14:51:21,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-06-10 14:51:21,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,105 INFO L185 Difference]: Start difference. First operand has 42 places, 60 transitions, 170 flow. Second operand 3 states and 224 transitions. [2021-06-10 14:51:21,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 123 flow [2021-06-10 14:51:21,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:21,108 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2021-06-10 14:51:21,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-06-10 14:51:21,108 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2021-06-10 14:51:21,108 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2021-06-10 14:51:21,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,109 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:51:21,109 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]=== [2021-06-10 14:51:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1321056479, now seen corresponding path program 1 times [2021-06-10 14:51:21,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664732303] [2021-06-10 14:51:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:21,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664732303] [2021-06-10 14:51:21,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:21,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527245755] [2021-06-10 14:51:21,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:21,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:21,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:21,135 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-06-10 14:51:21,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-06-10 14:51:21,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,141 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-06-10 14:51:21,141 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-10 14:51:21,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 29 events. 0/29 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 14:51:21,141 INFO L132 encePairwiseOnDemand]: 75/80 looper letters, 1 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2021-06-10 14:51:21,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 82 flow [2021-06-10 14:51:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-06-10 14:51:21,142 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.925 [2021-06-10 14:51:21,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-06-10 14:51:21,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-06-10 14:51:21,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-06-10 14:51:21,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,143 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 222 transitions. [2021-06-10 14:51:21,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 82 flow [2021-06-10 14:51:21,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 29 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:21,144 INFO L241 Difference]: Finished difference. Result has 44 places, 29 transitions, 79 flow [2021-06-10 14:51:21,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2021-06-10 14:51:21,144 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -7 predicate places. [2021-06-10 14:51:21,144 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 79 flow [2021-06-10 14:51:21,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,145 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,145 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:51:21,145 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]=== [2021-06-10 14:51:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1061433261, now seen corresponding path program 1 times [2021-06-10 14:51:21,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410301757] [2021-06-10 14:51:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:21,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:21,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:21,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:21,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:21,251 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:21,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:21,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:21,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:21,322 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:21,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:21,364 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:21,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410301757] [2021-06-10 14:51:21,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:21,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495296382] [2021-06-10 14:51:21,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:21,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:21,410 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:21,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 79 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) [2021-06-10 14:51:21,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:21,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,570 INFO L129 PetriNetUnfolder]: 387/837 cut-off events. [2021-06-10 14:51:21,570 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:51:21,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 837 events. 387/837 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5147 event pairs, 129 based on Foata normal form. 1/790 useless extension candidates. Maximal degree in co-relation 1428. Up to 225 conditions per place. [2021-06-10 14:51:21,575 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 27 selfloop transitions, 6 changer transitions 1/55 dead transitions. [2021-06-10 14:51:21,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 199 flow [2021-06-10 14:51:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:21,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:21,577 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:21,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:21,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:21,579 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) [2021-06-10 14:51:21,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,580 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,580 INFO L185 Difference]: Start difference. First operand has 44 places, 29 transitions, 79 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 199 flow [2021-06-10 14:51:21,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:21,582 INFO L241 Difference]: Finished difference. Result has 58 places, 34 transitions, 125 flow [2021-06-10 14:51:21,582 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=125, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2021-06-10 14:51:21,582 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2021-06-10 14:51:21,582 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 125 flow [2021-06-10 14:51:21,582 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) [2021-06-10 14:51:21,582 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,583 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:51:21,583 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]=== [2021-06-10 14:51:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1732224459, now seen corresponding path program 2 times [2021-06-10 14:51:21,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791872330] [2021-06-10 14:51:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:21,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:21,689 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:21,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:21,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:21,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:21,723 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:21,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:21,749 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:21,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:21,786 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:21,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791872330] [2021-06-10 14:51:21,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:21,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668296133] [2021-06-10 14:51:21,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:21,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:21,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:21,817 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:21,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 125 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) [2021-06-10 14:51:21,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:21,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,986 INFO L129 PetriNetUnfolder]: 470/1424 cut-off events. [2021-06-10 14:51:21,986 INFO L130 PetriNetUnfolder]: For 990/1011 co-relation queries the response was YES. [2021-06-10 14:51:21,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1424 events. 470/1424 cut-off events. For 990/1011 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12003 event pairs, 129 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 3117. Up to 324 conditions per place. [2021-06-10 14:51:21,996 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 33 selfloop transitions, 11 changer transitions 1/66 dead transitions. [2021-06-10 14:51:21,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 361 flow [2021-06-10 14:51:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:21,998 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:21,998 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:21,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:21,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,000 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) [2021-06-10 14:51:22,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,001 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,001 INFO L185 Difference]: Start difference. First operand has 58 places, 34 transitions, 125 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:22,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 361 flow [2021-06-10 14:51:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 342 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:22,005 INFO L241 Difference]: Finished difference. Result has 70 places, 41 transitions, 214 flow [2021-06-10 14:51:22,005 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2021-06-10 14:51:22,006 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2021-06-10 14:51:22,006 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 214 flow [2021-06-10 14:51:22,006 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) [2021-06-10 14:51:22,006 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:22,006 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:22,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 14:51:22,006 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]=== [2021-06-10 14:51:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash 894316305, now seen corresponding path program 3 times [2021-06-10 14:51:22,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:22,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684031715] [2021-06-10 14:51:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:22,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:22,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:22,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:22,081 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:22,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:22,092 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:22,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:22,109 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:22,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:22,142 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:22,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:22,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:22,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:22,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684031715] [2021-06-10 14:51:22,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:22,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:22,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504919188] [2021-06-10 14:51:22,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:22,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:22,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:22,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 214 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) [2021-06-10 14:51:22,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:22,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:22,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:22,385 INFO L129 PetriNetUnfolder]: 558/1955 cut-off events. [2021-06-10 14:51:22,385 INFO L130 PetriNetUnfolder]: For 3559/3607 co-relation queries the response was YES. [2021-06-10 14:51:22,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 1955 events. 558/1955 cut-off events. For 3559/3607 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19050 event pairs, 167 based on Foata normal form. 1/1905 useless extension candidates. Maximal degree in co-relation 5272. Up to 431 conditions per place. [2021-06-10 14:51:22,400 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 42 selfloop transitions, 16 changer transitions 2/81 dead transitions. [2021-06-10 14:51:22,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 604 flow [2021-06-10 14:51:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:22,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:22,402 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:22,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,403 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) [2021-06-10 14:51:22,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,406 INFO L185 Difference]: Start difference. First operand has 70 places, 41 transitions, 214 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:22,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 604 flow [2021-06-10 14:51:22,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 568 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:22,414 INFO L241 Difference]: Finished difference. Result has 82 places, 51 transitions, 362 flow [2021-06-10 14:51:22,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=362, PETRI_PLACES=82, PETRI_TRANSITIONS=51} [2021-06-10 14:51:22,415 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2021-06-10 14:51:22,415 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 51 transitions, 362 flow [2021-06-10 14:51:22,415 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) [2021-06-10 14:51:22,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:22,415 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:22,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 14:51:22,416 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]=== [2021-06-10 14:51:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2117433717, now seen corresponding path program 4 times [2021-06-10 14:51:22,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:22,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243180256] [2021-06-10 14:51:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:22,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:22,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:22,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:22,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:22,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:22,511 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:22,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:22,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:22,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:22,558 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:22,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:22,584 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:22,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243180256] [2021-06-10 14:51:22,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:22,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:22,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207958320] [2021-06-10 14:51:22,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:22,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:22,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:22,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:22,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 51 transitions, 362 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) [2021-06-10 14:51:22,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:22,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:22,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:22,903 INFO L129 PetriNetUnfolder]: 651/2859 cut-off events. [2021-06-10 14:51:22,903 INFO L130 PetriNetUnfolder]: For 8852/8953 co-relation queries the response was YES. [2021-06-10 14:51:22,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 2859 events. 651/2859 cut-off events. For 8852/8953 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 32819 event pairs, 190 based on Foata normal form. 1/2776 useless extension candidates. Maximal degree in co-relation 8510. Up to 600 conditions per place. [2021-06-10 14:51:22,927 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 63 selfloop transitions, 25 changer transitions 2/111 dead transitions. [2021-06-10 14:51:22,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 1100 flow [2021-06-10 14:51:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:22,929 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:22,929 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:22,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:22,931 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) [2021-06-10 14:51:22,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,932 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,932 INFO L185 Difference]: Start difference. First operand has 82 places, 51 transitions, 362 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:22,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 1100 flow [2021-06-10 14:51:22,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 111 transitions, 1051 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:22,947 INFO L241 Difference]: Finished difference. Result has 93 places, 72 transitions, 703 flow [2021-06-10 14:51:22,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=93, PETRI_TRANSITIONS=72} [2021-06-10 14:51:22,948 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2021-06-10 14:51:22,948 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 72 transitions, 703 flow [2021-06-10 14:51:22,948 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) [2021-06-10 14:51:22,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:22,948 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:22,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 14:51:22,949 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]=== [2021-06-10 14:51:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:22,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1670539023, now seen corresponding path program 5 times [2021-06-10 14:51:22,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:22,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142374284] [2021-06-10 14:51:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:22,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:22,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:22,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:23,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:23,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:23,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:23,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:23,030 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:51:23,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:51:23,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:23,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:23,089 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:23,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:23,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142374284] [2021-06-10 14:51:23,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:23,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:23,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501205379] [2021-06-10 14:51:23,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:23,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:23,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:23,114 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:23,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 72 transitions, 703 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) [2021-06-10 14:51:23,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:23,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:23,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:23,554 INFO L129 PetriNetUnfolder]: 760/4001 cut-off events. [2021-06-10 14:51:23,554 INFO L130 PetriNetUnfolder]: For 16785/16926 co-relation queries the response was YES. [2021-06-10 14:51:23,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 4001 events. 760/4001 cut-off events. For 16785/16926 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 51318 event pairs, 248 based on Foata normal form. 1/3893 useless extension candidates. Maximal degree in co-relation 12664. Up to 848 conditions per place. [2021-06-10 14:51:23,593 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 73 selfloop transitions, 33 changer transitions 1/128 dead transitions. [2021-06-10 14:51:23,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 1503 flow [2021-06-10 14:51:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:23,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:23,595 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:23,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:23,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:23,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:23,597 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) [2021-06-10 14:51:23,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,598 INFO L185 Difference]: Start difference. First operand has 93 places, 72 transitions, 703 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:23,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 1503 flow [2021-06-10 14:51:23,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 1473 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:23,623 INFO L241 Difference]: Finished difference. Result has 105 places, 89 transitions, 1041 flow [2021-06-10 14:51:23,623 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1041, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2021-06-10 14:51:23,623 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2021-06-10 14:51:23,623 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 1041 flow [2021-06-10 14:51:23,623 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) [2021-06-10 14:51:23,623 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:23,623 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:23,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 14:51:23,624 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]=== [2021-06-10 14:51:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1636572197, now seen corresponding path program 6 times [2021-06-10 14:51:23,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:23,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988991471] [2021-06-10 14:51:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:23,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:23,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:23,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:23,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:23,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:23,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:23,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:23,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:23,689 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:51:23,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:51:23,717 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:23,742 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:23,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:23,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988991471] [2021-06-10 14:51:23,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:23,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:23,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115862219] [2021-06-10 14:51:23,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:23,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:23,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:23,765 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:23,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 1041 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) [2021-06-10 14:51:23,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:23,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:23,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:24,264 INFO L129 PetriNetUnfolder]: 816/4465 cut-off events. [2021-06-10 14:51:24,264 INFO L130 PetriNetUnfolder]: For 26709/26971 co-relation queries the response was YES. [2021-06-10 14:51:24,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15866 conditions, 4465 events. 816/4465 cut-off events. For 26709/26971 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 59216 event pairs, 260 based on Foata normal form. 1/4368 useless extension candidates. Maximal degree in co-relation 15828. Up to 958 conditions per place. [2021-06-10 14:51:24,308 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 85 selfloop transitions, 40 changer transitions 1/147 dead transitions. [2021-06-10 14:51:24,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 147 transitions, 2056 flow [2021-06-10 14:51:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:24,310 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:24,310 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:24,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:24,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:24,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:24,311 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) [2021-06-10 14:51:24,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,312 INFO L185 Difference]: Start difference. First operand has 105 places, 89 transitions, 1041 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:24,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 147 transitions, 2056 flow [2021-06-10 14:51:24,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 147 transitions, 1943 flow, removed 44 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:24,349 INFO L241 Difference]: Finished difference. Result has 117 places, 115 transitions, 1561 flow [2021-06-10 14:51:24,349 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1561, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2021-06-10 14:51:24,350 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2021-06-10 14:51:24,350 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1561 flow [2021-06-10 14:51:24,353 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) [2021-06-10 14:51:24,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:24,353 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:24,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 14:51:24,353 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]=== [2021-06-10 14:51:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash -119957053, now seen corresponding path program 7 times [2021-06-10 14:51:24,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:24,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791589019] [2021-06-10 14:51:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:24,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:24,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:24,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:24,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:24,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:24,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:24,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:24,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:24,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:24,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:24,432 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:51:24,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:51:24,457 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:24,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:24,480 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:24,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:24,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791589019] [2021-06-10 14:51:24,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:24,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:24,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948530030] [2021-06-10 14:51:24,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:24,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:24,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:24,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:24,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:24,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 1561 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) [2021-06-10 14:51:24,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:24,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:24,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:25,147 INFO L129 PetriNetUnfolder]: 821/4986 cut-off events. [2021-06-10 14:51:25,147 INFO L130 PetriNetUnfolder]: For 38898/39375 co-relation queries the response was YES. [2021-06-10 14:51:25,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19210 conditions, 4986 events. 821/4986 cut-off events. For 38898/39375 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 68683 event pairs, 357 based on Foata normal form. 4/4854 useless extension candidates. Maximal degree in co-relation 19166. Up to 945 conditions per place. [2021-06-10 14:51:25,192 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 83 selfloop transitions, 62 changer transitions 1/167 dead transitions. [2021-06-10 14:51:25,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 167 transitions, 2540 flow [2021-06-10 14:51:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:25,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:25,194 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:25,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:25,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:25,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:25,195 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) [2021-06-10 14:51:25,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,196 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,196 INFO L185 Difference]: Start difference. First operand has 117 places, 115 transitions, 1561 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:25,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 167 transitions, 2540 flow [2021-06-10 14:51:25,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 167 transitions, 2423 flow, removed 45 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:25,261 INFO L241 Difference]: Finished difference. Result has 129 places, 131 transitions, 1963 flow [2021-06-10 14:51:25,261 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1963, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2021-06-10 14:51:25,261 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 78 predicate places. [2021-06-10 14:51:25,261 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 1963 flow [2021-06-10 14:51:25,262 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) [2021-06-10 14:51:25,262 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:25,262 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:25,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 14:51:25,262 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]=== [2021-06-10 14:51:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:25,262 INFO L82 PathProgramCache]: Analyzing trace with hash -47115529, now seen corresponding path program 8 times [2021-06-10 14:51:25,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:25,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062788277] [2021-06-10 14:51:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:25,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:25,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:25,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:25,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:25,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:25,339 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:25,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:25,354 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:25,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:25,373 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:25,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:25,397 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:25,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:25,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062788277] [2021-06-10 14:51:25,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:25,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:25,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329572979] [2021-06-10 14:51:25,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:25,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:25,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:25,420 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:25,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 1963 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) [2021-06-10 14:51:25,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:25,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:25,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:26,301 INFO L129 PetriNetUnfolder]: 815/5682 cut-off events. [2021-06-10 14:51:26,301 INFO L130 PetriNetUnfolder]: For 52541/53267 co-relation queries the response was YES. [2021-06-10 14:51:26,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22897 conditions, 5682 events. 815/5682 cut-off events. For 52541/53267 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 82279 event pairs, 350 based on Foata normal form. 6/5551 useless extension candidates. Maximal degree in co-relation 22847. Up to 1053 conditions per place. [2021-06-10 14:51:26,341 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 109 selfloop transitions, 70 changer transitions 2/202 dead transitions. [2021-06-10 14:51:26,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 202 transitions, 3393 flow [2021-06-10 14:51:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:26,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:26,343 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:26,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:26,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:26,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:26,344 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) [2021-06-10 14:51:26,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,345 INFO L185 Difference]: Start difference. First operand has 129 places, 131 transitions, 1963 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:26,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 202 transitions, 3393 flow [2021-06-10 14:51:26,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 202 transitions, 3263 flow, removed 47 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:26,427 INFO L241 Difference]: Finished difference. Result has 141 places, 153 transitions, 2503 flow [2021-06-10 14:51:26,427 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2503, PETRI_PLACES=141, PETRI_TRANSITIONS=153} [2021-06-10 14:51:26,427 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2021-06-10 14:51:26,427 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 153 transitions, 2503 flow [2021-06-10 14:51:26,428 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) [2021-06-10 14:51:26,428 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:26,428 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:26,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 14:51:26,428 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]=== [2021-06-10 14:51:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1582766679, now seen corresponding path program 9 times [2021-06-10 14:51:26,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:26,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147733085] [2021-06-10 14:51:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:26,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:26,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:26,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:26,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:26,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:26,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:26,457 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:26,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:26,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:26,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:26,482 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:26,500 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:26,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:26,522 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:26,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:26,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147733085] [2021-06-10 14:51:26,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:26,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:26,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158902946] [2021-06-10 14:51:26,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:26,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:26,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:26,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:26,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:26,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 153 transitions, 2503 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) [2021-06-10 14:51:26,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:26,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:26,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:27,576 INFO L129 PetriNetUnfolder]: 796/6672 cut-off events. [2021-06-10 14:51:27,577 INFO L130 PetriNetUnfolder]: For 71551/72513 co-relation queries the response was YES. [2021-06-10 14:51:27,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27503 conditions, 6672 events. 796/6672 cut-off events. For 71551/72513 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 102775 event pairs, 301 based on Foata normal form. 12/6469 useless extension candidates. Maximal degree in co-relation 27447. Up to 1096 conditions per place. [2021-06-10 14:51:27,619 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 140 selfloop transitions, 75 changer transitions 2/238 dead transitions. [2021-06-10 14:51:27,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 4339 flow [2021-06-10 14:51:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:27,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:27,621 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:27,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:27,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:27,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:27,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,623 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,623 INFO L185 Difference]: Start difference. First operand has 141 places, 153 transitions, 2503 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:27,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 4339 flow [2021-06-10 14:51:27,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 238 transitions, 4192 flow, removed 55 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:27,748 INFO L241 Difference]: Finished difference. Result has 152 places, 181 transitions, 3202 flow [2021-06-10 14:51:27,749 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3202, PETRI_PLACES=152, PETRI_TRANSITIONS=181} [2021-06-10 14:51:27,749 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 101 predicate places. [2021-06-10 14:51:27,749 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 181 transitions, 3202 flow [2021-06-10 14:51:27,749 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) [2021-06-10 14:51:27,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:27,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:27,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 14:51:27,749 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]=== [2021-06-10 14:51:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1395914789, now seen corresponding path program 10 times [2021-06-10 14:51:27,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:27,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757118835] [2021-06-10 14:51:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:27,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:27,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:27,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:27,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:27,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:27,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:27,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:27,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:27,794 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:27,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:27,808 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:51:27,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:51:27,836 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:27,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:27,859 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:27,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757118835] [2021-06-10 14:51:27,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:27,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:27,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122487142] [2021-06-10 14:51:27,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:27,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:27,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:27,882 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:27,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 181 transitions, 3202 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) [2021-06-10 14:51:27,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:27,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:27,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:29,020 INFO L129 PetriNetUnfolder]: 784/6842 cut-off events. [2021-06-10 14:51:29,020 INFO L130 PetriNetUnfolder]: For 86046/86887 co-relation queries the response was YES. [2021-06-10 14:51:29,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29858 conditions, 6842 events. 784/6842 cut-off events. For 86046/86887 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 106050 event pairs, 321 based on Foata normal form. 14/6664 useless extension candidates. Maximal degree in co-relation 29797. Up to 1078 conditions per place. [2021-06-10 14:51:29,067 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 122 selfloop transitions, 101 changer transitions 1/245 dead transitions. [2021-06-10 14:51:29,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 245 transitions, 4736 flow [2021-06-10 14:51:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:29,069 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:29,069 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:29,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:29,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:29,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:29,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,071 INFO L185 Difference]: Start difference. First operand has 152 places, 181 transitions, 3202 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:29,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 245 transitions, 4736 flow [2021-06-10 14:51:29,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 245 transitions, 4562 flow, removed 68 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:29,251 INFO L241 Difference]: Finished difference. Result has 163 places, 199 transitions, 3802 flow [2021-06-10 14:51:29,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3802, PETRI_PLACES=163, PETRI_TRANSITIONS=199} [2021-06-10 14:51:29,251 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 112 predicate places. [2021-06-10 14:51:29,251 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 199 transitions, 3802 flow [2021-06-10 14:51:29,251 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) [2021-06-10 14:51:29,251 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:29,251 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:29,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 14:51:29,252 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]=== [2021-06-10 14:51:29,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:29,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1387432347, now seen corresponding path program 11 times [2021-06-10 14:51:29,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:29,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338666884] [2021-06-10 14:51:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:29,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:29,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:29,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:29,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:29,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:29,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:29,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:29,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:29,295 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:29,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:29,319 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:29,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:29,337 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:29,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:29,358 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:29,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:29,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338666884] [2021-06-10 14:51:29,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:29,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:29,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407368281] [2021-06-10 14:51:29,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:29,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:29,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:29,387 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:29,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 199 transitions, 3802 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) [2021-06-10 14:51:29,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:29,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:29,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:30,496 INFO L129 PetriNetUnfolder]: 769/7025 cut-off events. [2021-06-10 14:51:30,497 INFO L130 PetriNetUnfolder]: For 103402/104932 co-relation queries the response was YES. [2021-06-10 14:51:30,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32212 conditions, 7025 events. 769/7025 cut-off events. For 103402/104932 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 109922 event pairs, 363 based on Foata normal form. 20/6846 useless extension candidates. Maximal degree in co-relation 32146. Up to 1025 conditions per place. [2021-06-10 14:51:30,631 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 144 selfloop transitions, 97 changer transitions 3/265 dead transitions. [2021-06-10 14:51:30,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 265 transitions, 5598 flow [2021-06-10 14:51:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:30,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:30,633 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:30,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:30,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:30,634 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) [2021-06-10 14:51:30,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,635 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,635 INFO L185 Difference]: Start difference. First operand has 163 places, 199 transitions, 3802 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:30,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 265 transitions, 5598 flow [2021-06-10 14:51:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 265 transitions, 5418 flow, removed 72 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:30,888 INFO L241 Difference]: Finished difference. Result has 175 places, 213 transitions, 4360 flow [2021-06-10 14:51:30,889 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=3672, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4360, PETRI_PLACES=175, PETRI_TRANSITIONS=213} [2021-06-10 14:51:30,889 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 124 predicate places. [2021-06-10 14:51:30,889 INFO L480 AbstractCegarLoop]: Abstraction has has 175 places, 213 transitions, 4360 flow [2021-06-10 14:51:30,889 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) [2021-06-10 14:51:30,889 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:30,889 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:30,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-10 14:51:30,889 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]=== [2021-06-10 14:51:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:30,890 INFO L82 PathProgramCache]: Analyzing trace with hash 282677335, now seen corresponding path program 12 times [2021-06-10 14:51:30,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:30,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626856965] [2021-06-10 14:51:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:30,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:30,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:30,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:30,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:30,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:30,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:30,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:30,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:30,936 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:30,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:30,951 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:30,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:30,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:30,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:30,999 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:30,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:31,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626856965] [2021-06-10 14:51:31,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:31,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:31,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897685929] [2021-06-10 14:51:31,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:31,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:31,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:31,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:31,023 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:31,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 213 transitions, 4360 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) [2021-06-10 14:51:31,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:31,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:31,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:31,576 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-06-10 14:51:32,333 INFO L129 PetriNetUnfolder]: 771/7315 cut-off events. [2021-06-10 14:51:32,333 INFO L130 PetriNetUnfolder]: For 124393/126127 co-relation queries the response was YES. [2021-06-10 14:51:32,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35342 conditions, 7315 events. 771/7315 cut-off events. For 124393/126127 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 115894 event pairs, 306 based on Foata normal form. 32/7113 useless extension candidates. Maximal degree in co-relation 35270. Up to 1097 conditions per place. [2021-06-10 14:51:32,384 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 131 selfloop transitions, 116 changer transitions 1/269 dead transitions. [2021-06-10 14:51:32,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 269 transitions, 6038 flow [2021-06-10 14:51:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:32,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:32,386 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:32,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:32,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:32,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:32,387 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) [2021-06-10 14:51:32,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,388 INFO L185 Difference]: Start difference. First operand has 175 places, 213 transitions, 4360 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 269 transitions, 6038 flow [2021-06-10 14:51:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 269 transitions, 5841 flow, removed 80 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:32,727 INFO L241 Difference]: Finished difference. Result has 185 places, 236 transitions, 5135 flow [2021-06-10 14:51:32,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5135, PETRI_PLACES=185, PETRI_TRANSITIONS=236} [2021-06-10 14:51:32,727 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 134 predicate places. [2021-06-10 14:51:32,728 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 236 transitions, 5135 flow [2021-06-10 14:51:32,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,728 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:32,728 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:32,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-10 14:51:32,728 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]=== [2021-06-10 14:51:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1751962849, now seen corresponding path program 13 times [2021-06-10 14:51:32,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:32,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347006789] [2021-06-10 14:51:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:32,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:32,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:32,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:32,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:32,751 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:32,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:32,758 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:32,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:32,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:32,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:32,792 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:32,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:32,814 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:32,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:32,841 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:32,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:32,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347006789] [2021-06-10 14:51:32,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:32,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:32,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912084792] [2021-06-10 14:51:32,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:32,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:32,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:32,866 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:32,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 236 transitions, 5135 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) [2021-06-10 14:51:32,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:32,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:32,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:34,065 INFO L129 PetriNetUnfolder]: 768/7356 cut-off events. [2021-06-10 14:51:34,065 INFO L130 PetriNetUnfolder]: For 132692/134783 co-relation queries the response was YES. [2021-06-10 14:51:34,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36092 conditions, 7356 events. 768/7356 cut-off events. For 132692/134783 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 116487 event pairs, 375 based on Foata normal form. 25/7147 useless extension candidates. Maximal degree in co-relation 36016. Up to 1025 conditions per place. [2021-06-10 14:51:34,134 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 162 selfloop transitions, 122 changer transitions 3/308 dead transitions. [2021-06-10 14:51:34,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 308 transitions, 7277 flow [2021-06-10 14:51:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:34,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:34,135 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:34,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:34,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:34,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:34,136 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) [2021-06-10 14:51:34,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,137 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,137 INFO L185 Difference]: Start difference. First operand has 185 places, 236 transitions, 5135 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 308 transitions, 7277 flow [2021-06-10 14:51:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 308 transitions, 6979 flow, removed 79 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:34,636 INFO L241 Difference]: Finished difference. Result has 195 places, 252 transitions, 5709 flow [2021-06-10 14:51:34,637 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5709, PETRI_PLACES=195, PETRI_TRANSITIONS=252} [2021-06-10 14:51:34,637 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2021-06-10 14:51:34,637 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 252 transitions, 5709 flow [2021-06-10 14:51:34,637 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) [2021-06-10 14:51:34,637 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:34,637 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:34,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-10 14:51:34,637 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]=== [2021-06-10 14:51:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:34,638 INFO L82 PathProgramCache]: Analyzing trace with hash -669153749, now seen corresponding path program 14 times [2021-06-10 14:51:34,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:34,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359188772] [2021-06-10 14:51:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:34,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:34,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:34,660 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:34,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:34,667 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:34,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:34,679 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:34,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:34,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:34,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:34,714 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:34,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:34,739 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:34,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:34,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359188772] [2021-06-10 14:51:34,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:34,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:34,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69663739] [2021-06-10 14:51:34,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:34,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:34,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:34,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:34,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:34,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 252 transitions, 5709 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) [2021-06-10 14:51:34,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:34,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:34,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:36,075 INFO L129 PetriNetUnfolder]: 764/7006 cut-off events. [2021-06-10 14:51:36,075 INFO L130 PetriNetUnfolder]: For 147640/149433 co-relation queries the response was YES. [2021-06-10 14:51:36,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37148 conditions, 7006 events. 764/7006 cut-off events. For 147640/149433 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 109575 event pairs, 452 based on Foata normal form. 36/6792 useless extension candidates. Maximal degree in co-relation 37067. Up to 1088 conditions per place. [2021-06-10 14:51:36,139 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 115 selfloop transitions, 158 changer transitions 5/299 dead transitions. [2021-06-10 14:51:36,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 299 transitions, 7339 flow [2021-06-10 14:51:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:36,140 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:36,140 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:36,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:36,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:36,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:36,141 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) [2021-06-10 14:51:36,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,142 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,142 INFO L185 Difference]: Start difference. First operand has 195 places, 252 transitions, 5709 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:36,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 299 transitions, 7339 flow [2021-06-10 14:51:36,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 299 transitions, 7078 flow, removed 66 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:36,689 INFO L241 Difference]: Finished difference. Result has 204 places, 261 transitions, 6262 flow [2021-06-10 14:51:36,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6262, PETRI_PLACES=204, PETRI_TRANSITIONS=261} [2021-06-10 14:51:36,690 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2021-06-10 14:51:36,690 INFO L480 AbstractCegarLoop]: Abstraction has has 204 places, 261 transitions, 6262 flow [2021-06-10 14:51:36,690 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) [2021-06-10 14:51:36,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:36,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:36,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-10 14:51:36,691 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]=== [2021-06-10 14:51:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1908607675, now seen corresponding path program 15 times [2021-06-10 14:51:36,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:36,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563247910] [2021-06-10 14:51:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:36,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:36,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:36,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:36,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:36,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:36,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:36,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:36,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:36,736 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:36,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:36,753 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:36,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:36,774 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:36,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:36,845 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:36,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:36,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563247910] [2021-06-10 14:51:36,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:36,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:36,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283551018] [2021-06-10 14:51:36,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:36,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:36,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:36,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:36,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:36,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 261 transitions, 6262 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) [2021-06-10 14:51:36,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:36,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:36,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:38,305 INFO L129 PetriNetUnfolder]: 765/7301 cut-off events. [2021-06-10 14:51:38,305 INFO L130 PetriNetUnfolder]: For 156851/158955 co-relation queries the response was YES. [2021-06-10 14:51:38,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38408 conditions, 7301 events. 765/7301 cut-off events. For 156851/158955 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 115464 event pairs, 454 based on Foata normal form. 33/7095 useless extension candidates. Maximal degree in co-relation 38323. Up to 1025 conditions per place. [2021-06-10 14:51:38,366 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 151 selfloop transitions, 134 changer transitions 3/309 dead transitions. [2021-06-10 14:51:38,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 309 transitions, 7924 flow [2021-06-10 14:51:38,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:38,368 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:38,368 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:38,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:38,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:38,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:38,369 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) [2021-06-10 14:51:38,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,370 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,370 INFO L185 Difference]: Start difference. First operand has 204 places, 261 transitions, 6262 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:38,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 309 transitions, 7924 flow [2021-06-10 14:51:38,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 309 transitions, 7647 flow, removed 73 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:38,988 INFO L241 Difference]: Finished difference. Result has 212 places, 276 transitions, 6886 flow [2021-06-10 14:51:38,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=6073, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6886, PETRI_PLACES=212, PETRI_TRANSITIONS=276} [2021-06-10 14:51:38,988 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2021-06-10 14:51:38,988 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 276 transitions, 6886 flow [2021-06-10 14:51:38,989 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) [2021-06-10 14:51:38,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:38,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:38,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-10 14:51:38,989 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]=== [2021-06-10 14:51:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1578440007, now seen corresponding path program 16 times [2021-06-10 14:51:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:38,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776610022] [2021-06-10 14:51:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:39,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:39,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:39,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:39,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:39,024 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:39,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:39,039 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:39,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:39,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:39,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:39,065 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:39,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:39,084 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:39,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:39,113 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:39,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:39,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776610022] [2021-06-10 14:51:39,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:39,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:39,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662922451] [2021-06-10 14:51:39,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:39,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:39,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:39,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:39,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 276 transitions, 6886 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) [2021-06-10 14:51:39,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:39,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:39,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:40,534 INFO L129 PetriNetUnfolder]: 761/7407 cut-off events. [2021-06-10 14:51:40,534 INFO L130 PetriNetUnfolder]: For 155561/157671 co-relation queries the response was YES. [2021-06-10 14:51:40,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38981 conditions, 7407 events. 761/7407 cut-off events. For 155561/157671 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 117819 event pairs, 373 based on Foata normal form. 42/7219 useless extension candidates. Maximal degree in co-relation 38893. Up to 1088 conditions per place. [2021-06-10 14:51:40,600 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 114 selfloop transitions, 176 changer transitions 2/313 dead transitions. [2021-06-10 14:51:40,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 313 transitions, 8290 flow [2021-06-10 14:51:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:40,601 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:40,601 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:40,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:40,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:40,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:40,602 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) [2021-06-10 14:51:40,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,603 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,603 INFO L185 Difference]: Start difference. First operand has 212 places, 276 transitions, 6886 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:40,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 313 transitions, 8290 flow [2021-06-10 14:51:41,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 313 transitions, 7966 flow, removed 57 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:41,107 INFO L241 Difference]: Finished difference. Result has 218 places, 282 transitions, 7169 flow [2021-06-10 14:51:41,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=6602, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7169, PETRI_PLACES=218, PETRI_TRANSITIONS=282} [2021-06-10 14:51:41,108 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 167 predicate places. [2021-06-10 14:51:41,108 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 282 transitions, 7169 flow [2021-06-10 14:51:41,108 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) [2021-06-10 14:51:41,108 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:41,108 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:41,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-10 14:51:41,108 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]=== [2021-06-10 14:51:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash -641338091, now seen corresponding path program 17 times [2021-06-10 14:51:41,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:41,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432415560] [2021-06-10 14:51:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:41,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:41,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:41,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:41,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:41,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:41,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:41,144 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:41,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:41,157 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:41,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:41,263 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:41,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:41,288 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:41,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:41,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432415560] [2021-06-10 14:51:41,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:41,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:41,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420463233] [2021-06-10 14:51:41,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:41,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:41,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:41,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:41,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:41,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 282 transitions, 7169 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) [2021-06-10 14:51:41,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:41,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:41,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:42,683 INFO L129 PetriNetUnfolder]: 755/7577 cut-off events. [2021-06-10 14:51:42,683 INFO L130 PetriNetUnfolder]: For 159021/161023 co-relation queries the response was YES. [2021-06-10 14:51:42,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39851 conditions, 7577 events. 755/7577 cut-off events. For 159021/161023 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 121430 event pairs, 354 based on Foata normal form. 33/7354 useless extension candidates. Maximal degree in co-relation 39761. Up to 1026 conditions per place. [2021-06-10 14:51:42,743 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 164 selfloop transitions, 149 changer transitions 3/337 dead transitions. [2021-06-10 14:51:42,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 337 transitions, 9060 flow [2021-06-10 14:51:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:42,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:42,744 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:42,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:42,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:42,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:42,745 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) [2021-06-10 14:51:42,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,746 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,746 INFO L185 Difference]: Start difference. First operand has 218 places, 282 transitions, 7169 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:42,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 337 transitions, 9060 flow [2021-06-10 14:51:43,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 337 transitions, 8633 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:43,291 INFO L241 Difference]: Finished difference. Result has 225 places, 297 transitions, 7647 flow [2021-06-10 14:51:43,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=6794, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7647, PETRI_PLACES=225, PETRI_TRANSITIONS=297} [2021-06-10 14:51:43,291 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 174 predicate places. [2021-06-10 14:51:43,291 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 297 transitions, 7647 flow [2021-06-10 14:51:43,291 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) [2021-06-10 14:51:43,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:43,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:43,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-10 14:51:43,291 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]=== [2021-06-10 14:51:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:43,292 INFO L82 PathProgramCache]: Analyzing trace with hash -904378765, now seen corresponding path program 18 times [2021-06-10 14:51:43,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:43,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472525075] [2021-06-10 14:51:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:43,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:43,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:43,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:43,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:43,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:43,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:43,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:43,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:43,326 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:43,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:43,339 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:43,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:43,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:43,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:43,377 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:43,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:43,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472525075] [2021-06-10 14:51:43,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:43,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:43,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081339732] [2021-06-10 14:51:43,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:43,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:43,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:43,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 297 transitions, 7647 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) [2021-06-10 14:51:43,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:43,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:43,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:45,009 INFO L129 PetriNetUnfolder]: 754/7554 cut-off events. [2021-06-10 14:51:45,009 INFO L130 PetriNetUnfolder]: For 162736/164738 co-relation queries the response was YES. [2021-06-10 14:51:45,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40028 conditions, 7554 events. 754/7554 cut-off events. For 162736/164738 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 120876 event pairs, 375 based on Foata normal form. 42/7353 useless extension candidates. Maximal degree in co-relation 39934. Up to 1088 conditions per place. [2021-06-10 14:51:45,068 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 110 selfloop transitions, 195 changer transitions 2/328 dead transitions. [2021-06-10 14:51:45,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 328 transitions, 8949 flow [2021-06-10 14:51:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:45,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:45,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:45,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:45,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:45,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:45,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,072 INFO L185 Difference]: Start difference. First operand has 225 places, 297 transitions, 7647 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 328 transitions, 8949 flow [2021-06-10 14:51:45,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 328 transitions, 8638 flow, removed 46 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:45,667 INFO L241 Difference]: Finished difference. Result has 232 places, 304 transitions, 8103 flow [2021-06-10 14:51:45,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=7358, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8103, PETRI_PLACES=232, PETRI_TRANSITIONS=304} [2021-06-10 14:51:45,668 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 181 predicate places. [2021-06-10 14:51:45,668 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 304 transitions, 8103 flow [2021-06-10 14:51:45,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:45,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:45,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-10 14:51:45,668 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]=== [2021-06-10 14:51:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:45,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1656486765, now seen corresponding path program 19 times [2021-06-10 14:51:45,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:45,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660306448] [2021-06-10 14:51:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:45,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:45,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:45,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:45,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:45,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:45,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:45,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:45,715 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:45,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:45,728 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:45,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:45,747 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:45,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:45,771 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:45,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:45,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660306448] [2021-06-10 14:51:45,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:45,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:45,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941443632] [2021-06-10 14:51:45,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:45,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:45,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:45,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:45,791 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:45,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 304 transitions, 8103 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) [2021-06-10 14:51:45,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:45,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:45,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:47,796 INFO L129 PetriNetUnfolder]: 783/9562 cut-off events. [2021-06-10 14:51:47,796 INFO L130 PetriNetUnfolder]: For 225034/227036 co-relation queries the response was YES. [2021-06-10 14:51:47,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52073 conditions, 9562 events. 783/9562 cut-off events. For 225034/227036 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 161467 event pairs, 209 based on Foata normal form. 1/9234 useless extension candidates. Maximal degree in co-relation 51976. Up to 1904 conditions per place. [2021-06-10 14:51:47,879 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 466 selfloop transitions, 199 changer transitions 6/692 dead transitions. [2021-06-10 14:51:47,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 692 transitions, 20810 flow [2021-06-10 14:51:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:47,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:47,880 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:47,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:47,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:47,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:47,881 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) [2021-06-10 14:51:47,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:47,882 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:47,882 INFO L185 Difference]: Start difference. First operand has 232 places, 304 transitions, 8103 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:47,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 692 transitions, 20810 flow [2021-06-10 14:51:48,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 692 transitions, 20050 flow, removed 56 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:48,884 INFO L241 Difference]: Finished difference. Result has 242 places, 474 transitions, 13933 flow [2021-06-10 14:51:48,885 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=7798, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13933, PETRI_PLACES=242, PETRI_TRANSITIONS=474} [2021-06-10 14:51:48,885 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2021-06-10 14:51:48,885 INFO L480 AbstractCegarLoop]: Abstraction has has 242 places, 474 transitions, 13933 flow [2021-06-10 14:51:48,885 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) [2021-06-10 14:51:48,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:48,885 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:48,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-10 14:51:48,885 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]=== [2021-06-10 14:51:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash 89826405, now seen corresponding path program 20 times [2021-06-10 14:51:48,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:48,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423458181] [2021-06-10 14:51:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:48,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:48,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:48,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:48,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:48,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:48,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:48,915 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:48,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:48,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:48,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:48,939 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:51:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:51:48,977 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:48,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:49,002 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:49,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:49,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423458181] [2021-06-10 14:51:49,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:49,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:49,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225753244] [2021-06-10 14:51:49,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:49,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:49,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:49,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:49,027 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:49,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 474 transitions, 13933 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) [2021-06-10 14:51:49,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:49,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:49,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:51,529 INFO L129 PetriNetUnfolder]: 781/10162 cut-off events. [2021-06-10 14:51:51,529 INFO L130 PetriNetUnfolder]: For 233844/236091 co-relation queries the response was YES. [2021-06-10 14:51:51,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53792 conditions, 10162 events. 781/10162 cut-off events. For 233844/236091 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 175096 event pairs, 497 based on Foata normal form. 42/9887 useless extension candidates. Maximal degree in co-relation 53689. Up to 1456 conditions per place. [2021-06-10 14:51:51,614 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 140 selfloop transitions, 342 changer transitions 2/505 dead transitions. [2021-06-10 14:51:51,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 505 transitions, 15594 flow [2021-06-10 14:51:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:51,615 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:51,615 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:51,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:51,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:51,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:51,616 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) [2021-06-10 14:51:51,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:51,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:51,617 INFO L185 Difference]: Start difference. First operand has 242 places, 474 transitions, 13933 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:51,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 505 transitions, 15594 flow [2021-06-10 14:51:52,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 505 transitions, 15508 flow, removed 32 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:52,783 INFO L241 Difference]: Finished difference. Result has 250 places, 483 transitions, 14904 flow [2021-06-10 14:51:52,784 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=13867, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14904, PETRI_PLACES=250, PETRI_TRANSITIONS=483} [2021-06-10 14:51:52,784 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 199 predicate places. [2021-06-10 14:51:52,784 INFO L480 AbstractCegarLoop]: Abstraction has has 250 places, 483 transitions, 14904 flow [2021-06-10 14:51:52,784 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) [2021-06-10 14:51:52,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:52,784 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:52,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-10 14:51:52,784 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]=== [2021-06-10 14:51:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash -168038235, now seen corresponding path program 21 times [2021-06-10 14:51:52,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:52,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138828446] [2021-06-10 14:51:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:52,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:52,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:52,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:52,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:52,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:52,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:52,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:52,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:52,857 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:51:52,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:51:52,879 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:52,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:52,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138828446] [2021-06-10 14:51:52,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:52,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:52,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565983525] [2021-06-10 14:51:52,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:52,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:52,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:52,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:52,902 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:52,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 483 transitions, 14904 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) [2021-06-10 14:51:52,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:52,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:52,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:55,922 INFO L129 PetriNetUnfolder]: 696/11359 cut-off events. [2021-06-10 14:51:55,922 INFO L130 PetriNetUnfolder]: For 274644/276891 co-relation queries the response was YES. [2021-06-10 14:51:56,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61238 conditions, 11359 events. 696/11359 cut-off events. For 274644/276891 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 201834 event pairs, 324 based on Foata normal form. 20/10998 useless extension candidates. Maximal degree in co-relation 61133. Up to 1797 conditions per place. [2021-06-10 14:51:56,028 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 558 selfloop transitions, 217 changer transitions 7/803 dead transitions. [2021-06-10 14:51:56,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 803 transitions, 26435 flow [2021-06-10 14:51:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:51:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:51:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:51:56,030 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:51:56,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:51:56,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:51:56,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:56,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:51:56,030 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) [2021-06-10 14:51:56,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,031 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,031 INFO L185 Difference]: Start difference. First operand has 250 places, 483 transitions, 14904 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:51:56,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 803 transitions, 26435 flow [2021-06-10 14:51:57,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 803 transitions, 25360 flow, removed 48 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:57,382 INFO L241 Difference]: Finished difference. Result has 259 places, 620 transitions, 19622 flow [2021-06-10 14:51:57,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=14220, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19622, PETRI_PLACES=259, PETRI_TRANSITIONS=620} [2021-06-10 14:51:57,383 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2021-06-10 14:51:57,383 INFO L480 AbstractCegarLoop]: Abstraction has has 259 places, 620 transitions, 19622 flow [2021-06-10 14:51:57,383 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) [2021-06-10 14:51:57,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:57,383 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:57,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-10 14:51:57,383 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]=== [2021-06-10 14:51:57,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:57,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1782512499, now seen corresponding path program 22 times [2021-06-10 14:51:57,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:57,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265148987] [2021-06-10 14:51:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:57,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:57,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:57,473 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:57,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:57,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:57,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:57,511 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:57,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:57,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:51:57,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:51:57,560 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:51:57,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:51:57,596 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:51:57,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:51:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:57,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265148987] [2021-06-10 14:51:57,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:57,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:51:57,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907329108] [2021-06-10 14:51:57,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:51:57,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:57,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:51:57,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:51:57,619 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:51:57,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 620 transitions, 19622 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) [2021-06-10 14:51:57,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:57,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:51:57,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:00,920 INFO L129 PetriNetUnfolder]: 696/11631 cut-off events. [2021-06-10 14:52:00,921 INFO L130 PetriNetUnfolder]: For 286179/288937 co-relation queries the response was YES. [2021-06-10 14:52:00,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62684 conditions, 11631 events. 696/11631 cut-off events. For 286179/288937 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 207837 event pairs, 574 based on Foata normal form. 46/11273 useless extension candidates. Maximal degree in co-relation 62573. Up to 1701 conditions per place. [2021-06-10 14:52:01,025 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 164 selfloop transitions, 464 changer transitions 3/652 dead transitions. [2021-06-10 14:52:01,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 652 transitions, 21628 flow [2021-06-10 14:52:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:01,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:01,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:01,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:01,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:01,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:01,027 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) [2021-06-10 14:52:01,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:01,028 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:01,028 INFO L185 Difference]: Start difference. First operand has 259 places, 620 transitions, 19622 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:01,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 652 transitions, 21628 flow [2021-06-10 14:52:02,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 652 transitions, 21237 flow, removed 159 selfloop flow, removed 3 redundant places. [2021-06-10 14:52:02,639 INFO L241 Difference]: Finished difference. Result has 267 places, 633 transitions, 20881 flow [2021-06-10 14:52:02,640 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=19243, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20881, PETRI_PLACES=267, PETRI_TRANSITIONS=633} [2021-06-10 14:52:02,640 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2021-06-10 14:52:02,640 INFO L480 AbstractCegarLoop]: Abstraction has has 267 places, 633 transitions, 20881 flow [2021-06-10 14:52:02,640 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) [2021-06-10 14:52:02,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:02,640 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:02,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-10 14:52:02,641 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]=== [2021-06-10 14:52:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:02,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1310206195, now seen corresponding path program 23 times [2021-06-10 14:52:02,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:02,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785422311] [2021-06-10 14:52:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:02,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:02,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:02,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:02,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:02,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:02,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:02,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:02,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:02,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:02,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:02,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:02,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:02,714 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:02,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:02,736 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:02,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:02,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785422311] [2021-06-10 14:52:02,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:02,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:02,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56992063] [2021-06-10 14:52:02,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:02,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:02,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:02,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:02,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 633 transitions, 20881 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) [2021-06-10 14:52:02,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:02,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:02,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:06,222 INFO L129 PetriNetUnfolder]: 645/11963 cut-off events. [2021-06-10 14:52:06,222 INFO L130 PetriNetUnfolder]: For 308289/311047 co-relation queries the response was YES. [2021-06-10 14:52:06,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65336 conditions, 11963 events. 645/11963 cut-off events. For 308289/311047 co-relation queries the response was YES. Maximal size of possible extension queue 1962. Compared 215973 event pairs, 485 based on Foata normal form. 36/11580 useless extension candidates. Maximal degree in co-relation 65223. Up to 1801 conditions per place. [2021-06-10 14:52:06,346 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 461 selfloop transitions, 321 changer transitions 9/812 dead transitions. [2021-06-10 14:52:06,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 812 transitions, 28373 flow [2021-06-10 14:52:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:06,347 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:06,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:06,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:06,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:06,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:06,348 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) [2021-06-10 14:52:06,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,349 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,349 INFO L185 Difference]: Start difference. First operand has 267 places, 633 transitions, 20881 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:06,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 812 transitions, 28373 flow [2021-06-10 14:52:08,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 812 transitions, 27482 flow, removed 75 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:08,200 INFO L241 Difference]: Finished difference. Result has 275 places, 710 transitions, 24086 flow [2021-06-10 14:52:08,200 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=20142, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24086, PETRI_PLACES=275, PETRI_TRANSITIONS=710} [2021-06-10 14:52:08,200 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 224 predicate places. [2021-06-10 14:52:08,201 INFO L480 AbstractCegarLoop]: Abstraction has has 275 places, 710 transitions, 24086 flow [2021-06-10 14:52:08,201 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) [2021-06-10 14:52:08,201 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:08,201 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:08,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-10 14:52:08,201 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]=== [2021-06-10 14:52:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:08,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1156136753, now seen corresponding path program 24 times [2021-06-10 14:52:08,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:08,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743664471] [2021-06-10 14:52:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:08,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:08,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:08,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:08,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:08,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:08,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:08,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:08,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:08,235 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:08,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:08,248 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:08,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:08,265 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:08,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:08,292 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:08,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:08,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743664471] [2021-06-10 14:52:08,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:08,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:08,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143540432] [2021-06-10 14:52:08,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:08,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:08,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:08,316 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:08,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 710 transitions, 24086 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) [2021-06-10 14:52:08,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:08,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:08,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:12,092 INFO L129 PetriNetUnfolder]: 644/12029 cut-off events. [2021-06-10 14:52:12,092 INFO L130 PetriNetUnfolder]: For 319599/322903 co-relation queries the response was YES. [2021-06-10 14:52:12,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66281 conditions, 12029 events. 644/12029 cut-off events. For 319599/322903 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 217535 event pairs, 588 based on Foata normal form. 50/11637 useless extension candidates. Maximal degree in co-relation 66164. Up to 1701 conditions per place. [2021-06-10 14:52:12,212 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 120 selfloop transitions, 585 changer transitions 2/728 dead transitions. [2021-06-10 14:52:12,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 728 transitions, 25863 flow [2021-06-10 14:52:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:12,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:12,214 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:12,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:12,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:12,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:12,215 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) [2021-06-10 14:52:12,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,215 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,215 INFO L185 Difference]: Start difference. First operand has 275 places, 710 transitions, 24086 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:12,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 728 transitions, 25863 flow [2021-06-10 14:52:14,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 728 transitions, 25141 flow, removed 207 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:14,166 INFO L241 Difference]: Finished difference. Result has 280 places, 712 transitions, 24632 flow [2021-06-10 14:52:14,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=23387, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=583, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24632, PETRI_PLACES=280, PETRI_TRANSITIONS=712} [2021-06-10 14:52:14,167 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 229 predicate places. [2021-06-10 14:52:14,167 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 712 transitions, 24632 flow [2021-06-10 14:52:14,168 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) [2021-06-10 14:52:14,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:14,168 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:14,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-10 14:52:14,168 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]=== [2021-06-10 14:52:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1463632403, now seen corresponding path program 25 times [2021-06-10 14:52:14,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:14,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426225387] [2021-06-10 14:52:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:14,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:14,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:14,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:14,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:14,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:14,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:14,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:14,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:14,202 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:14,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:14,216 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:14,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:14,244 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:14,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:14,277 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:14,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:14,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426225387] [2021-06-10 14:52:14,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:14,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:14,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858538724] [2021-06-10 14:52:14,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:14,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:14,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:14,314 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:14,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 712 transitions, 24632 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) [2021-06-10 14:52:14,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:14,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:14,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:17,860 INFO L129 PetriNetUnfolder]: 630/12079 cut-off events. [2021-06-10 14:52:17,860 INFO L130 PetriNetUnfolder]: For 319819/323118 co-relation queries the response was YES. [2021-06-10 14:52:17,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67012 conditions, 12079 events. 630/12079 cut-off events. For 319819/323118 co-relation queries the response was YES. Maximal size of possible extension queue 1976. Compared 218707 event pairs, 574 based on Foata normal form. 48/11685 useless extension candidates. Maximal degree in co-relation 66895. Up to 1701 conditions per place. [2021-06-10 14:52:17,977 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 255 selfloop transitions, 498 changer transitions 8/782 dead transitions. [2021-06-10 14:52:17,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 782 transitions, 28338 flow [2021-06-10 14:52:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:17,979 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:17,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:17,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:17,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:17,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:17,979 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) [2021-06-10 14:52:17,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:17,980 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:17,980 INFO L185 Difference]: Start difference. First operand has 280 places, 712 transitions, 24632 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:17,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 782 transitions, 28338 flow [2021-06-10 14:52:19,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 782 transitions, 27249 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-06-10 14:52:19,716 INFO L241 Difference]: Finished difference. Result has 286 places, 727 transitions, 25406 flow [2021-06-10 14:52:19,717 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=23587, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25406, PETRI_PLACES=286, PETRI_TRANSITIONS=727} [2021-06-10 14:52:19,717 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 235 predicate places. [2021-06-10 14:52:19,717 INFO L480 AbstractCegarLoop]: Abstraction has has 286 places, 727 transitions, 25406 flow [2021-06-10 14:52:19,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:19,717 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:19,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:19,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-10 14:52:19,717 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]=== [2021-06-10 14:52:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash 523874401, now seen corresponding path program 26 times [2021-06-10 14:52:19,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:19,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808082380] [2021-06-10 14:52:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:19,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:19,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:19,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:19,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:19,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:19,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:19,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:19,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:19,752 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:19,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:19,764 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:19,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:19,781 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:19,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:19,806 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:19,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:19,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808082380] [2021-06-10 14:52:19,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:19,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:19,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138138359] [2021-06-10 14:52:19,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:19,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:19,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:19,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:19,830 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:19,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 727 transitions, 25406 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) [2021-06-10 14:52:19,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:19,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:19,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:23,886 INFO L129 PetriNetUnfolder]: 627/12096 cut-off events. [2021-06-10 14:52:23,886 INFO L130 PetriNetUnfolder]: For 330705/334481 co-relation queries the response was YES. [2021-06-10 14:52:24,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67471 conditions, 12096 events. 627/12096 cut-off events. For 330705/334481 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 219251 event pairs, 586 based on Foata normal form. 52/11699 useless extension candidates. Maximal degree in co-relation 67351. Up to 1701 conditions per place. [2021-06-10 14:52:24,077 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 176 selfloop transitions, 544 changer transitions 2/743 dead transitions. [2021-06-10 14:52:24,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 743 transitions, 27179 flow [2021-06-10 14:52:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:24,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:24,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:24,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:24,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:24,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:24,088 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) [2021-06-10 14:52:24,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:24,088 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:24,088 INFO L185 Difference]: Start difference. First operand has 286 places, 727 transitions, 25406 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:24,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 743 transitions, 27179 flow [2021-06-10 14:52:26,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 743 transitions, 26304 flow, removed 72 selfloop flow, removed 10 redundant places. [2021-06-10 14:52:26,436 INFO L241 Difference]: Finished difference. Result has 286 places, 728 transitions, 25725 flow [2021-06-10 14:52:26,436 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=24577, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25725, PETRI_PLACES=286, PETRI_TRANSITIONS=728} [2021-06-10 14:52:26,436 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 235 predicate places. [2021-06-10 14:52:26,436 INFO L480 AbstractCegarLoop]: Abstraction has has 286 places, 728 transitions, 25725 flow [2021-06-10 14:52:26,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:26,437 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:26,437 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:26,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-10 14:52:26,437 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]=== [2021-06-10 14:52:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 192148343, now seen corresponding path program 27 times [2021-06-10 14:52:26,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:26,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335858635] [2021-06-10 14:52:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:26,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:26,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:26,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:26,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:26,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:26,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:26,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:26,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:26,481 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:26,497 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:26,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:26,517 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:26,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:26,545 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:26,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:26,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335858635] [2021-06-10 14:52:26,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:26,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:26,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322920512] [2021-06-10 14:52:26,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:26,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:26,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:26,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:26,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 728 transitions, 25725 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) [2021-06-10 14:52:26,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:26,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:26,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:30,799 INFO L129 PetriNetUnfolder]: 615/12156 cut-off events. [2021-06-10 14:52:30,800 INFO L130 PetriNetUnfolder]: For 307437/311415 co-relation queries the response was YES. [2021-06-10 14:52:30,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66326 conditions, 12156 events. 615/12156 cut-off events. For 307437/311415 co-relation queries the response was YES. Maximal size of possible extension queue 1996. Compared 220941 event pairs, 574 based on Foata normal form. 52/11757 useless extension candidates. Maximal degree in co-relation 66210. Up to 1701 conditions per place. [2021-06-10 14:52:30,951 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 245 selfloop transitions, 512 changer transitions 3/781 dead transitions. [2021-06-10 14:52:30,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 781 transitions, 28882 flow [2021-06-10 14:52:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:30,952 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:30,952 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:30,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:30,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:30,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:30,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:30,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:30,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:30,954 INFO L185 Difference]: Start difference. First operand has 286 places, 728 transitions, 25725 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:30,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 781 transitions, 28882 flow [2021-06-10 14:52:33,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 781 transitions, 27729 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-06-10 14:52:33,289 INFO L241 Difference]: Finished difference. Result has 290 places, 750 transitions, 26546 flow [2021-06-10 14:52:33,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=24598, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26546, PETRI_PLACES=290, PETRI_TRANSITIONS=750} [2021-06-10 14:52:33,290 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 239 predicate places. [2021-06-10 14:52:33,290 INFO L480 AbstractCegarLoop]: Abstraction has has 290 places, 750 transitions, 26546 flow [2021-06-10 14:52:33,290 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) [2021-06-10 14:52:33,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:33,290 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:33,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-10 14:52:33,290 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]=== [2021-06-10 14:52:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash -196191129, now seen corresponding path program 28 times [2021-06-10 14:52:33,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:33,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767234168] [2021-06-10 14:52:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:33,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:33,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:33,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:33,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:33,311 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:33,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:33,318 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:33,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:33,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:33,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:33,345 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:33,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:33,365 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:33,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:33,390 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:33,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:33,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767234168] [2021-06-10 14:52:33,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:33,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:33,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122381295] [2021-06-10 14:52:33,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:33,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:33,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:33,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:33,415 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:33,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 750 transitions, 26546 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) [2021-06-10 14:52:33,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:33,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:33,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:37,496 INFO L129 PetriNetUnfolder]: 615/12143 cut-off events. [2021-06-10 14:52:37,497 INFO L130 PetriNetUnfolder]: For 306494/310472 co-relation queries the response was YES. [2021-06-10 14:52:37,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66367 conditions, 12143 events. 615/12143 cut-off events. For 306494/310472 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 220594 event pairs, 574 based on Foata normal form. 52/11746 useless extension candidates. Maximal degree in co-relation 66250. Up to 1701 conditions per place. [2021-06-10 14:52:37,624 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 149 selfloop transitions, 594 changer transitions 2/766 dead transitions. [2021-06-10 14:52:37,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 766 transitions, 28358 flow [2021-06-10 14:52:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:37,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:37,655 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:37,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:37,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:37,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:37,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,656 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,656 INFO L185 Difference]: Start difference. First operand has 290 places, 750 transitions, 26546 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:37,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 766 transitions, 28358 flow [2021-06-10 14:52:39,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 766 transitions, 27256 flow, removed 70 selfloop flow, removed 7 redundant places. [2021-06-10 14:52:39,626 INFO L241 Difference]: Finished difference. Result has 293 places, 751 transitions, 26790 flow [2021-06-10 14:52:39,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25460, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26790, PETRI_PLACES=293, PETRI_TRANSITIONS=751} [2021-06-10 14:52:39,626 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 242 predicate places. [2021-06-10 14:52:39,626 INFO L480 AbstractCegarLoop]: Abstraction has has 293 places, 751 transitions, 26790 flow [2021-06-10 14:52:39,627 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) [2021-06-10 14:52:39,627 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:39,627 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:39,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-10 14:52:39,627 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]=== [2021-06-10 14:52:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:39,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1540916827, now seen corresponding path program 29 times [2021-06-10 14:52:39,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:39,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152726208] [2021-06-10 14:52:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:39,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:39,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:39,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:39,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:39,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:39,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:39,651 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:39,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:39,661 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:39,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:39,674 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:39,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:39,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:39,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:39,719 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:39,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:39,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152726208] [2021-06-10 14:52:39,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:39,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:39,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761747379] [2021-06-10 14:52:39,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:39,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:39,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:39,742 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:39,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 751 transitions, 26790 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) [2021-06-10 14:52:39,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:39,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:39,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:43,669 INFO L129 PetriNetUnfolder]: 615/12135 cut-off events. [2021-06-10 14:52:43,669 INFO L130 PetriNetUnfolder]: For 307751/311729 co-relation queries the response was YES. [2021-06-10 14:52:43,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66500 conditions, 12135 events. 615/12135 cut-off events. For 307751/311729 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 220566 event pairs, 574 based on Foata normal form. 52/11739 useless extension candidates. Maximal degree in co-relation 66383. Up to 1701 conditions per place. [2021-06-10 14:52:43,805 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 148 selfloop transitions, 593 changer transitions 2/764 dead transitions. [2021-06-10 14:52:43,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 764 transitions, 28505 flow [2021-06-10 14:52:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:43,807 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:43,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:43,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:43,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:43,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:43,807 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) [2021-06-10 14:52:43,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,808 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,808 INFO L185 Difference]: Start difference. First operand has 293 places, 751 transitions, 26790 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:43,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 764 transitions, 28505 flow [2021-06-10 14:52:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 764 transitions, 27389 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-06-10 14:52:45,941 INFO L241 Difference]: Finished difference. Result has 295 places, 753 transitions, 26941 flow [2021-06-10 14:52:45,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25684, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=590, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26941, PETRI_PLACES=295, PETRI_TRANSITIONS=753} [2021-06-10 14:52:45,942 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 244 predicate places. [2021-06-10 14:52:45,942 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 753 transitions, 26941 flow [2021-06-10 14:52:45,942 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) [2021-06-10 14:52:45,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:45,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:45,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-10 14:52:45,942 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]=== [2021-06-10 14:52:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1249153875, now seen corresponding path program 30 times [2021-06-10 14:52:45,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:45,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198966959] [2021-06-10 14:52:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:45,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:45,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:45,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:45,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:45,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:45,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:45,967 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:45,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:45,977 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:45,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:45,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:45,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:46,014 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:52:46,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:52:46,037 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:46,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:46,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198966959] [2021-06-10 14:52:46,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:46,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:46,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776925568] [2021-06-10 14:52:46,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:46,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:46,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:46,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:46,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 753 transitions, 26941 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) [2021-06-10 14:52:46,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:46,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:46,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:49,880 INFO L129 PetriNetUnfolder]: 615/12127 cut-off events. [2021-06-10 14:52:49,880 INFO L130 PetriNetUnfolder]: For 306733/310716 co-relation queries the response was YES. [2021-06-10 14:52:50,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66554 conditions, 12127 events. 615/12127 cut-off events. For 306733/310716 co-relation queries the response was YES. Maximal size of possible extension queue 1996. Compared 220399 event pairs, 574 based on Foata normal form. 54/11735 useless extension candidates. Maximal degree in co-relation 66438. Up to 1701 conditions per place. [2021-06-10 14:52:50,036 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 142 selfloop transitions, 597 changer transitions 3/763 dead transitions. [2021-06-10 14:52:50,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 763 transitions, 28561 flow [2021-06-10 14:52:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:52:50,037 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:52:50,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:52:50,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:52:50,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:50,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:52:50,038 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) [2021-06-10 14:52:50,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:50,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:50,038 INFO L185 Difference]: Start difference. First operand has 295 places, 753 transitions, 26941 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:52:50,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 763 transitions, 28561 flow [2021-06-10 14:52:52,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 763 transitions, 27374 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:52:52,258 INFO L241 Difference]: Finished difference. Result has 298 places, 751 transitions, 26898 flow [2021-06-10 14:52:52,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25765, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26898, PETRI_PLACES=298, PETRI_TRANSITIONS=751} [2021-06-10 14:52:52,259 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 247 predicate places. [2021-06-10 14:52:52,259 INFO L480 AbstractCegarLoop]: Abstraction has has 298 places, 751 transitions, 26898 flow [2021-06-10 14:52:52,260 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) [2021-06-10 14:52:52,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:52,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:52,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-10 14:52:52,260 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]=== [2021-06-10 14:52:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:52,260 INFO L82 PathProgramCache]: Analyzing trace with hash 168990493, now seen corresponding path program 31 times [2021-06-10 14:52:52,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:52,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66848923] [2021-06-10 14:52:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:52,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:52,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:52,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:52,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:52,361 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:52,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:52,369 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:52,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:52,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:52,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:52,397 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:52,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:52,418 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:52:52,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:52:52,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:52,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:52,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66848923] [2021-06-10 14:52:52,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:52,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:52,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124632212] [2021-06-10 14:52:52,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:52,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:52,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:52,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:52,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:52,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 751 transitions, 26898 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) [2021-06-10 14:52:52,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:52,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:52,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:56,266 INFO L129 PetriNetUnfolder]: 615/12117 cut-off events. [2021-06-10 14:52:56,267 INFO L130 PetriNetUnfolder]: For 306490/310473 co-relation queries the response was YES. [2021-06-10 14:52:56,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66519 conditions, 12117 events. 615/12117 cut-off events. For 306490/310473 co-relation queries the response was YES. Maximal size of possible extension queue 1995. Compared 220171 event pairs, 574 based on Foata normal form. 54/11726 useless extension candidates. Maximal degree in co-relation 66402. Up to 1701 conditions per place. [2021-06-10 14:52:56,414 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 129 selfloop transitions, 606 changer transitions 4/760 dead transitions. [2021-06-10 14:52:56,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 760 transitions, 28503 flow [2021-06-10 14:52:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:52:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:52:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 673 transitions. [2021-06-10 14:52:56,416 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9347222222222222 [2021-06-10 14:52:56,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 673 transitions. [2021-06-10 14:52:56,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 673 transitions. [2021-06-10 14:52:56,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:56,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 673 transitions. [2021-06-10 14:52:56,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.77777777777777) internal successors, (673), 9 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,418 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,418 INFO L185 Difference]: Start difference. First operand has 298 places, 751 transitions, 26898 flow. Second operand 9 states and 673 transitions. [2021-06-10 14:52:56,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 760 transitions, 28503 flow [2021-06-10 14:52:58,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 760 transitions, 27301 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-06-10 14:52:58,404 INFO L241 Difference]: Finished difference. Result has 300 places, 748 transitions, 26822 flow [2021-06-10 14:52:58,404 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25705, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26822, PETRI_PLACES=300, PETRI_TRANSITIONS=748} [2021-06-10 14:52:58,405 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 249 predicate places. [2021-06-10 14:52:58,405 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 748 transitions, 26822 flow [2021-06-10 14:52:58,405 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) [2021-06-10 14:52:58,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:58,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:58,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-10 14:52:58,405 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]=== [2021-06-10 14:52:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:58,405 INFO L82 PathProgramCache]: Analyzing trace with hash -124296357, now seen corresponding path program 32 times [2021-06-10 14:52:58,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:58,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954434097] [2021-06-10 14:52:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:58,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:58,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:58,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:58,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:58,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:52:58,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:52:58,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:52:58,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:52:58,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:58,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:58,451 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:58,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:58,473 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:52:58,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:52:58,497 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:52:58,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:52:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:58,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954434097] [2021-06-10 14:52:58,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:58,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:52:58,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117816054] [2021-06-10 14:52:58,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:52:58,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:58,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:52:58,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:52:58,525 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:52:58,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 748 transitions, 26822 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) [2021-06-10 14:52:58,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:58,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:52:58,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:02,303 INFO L129 PetriNetUnfolder]: 615/12102 cut-off events. [2021-06-10 14:53:02,304 INFO L130 PetriNetUnfolder]: For 306161/310144 co-relation queries the response was YES. [2021-06-10 14:53:02,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66424 conditions, 12102 events. 615/12102 cut-off events. For 306161/310144 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 219823 event pairs, 574 based on Foata normal form. 54/11712 useless extension candidates. Maximal degree in co-relation 66307. Up to 1701 conditions per place. [2021-06-10 14:53:02,444 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 217 selfloop transitions, 524 changer transitions 2/764 dead transitions. [2021-06-10 14:53:02,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 764 transitions, 28625 flow [2021-06-10 14:53:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:02,445 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:02,445 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:02,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:02,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:02,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:02,446 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) [2021-06-10 14:53:02,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,447 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,447 INFO L185 Difference]: Start difference. First operand has 300 places, 748 transitions, 26822 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:02,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 764 transitions, 28625 flow [2021-06-10 14:53:04,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 764 transitions, 27399 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-06-10 14:53:04,653 INFO L241 Difference]: Finished difference. Result has 302 places, 753 transitions, 26868 flow [2021-06-10 14:53:04,654 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25606, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26868, PETRI_PLACES=302, PETRI_TRANSITIONS=753} [2021-06-10 14:53:04,654 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 251 predicate places. [2021-06-10 14:53:04,654 INFO L480 AbstractCegarLoop]: Abstraction has has 302 places, 753 transitions, 26868 flow [2021-06-10 14:53:04,654 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) [2021-06-10 14:53:04,654 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:04,655 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:04,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-10 14:53:04,655 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]=== [2021-06-10 14:53:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:04,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1098121723, now seen corresponding path program 33 times [2021-06-10 14:53:04,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:04,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231437617] [2021-06-10 14:53:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:04,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:04,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:04,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:04,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:04,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:04,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:04,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:04,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:04,692 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:04,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:04,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:04,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:04,723 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:04,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:04,746 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:04,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:04,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231437617] [2021-06-10 14:53:04,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:04,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:04,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521036316] [2021-06-10 14:53:04,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:04,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:04,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:04,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:04,769 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:04,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 753 transitions, 26868 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) [2021-06-10 14:53:04,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:04,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:04,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:08,619 INFO L129 PetriNetUnfolder]: 615/12093 cut-off events. [2021-06-10 14:53:08,619 INFO L130 PetriNetUnfolder]: For 308368/312351 co-relation queries the response was YES. [2021-06-10 14:53:08,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 12093 events. 615/12093 cut-off events. For 308368/312351 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 219531 event pairs, 574 based on Foata normal form. 54/11704 useless extension candidates. Maximal degree in co-relation 66378. Up to 1701 conditions per place. [2021-06-10 14:53:08,753 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 215 selfloop transitions, 524 changer transitions 2/762 dead transitions. [2021-06-10 14:53:08,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 762 transitions, 28450 flow [2021-06-10 14:53:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:08,754 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:08,754 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:08,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:08,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:08,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:08,755 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) [2021-06-10 14:53:08,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:08,755 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:08,755 INFO L185 Difference]: Start difference. First operand has 302 places, 753 transitions, 26868 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:08,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 762 transitions, 28450 flow [2021-06-10 14:53:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 762 transitions, 27449 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:10,891 INFO L241 Difference]: Finished difference. Result has 305 places, 751 transitions, 26849 flow [2021-06-10 14:53:10,892 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25877, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26849, PETRI_PLACES=305, PETRI_TRANSITIONS=751} [2021-06-10 14:53:10,892 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 254 predicate places. [2021-06-10 14:53:10,892 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 751 transitions, 26849 flow [2021-06-10 14:53:10,892 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) [2021-06-10 14:53:10,892 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:10,892 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:10,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-10 14:53:10,892 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]=== [2021-06-10 14:53:10,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:10,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2048159377, now seen corresponding path program 34 times [2021-06-10 14:53:10,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:10,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087466432] [2021-06-10 14:53:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:10,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:10,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:10,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:10,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:10,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:10,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:10,917 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:10,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:10,926 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:10,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:10,940 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:10,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:10,959 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:53:10,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:53:10,983 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:10,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:11,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087466432] [2021-06-10 14:53:11,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:11,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:11,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756042583] [2021-06-10 14:53:11,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:11,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:11,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:11,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 751 transitions, 26849 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) [2021-06-10 14:53:11,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:11,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:11,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:14,772 INFO L129 PetriNetUnfolder]: 615/12084 cut-off events. [2021-06-10 14:53:14,772 INFO L130 PetriNetUnfolder]: For 308167/312150 co-relation queries the response was YES. [2021-06-10 14:53:14,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66584 conditions, 12084 events. 615/12084 cut-off events. For 308167/312150 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 219360 event pairs, 574 based on Foata normal form. 54/11696 useless extension candidates. Maximal degree in co-relation 66466. Up to 1701 conditions per place. [2021-06-10 14:53:14,888 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 194 selfloop transitions, 542 changer transitions 3/760 dead transitions. [2021-06-10 14:53:14,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 760 transitions, 28427 flow [2021-06-10 14:53:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:14,889 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:14,889 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:14,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:14,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:14,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:14,890 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) [2021-06-10 14:53:14,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:14,891 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:14,891 INFO L185 Difference]: Start difference. First operand has 305 places, 751 transitions, 26849 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:14,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 760 transitions, 28427 flow [2021-06-10 14:53:16,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 760 transitions, 27372 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-10 14:53:16,821 INFO L241 Difference]: Finished difference. Result has 306 places, 748 transitions, 26774 flow [2021-06-10 14:53:16,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25804, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26774, PETRI_PLACES=306, PETRI_TRANSITIONS=748} [2021-06-10 14:53:16,822 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2021-06-10 14:53:16,822 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 748 transitions, 26774 flow [2021-06-10 14:53:16,822 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) [2021-06-10 14:53:16,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:16,822 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:16,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-10 14:53:16,822 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]=== [2021-06-10 14:53:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:16,823 INFO L82 PathProgramCache]: Analyzing trace with hash -893575517, now seen corresponding path program 35 times [2021-06-10 14:53:16,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:16,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612675796] [2021-06-10 14:53:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:16,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:16,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:16,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:16,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:16,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:16,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:16,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:16,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:16,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:16,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:53:16,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:53:16,897 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:16,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:16,919 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:16,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:16,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612675796] [2021-06-10 14:53:16,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:16,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:16,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143333352] [2021-06-10 14:53:16,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:16,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:16,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:16,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:16,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:16,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 748 transitions, 26774 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) [2021-06-10 14:53:16,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:16,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:16,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:20,718 INFO L129 PetriNetUnfolder]: 615/12071 cut-off events. [2021-06-10 14:53:20,718 INFO L130 PetriNetUnfolder]: For 307654/311637 co-relation queries the response was YES. [2021-06-10 14:53:20,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66517 conditions, 12071 events. 615/12071 cut-off events. For 307654/311637 co-relation queries the response was YES. Maximal size of possible extension queue 1988. Compared 219130 event pairs, 574 based on Foata normal form. 54/11684 useless extension candidates. Maximal degree in co-relation 66400. Up to 1701 conditions per place. [2021-06-10 14:53:20,854 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 209 selfloop transitions, 526 changer transitions 2/758 dead transitions. [2021-06-10 14:53:20,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 758 transitions, 28381 flow [2021-06-10 14:53:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:20,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:20,855 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:20,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:20,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:20,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:20,856 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) [2021-06-10 14:53:20,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:20,857 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:20,857 INFO L185 Difference]: Start difference. First operand has 306 places, 748 transitions, 26774 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:20,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 758 transitions, 28381 flow [2021-06-10 14:53:22,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 758 transitions, 27297 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-06-10 14:53:22,973 INFO L241 Difference]: Finished difference. Result has 307 places, 747 transitions, 26724 flow [2021-06-10 14:53:22,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25702, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=525, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26724, PETRI_PLACES=307, PETRI_TRANSITIONS=747} [2021-06-10 14:53:22,974 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 256 predicate places. [2021-06-10 14:53:22,974 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 747 transitions, 26724 flow [2021-06-10 14:53:22,974 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) [2021-06-10 14:53:22,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:22,974 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:22,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-10 14:53:22,974 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]=== [2021-06-10 14:53:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:22,975 INFO L82 PathProgramCache]: Analyzing trace with hash 827302671, now seen corresponding path program 36 times [2021-06-10 14:53:22,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210349761] [2021-06-10 14:53:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:22,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:22,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:22,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:22,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:22,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:22,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:23,003 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:23,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:23,016 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:23,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:23,028 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:53:23,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:53:23,054 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:23,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:23,076 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:23,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:23,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210349761] [2021-06-10 14:53:23,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:23,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:23,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504126595] [2021-06-10 14:53:23,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:23,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:23,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:23,098 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:23,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 747 transitions, 26724 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) [2021-06-10 14:53:23,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:23,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:23,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:26,884 INFO L129 PetriNetUnfolder]: 615/12060 cut-off events. [2021-06-10 14:53:26,884 INFO L130 PetriNetUnfolder]: For 307016/310994 co-relation queries the response was YES. [2021-06-10 14:53:26,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66454 conditions, 12060 events. 615/12060 cut-off events. For 307016/310994 co-relation queries the response was YES. Maximal size of possible extension queue 1980. Compared 218902 event pairs, 574 based on Foata normal form. 52/11671 useless extension candidates. Maximal degree in co-relation 66337. Up to 1701 conditions per place. [2021-06-10 14:53:27,028 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 213 selfloop transitions, 520 changer transitions 2/756 dead transitions. [2021-06-10 14:53:27,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 756 transitions, 28294 flow [2021-06-10 14:53:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:27,030 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:27,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:27,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:27,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:27,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:27,031 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) [2021-06-10 14:53:27,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,032 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,032 INFO L185 Difference]: Start difference. First operand has 307 places, 747 transitions, 26724 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 756 transitions, 28294 flow [2021-06-10 14:53:29,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 756 transitions, 27646 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:29,207 INFO L241 Difference]: Finished difference. Result has 310 places, 745 transitions, 27051 flow [2021-06-10 14:53:29,207 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26086, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27051, PETRI_PLACES=310, PETRI_TRANSITIONS=745} [2021-06-10 14:53:29,207 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 259 predicate places. [2021-06-10 14:53:29,207 INFO L480 AbstractCegarLoop]: Abstraction has has 310 places, 745 transitions, 27051 flow [2021-06-10 14:53:29,207 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) [2021-06-10 14:53:29,207 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:29,207 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:29,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-10 14:53:29,208 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]=== [2021-06-10 14:53:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:29,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1257408627, now seen corresponding path program 37 times [2021-06-10 14:53:29,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:29,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180714306] [2021-06-10 14:53:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:29,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:29,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:29,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:29,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:29,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:29,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:29,230 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:29,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:29,241 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:29,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:29,254 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:29,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:29,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:29,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:29,295 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:29,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:29,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180714306] [2021-06-10 14:53:29,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:29,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:29,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494113358] [2021-06-10 14:53:29,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:29,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:29,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:29,318 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:29,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 745 transitions, 27051 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) [2021-06-10 14:53:29,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:29,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:29,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:33,349 INFO L129 PetriNetUnfolder]: 615/12049 cut-off events. [2021-06-10 14:53:33,349 INFO L130 PetriNetUnfolder]: For 309926/313904 co-relation queries the response was YES. [2021-06-10 14:53:33,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66820 conditions, 12049 events. 615/12049 cut-off events. For 309926/313904 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 218558 event pairs, 574 based on Foata normal form. 52/11661 useless extension candidates. Maximal degree in co-relation 66703. Up to 1701 conditions per place. [2021-06-10 14:53:33,447 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 202 selfloop transitions, 529 changer transitions 2/754 dead transitions. [2021-06-10 14:53:33,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 754 transitions, 28617 flow [2021-06-10 14:53:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:33,448 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:33,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:33,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:33,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:33,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:33,449 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) [2021-06-10 14:53:33,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,449 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,449 INFO L185 Difference]: Start difference. First operand has 310 places, 745 transitions, 27051 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:33,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 754 transitions, 28617 flow [2021-06-10 14:53:35,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 754 transitions, 27576 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-06-10 14:53:35,319 INFO L241 Difference]: Finished difference. Result has 311 places, 743 transitions, 26995 flow [2021-06-10 14:53:35,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26020, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=529, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26995, PETRI_PLACES=311, PETRI_TRANSITIONS=743} [2021-06-10 14:53:35,320 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 260 predicate places. [2021-06-10 14:53:35,320 INFO L480 AbstractCegarLoop]: Abstraction has has 311 places, 743 transitions, 26995 flow [2021-06-10 14:53:35,320 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) [2021-06-10 14:53:35,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:35,321 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:35,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-10 14:53:35,321 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]=== [2021-06-10 14:53:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2033707681, now seen corresponding path program 38 times [2021-06-10 14:53:35,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:35,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679427212] [2021-06-10 14:53:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:35,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:35,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:35,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:35,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:35,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:35,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:35,348 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:35,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:35,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:35,382 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:35,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:35,402 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:35,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:35,430 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:35,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:35,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679427212] [2021-06-10 14:53:35,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:35,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:35,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929367123] [2021-06-10 14:53:35,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:35,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:35,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:35,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 743 transitions, 26995 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) [2021-06-10 14:53:35,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:35,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:35,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:39,211 INFO L129 PetriNetUnfolder]: 615/12038 cut-off events. [2021-06-10 14:53:39,211 INFO L130 PetriNetUnfolder]: For 309268/313251 co-relation queries the response was YES. [2021-06-10 14:53:39,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66777 conditions, 12038 events. 615/12038 cut-off events. For 309268/313251 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 218356 event pairs, 574 based on Foata normal form. 54/11654 useless extension candidates. Maximal degree in co-relation 66661. Up to 1701 conditions per place. [2021-06-10 14:53:39,421 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 225 selfloop transitions, 504 changer transitions 2/752 dead transitions. [2021-06-10 14:53:39,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 752 transitions, 28557 flow [2021-06-10 14:53:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:39,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:39,422 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:39,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:39,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:39,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:39,423 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) [2021-06-10 14:53:39,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:39,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:39,424 INFO L185 Difference]: Start difference. First operand has 311 places, 743 transitions, 26995 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 752 transitions, 28557 flow [2021-06-10 14:53:41,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 752 transitions, 27520 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:41,280 INFO L241 Difference]: Finished difference. Result has 313 places, 741 transitions, 26896 flow [2021-06-10 14:53:41,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25968, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26896, PETRI_PLACES=313, PETRI_TRANSITIONS=741} [2021-06-10 14:53:41,281 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 262 predicate places. [2021-06-10 14:53:41,281 INFO L480 AbstractCegarLoop]: Abstraction has has 313 places, 741 transitions, 26896 flow [2021-06-10 14:53:41,281 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) [2021-06-10 14:53:41,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:41,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:41,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-10 14:53:41,281 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]=== [2021-06-10 14:53:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash -445664607, now seen corresponding path program 39 times [2021-06-10 14:53:41,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:41,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478357805] [2021-06-10 14:53:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:41,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:41,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:41,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:41,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:41,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:41,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:41,308 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:41,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:41,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:41,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:41,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:41,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:41,351 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:41,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:41,371 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:41,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:41,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478357805] [2021-06-10 14:53:41,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:41,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:41,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102864283] [2021-06-10 14:53:41,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:41,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:41,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:41,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:41,397 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:41,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 741 transitions, 26896 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) [2021-06-10 14:53:41,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:41,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:41,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:45,238 INFO L129 PetriNetUnfolder]: 615/12029 cut-off events. [2021-06-10 14:53:45,238 INFO L130 PetriNetUnfolder]: For 308987/312970 co-relation queries the response was YES. [2021-06-10 14:53:45,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66745 conditions, 12029 events. 615/12029 cut-off events. For 308987/312970 co-relation queries the response was YES. Maximal size of possible extension queue 1980. Compared 218148 event pairs, 574 based on Foata normal form. 54/11646 useless extension candidates. Maximal degree in co-relation 66629. Up to 1701 conditions per place. [2021-06-10 14:53:45,336 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 235 selfloop transitions, 505 changer transitions 2/763 dead transitions. [2021-06-10 14:53:45,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 763 transitions, 28936 flow [2021-06-10 14:53:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:45,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:45,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:45,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:45,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:45,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:45,338 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) [2021-06-10 14:53:45,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,338 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,338 INFO L185 Difference]: Start difference. First operand has 313 places, 741 transitions, 26896 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:45,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 763 transitions, 28936 flow [2021-06-10 14:53:47,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 763 transitions, 27894 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:47,335 INFO L241 Difference]: Finished difference. Result has 316 places, 752 transitions, 27303 flow [2021-06-10 14:53:47,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=25890, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27303, PETRI_PLACES=316, PETRI_TRANSITIONS=752} [2021-06-10 14:53:47,335 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 265 predicate places. [2021-06-10 14:53:47,335 INFO L480 AbstractCegarLoop]: Abstraction has has 316 places, 752 transitions, 27303 flow [2021-06-10 14:53:47,335 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) [2021-06-10 14:53:47,335 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:47,335 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:47,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-10 14:53:47,336 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]=== [2021-06-10 14:53:47,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash 195729699, now seen corresponding path program 40 times [2021-06-10 14:53:47,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:47,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361084761] [2021-06-10 14:53:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:47,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:47,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:47,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:47,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:47,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:47,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:47,399 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:47,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:47,409 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:47,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:47,428 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:47,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:47,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:47,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:47,468 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:47,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:47,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361084761] [2021-06-10 14:53:47,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:47,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:47,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996197359] [2021-06-10 14:53:47,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:47,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:47,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:47,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:47,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:47,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 752 transitions, 27303 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) [2021-06-10 14:53:47,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:47,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:47,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:51,252 INFO L129 PetriNetUnfolder]: 615/12020 cut-off events. [2021-06-10 14:53:51,252 INFO L130 PetriNetUnfolder]: For 310656/314231 co-relation queries the response was YES. [2021-06-10 14:53:51,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66801 conditions, 12020 events. 615/12020 cut-off events. For 310656/314231 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 217966 event pairs, 574 based on Foata normal form. 54/11638 useless extension candidates. Maximal degree in co-relation 66684. Up to 1701 conditions per place. [2021-06-10 14:53:51,362 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 234 selfloop transitions, 504 changer transitions 2/761 dead transitions. [2021-06-10 14:53:51,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 761 transitions, 28883 flow [2021-06-10 14:53:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:51,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:51,363 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:51,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:51,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:51,364 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) [2021-06-10 14:53:51,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:51,364 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:51,364 INFO L185 Difference]: Start difference. First operand has 316 places, 752 transitions, 27303 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:51,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 761 transitions, 28883 flow [2021-06-10 14:53:53,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 761 transitions, 27910 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:53,316 INFO L241 Difference]: Finished difference. Result has 319 places, 750 transitions, 27265 flow [2021-06-10 14:53:53,317 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26340, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27265, PETRI_PLACES=319, PETRI_TRANSITIONS=750} [2021-06-10 14:53:53,317 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 268 predicate places. [2021-06-10 14:53:53,317 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 750 transitions, 27265 flow [2021-06-10 14:53:53,317 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) [2021-06-10 14:53:53,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:53,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:53,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-10 14:53:53,317 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]=== [2021-06-10 14:53:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:53,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1009370577, now seen corresponding path program 41 times [2021-06-10 14:53:53,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:53,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448963112] [2021-06-10 14:53:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:53,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:53,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:53,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:53,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:53,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:53,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:53,339 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:53,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:53,349 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:53,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:53,363 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:53,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:53,381 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:53,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:53,464 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:53,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:53,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448963112] [2021-06-10 14:53:53,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:53,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:53,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129555273] [2021-06-10 14:53:53,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:53,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:53,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:53,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:53,486 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:53,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 750 transitions, 27265 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) [2021-06-10 14:53:53,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:53,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:53,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:57,353 INFO L129 PetriNetUnfolder]: 615/12011 cut-off events. [2021-06-10 14:53:57,353 INFO L130 PetriNetUnfolder]: For 310368/313943 co-relation queries the response was YES. [2021-06-10 14:53:57,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66865 conditions, 12011 events. 615/12011 cut-off events. For 310368/313943 co-relation queries the response was YES. Maximal size of possible extension queue 1976. Compared 217907 event pairs, 574 based on Foata normal form. 54/11630 useless extension candidates. Maximal degree in co-relation 66748. Up to 1701 conditions per place. [2021-06-10 14:53:57,617 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 239 selfloop transitions, 497 changer transitions 2/759 dead transitions. [2021-06-10 14:53:57,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 759 transitions, 28841 flow [2021-06-10 14:53:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:53:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:53:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:53:57,618 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:53:57,618 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:53:57,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:53:57,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:57,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:53:57,619 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) [2021-06-10 14:53:57,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:57,619 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:57,620 INFO L185 Difference]: Start difference. First operand has 319 places, 750 transitions, 27265 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:53:57,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 759 transitions, 28841 flow [2021-06-10 14:53:59,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 759 transitions, 27840 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:59,477 INFO L241 Difference]: Finished difference. Result has 321 places, 748 transitions, 27184 flow [2021-06-10 14:53:59,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26274, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27184, PETRI_PLACES=321, PETRI_TRANSITIONS=748} [2021-06-10 14:53:59,477 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 270 predicate places. [2021-06-10 14:53:59,477 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 748 transitions, 27184 flow [2021-06-10 14:53:59,477 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) [2021-06-10 14:53:59,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:59,478 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:59,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-10 14:53:59,478 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]=== [2021-06-10 14:53:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:59,478 INFO L82 PathProgramCache]: Analyzing trace with hash -452642289, now seen corresponding path program 42 times [2021-06-10 14:53:59,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:59,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226464814] [2021-06-10 14:53:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:59,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:59,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:59,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:59,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:59,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:59,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:59,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:59,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:59,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:59,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:59,529 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:59,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:59,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:53:59,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:53:59,573 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:53:59,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:53:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:59,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226464814] [2021-06-10 14:53:59,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:59,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:53:59,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580377511] [2021-06-10 14:53:59,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:53:59,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:59,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:53:59,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:53:59,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:53:59,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 748 transitions, 27184 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) [2021-06-10 14:53:59,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:59,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:53:59,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:03,462 INFO L129 PetriNetUnfolder]: 615/12002 cut-off events. [2021-06-10 14:54:03,462 INFO L130 PetriNetUnfolder]: For 309991/313561 co-relation queries the response was YES. [2021-06-10 14:54:03,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66829 conditions, 12002 events. 615/12002 cut-off events. For 309991/313561 co-relation queries the response was YES. Maximal size of possible extension queue 1968. Compared 217732 event pairs, 574 based on Foata normal form. 52/11619 useless extension candidates. Maximal degree in co-relation 66712. Up to 1701 conditions per place. [2021-06-10 14:54:03,580 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 228 selfloop transitions, 504 changer transitions 4/757 dead transitions. [2021-06-10 14:54:03,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 757 transitions, 28756 flow [2021-06-10 14:54:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:03,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:03,581 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:03,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:03,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:03,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:03,582 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) [2021-06-10 14:54:03,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:03,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:03,583 INFO L185 Difference]: Start difference. First operand has 321 places, 748 transitions, 27184 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:03,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 757 transitions, 28756 flow [2021-06-10 14:54:05,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 757 transitions, 27763 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-10 14:54:05,530 INFO L241 Difference]: Finished difference. Result has 323 places, 744 transitions, 27034 flow [2021-06-10 14:54:05,531 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26201, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27034, PETRI_PLACES=323, PETRI_TRANSITIONS=744} [2021-06-10 14:54:05,531 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 272 predicate places. [2021-06-10 14:54:05,531 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 744 transitions, 27034 flow [2021-06-10 14:54:05,531 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) [2021-06-10 14:54:05,531 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:05,531 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:05,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-10 14:54:05,531 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]=== [2021-06-10 14:54:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1790005521, now seen corresponding path program 43 times [2021-06-10 14:54:05,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:05,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395400914] [2021-06-10 14:54:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:05,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:05,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:05,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:05,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:05,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:05,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:54:05,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:05,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:05,570 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:05,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:05,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:54:05,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:54:05,615 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:54:05,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:54:05,640 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:05,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395400914] [2021-06-10 14:54:05,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:05,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:05,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573072307] [2021-06-10 14:54:05,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:05,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:05,664 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:05,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 744 transitions, 27034 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) [2021-06-10 14:54:05,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:05,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:05,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:09,618 INFO L129 PetriNetUnfolder]: 596/12843 cut-off events. [2021-06-10 14:54:09,618 INFO L130 PetriNetUnfolder]: For 333456/336520 co-relation queries the response was YES. [2021-06-10 14:54:09,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71373 conditions, 12843 events. 596/12843 cut-off events. For 333456/336520 co-relation queries the response was YES. Maximal size of possible extension queue 2127. Compared 236022 event pairs, 427 based on Foata normal form. 22/12380 useless extension candidates. Maximal degree in co-relation 71256. Up to 1847 conditions per place. [2021-06-10 14:54:09,731 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 656 selfloop transitions, 278 changer transitions 2/957 dead transitions. [2021-06-10 14:54:09,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 957 transitions, 36907 flow [2021-06-10 14:54:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:09,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:09,732 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:09,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:09,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:09,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:09,733 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) [2021-06-10 14:54:09,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:09,733 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:09,733 INFO L185 Difference]: Start difference. First operand has 323 places, 744 transitions, 27034 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:09,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 957 transitions, 36907 flow [2021-06-10 14:54:11,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 957 transitions, 35612 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-10 14:54:11,913 INFO L241 Difference]: Finished difference. Result has 329 places, 841 transitions, 30661 flow [2021-06-10 14:54:11,913 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26038, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30661, PETRI_PLACES=329, PETRI_TRANSITIONS=841} [2021-06-10 14:54:11,913 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 278 predicate places. [2021-06-10 14:54:11,913 INFO L480 AbstractCegarLoop]: Abstraction has has 329 places, 841 transitions, 30661 flow [2021-06-10 14:54:11,913 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) [2021-06-10 14:54:11,913 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:11,914 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:11,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-10 14:54:11,914 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]=== [2021-06-10 14:54:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash 727273215, now seen corresponding path program 44 times [2021-06-10 14:54:11,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:11,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277574667] [2021-06-10 14:54:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:11,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:11,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:11,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:11,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:11,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:11,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:11,936 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:11,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:11,946 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:11,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:11,968 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:54:11,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:54:11,999 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:12,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:12,025 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:12,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277574667] [2021-06-10 14:54:12,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:12,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:12,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735056839] [2021-06-10 14:54:12,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:12,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:12,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:12,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:12,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:12,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 841 transitions, 30661 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) [2021-06-10 14:54:12,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:12,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:12,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:16,238 INFO L129 PetriNetUnfolder]: 593/12959 cut-off events. [2021-06-10 14:54:16,238 INFO L130 PetriNetUnfolder]: For 346346/349670 co-relation queries the response was YES. [2021-06-10 14:54:16,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72302 conditions, 12959 events. 593/12959 cut-off events. For 346346/349670 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 239031 event pairs, 505 based on Foata normal form. 39/12495 useless extension candidates. Maximal degree in co-relation 72181. Up to 1781 conditions per place. [2021-06-10 14:54:16,350 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 381 selfloop transitions, 479 changer transitions 1/882 dead transitions. [2021-06-10 14:54:16,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 882 transitions, 33395 flow [2021-06-10 14:54:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:16,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:16,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:16,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:16,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:16,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:16,352 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) [2021-06-10 14:54:16,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:16,352 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:16,352 INFO L185 Difference]: Start difference. First operand has 329 places, 841 transitions, 30661 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:16,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 882 transitions, 33395 flow [2021-06-10 14:54:18,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 882 transitions, 33022 flow, removed 82 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:18,753 INFO L241 Difference]: Finished difference. Result has 336 places, 849 transitions, 31563 flow [2021-06-10 14:54:18,754 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=30323, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31563, PETRI_PLACES=336, PETRI_TRANSITIONS=849} [2021-06-10 14:54:18,754 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 285 predicate places. [2021-06-10 14:54:18,754 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 849 transitions, 31563 flow [2021-06-10 14:54:18,754 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) [2021-06-10 14:54:18,754 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:18,754 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:18,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-10 14:54:18,754 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]=== [2021-06-10 14:54:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1144392531, now seen corresponding path program 45 times [2021-06-10 14:54:18,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:18,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014671951] [2021-06-10 14:54:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:18,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:18,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:18,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:18,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:18,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:18,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:18,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:18,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:18,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:18,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:18,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:18,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:18,817 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:18,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:18,840 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:18,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:18,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014671951] [2021-06-10 14:54:18,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425022898] [2021-06-10 14:54:18,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:18,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:18,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:18,863 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:18,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 849 transitions, 31563 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) [2021-06-10 14:54:18,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:18,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:18,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:23,284 INFO L129 PetriNetUnfolder]: 585/12957 cut-off events. [2021-06-10 14:54:23,284 INFO L130 PetriNetUnfolder]: For 355072/358292 co-relation queries the response was YES. [2021-06-10 14:54:23,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73514 conditions, 12957 events. 585/12957 cut-off events. For 355072/358292 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 238675 event pairs, 532 based on Foata normal form. 37/12509 useless extension candidates. Maximal degree in co-relation 73391. Up to 1929 conditions per place. [2021-06-10 14:54:23,399 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 590 selfloop transitions, 369 changer transitions 1/981 dead transitions. [2021-06-10 14:54:23,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 981 transitions, 38558 flow [2021-06-10 14:54:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:23,400 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:23,400 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:23,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:23,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:23,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:23,401 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) [2021-06-10 14:54:23,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:23,401 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:23,401 INFO L185 Difference]: Start difference. First operand has 336 places, 849 transitions, 31563 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:23,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 981 transitions, 38558 flow [2021-06-10 14:54:25,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 981 transitions, 37593 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:25,873 INFO L241 Difference]: Finished difference. Result has 344 places, 870 transitions, 32494 flow [2021-06-10 14:54:25,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=30639, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32494, PETRI_PLACES=344, PETRI_TRANSITIONS=870} [2021-06-10 14:54:25,874 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 293 predicate places. [2021-06-10 14:54:25,874 INFO L480 AbstractCegarLoop]: Abstraction has has 344 places, 870 transitions, 32494 flow [2021-06-10 14:54:25,874 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) [2021-06-10 14:54:25,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:25,874 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:25,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-10 14:54:25,875 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]=== [2021-06-10 14:54:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash 446493953, now seen corresponding path program 46 times [2021-06-10 14:54:25,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:25,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959968369] [2021-06-10 14:54:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:25,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:25,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:25,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:25,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:25,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:25,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:25,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:25,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:25,923 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:54:25,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:54:25,951 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:25,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:25,973 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:25,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:25,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959968369] [2021-06-10 14:54:25,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:25,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:25,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475287880] [2021-06-10 14:54:25,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:25,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:25,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:25,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:25,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 870 transitions, 32494 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) [2021-06-10 14:54:25,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:25,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:25,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:30,720 INFO L129 PetriNetUnfolder]: 552/13372 cut-off events. [2021-06-10 14:54:30,720 INFO L130 PetriNetUnfolder]: For 381594/385626 co-relation queries the response was YES. [2021-06-10 14:54:30,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76155 conditions, 13372 events. 552/13372 cut-off events. For 381594/385626 co-relation queries the response was YES. Maximal size of possible extension queue 2220. Compared 248728 event pairs, 507 based on Foata normal form. 45/12905 useless extension candidates. Maximal degree in co-relation 76027. Up to 1781 conditions per place. [2021-06-10 14:54:30,845 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 428 selfloop transitions, 478 changer transitions 1/928 dead transitions. [2021-06-10 14:54:30,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 928 transitions, 36369 flow [2021-06-10 14:54:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:30,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:30,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:30,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:30,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:30,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:30,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:30,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:30,847 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:30,847 INFO L185 Difference]: Start difference. First operand has 344 places, 870 transitions, 32494 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:30,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 928 transitions, 36369 flow [2021-06-10 14:54:33,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 928 transitions, 35897 flow, removed 59 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:33,797 INFO L241 Difference]: Finished difference. Result has 353 places, 887 transitions, 33910 flow [2021-06-10 14:54:33,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=32056, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33910, PETRI_PLACES=353, PETRI_TRANSITIONS=887} [2021-06-10 14:54:33,798 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 302 predicate places. [2021-06-10 14:54:33,798 INFO L480 AbstractCegarLoop]: Abstraction has has 353 places, 887 transitions, 33910 flow [2021-06-10 14:54:33,798 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) [2021-06-10 14:54:33,798 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:33,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:33,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-10 14:54:33,798 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]=== [2021-06-10 14:54:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1844986715, now seen corresponding path program 47 times [2021-06-10 14:54:33,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:33,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796716261] [2021-06-10 14:54:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:33,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:33,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:33,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:33,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:33,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:33,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:33,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:33,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:33,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:33,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:33,845 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:54:33,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:54:33,874 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:33,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:33,896 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:33,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:33,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796716261] [2021-06-10 14:54:33,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:33,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:33,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127832241] [2021-06-10 14:54:33,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:33,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:33,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:33,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:33,920 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:33,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 887 transitions, 33910 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) [2021-06-10 14:54:33,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:33,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:33,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:38,798 INFO L129 PetriNetUnfolder]: 550/13352 cut-off events. [2021-06-10 14:54:38,798 INFO L130 PetriNetUnfolder]: For 391680/395707 co-relation queries the response was YES. [2021-06-10 14:54:38,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77019 conditions, 13352 events. 550/13352 cut-off events. For 391680/395707 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 248112 event pairs, 532 based on Foata normal form. 41/12885 useless extension candidates. Maximal degree in co-relation 76887. Up to 1929 conditions per place. [2021-06-10 14:54:38,910 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 547 selfloop transitions, 431 changer transitions 1/1000 dead transitions. [2021-06-10 14:54:38,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1000 transitions, 40335 flow [2021-06-10 14:54:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:38,911 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:38,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:38,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:38,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:38,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:38,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:38,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:38,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:38,913 INFO L185 Difference]: Start difference. First operand has 353 places, 887 transitions, 33910 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:38,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1000 transitions, 40335 flow [2021-06-10 14:54:41,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 1000 transitions, 39542 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:41,945 INFO L241 Difference]: Finished difference. Result has 361 places, 898 transitions, 34689 flow [2021-06-10 14:54:41,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=33129, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34689, PETRI_PLACES=361, PETRI_TRANSITIONS=898} [2021-06-10 14:54:41,946 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 310 predicate places. [2021-06-10 14:54:41,946 INFO L480 AbstractCegarLoop]: Abstraction has has 361 places, 898 transitions, 34689 flow [2021-06-10 14:54:41,946 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) [2021-06-10 14:54:41,946 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:41,946 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:41,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-10 14:54:41,946 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]=== [2021-06-10 14:54:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1774227033, now seen corresponding path program 48 times [2021-06-10 14:54:41,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:41,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641082243] [2021-06-10 14:54:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:41,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:41,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:41,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:41,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:41,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:41,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:41,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:41,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:41,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:41,990 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:54:41,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:42,019 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:42,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:42,042 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:42,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:42,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641082243] [2021-06-10 14:54:42,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:42,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:42,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593783213] [2021-06-10 14:54:42,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:42,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:42,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:42,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:42,064 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:42,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 898 transitions, 34689 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) [2021-06-10 14:54:42,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:42,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:42,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:47,062 INFO L129 PetriNetUnfolder]: 512/13732 cut-off events. [2021-06-10 14:54:47,063 INFO L130 PetriNetUnfolder]: For 410162/414322 co-relation queries the response was YES. [2021-06-10 14:54:47,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79420 conditions, 13732 events. 512/13732 cut-off events. For 410162/414322 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 257480 event pairs, 472 based on Foata normal form. 41/13245 useless extension candidates. Maximal degree in co-relation 79284. Up to 1965 conditions per place. [2021-06-10 14:54:47,181 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 563 selfloop transitions, 414 changer transitions 2/1000 dead transitions. [2021-06-10 14:54:47,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 1000 transitions, 40510 flow [2021-06-10 14:54:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:47,182 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:47,182 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:47,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:47,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:47,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:47,183 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) [2021-06-10 14:54:47,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:47,183 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:47,183 INFO L185 Difference]: Start difference. First operand has 361 places, 898 transitions, 34689 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:47,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 1000 transitions, 40510 flow [2021-06-10 14:54:50,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1000 transitions, 39974 flow, removed 91 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:50,404 INFO L241 Difference]: Finished difference. Result has 370 places, 924 transitions, 36324 flow [2021-06-10 14:54:50,404 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=34219, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36324, PETRI_PLACES=370, PETRI_TRANSITIONS=924} [2021-06-10 14:54:50,405 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 319 predicate places. [2021-06-10 14:54:50,405 INFO L480 AbstractCegarLoop]: Abstraction has has 370 places, 924 transitions, 36324 flow [2021-06-10 14:54:50,405 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) [2021-06-10 14:54:50,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:50,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:50,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-10 14:54:50,405 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]=== [2021-06-10 14:54:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash -415000911, now seen corresponding path program 49 times [2021-06-10 14:54:50,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:50,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944999119] [2021-06-10 14:54:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:50,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:50,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:50,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:50,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:50,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:50,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:50,441 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:50,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:50,454 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:50,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:50,471 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:50,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:50,494 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:50,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:50,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944999119] [2021-06-10 14:54:50,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:50,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:50,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223852779] [2021-06-10 14:54:50,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:50,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:50,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 924 transitions, 36324 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) [2021-06-10 14:54:50,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:50,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:50,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:55,651 INFO L129 PetriNetUnfolder]: 512/13723 cut-off events. [2021-06-10 14:54:55,651 INFO L130 PetriNetUnfolder]: For 419558/423412 co-relation queries the response was YES. [2021-06-10 14:54:55,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80413 conditions, 13723 events. 512/13723 cut-off events. For 419558/423412 co-relation queries the response was YES. Maximal size of possible extension queue 2291. Compared 257411 event pairs, 512 based on Foata normal form. 43/13239 useless extension candidates. Maximal degree in co-relation 80273. Up to 1781 conditions per place. [2021-06-10 14:54:55,765 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 458 selfloop transitions, 487 changer transitions 2/968 dead transitions. [2021-06-10 14:54:55,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 968 transitions, 39808 flow [2021-06-10 14:54:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:54:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:54:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:54:55,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:54:55,766 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:54:55,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:54:55,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:55,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:54:55,767 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) [2021-06-10 14:54:55,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:55,768 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:55,768 INFO L185 Difference]: Start difference. First operand has 370 places, 924 transitions, 36324 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:54:55,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 968 transitions, 39808 flow [2021-06-10 14:54:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 968 transitions, 39137 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:59,042 INFO L241 Difference]: Finished difference. Result has 376 places, 931 transitions, 37021 flow [2021-06-10 14:54:59,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=35679, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37021, PETRI_PLACES=376, PETRI_TRANSITIONS=931} [2021-06-10 14:54:59,043 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 325 predicate places. [2021-06-10 14:54:59,043 INFO L480 AbstractCegarLoop]: Abstraction has has 376 places, 931 transitions, 37021 flow [2021-06-10 14:54:59,043 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) [2021-06-10 14:54:59,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:59,043 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:59,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-10 14:54:59,043 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]=== [2021-06-10 14:54:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:59,043 INFO L82 PathProgramCache]: Analyzing trace with hash 571685001, now seen corresponding path program 50 times [2021-06-10 14:54:59,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:59,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901862824] [2021-06-10 14:54:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:59,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:59,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:59,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:59,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:59,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:59,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:59,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:59,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:59,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:59,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:59,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:59,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:59,105 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:54:59,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:54:59,128 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:54:59,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:54:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:59,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901862824] [2021-06-10 14:54:59,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:59,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:54:59,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650951198] [2021-06-10 14:54:59,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:54:59,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:54:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:54:59,150 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:54:59,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 931 transitions, 37021 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) [2021-06-10 14:54:59,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:59,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:54:59,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:04,499 INFO L129 PetriNetUnfolder]: 512/13713 cut-off events. [2021-06-10 14:55:04,500 INFO L130 PetriNetUnfolder]: For 422671/426501 co-relation queries the response was YES. [2021-06-10 14:55:04,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80910 conditions, 13713 events. 512/13713 cut-off events. For 422671/426501 co-relation queries the response was YES. Maximal size of possible extension queue 2289. Compared 257082 event pairs, 512 based on Foata normal form. 43/13229 useless extension candidates. Maximal degree in co-relation 80768. Up to 1781 conditions per place. [2021-06-10 14:55:04,645 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 458 selfloop transitions, 486 changer transitions 1/966 dead transitions. [2021-06-10 14:55:04,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 40126 flow [2021-06-10 14:55:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:04,646 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:04,646 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:04,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:04,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:04,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:04,647 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) [2021-06-10 14:55:04,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:04,647 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:04,648 INFO L185 Difference]: Start difference. First operand has 376 places, 931 transitions, 37021 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:04,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 40126 flow [2021-06-10 14:55:08,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 966 transitions, 39153 flow, removed 27 selfloop flow, removed 6 redundant places. [2021-06-10 14:55:08,373 INFO L241 Difference]: Finished difference. Result has 379 places, 931 transitions, 37043 flow [2021-06-10 14:55:08,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36066, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37043, PETRI_PLACES=379, PETRI_TRANSITIONS=931} [2021-06-10 14:55:08,374 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 328 predicate places. [2021-06-10 14:55:08,374 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 931 transitions, 37043 flow [2021-06-10 14:55:08,375 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) [2021-06-10 14:55:08,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:08,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:08,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-10 14:55:08,375 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]=== [2021-06-10 14:55:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1658613113, now seen corresponding path program 51 times [2021-06-10 14:55:08,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:08,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157054086] [2021-06-10 14:55:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:08,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:08,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:08,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:08,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:08,389 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:55:08,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:55:08,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:08,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:08,406 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:55:08,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:55:08,420 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:08,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:08,438 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:55:08,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:55:08,460 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:55:08,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:55:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:08,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157054086] [2021-06-10 14:55:08,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:08,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:55:08,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395646548] [2021-06-10 14:55:08,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:55:08,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:08,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:55:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:55:08,485 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:55:08,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 931 transitions, 37043 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) [2021-06-10 14:55:08,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:08,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:55:08,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:13,764 INFO L129 PetriNetUnfolder]: 512/13705 cut-off events. [2021-06-10 14:55:13,764 INFO L130 PetriNetUnfolder]: For 421112/424942 co-relation queries the response was YES. [2021-06-10 14:55:13,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80931 conditions, 13705 events. 512/13705 cut-off events. For 421112/424942 co-relation queries the response was YES. Maximal size of possible extension queue 2288. Compared 257025 event pairs, 512 based on Foata normal form. 43/13221 useless extension candidates. Maximal degree in co-relation 80789. Up to 1781 conditions per place. [2021-06-10 14:55:13,909 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 386 selfloop transitions, 536 changer transitions 1/944 dead transitions. [2021-06-10 14:55:13,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 944 transitions, 39157 flow [2021-06-10 14:55:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:13,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:13,910 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:13,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:13,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:13,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:13,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:13,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:13,911 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:13,911 INFO L185 Difference]: Start difference. First operand has 379 places, 931 transitions, 37043 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:13,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 944 transitions, 39157 flow [2021-06-10 14:55:17,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 944 transitions, 38174 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-06-10 14:55:17,444 INFO L241 Difference]: Finished difference. Result has 379 places, 930 transitions, 37095 flow [2021-06-10 14:55:17,444 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36070, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37095, PETRI_PLACES=379, PETRI_TRANSITIONS=930} [2021-06-10 14:55:17,445 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 328 predicate places. [2021-06-10 14:55:17,445 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 930 transitions, 37095 flow [2021-06-10 14:55:17,445 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) [2021-06-10 14:55:17,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:17,445 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:17,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-10 14:55:17,445 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]=== [2021-06-10 14:55:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:17,445 INFO L82 PathProgramCache]: Analyzing trace with hash -766084683, now seen corresponding path program 52 times [2021-06-10 14:55:17,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:17,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130285096] [2021-06-10 14:55:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:17,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:17,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:17,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:17,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:17,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:55:17,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:55:17,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:17,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:17,478 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:55:17,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:55:17,543 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:17,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:17,565 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:55:17,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:55:17,601 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:55:17,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:55:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:17,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130285096] [2021-06-10 14:55:17,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:17,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:55:17,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814637074] [2021-06-10 14:55:17,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:55:17,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:17,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:55:17,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:55:17,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:55:17,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 930 transitions, 37095 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) [2021-06-10 14:55:17,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:17,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:55:17,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:22,769 INFO L129 PetriNetUnfolder]: 512/13699 cut-off events. [2021-06-10 14:55:22,770 INFO L130 PetriNetUnfolder]: For 420785/424615 co-relation queries the response was YES. [2021-06-10 14:55:22,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80943 conditions, 13699 events. 512/13699 cut-off events. For 420785/424615 co-relation queries the response was YES. Maximal size of possible extension queue 2287. Compared 256713 event pairs, 512 based on Foata normal form. 43/13216 useless extension candidates. Maximal degree in co-relation 80803. Up to 1781 conditions per place. [2021-06-10 14:55:22,897 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 383 selfloop transitions, 537 changer transitions 2/943 dead transitions. [2021-06-10 14:55:22,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 943 transitions, 39207 flow [2021-06-10 14:55:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:22,898 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:22,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:22,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:22,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:22,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:22,899 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) [2021-06-10 14:55:22,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:22,899 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:22,899 INFO L185 Difference]: Start difference. First operand has 379 places, 930 transitions, 37095 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:22,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 943 transitions, 39207 flow [2021-06-10 14:55:26,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 943 transitions, 38446 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:26,452 INFO L241 Difference]: Finished difference. Result has 383 places, 928 transitions, 37326 flow [2021-06-10 14:55:26,452 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36344, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37326, PETRI_PLACES=383, PETRI_TRANSITIONS=928} [2021-06-10 14:55:26,453 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 332 predicate places. [2021-06-10 14:55:26,453 INFO L480 AbstractCegarLoop]: Abstraction has has 383 places, 928 transitions, 37326 flow [2021-06-10 14:55:26,453 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) [2021-06-10 14:55:26,453 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:26,453 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:26,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-10 14:55:26,453 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]=== [2021-06-10 14:55:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:26,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1694380721, now seen corresponding path program 53 times [2021-06-10 14:55:26,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:26,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218187990] [2021-06-10 14:55:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:26,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:26,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:26,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:26,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:26,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:55:26,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:55:26,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:26,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:26,496 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:55:26,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:55:26,522 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:26,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:26,539 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:55:26,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:55:26,566 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:55:26,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:55:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:26,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218187990] [2021-06-10 14:55:26,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:26,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:55:26,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812621015] [2021-06-10 14:55:26,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:55:26,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:26,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:55:26,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:55:26,588 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:55:26,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 928 transitions, 37326 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) [2021-06-10 14:55:26,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:26,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:55:26,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:31,817 INFO L129 PetriNetUnfolder]: 512/13691 cut-off events. [2021-06-10 14:55:31,817 INFO L130 PetriNetUnfolder]: For 420886/424721 co-relation queries the response was YES. [2021-06-10 14:55:31,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81432 conditions, 13691 events. 512/13691 cut-off events. For 420886/424721 co-relation queries the response was YES. Maximal size of possible extension queue 2302. Compared 256689 event pairs, 512 based on Foata normal form. 45/13211 useless extension candidates. Maximal degree in co-relation 81292. Up to 1781 conditions per place. [2021-06-10 14:55:31,937 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 380 selfloop transitions, 539 changer transitions 1/941 dead transitions. [2021-06-10 14:55:31,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 941 transitions, 39434 flow [2021-06-10 14:55:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:31,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:31,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:31,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:31,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:31,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:31,939 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) [2021-06-10 14:55:31,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:31,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:31,940 INFO L185 Difference]: Start difference. First operand has 383 places, 928 transitions, 37326 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:31,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 941 transitions, 39434 flow [2021-06-10 14:55:35,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 941 transitions, 38364 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:55:35,331 INFO L241 Difference]: Finished difference. Result has 385 places, 930 transitions, 37512 flow [2021-06-10 14:55:35,331 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36266, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37512, PETRI_PLACES=385, PETRI_TRANSITIONS=930} [2021-06-10 14:55:35,331 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 334 predicate places. [2021-06-10 14:55:35,332 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 930 transitions, 37512 flow [2021-06-10 14:55:35,332 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) [2021-06-10 14:55:35,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:35,332 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:35,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-10 14:55:35,332 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]=== [2021-06-10 14:55:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:35,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1853903521, now seen corresponding path program 54 times [2021-06-10 14:55:35,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:35,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798729030] [2021-06-10 14:55:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:35,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:35,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:35,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:35,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:55:35,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:55:35,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:35,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:35,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:35,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:35,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:35,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:35,398 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:55:35,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:55:35,427 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:55:35,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:55:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:35,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798729030] [2021-06-10 14:55:35,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:35,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:55:35,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880057773] [2021-06-10 14:55:35,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:55:35,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:35,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:55:35,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:55:35,450 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:55:35,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 930 transitions, 37512 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) [2021-06-10 14:55:35,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:35,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:55:35,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:40,812 INFO L129 PetriNetUnfolder]: 512/13685 cut-off events. [2021-06-10 14:55:40,812 INFO L130 PetriNetUnfolder]: For 424487/428322 co-relation queries the response was YES. [2021-06-10 14:55:40,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81525 conditions, 13685 events. 512/13685 cut-off events. For 424487/428322 co-relation queries the response was YES. Maximal size of possible extension queue 2301. Compared 256738 event pairs, 512 based on Foata normal form. 45/13206 useless extension candidates. Maximal degree in co-relation 81384. Up to 1781 conditions per place. [2021-06-10 14:55:40,932 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 433 selfloop transitions, 506 changer transitions 1/961 dead transitions. [2021-06-10 14:55:40,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 961 transitions, 40549 flow [2021-06-10 14:55:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:40,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:40,934 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:40,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:40,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:40,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:40,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:40,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:40,935 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:40,935 INFO L185 Difference]: Start difference. First operand has 385 places, 930 transitions, 37512 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 961 transitions, 40549 flow [2021-06-10 14:55:44,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 961 transitions, 39509 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-06-10 14:55:44,387 INFO L241 Difference]: Finished difference. Result has 389 places, 950 transitions, 38562 flow [2021-06-10 14:55:44,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=36503, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38562, PETRI_PLACES=389, PETRI_TRANSITIONS=950} [2021-06-10 14:55:44,388 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 338 predicate places. [2021-06-10 14:55:44,388 INFO L480 AbstractCegarLoop]: Abstraction has has 389 places, 950 transitions, 38562 flow [2021-06-10 14:55:44,388 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) [2021-06-10 14:55:44,388 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:44,388 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:44,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-10 14:55:44,388 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]=== [2021-06-10 14:55:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:44,388 INFO L82 PathProgramCache]: Analyzing trace with hash 629884087, now seen corresponding path program 55 times [2021-06-10 14:55:44,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:44,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600714768] [2021-06-10 14:55:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:44,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:44,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:44,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:44,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:44,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:55:44,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:55:44,410 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:44,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:44,420 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:55:44,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:55:44,434 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:44,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:44,453 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:55:44,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:55:44,477 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:55:44,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:55:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:44,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600714768] [2021-06-10 14:55:44,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:44,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:55:44,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436622494] [2021-06-10 14:55:44,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:55:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:44,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:55:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:55:44,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:55:44,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 950 transitions, 38562 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) [2021-06-10 14:55:44,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:44,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:55:44,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:49,703 INFO L129 PetriNetUnfolder]: 512/13679 cut-off events. [2021-06-10 14:55:49,703 INFO L130 PetriNetUnfolder]: For 426281/430116 co-relation queries the response was YES. [2021-06-10 14:55:49,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81666 conditions, 13679 events. 512/13679 cut-off events. For 426281/430116 co-relation queries the response was YES. Maximal size of possible extension queue 2300. Compared 256507 event pairs, 512 based on Foata normal form. 45/13201 useless extension candidates. Maximal degree in co-relation 81524. Up to 1781 conditions per place. [2021-06-10 14:55:49,826 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 372 selfloop transitions, 566 changer transitions 1/960 dead transitions. [2021-06-10 14:55:49,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 960 transitions, 40589 flow [2021-06-10 14:55:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:49,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:49,827 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:49,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:49,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:49,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:49,828 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) [2021-06-10 14:55:49,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:49,828 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:49,828 INFO L185 Difference]: Start difference. First operand has 389 places, 950 transitions, 38562 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:49,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 960 transitions, 40589 flow [2021-06-10 14:55:53,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 960 transitions, 39634 flow, removed 18 selfloop flow, removed 6 redundant places. [2021-06-10 14:55:53,382 INFO L241 Difference]: Finished difference. Result has 391 places, 949 transitions, 38687 flow [2021-06-10 14:55:53,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37617, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38687, PETRI_PLACES=391, PETRI_TRANSITIONS=949} [2021-06-10 14:55:53,383 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 340 predicate places. [2021-06-10 14:55:53,383 INFO L480 AbstractCegarLoop]: Abstraction has has 391 places, 949 transitions, 38687 flow [2021-06-10 14:55:53,383 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) [2021-06-10 14:55:53,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:53,384 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:53,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-10 14:55:53,432 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]=== [2021-06-10 14:55:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:53,432 INFO L82 PathProgramCache]: Analyzing trace with hash -606551797, now seen corresponding path program 56 times [2021-06-10 14:55:53,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:53,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102896472] [2021-06-10 14:55:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:53,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:53,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:53,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:53,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:53,449 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:55:53,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:55:53,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:53,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:53,466 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:55:53,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:55:53,481 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:53,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:53,499 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:55:53,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:55:53,523 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:55:53,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:55:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:53,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102896472] [2021-06-10 14:55:53,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:53,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:55:53,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858279257] [2021-06-10 14:55:53,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:55:53,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:53,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:55:53,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:55:53,547 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:55:53,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 949 transitions, 38687 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) [2021-06-10 14:55:53,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:53,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:55:53,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:58,756 INFO L129 PetriNetUnfolder]: 512/13674 cut-off events. [2021-06-10 14:55:58,756 INFO L130 PetriNetUnfolder]: For 425991/429826 co-relation queries the response was YES. [2021-06-10 14:55:58,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81799 conditions, 13674 events. 512/13674 cut-off events. For 425991/429826 co-relation queries the response was YES. Maximal size of possible extension queue 2299. Compared 256221 event pairs, 512 based on Foata normal form. 45/13196 useless extension candidates. Maximal degree in co-relation 81658. Up to 1781 conditions per place. [2021-06-10 14:55:58,874 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 379 selfloop transitions, 557 changer transitions 2/959 dead transitions. [2021-06-10 14:55:58,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 959 transitions, 40712 flow [2021-06-10 14:55:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:55:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:55:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:55:58,875 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:55:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:55:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:55:58,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:58,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:55:58,876 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) [2021-06-10 14:55:58,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:58,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:58,876 INFO L185 Difference]: Start difference. First operand has 391 places, 949 transitions, 38687 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:55:58,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 959 transitions, 40712 flow [2021-06-10 14:56:02,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 959 transitions, 39714 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:02,446 INFO L241 Difference]: Finished difference. Result has 394 places, 947 transitions, 38702 flow [2021-06-10 14:56:02,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37699, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=557, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38702, PETRI_PLACES=394, PETRI_TRANSITIONS=947} [2021-06-10 14:56:02,447 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 343 predicate places. [2021-06-10 14:56:02,447 INFO L480 AbstractCegarLoop]: Abstraction has has 394 places, 947 transitions, 38702 flow [2021-06-10 14:56:02,447 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) [2021-06-10 14:56:02,447 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:02,447 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:02,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-10 14:56:02,447 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]=== [2021-06-10 14:56:02,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:02,448 INFO L82 PathProgramCache]: Analyzing trace with hash -289807227, now seen corresponding path program 57 times [2021-06-10 14:56:02,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:02,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84724817] [2021-06-10 14:56:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:02,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:02,464 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:02,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:02,471 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:02,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:02,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:02,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:02,497 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:02,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:02,517 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:56:02,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:56:02,541 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:02,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:02,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84724817] [2021-06-10 14:56:02,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:02,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:02,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311091631] [2021-06-10 14:56:02,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:02,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:02,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:02,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:02,564 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:02,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 947 transitions, 38702 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) [2021-06-10 14:56:02,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:02,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:02,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:07,842 INFO L129 PetriNetUnfolder]: 512/13649 cut-off events. [2021-06-10 14:56:07,842 INFO L130 PetriNetUnfolder]: For 424507/428342 co-relation queries the response was YES. [2021-06-10 14:56:07,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81733 conditions, 13649 events. 512/13649 cut-off events. For 424507/428342 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 255715 event pairs, 512 based on Foata normal form. 45/13173 useless extension candidates. Maximal degree in co-relation 81592. Up to 1781 conditions per place. [2021-06-10 14:56:07,958 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 432 selfloop transitions, 501 changer transitions 3/957 dead transitions. [2021-06-10 14:56:07,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 957 transitions, 40723 flow [2021-06-10 14:56:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:56:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:56:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:56:07,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:56:07,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:56:07,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:56:07,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:07,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:56:07,960 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) [2021-06-10 14:56:07,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:07,960 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:07,960 INFO L185 Difference]: Start difference. First operand has 394 places, 947 transitions, 38702 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:56:07,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 957 transitions, 40723 flow [2021-06-10 14:56:11,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 957 transitions, 39613 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:11,600 INFO L241 Difference]: Finished difference. Result has 396 places, 944 transitions, 38460 flow [2021-06-10 14:56:11,601 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37602, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38460, PETRI_PLACES=396, PETRI_TRANSITIONS=944} [2021-06-10 14:56:11,601 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 345 predicate places. [2021-06-10 14:56:11,601 INFO L480 AbstractCegarLoop]: Abstraction has has 396 places, 944 transitions, 38460 flow [2021-06-10 14:56:11,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:11,601 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:11,602 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:11,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-10 14:56:11,602 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]=== [2021-06-10 14:56:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1413429073, now seen corresponding path program 58 times [2021-06-10 14:56:11,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:11,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220675321] [2021-06-10 14:56:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:11,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:11,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:11,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:11,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:11,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:11,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:11,624 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:11,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:11,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:11,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:11,645 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:56:11,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:56:11,677 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:56:11,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:56:11,703 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:11,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:11,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220675321] [2021-06-10 14:56:11,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:11,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:11,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066089140] [2021-06-10 14:56:11,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:11,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:11,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:11,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:11,731 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:11,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 944 transitions, 38460 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) [2021-06-10 14:56:11,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:11,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:11,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:16,962 INFO L129 PetriNetUnfolder]: 512/13635 cut-off events. [2021-06-10 14:56:16,962 INFO L130 PetriNetUnfolder]: For 423478/427308 co-relation queries the response was YES. [2021-06-10 14:56:17,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81628 conditions, 13635 events. 512/13635 cut-off events. For 423478/427308 co-relation queries the response was YES. Maximal size of possible extension queue 2274. Compared 255307 event pairs, 512 based on Foata normal form. 43/13158 useless extension candidates. Maximal degree in co-relation 81487. Up to 1781 conditions per place. [2021-06-10 14:56:17,082 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 445 selfloop transitions, 487 changer transitions 2/955 dead transitions. [2021-06-10 14:56:17,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 955 transitions, 40531 flow [2021-06-10 14:56:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:56:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:56:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:56:17,084 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:56:17,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:56:17,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:56:17,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:17,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:56:17,085 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) [2021-06-10 14:56:17,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:17,085 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:17,085 INFO L185 Difference]: Start difference. First operand has 396 places, 944 transitions, 38460 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:56:17,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 955 transitions, 40531 flow [2021-06-10 14:56:20,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 955 transitions, 39788 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 14:56:20,627 INFO L241 Difference]: Finished difference. Result has 401 places, 943 transitions, 38675 flow [2021-06-10 14:56:20,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37727, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38675, PETRI_PLACES=401, PETRI_TRANSITIONS=943} [2021-06-10 14:56:20,628 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 350 predicate places. [2021-06-10 14:56:20,628 INFO L480 AbstractCegarLoop]: Abstraction has has 401 places, 943 transitions, 38675 flow [2021-06-10 14:56:20,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:20,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:20,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:20,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-10 14:56:20,628 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]=== [2021-06-10 14:56:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1668317611, now seen corresponding path program 59 times [2021-06-10 14:56:20,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:20,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857724470] [2021-06-10 14:56:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:20,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:20,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:20,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:20,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:20,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:20,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:20,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:20,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:20,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:20,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:20,670 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:56:20,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:20,698 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:56:20,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:56:20,719 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:20,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:20,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857724470] [2021-06-10 14:56:20,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:20,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:20,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939523777] [2021-06-10 14:56:20,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:20,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:20,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:20,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:20,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:20,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 943 transitions, 38675 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) [2021-06-10 14:56:20,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:20,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:20,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:25,829 INFO L129 PetriNetUnfolder]: 505/13687 cut-off events. [2021-06-10 14:56:25,829 INFO L130 PetriNetUnfolder]: For 426627/430462 co-relation queries the response was YES. [2021-06-10 14:56:26,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82417 conditions, 13687 events. 505/13687 cut-off events. For 426627/430462 co-relation queries the response was YES. Maximal size of possible extension queue 2302. Compared 256819 event pairs, 505 based on Foata normal form. 45/13208 useless extension candidates. Maximal degree in co-relation 82275. Up to 1781 conditions per place. [2021-06-10 14:56:26,088 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 485 selfloop transitions, 491 changer transitions 2/999 dead transitions. [2021-06-10 14:56:26,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 999 transitions, 42939 flow [2021-06-10 14:56:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:56:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:56:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:56:26,089 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:56:26,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:56:26,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:56:26,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:26,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:56:26,101 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) [2021-06-10 14:56:26,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:26,102 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:26,102 INFO L185 Difference]: Start difference. First operand has 401 places, 943 transitions, 38675 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:56:26,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 999 transitions, 42939 flow [2021-06-10 14:56:29,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 999 transitions, 41941 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:29,654 INFO L241 Difference]: Finished difference. Result has 407 places, 963 transitions, 39796 flow [2021-06-10 14:56:29,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=37718, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39796, PETRI_PLACES=407, PETRI_TRANSITIONS=963} [2021-06-10 14:56:29,655 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 356 predicate places. [2021-06-10 14:56:29,655 INFO L480 AbstractCegarLoop]: Abstraction has has 407 places, 963 transitions, 39796 flow [2021-06-10 14:56:29,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:29,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:29,655 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:29,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-10 14:56:29,655 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]=== [2021-06-10 14:56:29,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:29,656 INFO L82 PathProgramCache]: Analyzing trace with hash 589092203, now seen corresponding path program 60 times [2021-06-10 14:56:29,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:29,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419916046] [2021-06-10 14:56:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:29,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:29,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:29,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:29,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:29,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:29,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:29,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:29,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:29,686 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:29,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:29,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:56:29,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:29,740 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:56:29,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:56:29,765 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:29,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:29,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419916046] [2021-06-10 14:56:29,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:29,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:29,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448972844] [2021-06-10 14:56:29,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:29,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:29,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:29,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:29,790 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:29,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 963 transitions, 39796 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) [2021-06-10 14:56:29,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:29,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:29,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:35,019 INFO L129 PetriNetUnfolder]: 505/13677 cut-off events. [2021-06-10 14:56:35,019 INFO L130 PetriNetUnfolder]: For 438403/442428 co-relation queries the response was YES. [2021-06-10 14:56:35,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82778 conditions, 13677 events. 505/13677 cut-off events. For 438403/442428 co-relation queries the response was YES. Maximal size of possible extension queue 2300. Compared 256451 event pairs, 505 based on Foata normal form. 49/13202 useless extension candidates. Maximal degree in co-relation 82632. Up to 1781 conditions per place. [2021-06-10 14:56:35,132 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 415 selfloop transitions, 538 changer transitions 2/976 dead transitions. [2021-06-10 14:56:35,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 976 transitions, 42026 flow [2021-06-10 14:56:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:56:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:56:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:56:35,134 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:56:35,134 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:56:35,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:56:35,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:35,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:56:35,134 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) [2021-06-10 14:56:35,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:35,135 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:35,135 INFO L185 Difference]: Start difference. First operand has 407 places, 963 transitions, 39796 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:56:35,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 976 transitions, 42026 flow [2021-06-10 14:56:39,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 976 transitions, 41221 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:39,228 INFO L241 Difference]: Finished difference. Result has 411 places, 969 transitions, 40410 flow [2021-06-10 14:56:39,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39003, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40410, PETRI_PLACES=411, PETRI_TRANSITIONS=969} [2021-06-10 14:56:39,229 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 360 predicate places. [2021-06-10 14:56:39,229 INFO L480 AbstractCegarLoop]: Abstraction has has 411 places, 969 transitions, 40410 flow [2021-06-10 14:56:39,229 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) [2021-06-10 14:56:39,229 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:39,229 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:39,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-10 14:56:39,229 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]=== [2021-06-10 14:56:39,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:39,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1616601303, now seen corresponding path program 61 times [2021-06-10 14:56:39,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:39,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142499781] [2021-06-10 14:56:39,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:39,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:39,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:39,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:39,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:39,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:39,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:39,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:39,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:39,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:39,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:39,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:56:39,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:39,308 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:56:39,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:56:39,332 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:39,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142499781] [2021-06-10 14:56:39,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:39,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:39,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670196436] [2021-06-10 14:56:39,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:39,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:39,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:39,357 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:39,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 969 transitions, 40410 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) [2021-06-10 14:56:39,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:39,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:39,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:44,822 INFO L129 PetriNetUnfolder]: 505/13667 cut-off events. [2021-06-10 14:56:44,822 INFO L130 PetriNetUnfolder]: For 442154/446179 co-relation queries the response was YES. [2021-06-10 14:56:44,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83363 conditions, 13667 events. 505/13667 cut-off events. For 442154/446179 co-relation queries the response was YES. Maximal size of possible extension queue 2298. Compared 256168 event pairs, 505 based on Foata normal form. 49/13192 useless extension candidates. Maximal degree in co-relation 83217. Up to 1781 conditions per place. [2021-06-10 14:56:44,940 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 415 selfloop transitions, 536 changer transitions 2/974 dead transitions. [2021-06-10 14:56:44,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 974 transitions, 42336 flow [2021-06-10 14:56:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:56:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:56:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:56:44,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:56:44,941 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:56:44,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:56:44,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:44,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:56:44,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:44,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:44,943 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:44,943 INFO L185 Difference]: Start difference. First operand has 411 places, 969 transitions, 40410 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:56:44,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 974 transitions, 42336 flow [2021-06-10 14:56:49,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 974 transitions, 41364 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:49,184 INFO L241 Difference]: Finished difference. Result has 414 places, 967 transitions, 40413 flow [2021-06-10 14:56:49,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39448, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40413, PETRI_PLACES=414, PETRI_TRANSITIONS=967} [2021-06-10 14:56:49,184 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 363 predicate places. [2021-06-10 14:56:49,184 INFO L480 AbstractCegarLoop]: Abstraction has has 414 places, 967 transitions, 40413 flow [2021-06-10 14:56:49,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:49,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:49,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:49,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-10 14:56:49,185 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]=== [2021-06-10 14:56:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:49,185 INFO L82 PathProgramCache]: Analyzing trace with hash -447527263, now seen corresponding path program 62 times [2021-06-10 14:56:49,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:49,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709639343] [2021-06-10 14:56:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:49,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:49,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:49,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:49,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:49,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:49,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:49,208 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:49,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:49,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:49,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:49,240 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:56:49,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:56:49,273 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:56:49,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:56:49,297 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:49,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:49,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709639343] [2021-06-10 14:56:49,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:49,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:49,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3276817] [2021-06-10 14:56:49,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:49,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:49,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:49,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:49,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:49,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 967 transitions, 40413 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) [2021-06-10 14:56:49,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:49,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:49,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:54,799 INFO L129 PetriNetUnfolder]: 505/13657 cut-off events. [2021-06-10 14:56:54,799 INFO L130 PetriNetUnfolder]: For 441769/445794 co-relation queries the response was YES. [2021-06-10 14:56:54,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83476 conditions, 13657 events. 505/13657 cut-off events. For 441769/445794 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 255966 event pairs, 505 based on Foata normal form. 49/13182 useless extension candidates. Maximal degree in co-relation 83330. Up to 1781 conditions per place. [2021-06-10 14:56:54,931 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 415 selfloop transitions, 533 changer transitions 3/972 dead transitions. [2021-06-10 14:56:54,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 972 transitions, 42335 flow [2021-06-10 14:56:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:56:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:56:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:56:54,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:56:54,932 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:56:54,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:56:54,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:54,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:56:54,933 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) [2021-06-10 14:56:54,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:54,949 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:54,949 INFO L185 Difference]: Start difference. First operand has 414 places, 967 transitions, 40413 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:56:54,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 972 transitions, 42335 flow [2021-06-10 14:56:59,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 972 transitions, 41206 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-06-10 14:56:59,184 INFO L241 Difference]: Finished difference. Result has 414 places, 964 transitions, 40215 flow [2021-06-10 14:56:59,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39294, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40215, PETRI_PLACES=414, PETRI_TRANSITIONS=964} [2021-06-10 14:56:59,185 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 363 predicate places. [2021-06-10 14:56:59,185 INFO L480 AbstractCegarLoop]: Abstraction has has 414 places, 964 transitions, 40215 flow [2021-06-10 14:56:59,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:59,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:59,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:59,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-10 14:56:59,185 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]=== [2021-06-10 14:56:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash 615566001, now seen corresponding path program 63 times [2021-06-10 14:56:59,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:59,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979317821] [2021-06-10 14:56:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:59,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:59,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:59,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:59,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:59,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:56:59,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:56:59,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:59,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:59,216 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:59,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:59,239 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:59,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:59,257 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:56:59,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:56:59,280 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:56:59,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:56:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:59,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979317821] [2021-06-10 14:56:59,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:59,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:56:59,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035576550] [2021-06-10 14:56:59,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:56:59,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:59,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:56:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:56:59,309 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:56:59,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 964 transitions, 40215 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) [2021-06-10 14:56:59,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:59,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:56:59,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:04,729 INFO L129 PetriNetUnfolder]: 505/13643 cut-off events. [2021-06-10 14:57:04,729 INFO L130 PetriNetUnfolder]: For 439703/443728 co-relation queries the response was YES. [2021-06-10 14:57:04,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83371 conditions, 13643 events. 505/13643 cut-off events. For 439703/443728 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 255636 event pairs, 505 based on Foata normal form. 49/13168 useless extension candidates. Maximal degree in co-relation 83227. Up to 1781 conditions per place. [2021-06-10 14:57:04,843 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 397 selfloop transitions, 549 changer transitions 2/969 dead transitions. [2021-06-10 14:57:04,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 969 transitions, 42131 flow [2021-06-10 14:57:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:57:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:57:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:57:04,844 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:57:04,844 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:57:04,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:57:04,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:04,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:57:04,844 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) [2021-06-10 14:57:04,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:04,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:04,845 INFO L185 Difference]: Start difference. First operand has 414 places, 964 transitions, 40215 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:57:04,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 969 transitions, 42131 flow [2021-06-10 14:57:08,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 969 transitions, 41133 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 14:57:08,899 INFO L241 Difference]: Finished difference. Result has 416 places, 962 transitions, 40214 flow [2021-06-10 14:57:08,900 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39227, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40214, PETRI_PLACES=416, PETRI_TRANSITIONS=962} [2021-06-10 14:57:08,900 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 365 predicate places. [2021-06-10 14:57:08,900 INFO L480 AbstractCegarLoop]: Abstraction has has 416 places, 962 transitions, 40214 flow [2021-06-10 14:57:08,900 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) [2021-06-10 14:57:08,900 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:08,900 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:08,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-10 14:57:08,901 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]=== [2021-06-10 14:57:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1723930901, now seen corresponding path program 64 times [2021-06-10 14:57:08,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:08,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889388388] [2021-06-10 14:57:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:08,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:08,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:08,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:08,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:08,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:57:08,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:57:08,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:08,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:08,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:08,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:08,944 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:08,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:08,962 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:57:08,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:57:08,985 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:57:08,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:57:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:09,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889388388] [2021-06-10 14:57:09,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:09,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:57:09,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520946395] [2021-06-10 14:57:09,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:57:09,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:09,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:57:09,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:57:09,009 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:57:09,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 962 transitions, 40214 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) [2021-06-10 14:57:09,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:09,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:57:09,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:14,445 INFO L129 PetriNetUnfolder]: 505/13631 cut-off events. [2021-06-10 14:57:14,445 INFO L130 PetriNetUnfolder]: For 438614/442639 co-relation queries the response was YES. [2021-06-10 14:57:14,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83447 conditions, 13631 events. 505/13631 cut-off events. For 438614/442639 co-relation queries the response was YES. Maximal size of possible extension queue 2290. Compared 255339 event pairs, 505 based on Foata normal form. 49/13157 useless extension candidates. Maximal degree in co-relation 83304. Up to 1781 conditions per place. [2021-06-10 14:57:14,563 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 469 selfloop transitions, 501 changer transitions 1/992 dead transitions. [2021-06-10 14:57:14,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 992 transitions, 43372 flow [2021-06-10 14:57:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:57:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:57:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:57:14,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:57:14,564 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:57:14,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:57:14,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:14,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:57:14,565 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) [2021-06-10 14:57:14,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:14,565 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:14,565 INFO L185 Difference]: Start difference. First operand has 416 places, 962 transitions, 40214 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:57:14,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 992 transitions, 43372 flow [2021-06-10 14:57:18,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 992 transitions, 42290 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 14:57:18,480 INFO L241 Difference]: Finished difference. Result has 420 places, 978 transitions, 41016 flow [2021-06-10 14:57:18,481 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=39142, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41016, PETRI_PLACES=420, PETRI_TRANSITIONS=978} [2021-06-10 14:57:18,481 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 369 predicate places. [2021-06-10 14:57:18,481 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 978 transitions, 41016 flow [2021-06-10 14:57:18,481 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) [2021-06-10 14:57:18,481 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:18,481 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:18,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-10 14:57:18,482 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]=== [2021-06-10 14:57:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:18,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1168988463, now seen corresponding path program 65 times [2021-06-10 14:57:18,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:18,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289547139] [2021-06-10 14:57:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:18,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:18,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:18,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:18,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:18,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:57:18,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:57:18,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:18,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:18,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:18,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:18,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:57:18,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:18,560 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:57:18,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:57:18,583 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:57:18,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:57:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:18,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289547139] [2021-06-10 14:57:18,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:18,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:57:18,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950317827] [2021-06-10 14:57:18,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:57:18,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:57:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:57:18,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:57:18,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 978 transitions, 41016 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) [2021-06-10 14:57:18,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:18,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:57:18,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:23,954 INFO L129 PetriNetUnfolder]: 505/13626 cut-off events. [2021-06-10 14:57:23,954 INFO L130 PetriNetUnfolder]: For 440967/444987 co-relation queries the response was YES. [2021-06-10 14:57:24,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83479 conditions, 13626 events. 505/13626 cut-off events. For 440967/444987 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 255153 event pairs, 505 based on Foata normal form. 47/13150 useless extension candidates. Maximal degree in co-relation 83334. Up to 1781 conditions per place. [2021-06-10 14:57:24,269 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 477 selfloop transitions, 491 changer transitions 2/991 dead transitions. [2021-06-10 14:57:24,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 991 transitions, 43333 flow [2021-06-10 14:57:24,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:57:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:57:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:57:24,270 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:57:24,270 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:57:24,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:57:24,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:24,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:57:24,271 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) [2021-06-10 14:57:24,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:24,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:24,272 INFO L185 Difference]: Start difference. First operand has 420 places, 978 transitions, 41016 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:57:24,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 991 transitions, 43333 flow [2021-06-10 14:57:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 991 transitions, 42386 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:28,257 INFO L241 Difference]: Finished difference. Result has 424 places, 979 transitions, 41120 flow [2021-06-10 14:57:28,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40079, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41120, PETRI_PLACES=424, PETRI_TRANSITIONS=979} [2021-06-10 14:57:28,258 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 373 predicate places. [2021-06-10 14:57:28,258 INFO L480 AbstractCegarLoop]: Abstraction has has 424 places, 979 transitions, 41120 flow [2021-06-10 14:57:28,258 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) [2021-06-10 14:57:28,258 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:28,258 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:28,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-10 14:57:28,258 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]=== [2021-06-10 14:57:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:28,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1670270737, now seen corresponding path program 66 times [2021-06-10 14:57:28,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:28,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668651210] [2021-06-10 14:57:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:28,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:28,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:28,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:28,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:28,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:57:28,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:57:28,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:28,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:28,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:28,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:28,306 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:28,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:28,333 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:57:28,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:57:28,357 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:57:28,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:57:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:28,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668651210] [2021-06-10 14:57:28,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:28,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:57:28,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29921140] [2021-06-10 14:57:28,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:57:28,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:28,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:57:28,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:57:28,379 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:57:28,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 979 transitions, 41120 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) [2021-06-10 14:57:28,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:28,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:57:28,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:33,638 INFO L129 PetriNetUnfolder]: 505/13616 cut-off events. [2021-06-10 14:57:33,638 INFO L130 PetriNetUnfolder]: For 441028/445048 co-relation queries the response was YES. [2021-06-10 14:57:33,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83567 conditions, 13616 events. 505/13616 cut-off events. For 441028/445048 co-relation queries the response was YES. Maximal size of possible extension queue 2271. Compared 254934 event pairs, 505 based on Foata normal form. 47/13140 useless extension candidates. Maximal degree in co-relation 83421. Up to 1781 conditions per place. [2021-06-10 14:57:33,755 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 470 selfloop transitions, 496 changer transitions 2/989 dead transitions. [2021-06-10 14:57:33,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 989 transitions, 43300 flow [2021-06-10 14:57:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:57:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:57:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:57:33,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:57:33,756 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:57:33,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:57:33,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:33,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:57:33,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:33,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:33,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:33,757 INFO L185 Difference]: Start difference. First operand has 424 places, 979 transitions, 41120 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:57:33,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 989 transitions, 43300 flow [2021-06-10 14:57:37,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 989 transitions, 42325 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 14:57:37,779 INFO L241 Difference]: Finished difference. Result has 427 places, 979 transitions, 41174 flow [2021-06-10 14:57:37,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40155, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41174, PETRI_PLACES=427, PETRI_TRANSITIONS=979} [2021-06-10 14:57:37,780 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 376 predicate places. [2021-06-10 14:57:37,780 INFO L480 AbstractCegarLoop]: Abstraction has has 427 places, 979 transitions, 41174 flow [2021-06-10 14:57:37,781 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) [2021-06-10 14:57:37,781 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:37,781 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:37,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-10 14:57:37,781 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]=== [2021-06-10 14:57:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1552260927, now seen corresponding path program 67 times [2021-06-10 14:57:37,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:37,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553258481] [2021-06-10 14:57:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:37,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:37,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:37,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:57:37,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:57:37,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:37,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:37,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:37,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:37,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:37,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:37,865 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:57:37,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:57:37,887 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:57:37,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:57:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:37,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553258481] [2021-06-10 14:57:37,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:37,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:57:37,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112677591] [2021-06-10 14:57:37,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:57:37,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:57:37,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:57:37,962 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:57:37,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 979 transitions, 41174 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) [2021-06-10 14:57:37,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:37,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:57:37,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:43,244 INFO L129 PetriNetUnfolder]: 505/13601 cut-off events. [2021-06-10 14:57:43,244 INFO L130 PetriNetUnfolder]: For 440931/444951 co-relation queries the response was YES. [2021-06-10 14:57:43,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83482 conditions, 13601 events. 505/13601 cut-off events. For 440931/444951 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 254584 event pairs, 505 based on Foata normal form. 47/13126 useless extension candidates. Maximal degree in co-relation 83335. Up to 1781 conditions per place. [2021-06-10 14:57:43,357 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 476 selfloop transitions, 488 changer transitions 2/987 dead transitions. [2021-06-10 14:57:43,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 987 transitions, 43245 flow [2021-06-10 14:57:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:57:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:57:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:57:43,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:57:43,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:57:43,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:57:43,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:43,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:57:43,359 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) [2021-06-10 14:57:43,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:43,360 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:43,360 INFO L185 Difference]: Start difference. First operand has 427 places, 979 transitions, 41174 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:57:43,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 987 transitions, 43245 flow [2021-06-10 14:57:47,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 987 transitions, 42443 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-10 14:57:47,283 INFO L241 Difference]: Finished difference. Result has 430 places, 980 transitions, 41414 flow [2021-06-10 14:57:47,284 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40382, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41414, PETRI_PLACES=430, PETRI_TRANSITIONS=980} [2021-06-10 14:57:47,284 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 379 predicate places. [2021-06-10 14:57:47,284 INFO L480 AbstractCegarLoop]: Abstraction has has 430 places, 980 transitions, 41414 flow [2021-06-10 14:57:47,284 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) [2021-06-10 14:57:47,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:47,284 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:47,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-10 14:57:47,284 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]=== [2021-06-10 14:57:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash 469447451, now seen corresponding path program 68 times [2021-06-10 14:57:47,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:47,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539975949] [2021-06-10 14:57:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:47,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:47,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:47,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:47,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:47,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:57:47,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:57:47,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:47,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:47,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:47,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:47,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:47,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:47,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:57:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:57:47,379 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:57:47,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:57:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:47,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539975949] [2021-06-10 14:57:47,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:47,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:57:47,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495608027] [2021-06-10 14:57:47,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:57:47,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:47,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:57:47,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:57:47,404 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:57:47,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 980 transitions, 41414 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) [2021-06-10 14:57:47,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:47,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:57:47,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:52,784 INFO L129 PetriNetUnfolder]: 505/13591 cut-off events. [2021-06-10 14:57:52,784 INFO L130 PetriNetUnfolder]: For 444409/448434 co-relation queries the response was YES. [2021-06-10 14:57:52,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83912 conditions, 13591 events. 505/13591 cut-off events. For 444409/448434 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 254473 event pairs, 505 based on Foata normal form. 49/13118 useless extension candidates. Maximal degree in co-relation 83765. Up to 1781 conditions per place. [2021-06-10 14:57:52,902 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 478 selfloop transitions, 485 changer transitions 1/985 dead transitions. [2021-06-10 14:57:52,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 985 transitions, 43362 flow [2021-06-10 14:57:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:57:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:57:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:57:52,904 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:57:52,904 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:57:52,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:57:52,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:52,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:57:52,904 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) [2021-06-10 14:57:52,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:52,905 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:52,905 INFO L185 Difference]: Start difference. First operand has 430 places, 980 transitions, 41414 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:57:52,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 985 transitions, 43362 flow [2021-06-10 14:57:56,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 985 transitions, 42433 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:56,825 INFO L241 Difference]: Finished difference. Result has 433 places, 979 transitions, 41401 flow [2021-06-10 14:57:56,825 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40495, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41401, PETRI_PLACES=433, PETRI_TRANSITIONS=979} [2021-06-10 14:57:56,825 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 382 predicate places. [2021-06-10 14:57:56,825 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 979 transitions, 41401 flow [2021-06-10 14:57:56,826 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) [2021-06-10 14:57:56,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:56,826 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:56,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-10 14:57:56,826 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]=== [2021-06-10 14:57:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash -537909315, now seen corresponding path program 69 times [2021-06-10 14:57:56,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:56,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076446275] [2021-06-10 14:57:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:56,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:56,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:56,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:57:56,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:57:56,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:56,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:56,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:56,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:56,880 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:56,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:56,898 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:57:56,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:57:56,920 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:57:56,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:57:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:56,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076446275] [2021-06-10 14:57:56,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:56,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:57:56,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172165488] [2021-06-10 14:57:56,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:57:56,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:56,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:57:56,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:57:56,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:57:56,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 979 transitions, 41401 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) [2021-06-10 14:57:56,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:56,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:57:56,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:02,476 INFO L129 PetriNetUnfolder]: 487/13832 cut-off events. [2021-06-10 14:58:02,476 INFO L130 PetriNetUnfolder]: For 451783/455808 co-relation queries the response was YES. [2021-06-10 14:58:02,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85309 conditions, 13832 events. 487/13832 cut-off events. For 451783/455808 co-relation queries the response was YES. Maximal size of possible extension queue 2325. Compared 260389 event pairs, 487 based on Foata normal form. 45/13337 useless extension candidates. Maximal degree in co-relation 85162. Up to 1980 conditions per place. [2021-06-10 14:58:02,589 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 661 selfloop transitions, 412 changer transitions 1/1095 dead transitions. [2021-06-10 14:58:02,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1095 transitions, 48479 flow [2021-06-10 14:58:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:58:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:58:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:58:02,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:58:02,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:58:02,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:58:02,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:02,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:58:02,591 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) [2021-06-10 14:58:02,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:02,592 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:02,592 INFO L185 Difference]: Start difference. First operand has 433 places, 979 transitions, 41401 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:58:02,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1095 transitions, 48479 flow [2021-06-10 14:58:06,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1095 transitions, 47475 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:58:06,732 INFO L241 Difference]: Finished difference. Result has 439 places, 994 transitions, 42141 flow [2021-06-10 14:58:06,733 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=40445, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42141, PETRI_PLACES=439, PETRI_TRANSITIONS=994} [2021-06-10 14:58:06,733 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 388 predicate places. [2021-06-10 14:58:06,733 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 994 transitions, 42141 flow [2021-06-10 14:58:06,733 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) [2021-06-10 14:58:06,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:06,733 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:06,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-10 14:58:06,733 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]=== [2021-06-10 14:58:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash 498903389, now seen corresponding path program 70 times [2021-06-10 14:58:06,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:06,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112985111] [2021-06-10 14:58:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:06,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:06,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:06,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:06,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:06,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:58:06,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:58:06,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:06,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:06,764 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:06,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:06,790 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:06,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:06,807 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:58:06,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:58:06,831 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:58:06,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:58:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:06,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112985111] [2021-06-10 14:58:06,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:06,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:58:06,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510586876] [2021-06-10 14:58:06,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:58:06,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:58:06,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:58:06,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:58:06,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 994 transitions, 42141 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) [2021-06-10 14:58:06,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:06,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:58:06,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:12,462 INFO L129 PetriNetUnfolder]: 487/13840 cut-off events. [2021-06-10 14:58:12,462 INFO L130 PetriNetUnfolder]: For 463365/467396 co-relation queries the response was YES. [2021-06-10 14:58:12,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85652 conditions, 13840 events. 487/13840 cut-off events. For 463365/467396 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 260683 event pairs, 463 based on Foata normal form. 45/13339 useless extension candidates. Maximal degree in co-relation 85501. Up to 1873 conditions per place. [2021-06-10 14:58:12,579 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 592 selfloop transitions, 453 changer transitions 1/1067 dead transitions. [2021-06-10 14:58:12,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1067 transitions, 47229 flow [2021-06-10 14:58:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:58:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:58:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:58:12,580 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:58:12,580 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:58:12,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:58:12,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:12,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:58:12,581 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) [2021-06-10 14:58:12,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:12,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:12,581 INFO L185 Difference]: Start difference. First operand has 439 places, 994 transitions, 42141 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:58:12,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1067 transitions, 47229 flow [2021-06-10 14:58:16,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1067 transitions, 46517 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-06-10 14:58:17,021 INFO L241 Difference]: Finished difference. Result has 447 places, 1031 transitions, 44298 flow [2021-06-10 14:58:17,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=41473, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44298, PETRI_PLACES=447, PETRI_TRANSITIONS=1031} [2021-06-10 14:58:17,022 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 396 predicate places. [2021-06-10 14:58:17,022 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 1031 transitions, 44298 flow [2021-06-10 14:58:17,023 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) [2021-06-10 14:58:17,023 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:17,023 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:17,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-10 14:58:17,023 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]=== [2021-06-10 14:58:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:17,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1764040181, now seen corresponding path program 71 times [2021-06-10 14:58:17,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:17,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001819723] [2021-06-10 14:58:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:17,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:17,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:17,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:17,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:17,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:58:17,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:58:17,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:17,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:17,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:17,070 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:58:17,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:17,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:58:17,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:58:17,124 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:58:17,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:58:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:17,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001819723] [2021-06-10 14:58:17,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:17,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:58:17,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496264060] [2021-06-10 14:58:17,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:58:17,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:17,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:58:17,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:58:17,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:58:17,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1031 transitions, 44298 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) [2021-06-10 14:58:17,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:17,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:58:17,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:23,138 INFO L129 PetriNetUnfolder]: 463/14122 cut-off events. [2021-06-10 14:58:23,138 INFO L130 PetriNetUnfolder]: For 484527/488552 co-relation queries the response was YES. [2021-06-10 14:58:23,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87905 conditions, 14122 events. 463/14122 cut-off events. For 484527/488552 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 267458 event pairs, 463 based on Foata normal form. 45/13609 useless extension candidates. Maximal degree in co-relation 87750. Up to 1963 conditions per place. [2021-06-10 14:58:23,267 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 663 selfloop transitions, 428 changer transitions 2/1114 dead transitions. [2021-06-10 14:58:23,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1114 transitions, 50098 flow [2021-06-10 14:58:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:58:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:58:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:58:23,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:58:23,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:58:23,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:58:23,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:23,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:58:23,269 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) [2021-06-10 14:58:23,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:23,270 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:23,278 INFO L185 Difference]: Start difference. First operand has 447 places, 1031 transitions, 44298 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:58:23,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1114 transitions, 50098 flow [2021-06-10 14:58:28,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1114 transitions, 49293 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-06-10 14:58:28,277 INFO L241 Difference]: Finished difference. Result has 455 places, 1058 transitions, 45852 flow [2021-06-10 14:58:28,278 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=43539, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45852, PETRI_PLACES=455, PETRI_TRANSITIONS=1058} [2021-06-10 14:58:28,278 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 404 predicate places. [2021-06-10 14:58:28,278 INFO L480 AbstractCegarLoop]: Abstraction has has 455 places, 1058 transitions, 45852 flow [2021-06-10 14:58:28,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:28,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:28,279 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:28,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-10 14:58:28,279 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]=== [2021-06-10 14:58:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:28,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1638020797, now seen corresponding path program 72 times [2021-06-10 14:58:28,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:28,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846340270] [2021-06-10 14:58:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:28,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:28,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:28,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:28,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:28,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:58:28,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:58:28,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:28,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:28,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:28,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:28,350 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:58:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:28,386 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:58:28,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:58:28,410 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:58:28,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:58:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:28,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846340270] [2021-06-10 14:58:28,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:28,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:58:28,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049462044] [2021-06-10 14:58:28,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:58:28,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:28,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:58:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:58:28,434 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:58:28,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1058 transitions, 45852 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) [2021-06-10 14:58:28,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:28,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:58:28,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:34,673 INFO L129 PetriNetUnfolder]: 463/14112 cut-off events. [2021-06-10 14:58:34,673 INFO L130 PetriNetUnfolder]: For 495349/499402 co-relation queries the response was YES. [2021-06-10 14:58:34,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88636 conditions, 14112 events. 463/14112 cut-off events. For 495349/499402 co-relation queries the response was YES. Maximal size of possible extension queue 2386. Compared 267209 event pairs, 463 based on Foata normal form. 45/13599 useless extension candidates. Maximal degree in co-relation 88477. Up to 1873 conditions per place. [2021-06-10 14:58:34,800 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 596 selfloop transitions, 473 changer transitions 2/1092 dead transitions. [2021-06-10 14:58:34,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1092 transitions, 49301 flow [2021-06-10 14:58:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:58:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:58:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:58:34,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:58:34,801 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:58:34,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:58:34,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:34,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:58:34,801 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) [2021-06-10 14:58:34,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:34,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:34,802 INFO L185 Difference]: Start difference. First operand has 455 places, 1058 transitions, 45852 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:58:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1092 transitions, 49301 flow [2021-06-10 14:58:39,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1092 transitions, 48860 flow, removed 23 selfloop flow, removed 6 redundant places. [2021-06-10 14:58:39,643 INFO L241 Difference]: Finished difference. Result has 459 places, 1067 transitions, 46991 flow [2021-06-10 14:58:39,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=45421, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46991, PETRI_PLACES=459, PETRI_TRANSITIONS=1067} [2021-06-10 14:58:39,643 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 408 predicate places. [2021-06-10 14:58:39,643 INFO L480 AbstractCegarLoop]: Abstraction has has 459 places, 1067 transitions, 46991 flow [2021-06-10 14:58:39,644 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) [2021-06-10 14:58:39,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:39,644 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:39,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-10 14:58:39,644 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]=== [2021-06-10 14:58:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:39,644 INFO L82 PathProgramCache]: Analyzing trace with hash 786331829, now seen corresponding path program 73 times [2021-06-10 14:58:39,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:39,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594792908] [2021-06-10 14:58:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:39,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:39,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:39,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:39,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:39,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:58:39,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:58:39,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:39,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:39,675 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:39,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:39,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:39,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:39,714 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:58:39,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:58:39,737 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:58:39,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:58:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:39,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594792908] [2021-06-10 14:58:39,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:39,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:58:39,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585911495] [2021-06-10 14:58:39,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:58:39,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:58:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:58:39,798 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:58:39,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1067 transitions, 46991 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) [2021-06-10 14:58:39,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:39,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:58:39,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:45,761 INFO L129 PetriNetUnfolder]: 463/14102 cut-off events. [2021-06-10 14:58:45,761 INFO L130 PetriNetUnfolder]: For 511387/515308 co-relation queries the response was YES. [2021-06-10 14:58:45,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89841 conditions, 14102 events. 463/14102 cut-off events. For 511387/515308 co-relation queries the response was YES. Maximal size of possible extension queue 2384. Compared 267033 event pairs, 463 based on Foata normal form. 45/13589 useless extension candidates. Maximal degree in co-relation 89683. Up to 1873 conditions per place. [2021-06-10 14:58:45,892 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 600 selfloop transitions, 473 changer transitions 2/1096 dead transitions. [2021-06-10 14:58:45,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1096 transitions, 50228 flow [2021-06-10 14:58:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:58:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:58:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:58:45,893 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:58:45,893 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:58:45,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:58:45,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:45,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:58:45,894 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) [2021-06-10 14:58:45,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:45,894 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:45,894 INFO L185 Difference]: Start difference. First operand has 459 places, 1067 transitions, 46991 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:58:45,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1096 transitions, 50228 flow [2021-06-10 14:58:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1096 transitions, 49736 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-06-10 14:58:50,789 INFO L241 Difference]: Finished difference. Result has 464 places, 1069 transitions, 47555 flow [2021-06-10 14:58:50,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=46512, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47555, PETRI_PLACES=464, PETRI_TRANSITIONS=1069} [2021-06-10 14:58:50,790 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 413 predicate places. [2021-06-10 14:58:50,790 INFO L480 AbstractCegarLoop]: Abstraction has has 464 places, 1069 transitions, 47555 flow [2021-06-10 14:58:50,790 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) [2021-06-10 14:58:50,790 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:50,790 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:50,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-10 14:58:50,790 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]=== [2021-06-10 14:58:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1947670393, now seen corresponding path program 74 times [2021-06-10 14:58:50,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:50,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418200738] [2021-06-10 14:58:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:50,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:50,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:50,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:50,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:50,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:58:50,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:58:50,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:50,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:50,821 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:50,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:50,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:58:50,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:58:50,871 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 14:58:50,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 14:58:50,895 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:58:50,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:58:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:50,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418200738] [2021-06-10 14:58:50,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:50,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:58:50,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492523447] [2021-06-10 14:58:50,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:58:50,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:50,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:58:50,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:58:50,917 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:58:50,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 1069 transitions, 47555 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) [2021-06-10 14:58:50,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:50,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:58:50,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:56,934 INFO L129 PetriNetUnfolder]: 463/14092 cut-off events. [2021-06-10 14:58:56,934 INFO L130 PetriNetUnfolder]: For 515773/519826 co-relation queries the response was YES. [2021-06-10 14:58:57,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90679 conditions, 14092 events. 463/14092 cut-off events. For 515773/519826 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 266734 event pairs, 463 based on Foata normal form. 45/13579 useless extension candidates. Maximal degree in co-relation 90521. Up to 1873 conditions per place. [2021-06-10 14:58:57,078 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 586 selfloop transitions, 485 changer transitions 2/1094 dead transitions. [2021-06-10 14:58:57,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1094 transitions, 50615 flow [2021-06-10 14:58:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:58:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:58:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:58:57,079 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:58:57,079 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:58:57,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:58:57,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:57,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:58:57,080 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) [2021-06-10 14:58:57,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:57,080 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:57,080 INFO L185 Difference]: Start difference. First operand has 464 places, 1069 transitions, 47555 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:58:57,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1094 transitions, 50615 flow [2021-06-10 14:59:01,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1094 transitions, 49535 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-10 14:59:02,001 INFO L241 Difference]: Finished difference. Result has 467 places, 1078 transitions, 48005 flow [2021-06-10 14:59:02,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=46488, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48005, PETRI_PLACES=467, PETRI_TRANSITIONS=1078} [2021-06-10 14:59:02,002 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 416 predicate places. [2021-06-10 14:59:02,002 INFO L480 AbstractCegarLoop]: Abstraction has has 467 places, 1078 transitions, 48005 flow [2021-06-10 14:59:02,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:02,002 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:02,002 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:02,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-10 14:59:02,002 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]=== [2021-06-10 14:59:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:02,002 INFO L82 PathProgramCache]: Analyzing trace with hash 997978321, now seen corresponding path program 75 times [2021-06-10 14:59:02,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:02,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34944093] [2021-06-10 14:59:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:02,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:02,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:02,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:02,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:02,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:59:02,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:59:02,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:02,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:02,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:02,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:02,045 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:02,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:02,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:59:02,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:59:02,085 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:59:02,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:59:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:02,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34944093] [2021-06-10 14:59:02,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:02,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:59:02,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532824546] [2021-06-10 14:59:02,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:59:02,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:02,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:59:02,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:59:02,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:59:02,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1078 transitions, 48005 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) [2021-06-10 14:59:02,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:02,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:59:02,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:08,253 INFO L129 PetriNetUnfolder]: 463/14082 cut-off events. [2021-06-10 14:59:08,253 INFO L130 PetriNetUnfolder]: For 518733/522786 co-relation queries the response was YES. [2021-06-10 14:59:08,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90563 conditions, 14082 events. 463/14082 cut-off events. For 518733/522786 co-relation queries the response was YES. Maximal size of possible extension queue 2380. Compared 266529 event pairs, 463 based on Foata normal form. 45/13569 useless extension candidates. Maximal degree in co-relation 90403. Up to 1873 conditions per place. [2021-06-10 14:59:08,390 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 613 selfloop transitions, 469 changer transitions 2/1105 dead transitions. [2021-06-10 14:59:08,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1105 transitions, 51172 flow [2021-06-10 14:59:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:59:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:59:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:59:08,391 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:59:08,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:59:08,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:59:08,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:08,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:59:08,391 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) [2021-06-10 14:59:08,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:08,392 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:08,392 INFO L185 Difference]: Start difference. First operand has 467 places, 1078 transitions, 48005 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:59:08,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1105 transitions, 51172 flow [2021-06-10 14:59:13,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1105 transitions, 50185 flow, removed 20 selfloop flow, removed 6 redundant places. [2021-06-10 14:59:13,476 INFO L241 Difference]: Finished difference. Result has 471 places, 1086 transitions, 48441 flow [2021-06-10 14:59:13,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47042, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48441, PETRI_PLACES=471, PETRI_TRANSITIONS=1086} [2021-06-10 14:59:13,477 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 420 predicate places. [2021-06-10 14:59:13,477 INFO L480 AbstractCegarLoop]: Abstraction has has 471 places, 1086 transitions, 48441 flow [2021-06-10 14:59:13,477 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) [2021-06-10 14:59:13,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:13,477 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:13,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-10 14:59:13,477 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]=== [2021-06-10 14:59:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:13,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1115831239, now seen corresponding path program 76 times [2021-06-10 14:59:13,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:13,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585187084] [2021-06-10 14:59:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:13,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:13,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:13,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:13,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:13,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:59:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:59:13,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:13,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:13,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:13,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:13,520 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:59:13,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:59:13,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:59:13,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:59:13,560 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:59:13,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:59:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:13,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585187084] [2021-06-10 14:59:13,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:13,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:59:13,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762343171] [2021-06-10 14:59:13,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:59:13,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:13,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:59:13,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:59:13,582 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:59:13,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1086 transitions, 48441 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) [2021-06-10 14:59:13,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:13,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:59:13,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:19,684 INFO L129 PetriNetUnfolder]: 463/14072 cut-off events. [2021-06-10 14:59:19,684 INFO L130 PetriNetUnfolder]: For 522464/526517 co-relation queries the response was YES. [2021-06-10 14:59:19,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90594 conditions, 14072 events. 463/14072 cut-off events. For 522464/526517 co-relation queries the response was YES. Maximal size of possible extension queue 2378. Compared 266362 event pairs, 463 based on Foata normal form. 45/13559 useless extension candidates. Maximal degree in co-relation 90432. Up to 1873 conditions per place. [2021-06-10 14:59:19,825 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 609 selfloop transitions, 471 changer transitions 2/1103 dead transitions. [2021-06-10 14:59:19,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1103 transitions, 51147 flow [2021-06-10 14:59:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:59:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:59:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:59:19,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:59:19,826 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:59:19,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:59:19,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:19,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:59:19,827 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) [2021-06-10 14:59:19,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:19,827 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:19,827 INFO L185 Difference]: Start difference. First operand has 471 places, 1086 transitions, 48441 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:59:19,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1103 transitions, 51147 flow [2021-06-10 14:59:24,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 1103 transitions, 50285 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:24,941 INFO L241 Difference]: Finished difference. Result has 475 places, 1096 transitions, 49028 flow [2021-06-10 14:59:24,941 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47589, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49028, PETRI_PLACES=475, PETRI_TRANSITIONS=1096} [2021-06-10 14:59:24,942 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 424 predicate places. [2021-06-10 14:59:24,942 INFO L480 AbstractCegarLoop]: Abstraction has has 475 places, 1096 transitions, 49028 flow [2021-06-10 14:59:24,942 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) [2021-06-10 14:59:24,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:24,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:24,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-10 14:59:24,942 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]=== [2021-06-10 14:59:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:24,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2137769039, now seen corresponding path program 77 times [2021-06-10 14:59:24,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:24,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938227053] [2021-06-10 14:59:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:24,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:24,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:24,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:24,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:24,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:59:24,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:59:24,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:24,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:24,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:24,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:24,983 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:59:24,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:59:25,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:59:25,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:59:25,022 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:59:25,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:59:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:25,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938227053] [2021-06-10 14:59:25,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:25,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:59:25,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121936071] [2021-06-10 14:59:25,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:59:25,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:25,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:59:25,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:59:25,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:59:25,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1096 transitions, 49028 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) [2021-06-10 14:59:25,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:25,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:59:25,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:31,386 INFO L129 PetriNetUnfolder]: 463/14063 cut-off events. [2021-06-10 14:59:31,386 INFO L130 PetriNetUnfolder]: For 525200/529253 co-relation queries the response was YES. [2021-06-10 14:59:31,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90737 conditions, 14063 events. 463/14063 cut-off events. For 525200/529253 co-relation queries the response was YES. Maximal size of possible extension queue 2376. Compared 266163 event pairs, 463 based on Foata normal form. 45/13551 useless extension candidates. Maximal degree in co-relation 90574. Up to 1873 conditions per place. [2021-06-10 14:59:31,522 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 609 selfloop transitions, 468 changer transitions 3/1101 dead transitions. [2021-06-10 14:59:31,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1101 transitions, 51208 flow [2021-06-10 14:59:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:59:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:59:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:59:31,523 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:59:31,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:59:31,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:59:31,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:31,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:59:31,524 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) [2021-06-10 14:59:31,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:31,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:31,525 INFO L185 Difference]: Start difference. First operand has 475 places, 1096 transitions, 49028 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:59:31,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1101 transitions, 51208 flow [2021-06-10 14:59:36,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1101 transitions, 50310 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:36,727 INFO L241 Difference]: Finished difference. Result has 478 places, 1093 transitions, 48914 flow [2021-06-10 14:59:36,728 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48140, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48914, PETRI_PLACES=478, PETRI_TRANSITIONS=1093} [2021-06-10 14:59:36,728 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 427 predicate places. [2021-06-10 14:59:36,728 INFO L480 AbstractCegarLoop]: Abstraction has has 478 places, 1093 transitions, 48914 flow [2021-06-10 14:59:36,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:36,728 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:36,728 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:36,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-10 14:59:36,728 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]=== [2021-06-10 14:59:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash 111630085, now seen corresponding path program 78 times [2021-06-10 14:59:36,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:36,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571576257] [2021-06-10 14:59:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:36,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:36,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:36,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:36,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:36,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:59:36,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:59:36,766 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:36,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:36,776 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:36,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:36,790 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:59:36,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:59:36,807 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:59:36,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:59:36,829 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:59:36,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:59:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:36,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571576257] [2021-06-10 14:59:36,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:36,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:59:36,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032342849] [2021-06-10 14:59:36,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:59:36,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:36,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:59:36,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:59:36,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:59:36,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1093 transitions, 48914 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) [2021-06-10 14:59:36,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:36,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:59:36,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:43,090 INFO L129 PetriNetUnfolder]: 463/14051 cut-off events. [2021-06-10 14:59:43,091 INFO L130 PetriNetUnfolder]: For 523966/528019 co-relation queries the response was YES. [2021-06-10 14:59:43,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90773 conditions, 14051 events. 463/14051 cut-off events. For 523966/528019 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 265830 event pairs, 463 based on Foata normal form. 45/13539 useless extension candidates. Maximal degree in co-relation 90610. Up to 1873 conditions per place. [2021-06-10 14:59:43,382 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 543 selfloop transitions, 532 changer transitions 2/1098 dead transitions. [2021-06-10 14:59:43,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1098 transitions, 51088 flow [2021-06-10 14:59:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:59:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:59:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:59:43,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:59:43,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:59:43,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:59:43,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:43,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:59:43,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:43,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:43,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:43,384 INFO L185 Difference]: Start difference. First operand has 478 places, 1093 transitions, 48914 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:59:43,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 1098 transitions, 51088 flow [2021-06-10 14:59:48,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1098 transitions, 50170 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:59:48,463 INFO L241 Difference]: Finished difference. Result has 480 places, 1091 transitions, 48948 flow [2021-06-10 14:59:48,464 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48006, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48948, PETRI_PLACES=480, PETRI_TRANSITIONS=1091} [2021-06-10 14:59:48,464 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 429 predicate places. [2021-06-10 14:59:48,464 INFO L480 AbstractCegarLoop]: Abstraction has has 480 places, 1091 transitions, 48948 flow [2021-06-10 14:59:48,464 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) [2021-06-10 14:59:48,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:48,464 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:48,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-10 14:59:48,464 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]=== [2021-06-10 14:59:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 751102173, now seen corresponding path program 79 times [2021-06-10 14:59:48,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:48,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508760095] [2021-06-10 14:59:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:48,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:48,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:48,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:48,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:48,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:59:48,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:59:48,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:48,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:48,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:48,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:48,508 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:59:48,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:48,539 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:59:48,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:59:48,565 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 14:59:48,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:59:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:48,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508760095] [2021-06-10 14:59:48,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:48,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 14:59:48,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886759710] [2021-06-10 14:59:48,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 14:59:48,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:48,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 14:59:48,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 14:59:48,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 14:59:48,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 1091 transitions, 48948 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) [2021-06-10 14:59:48,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:48,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 14:59:48,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:54,924 INFO L129 PetriNetUnfolder]: 463/14042 cut-off events. [2021-06-10 14:59:54,924 INFO L130 PetriNetUnfolder]: For 523254/527302 co-relation queries the response was YES. [2021-06-10 14:59:55,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90741 conditions, 14042 events. 463/14042 cut-off events. For 523254/527302 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 265644 event pairs, 463 based on Foata normal form. 43/13529 useless extension candidates. Maximal degree in co-relation 90578. Up to 1873 conditions per place. [2021-06-10 14:59:55,072 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 608 selfloop transitions, 465 changer transitions 2/1096 dead transitions. [2021-06-10 14:59:55,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1096 transitions, 51118 flow [2021-06-10 14:59:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 14:59:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 14:59:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 14:59:55,073 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 14:59:55,073 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 14:59:55,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 14:59:55,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:55,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 14:59:55,074 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) [2021-06-10 14:59:55,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:55,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:55,077 INFO L185 Difference]: Start difference. First operand has 480 places, 1091 transitions, 48948 flow. Second operand 9 states and 674 transitions. [2021-06-10 14:59:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1096 transitions, 51118 flow [2021-06-10 15:00:00,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1096 transitions, 50155 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:00,627 INFO L241 Difference]: Finished difference. Result has 483 places, 1089 transitions, 48810 flow [2021-06-10 15:00:00,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47995, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48810, PETRI_PLACES=483, PETRI_TRANSITIONS=1089} [2021-06-10 15:00:00,628 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 432 predicate places. [2021-06-10 15:00:00,628 INFO L480 AbstractCegarLoop]: Abstraction has has 483 places, 1089 transitions, 48810 flow [2021-06-10 15:00:00,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:00,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:00,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:00,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-10 15:00:00,629 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]=== [2021-06-10 15:00:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:00,629 INFO L82 PathProgramCache]: Analyzing trace with hash 309851821, now seen corresponding path program 80 times [2021-06-10 15:00:00,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:00,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782682285] [2021-06-10 15:00:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:00,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:00,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:00,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:00:00,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:00:00,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:00,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:00,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:00,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:00,679 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:00,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:00,698 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:00:00,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:00:00,721 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:00:00,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:00:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:00,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782682285] [2021-06-10 15:00:00,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:00,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:00:00,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362680718] [2021-06-10 15:00:00,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:00:00,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:00,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:00:00,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:00:00,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:00:00,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1089 transitions, 48810 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) [2021-06-10 15:00:00,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:00,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:00:00,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:07,543 INFO L129 PetriNetUnfolder]: 463/14032 cut-off events. [2021-06-10 15:00:07,543 INFO L130 PetriNetUnfolder]: For 521695/525748 co-relation queries the response was YES. [2021-06-10 15:00:07,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90776 conditions, 14032 events. 463/14032 cut-off events. For 521695/525748 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 265374 event pairs, 463 based on Foata normal form. 45/13521 useless extension candidates. Maximal degree in co-relation 90613. Up to 1873 conditions per place. [2021-06-10 15:00:07,716 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 609 selfloop transitions, 463 changer transitions 1/1094 dead transitions. [2021-06-10 15:00:07,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1094 transitions, 50976 flow [2021-06-10 15:00:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:00:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:00:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:00:07,719 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:00:07,719 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:00:07,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:00:07,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:07,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:00:07,719 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) [2021-06-10 15:00:07,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:07,720 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:07,720 INFO L185 Difference]: Start difference. First operand has 483 places, 1089 transitions, 48810 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:00:07,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1094 transitions, 50976 flow [2021-06-10 15:00:13,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 1094 transitions, 50275 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 15:00:13,336 INFO L241 Difference]: Finished difference. Result has 487 places, 1088 transitions, 48990 flow [2021-06-10 15:00:13,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48119, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48990, PETRI_PLACES=487, PETRI_TRANSITIONS=1088} [2021-06-10 15:00:13,337 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 436 predicate places. [2021-06-10 15:00:13,337 INFO L480 AbstractCegarLoop]: Abstraction has has 487 places, 1088 transitions, 48990 flow [2021-06-10 15:00:13,337 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) [2021-06-10 15:00:13,337 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:13,337 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:13,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-10 15:00:13,337 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]=== [2021-06-10 15:00:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:13,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1204657827, now seen corresponding path program 81 times [2021-06-10 15:00:13,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:13,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900340137] [2021-06-10 15:00:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:13,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:13,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:13,361 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:00:13,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:00:13,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:13,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:13,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:13,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:13,397 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:00:13,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:00:13,419 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:00:13,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:00:13,445 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:00:13,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:00:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:13,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900340137] [2021-06-10 15:00:13,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:13,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:00:13,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188566767] [2021-06-10 15:00:13,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:00:13,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:13,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:00:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:00:13,472 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:00:13,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1088 transitions, 48990 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) [2021-06-10 15:00:13,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:13,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:00:13,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:20,067 INFO L129 PetriNetUnfolder]: 463/14024 cut-off events. [2021-06-10 15:00:20,067 INFO L130 PetriNetUnfolder]: For 523134/527187 co-relation queries the response was YES. [2021-06-10 15:00:20,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91318 conditions, 14024 events. 463/14024 cut-off events. For 523134/527187 co-relation queries the response was YES. Maximal size of possible extension queue 2368. Compared 265214 event pairs, 463 based on Foata normal form. 45/13513 useless extension candidates. Maximal degree in co-relation 91155. Up to 1873 conditions per place. [2021-06-10 15:00:20,200 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 521 selfloop transitions, 549 changer transitions 2/1093 dead transitions. [2021-06-10 15:00:20,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1093 transitions, 51154 flow [2021-06-10 15:00:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:00:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:00:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:00:20,202 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:00:20,202 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:00:20,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:00:20,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:20,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:00:20,202 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) [2021-06-10 15:00:20,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:20,203 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:20,203 INFO L185 Difference]: Start difference. First operand has 487 places, 1088 transitions, 48990 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:00:20,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1093 transitions, 51154 flow [2021-06-10 15:00:25,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1093 transitions, 50234 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-10 15:00:25,476 INFO L241 Difference]: Finished difference. Result has 489 places, 1086 transitions, 49054 flow [2021-06-10 15:00:25,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48080, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49054, PETRI_PLACES=489, PETRI_TRANSITIONS=1086} [2021-06-10 15:00:25,477 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 438 predicate places. [2021-06-10 15:00:25,477 INFO L480 AbstractCegarLoop]: Abstraction has has 489 places, 1086 transitions, 49054 flow [2021-06-10 15:00:25,477 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) [2021-06-10 15:00:25,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:25,477 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:25,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-10 15:00:25,477 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]=== [2021-06-10 15:00:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash -908775367, now seen corresponding path program 82 times [2021-06-10 15:00:25,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:25,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779547284] [2021-06-10 15:00:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:25,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:25,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:25,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:25,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:25,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:00:25,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:00:25,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:25,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:25,509 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:25,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:25,523 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:00:25,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:00:25,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:00:25,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:00:25,586 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:00:25,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:00:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:25,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779547284] [2021-06-10 15:00:25,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:25,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:00:25,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742164469] [2021-06-10 15:00:25,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:00:25,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:25,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:00:25,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:00:25,609 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:00:25,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1086 transitions, 49054 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) [2021-06-10 15:00:25,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:25,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:00:25,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:32,200 INFO L129 PetriNetUnfolder]: 463/14013 cut-off events. [2021-06-10 15:00:32,201 INFO L130 PetriNetUnfolder]: For 522087/526140 co-relation queries the response was YES. [2021-06-10 15:00:32,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91250 conditions, 14013 events. 463/14013 cut-off events. For 522087/526140 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 264896 event pairs, 463 based on Foata normal form. 45/13503 useless extension candidates. Maximal degree in co-relation 91087. Up to 1873 conditions per place. [2021-06-10 15:00:32,373 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 537 selfloop transitions, 532 changer transitions 1/1091 dead transitions. [2021-06-10 15:00:32,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1091 transitions, 51214 flow [2021-06-10 15:00:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:00:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:00:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:00:32,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:00:32,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:00:32,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:00:32,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:32,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:00:32,375 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) [2021-06-10 15:00:32,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:32,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:32,375 INFO L185 Difference]: Start difference. First operand has 489 places, 1086 transitions, 49054 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:00:32,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 1091 transitions, 51214 flow [2021-06-10 15:00:37,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1091 transitions, 50145 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 15:00:37,704 INFO L241 Difference]: Finished difference. Result has 491 places, 1085 transitions, 48989 flow [2021-06-10 15:00:37,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=47995, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48989, PETRI_PLACES=491, PETRI_TRANSITIONS=1085} [2021-06-10 15:00:37,704 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 440 predicate places. [2021-06-10 15:00:37,704 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 1085 transitions, 48989 flow [2021-06-10 15:00:37,705 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) [2021-06-10 15:00:37,705 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:37,705 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:37,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-10 15:00:37,705 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]=== [2021-06-10 15:00:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:37,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1254926683, now seen corresponding path program 83 times [2021-06-10 15:00:37,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:37,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455011658] [2021-06-10 15:00:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:37,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:37,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:37,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:37,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:37,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:00:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:00:37,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:37,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:37,736 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:00:37,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:00:37,759 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:00:37,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:00:37,789 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:00:37,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:00:37,812 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:00:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:00:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:37,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455011658] [2021-06-10 15:00:37,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:37,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:00:37,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312333496] [2021-06-10 15:00:37,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:00:37,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:37,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:00:37,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:00:37,835 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:00:37,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1085 transitions, 48989 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) [2021-06-10 15:00:37,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:37,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:00:37,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:44,235 INFO L129 PetriNetUnfolder]: 463/14006 cut-off events. [2021-06-10 15:00:44,235 INFO L130 PetriNetUnfolder]: For 521766/525819 co-relation queries the response was YES. [2021-06-10 15:00:44,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91233 conditions, 14006 events. 463/14006 cut-off events. For 521766/525819 co-relation queries the response was YES. Maximal size of possible extension queue 2365. Compared 264809 event pairs, 463 based on Foata normal form. 45/13497 useless extension candidates. Maximal degree in co-relation 91070. Up to 1873 conditions per place. [2021-06-10 15:00:44,387 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 595 selfloop transitions, 482 changer transitions 1/1099 dead transitions. [2021-06-10 15:00:44,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1099 transitions, 51570 flow [2021-06-10 15:00:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:00:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:00:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:00:44,388 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:00:44,388 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:00:44,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:00:44,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:44,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:00:44,389 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) [2021-06-10 15:00:44,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:44,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:44,389 INFO L185 Difference]: Start difference. First operand has 491 places, 1085 transitions, 48989 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:00:44,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1099 transitions, 51570 flow [2021-06-10 15:00:49,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 1099 transitions, 50628 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:49,883 INFO L241 Difference]: Finished difference. Result has 494 places, 1084 transitions, 48971 flow [2021-06-10 15:00:49,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48066, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=482, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48971, PETRI_PLACES=494, PETRI_TRANSITIONS=1084} [2021-06-10 15:00:49,884 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 443 predicate places. [2021-06-10 15:00:49,884 INFO L480 AbstractCegarLoop]: Abstraction has has 494 places, 1084 transitions, 48971 flow [2021-06-10 15:00:49,884 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) [2021-06-10 15:00:49,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:49,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:49,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-10 15:00:49,885 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]=== [2021-06-10 15:00:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:49,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1438053085, now seen corresponding path program 84 times [2021-06-10 15:00:49,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:49,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889066401] [2021-06-10 15:00:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:49,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:49,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:49,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:49,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:49,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:00:49,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:00:49,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:49,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:49,915 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:49,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:49,929 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:00:49,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:00:49,960 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:00:49,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:00:49,985 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:00:49,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:00:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:50,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889066401] [2021-06-10 15:00:50,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:50,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:00:50,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651457767] [2021-06-10 15:00:50,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:00:50,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:00:50,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:00:50,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:00:50,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1084 transitions, 48971 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) [2021-06-10 15:00:50,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:50,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:00:50,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:56,313 INFO L129 PetriNetUnfolder]: 463/13998 cut-off events. [2021-06-10 15:00:56,314 INFO L130 PetriNetUnfolder]: For 521431/525479 co-relation queries the response was YES. [2021-06-10 15:00:56,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91336 conditions, 13998 events. 463/13998 cut-off events. For 521431/525479 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 264517 event pairs, 463 based on Foata normal form. 43/13487 useless extension candidates. Maximal degree in co-relation 91173. Up to 1873 conditions per place. [2021-06-10 15:00:56,454 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 534 selfloop transitions, 531 changer transitions 3/1089 dead transitions. [2021-06-10 15:00:56,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1089 transitions, 51127 flow [2021-06-10 15:00:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:00:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:00:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:00:56,455 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:00:56,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:00:56,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:00:56,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:56,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:00:56,456 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) [2021-06-10 15:00:56,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:56,456 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:56,456 INFO L185 Difference]: Start difference. First operand has 494 places, 1084 transitions, 48971 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:00:56,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1089 transitions, 51127 flow [2021-06-10 15:01:01,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1089 transitions, 50177 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 15:01:01,841 INFO L241 Difference]: Finished difference. Result has 496 places, 1081 transitions, 48909 flow [2021-06-10 15:01:01,842 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48031, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48909, PETRI_PLACES=496, PETRI_TRANSITIONS=1081} [2021-06-10 15:01:01,842 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 445 predicate places. [2021-06-10 15:01:01,842 INFO L480 AbstractCegarLoop]: Abstraction has has 496 places, 1081 transitions, 48909 flow [2021-06-10 15:01:01,842 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) [2021-06-10 15:01:01,842 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:01,842 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:01,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-10 15:01:01,842 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]=== [2021-06-10 15:01:01,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:01,843 INFO L82 PathProgramCache]: Analyzing trace with hash -282705305, now seen corresponding path program 85 times [2021-06-10 15:01:01,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:01,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303303435] [2021-06-10 15:01:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:01,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:01,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:01,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:01,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:01,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:01:01,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:01:01,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:01,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:01,874 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:01,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:01,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:01:01,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:01:01,931 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:01:01,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:01:01,958 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:01:01,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:01:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:01,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303303435] [2021-06-10 15:01:01,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:01,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:01:01,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242285647] [2021-06-10 15:01:01,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:01:01,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:01,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:01:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:01:01,983 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:01:01,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1081 transitions, 48909 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) [2021-06-10 15:01:01,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:01,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:01:01,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:08,492 INFO L129 PetriNetUnfolder]: 463/13985 cut-off events. [2021-06-10 15:01:08,492 INFO L130 PetriNetUnfolder]: For 520231/524279 co-relation queries the response was YES. [2021-06-10 15:01:08,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91240 conditions, 13985 events. 463/13985 cut-off events. For 520231/524279 co-relation queries the response was YES. Maximal size of possible extension queue 2345. Compared 264420 event pairs, 463 based on Foata normal form. 43/13475 useless extension candidates. Maximal degree in co-relation 91077. Up to 1873 conditions per place. [2021-06-10 15:01:08,632 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 584 selfloop transitions, 488 changer transitions 2/1095 dead transitions. [2021-06-10 15:01:08,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1095 transitions, 51491 flow [2021-06-10 15:01:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:01:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:01:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:01:08,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:01:08,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:01:08,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:01:08,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:01:08,634 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) [2021-06-10 15:01:08,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:08,635 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:08,635 INFO L185 Difference]: Start difference. First operand has 496 places, 1081 transitions, 48909 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:01:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1095 transitions, 51491 flow [2021-06-10 15:01:14,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 1095 transitions, 50656 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:01:14,070 INFO L241 Difference]: Finished difference. Result has 500 places, 1088 transitions, 49458 flow [2021-06-10 15:01:14,071 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48093, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49458, PETRI_PLACES=500, PETRI_TRANSITIONS=1088} [2021-06-10 15:01:14,071 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 449 predicate places. [2021-06-10 15:01:14,071 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 1088 transitions, 49458 flow [2021-06-10 15:01:14,071 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) [2021-06-10 15:01:14,071 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:14,071 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:14,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-10 15:01:14,071 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]=== [2021-06-10 15:01:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash -481012809, now seen corresponding path program 86 times [2021-06-10 15:01:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:14,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456982136] [2021-06-10 15:01:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:14,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:14,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:14,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:14,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:14,084 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:01:14,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:01:14,091 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:14,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:14,100 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:14,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:14,114 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:14,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:14,133 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:01:14,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:01:14,156 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:01:14,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:01:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:14,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456982136] [2021-06-10 15:01:14,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:14,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:01:14,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163213076] [2021-06-10 15:01:14,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:01:14,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:14,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:01:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:01:14,179 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:01:14,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1088 transitions, 49458 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) [2021-06-10 15:01:14,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:14,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:01:14,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:20,556 INFO L129 PetriNetUnfolder]: 463/13976 cut-off events. [2021-06-10 15:01:20,556 INFO L130 PetriNetUnfolder]: For 523946/527999 co-relation queries the response was YES. [2021-06-10 15:01:20,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91637 conditions, 13976 events. 463/13976 cut-off events. For 523946/527999 co-relation queries the response was YES. Maximal size of possible extension queue 2361. Compared 264119 event pairs, 463 based on Foata normal form. 45/13469 useless extension candidates. Maximal degree in co-relation 91473. Up to 1873 conditions per place. [2021-06-10 15:01:20,699 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 535 selfloop transitions, 534 changer transitions 3/1093 dead transitions. [2021-06-10 15:01:20,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1093 transitions, 51622 flow [2021-06-10 15:01:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:01:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:01:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:01:20,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:01:20,700 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:01:20,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:01:20,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:20,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:01:20,700 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) [2021-06-10 15:01:20,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:20,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:20,701 INFO L185 Difference]: Start difference. First operand has 500 places, 1088 transitions, 49458 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:01:20,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1093 transitions, 51622 flow [2021-06-10 15:01:26,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 1093 transitions, 50897 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:26,069 INFO L241 Difference]: Finished difference. Result has 504 places, 1085 transitions, 49627 flow [2021-06-10 15:01:26,070 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48743, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49627, PETRI_PLACES=504, PETRI_TRANSITIONS=1085} [2021-06-10 15:01:26,070 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 453 predicate places. [2021-06-10 15:01:26,070 INFO L480 AbstractCegarLoop]: Abstraction has has 504 places, 1085 transitions, 49627 flow [2021-06-10 15:01:26,070 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) [2021-06-10 15:01:26,070 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:26,070 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:26,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-10 15:01:26,070 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]=== [2021-06-10 15:01:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:26,071 INFO L82 PathProgramCache]: Analyzing trace with hash 600328361, now seen corresponding path program 87 times [2021-06-10 15:01:26,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:26,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175405414] [2021-06-10 15:01:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:26,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:26,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:26,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:26,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:26,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:01:26,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:01:26,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:26,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:26,109 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:26,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:26,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:01:26,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:01:26,172 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:01:26,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:01:26,196 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:01:26,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:01:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:26,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175405414] [2021-06-10 15:01:26,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:26,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:01:26,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889895042] [2021-06-10 15:01:26,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:01:26,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:26,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:01:26,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:01:26,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:01:26,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1085 transitions, 49627 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) [2021-06-10 15:01:26,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:26,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:01:26,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:32,722 INFO L129 PetriNetUnfolder]: 463/13962 cut-off events. [2021-06-10 15:01:32,722 INFO L130 PetriNetUnfolder]: For 524044/528097 co-relation queries the response was YES. [2021-06-10 15:01:32,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92075 conditions, 13962 events. 463/13962 cut-off events. For 524044/528097 co-relation queries the response was YES. Maximal size of possible extension queue 2358. Compared 263796 event pairs, 463 based on Foata normal form. 45/13456 useless extension candidates. Maximal degree in co-relation 91911. Up to 1873 conditions per place. [2021-06-10 15:01:32,865 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 583 selfloop transitions, 484 changer transitions 2/1090 dead transitions. [2021-06-10 15:01:32,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1090 transitions, 51785 flow [2021-06-10 15:01:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:01:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:01:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:01:32,866 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:01:32,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:01:32,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:01:32,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:32,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:01:32,867 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) [2021-06-10 15:01:32,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:32,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:32,868 INFO L185 Difference]: Start difference. First operand has 504 places, 1085 transitions, 49627 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:01:32,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1090 transitions, 51785 flow [2021-06-10 15:01:38,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1090 transitions, 50724 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 15:01:38,471 INFO L241 Difference]: Finished difference. Result has 506 places, 1083 transitions, 49423 flow [2021-06-10 15:01:38,472 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48576, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49423, PETRI_PLACES=506, PETRI_TRANSITIONS=1083} [2021-06-10 15:01:38,472 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 455 predicate places. [2021-06-10 15:01:38,472 INFO L480 AbstractCegarLoop]: Abstraction has has 506 places, 1083 transitions, 49423 flow [2021-06-10 15:01:38,472 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) [2021-06-10 15:01:38,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:38,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:38,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-10 15:01:38,473 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]=== [2021-06-10 15:01:38,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:38,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1708467195, now seen corresponding path program 88 times [2021-06-10 15:01:38,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:38,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603017160] [2021-06-10 15:01:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:38,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:38,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:38,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:38,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:38,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:01:38,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:01:38,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:38,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:38,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:38,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:38,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:01:38,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:01:38,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:01:38,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:01:38,573 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:01:38,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:01:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:38,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603017160] [2021-06-10 15:01:38,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:38,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:01:38,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574845551] [2021-06-10 15:01:38,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:01:38,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:38,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:01:38,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:01:38,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:01:38,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1083 transitions, 49423 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) [2021-06-10 15:01:38,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:38,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:01:38,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:45,140 INFO L129 PetriNetUnfolder]: 463/13950 cut-off events. [2021-06-10 15:01:45,140 INFO L130 PetriNetUnfolder]: For 523316/527369 co-relation queries the response was YES. [2021-06-10 15:01:45,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91976 conditions, 13950 events. 463/13950 cut-off events. For 523316/527369 co-relation queries the response was YES. Maximal size of possible extension queue 2355. Compared 263514 event pairs, 463 based on Foata normal form. 45/13445 useless extension candidates. Maximal degree in co-relation 91812. Up to 1873 conditions per place. [2021-06-10 15:01:45,264 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 557 selfloop transitions, 508 changer transitions 2/1088 dead transitions. [2021-06-10 15:01:45,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1088 transitions, 51577 flow [2021-06-10 15:01:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:01:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:01:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:01:45,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:01:45,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:01:45,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:01:45,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:45,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:01:45,266 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) [2021-06-10 15:01:45,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:45,266 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:45,266 INFO L185 Difference]: Start difference. First operand has 506 places, 1083 transitions, 49423 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:01:45,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1088 transitions, 51577 flow [2021-06-10 15:01:50,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1088 transitions, 50625 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 15:01:50,415 INFO L241 Difference]: Finished difference. Result has 508 places, 1081 transitions, 49368 flow [2021-06-10 15:01:50,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48481, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=508, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49368, PETRI_PLACES=508, PETRI_TRANSITIONS=1081} [2021-06-10 15:01:50,415 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 457 predicate places. [2021-06-10 15:01:50,415 INFO L480 AbstractCegarLoop]: Abstraction has has 508 places, 1081 transitions, 49368 flow [2021-06-10 15:01:50,416 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) [2021-06-10 15:01:50,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:50,416 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:50,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-10 15:01:50,416 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]=== [2021-06-10 15:01:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:50,416 INFO L82 PathProgramCache]: Analyzing trace with hash -328435381, now seen corresponding path program 89 times [2021-06-10 15:01:50,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:50,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292259815] [2021-06-10 15:01:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:50,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:50,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:50,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:50,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:50,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:01:50,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:01:50,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:50,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:50,457 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:50,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:50,481 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:01:50,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:01:50,509 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:01:50,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:01:50,532 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:01:50,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:01:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292259815] [2021-06-10 15:01:50,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:50,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:01:50,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070887450] [2021-06-10 15:01:50,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:01:50,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:50,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:01:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:01:50,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:01:50,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1081 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) [2021-06-10 15:01:50,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:50,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:01:50,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:56,826 INFO L129 PetriNetUnfolder]: 463/13938 cut-off events. [2021-06-10 15:01:56,826 INFO L130 PetriNetUnfolder]: For 522331/526384 co-relation queries the response was YES. [2021-06-10 15:01:56,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91926 conditions, 13938 events. 463/13938 cut-off events. For 522331/526384 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 263323 event pairs, 463 based on Foata normal form. 45/13434 useless extension candidates. Maximal degree in co-relation 91762. Up to 1873 conditions per place. [2021-06-10 15:01:56,952 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 564 selfloop transitions, 500 changer transitions 1/1086 dead transitions. [2021-06-10 15:01:56,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1086 transitions, 51518 flow [2021-06-10 15:01:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:01:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:01:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:01:56,954 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:01:56,954 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:01:56,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:01:56,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:56,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:01:56,954 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) [2021-06-10 15:01:56,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:56,955 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:56,955 INFO L185 Difference]: Start difference. First operand has 508 places, 1081 transitions, 49368 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:01:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1086 transitions, 51518 flow [2021-06-10 15:02:02,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1086 transitions, 50515 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:02,141 INFO L241 Difference]: Finished difference. Result has 510 places, 1080 transitions, 49305 flow [2021-06-10 15:02:02,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48375, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49305, PETRI_PLACES=510, PETRI_TRANSITIONS=1080} [2021-06-10 15:02:02,141 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 459 predicate places. [2021-06-10 15:02:02,142 INFO L480 AbstractCegarLoop]: Abstraction has has 510 places, 1080 transitions, 49305 flow [2021-06-10 15:02:02,142 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) [2021-06-10 15:02:02,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:02,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:02,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-10 15:02:02,142 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]=== [2021-06-10 15:02:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:02,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1083436617, now seen corresponding path program 90 times [2021-06-10 15:02:02,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:02,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108863154] [2021-06-10 15:02:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:02,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:02,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:02,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:02,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:02,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:02:02,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:02:02,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:02,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:02,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:02,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:02,242 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 15:02:02,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:02,279 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:02:02,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:02:02,306 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:02:02,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:02:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:02,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108863154] [2021-06-10 15:02:02,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:02,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:02:02,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847670854] [2021-06-10 15:02:02,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:02:02,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:02,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:02:02,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:02:02,351 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:02:02,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1080 transitions, 49305 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) [2021-06-10 15:02:02,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:02,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:02:02,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:08,809 INFO L129 PetriNetUnfolder]: 463/13930 cut-off events. [2021-06-10 15:02:08,809 INFO L130 PetriNetUnfolder]: For 521838/525886 co-relation queries the response was YES. [2021-06-10 15:02:08,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91900 conditions, 13930 events. 463/13930 cut-off events. For 521838/525886 co-relation queries the response was YES. Maximal size of possible extension queue 2334. Compared 262974 event pairs, 463 based on Foata normal form. 43/13424 useless extension candidates. Maximal degree in co-relation 91736. Up to 1873 conditions per place. [2021-06-10 15:02:08,948 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 566 selfloop transitions, 496 changer transitions 2/1085 dead transitions. [2021-06-10 15:02:08,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 1085 transitions, 51453 flow [2021-06-10 15:02:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:02:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:02:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:02:08,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:02:08,949 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:02:08,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:02:08,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:08,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:02:08,950 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) [2021-06-10 15:02:08,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:08,951 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:08,951 INFO L185 Difference]: Start difference. First operand has 510 places, 1080 transitions, 49305 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:02:08,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 1085 transitions, 51453 flow [2021-06-10 15:02:14,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1085 transitions, 50534 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:14,330 INFO L241 Difference]: Finished difference. Result has 512 places, 1078 transitions, 49254 flow [2021-06-10 15:02:14,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48396, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49254, PETRI_PLACES=512, PETRI_TRANSITIONS=1078} [2021-06-10 15:02:14,330 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 461 predicate places. [2021-06-10 15:02:14,331 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 1078 transitions, 49254 flow [2021-06-10 15:02:14,331 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) [2021-06-10 15:02:14,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:14,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:14,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-10 15:02:14,331 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]=== [2021-06-10 15:02:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1275734241, now seen corresponding path program 91 times [2021-06-10 15:02:14,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:14,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011254574] [2021-06-10 15:02:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:14,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:14,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:14,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:14,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:14,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:02:14,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:02:14,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:14,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:14,362 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:14,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:14,385 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 15:02:14,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:14,416 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:02:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:02:14,438 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:02:14,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:02:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:14,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011254574] [2021-06-10 15:02:14,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:14,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:02:14,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225637998] [2021-06-10 15:02:14,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:02:14,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:02:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:02:14,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:02:14,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 1078 transitions, 49254 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) [2021-06-10 15:02:14,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:14,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:02:14,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:20,998 INFO L129 PetriNetUnfolder]: 463/13920 cut-off events. [2021-06-10 15:02:20,999 INFO L130 PetriNetUnfolder]: For 520631/524684 co-relation queries the response was YES. [2021-06-10 15:02:21,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91981 conditions, 13920 events. 463/13920 cut-off events. For 520631/524684 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 262862 event pairs, 463 based on Foata normal form. 45/13416 useless extension candidates. Maximal degree in co-relation 91818. Up to 1873 conditions per place. [2021-06-10 15:02:21,121 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 565 selfloop transitions, 495 changer transitions 2/1083 dead transitions. [2021-06-10 15:02:21,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1083 transitions, 51398 flow [2021-06-10 15:02:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:02:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:02:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:02:21,122 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:02:21,122 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:02:21,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:02:21,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:21,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:02:21,123 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) [2021-06-10 15:02:21,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:21,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:21,123 INFO L185 Difference]: Start difference. First operand has 512 places, 1078 transitions, 49254 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:02:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1083 transitions, 51398 flow [2021-06-10 15:02:26,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1083 transitions, 50593 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:26,244 INFO L241 Difference]: Finished difference. Result has 515 places, 1076 transitions, 49321 flow [2021-06-10 15:02:26,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48459, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=495, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49321, PETRI_PLACES=515, PETRI_TRANSITIONS=1076} [2021-06-10 15:02:26,245 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 464 predicate places. [2021-06-10 15:02:26,245 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1076 transitions, 49321 flow [2021-06-10 15:02:26,245 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) [2021-06-10 15:02:26,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:26,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:26,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-10 15:02:26,245 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]=== [2021-06-10 15:02:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1806126053, now seen corresponding path program 92 times [2021-06-10 15:02:26,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:26,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769051687] [2021-06-10 15:02:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:26,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:26,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:26,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:26,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:26,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:02:26,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:02:26,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:26,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:26,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:26,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:26,301 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:02:26,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:02:26,329 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:02:26,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:02:26,353 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:02:26,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:02:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:26,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769051687] [2021-06-10 15:02:26,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:26,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:02:26,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292980539] [2021-06-10 15:02:26,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:02:26,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:26,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:02:26,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:02:26,375 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:02:26,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1076 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) [2021-06-10 15:02:26,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:26,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:02:26,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:32,574 INFO L129 PetriNetUnfolder]: 463/13910 cut-off events. [2021-06-10 15:02:32,574 INFO L130 PetriNetUnfolder]: For 517425/521478 co-relation queries the response was YES. [2021-06-10 15:02:32,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92439 conditions, 13910 events. 463/13910 cut-off events. For 517425/521478 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 262632 event pairs, 463 based on Foata normal form. 45/13406 useless extension candidates. Maximal degree in co-relation 92277. Up to 1873 conditions per place. [2021-06-10 15:02:32,700 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 560 selfloop transitions, 497 changer transitions 3/1081 dead transitions. [2021-06-10 15:02:32,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1081 transitions, 51461 flow [2021-06-10 15:02:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:02:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:02:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:02:32,701 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:02:32,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:02:32,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:02:32,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:32,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:02:32,702 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) [2021-06-10 15:02:32,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:32,702 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:32,702 INFO L185 Difference]: Start difference. First operand has 515 places, 1076 transitions, 49321 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:02:32,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1081 transitions, 51461 flow [2021-06-10 15:02:37,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1081 transitions, 50478 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:37,894 INFO L241 Difference]: Finished difference. Result has 517 places, 1073 transitions, 49161 flow [2021-06-10 15:02:37,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48348, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49161, PETRI_PLACES=517, PETRI_TRANSITIONS=1073} [2021-06-10 15:02:37,895 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 466 predicate places. [2021-06-10 15:02:37,895 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 1073 transitions, 49161 flow [2021-06-10 15:02:37,895 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) [2021-06-10 15:02:37,895 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:37,895 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:37,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-10 15:02:37,895 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]=== [2021-06-10 15:02:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:37,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1634790879, now seen corresponding path program 93 times [2021-06-10 15:02:37,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:37,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151707038] [2021-06-10 15:02:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:37,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:37,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:37,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:37,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:37,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:02:37,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:02:37,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:37,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:37,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:37,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:37,939 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:37,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:37,957 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:02:37,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:02:37,980 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:02:37,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:02:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:38,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151707038] [2021-06-10 15:02:38,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:38,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:02:38,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521441048] [2021-06-10 15:02:38,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:02:38,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:38,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:02:38,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:02:38,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:02:38,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1073 transitions, 49161 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) [2021-06-10 15:02:38,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:38,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:02:38,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:44,165 INFO L129 PetriNetUnfolder]: 463/13896 cut-off events. [2021-06-10 15:02:44,165 INFO L130 PetriNetUnfolder]: For 516226/520279 co-relation queries the response was YES. [2021-06-10 15:02:44,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92322 conditions, 13896 events. 463/13896 cut-off events. For 516226/520279 co-relation queries the response was YES. Maximal size of possible extension queue 2344. Compared 262353 event pairs, 463 based on Foata normal form. 45/13392 useless extension candidates. Maximal degree in co-relation 92160. Up to 2009 conditions per place. [2021-06-10 15:02:44,303 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 635 selfloop transitions, 491 changer transitions 2/1149 dead transitions. [2021-06-10 15:02:44,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1149 transitions, 54637 flow [2021-06-10 15:02:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:02:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:02:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:02:44,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:02:44,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:02:44,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:02:44,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:44,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:02:44,305 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) [2021-06-10 15:02:44,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:44,305 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:44,305 INFO L185 Difference]: Start difference. First operand has 517 places, 1073 transitions, 49161 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:02:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1149 transitions, 54637 flow [2021-06-10 15:02:49,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1149 transitions, 53652 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:49,369 INFO L241 Difference]: Finished difference. Result has 520 places, 1091 transitions, 50201 flow [2021-06-10 15:02:49,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=48186, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50201, PETRI_PLACES=520, PETRI_TRANSITIONS=1091} [2021-06-10 15:02:49,370 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 469 predicate places. [2021-06-10 15:02:49,370 INFO L480 AbstractCegarLoop]: Abstraction has has 520 places, 1091 transitions, 50201 flow [2021-06-10 15:02:49,370 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) [2021-06-10 15:02:49,370 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:49,370 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:49,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-10 15:02:49,370 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]=== [2021-06-10 15:02:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:49,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1634346943, now seen corresponding path program 94 times [2021-06-10 15:02:49,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:49,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198280321] [2021-06-10 15:02:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:49,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:49,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:49,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:49,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:49,384 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:02:49,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:02:49,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:49,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:49,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:49,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:49,413 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:49,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:49,431 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:02:49,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:02:49,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:02:49,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:02:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:49,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198280321] [2021-06-10 15:02:49,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:49,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:02:49,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124762767] [2021-06-10 15:02:49,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:02:49,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:49,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:02:49,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:02:49,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:02:49,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 1091 transitions, 50201 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) [2021-06-10 15:02:49,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:49,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:02:49,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:55,811 INFO L129 PetriNetUnfolder]: 463/13888 cut-off events. [2021-06-10 15:02:55,811 INFO L130 PetriNetUnfolder]: For 517220/521110 co-relation queries the response was YES. [2021-06-10 15:02:55,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92247 conditions, 13888 events. 463/13888 cut-off events. For 517220/521110 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 262146 event pairs, 463 based on Foata normal form. 45/13385 useless extension candidates. Maximal degree in co-relation 92084. Up to 2009 conditions per place. [2021-06-10 15:02:55,941 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 636 selfloop transitions, 488 changer transitions 2/1147 dead transitions. [2021-06-10 15:02:55,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 1147 transitions, 54660 flow [2021-06-10 15:02:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:02:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:02:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:02:55,942 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:02:55,942 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:02:55,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:02:55,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:55,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:02:55,943 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) [2021-06-10 15:02:55,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:55,943 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:55,943 INFO L185 Difference]: Start difference. First operand has 520 places, 1091 transitions, 50201 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:02:55,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 1147 transitions, 54660 flow [2021-06-10 15:03:00,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1147 transitions, 53707 flow, removed 43 selfloop flow, removed 6 redundant places. [2021-06-10 15:03:00,986 INFO L241 Difference]: Finished difference. Result has 522 places, 1089 transitions, 50115 flow [2021-06-10 15:03:00,986 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49258, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50115, PETRI_PLACES=522, PETRI_TRANSITIONS=1089} [2021-06-10 15:03:00,986 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 471 predicate places. [2021-06-10 15:03:00,986 INFO L480 AbstractCegarLoop]: Abstraction has has 522 places, 1089 transitions, 50115 flow [2021-06-10 15:03:00,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:00,986 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:00,987 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:00,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-10 15:03:00,987 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]=== [2021-06-10 15:03:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash -905992419, now seen corresponding path program 95 times [2021-06-10 15:03:00,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:00,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993415647] [2021-06-10 15:03:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:00,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:00,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:00,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:00,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:01,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:03:01,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:03:01,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:01,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:01,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:01,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:01,039 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:03:01,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:03:01,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:03:01,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:03:01,091 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:03:01,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:03:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:01,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993415647] [2021-06-10 15:03:01,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:01,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:03:01,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90647857] [2021-06-10 15:03:01,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:03:01,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:03:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:03:01,114 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:03:01,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1089 transitions, 50115 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) [2021-06-10 15:03:01,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:01,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:03:01,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:07,553 INFO L129 PetriNetUnfolder]: 463/13876 cut-off events. [2021-06-10 15:03:07,553 INFO L130 PetriNetUnfolder]: For 515072/518958 co-relation queries the response was YES. [2021-06-10 15:03:07,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92267 conditions, 13876 events. 463/13876 cut-off events. For 515072/518958 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 261825 event pairs, 463 based on Foata normal form. 45/13374 useless extension candidates. Maximal degree in co-relation 92105. Up to 2009 conditions per place. [2021-06-10 15:03:07,689 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 661 selfloop transitions, 462 changer transitions 1/1145 dead transitions. [2021-06-10 15:03:07,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1145 transitions, 54570 flow [2021-06-10 15:03:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:03:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:03:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:03:07,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:03:07,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:03:07,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:03:07,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:07,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:03:07,691 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) [2021-06-10 15:03:07,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:07,692 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:07,692 INFO L185 Difference]: Start difference. First operand has 522 places, 1089 transitions, 50115 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:03:07,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1145 transitions, 54570 flow [2021-06-10 15:03:12,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1145 transitions, 53884 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 15:03:12,933 INFO L241 Difference]: Finished difference. Result has 527 places, 1103 transitions, 51105 flow [2021-06-10 15:03:12,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49439, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51105, PETRI_PLACES=527, PETRI_TRANSITIONS=1103} [2021-06-10 15:03:12,934 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 476 predicate places. [2021-06-10 15:03:12,934 INFO L480 AbstractCegarLoop]: Abstraction has has 527 places, 1103 transitions, 51105 flow [2021-06-10 15:03:12,934 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) [2021-06-10 15:03:12,934 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:12,934 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:12,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-10 15:03:12,934 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]=== [2021-06-10 15:03:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:12,934 INFO L82 PathProgramCache]: Analyzing trace with hash 908095169, now seen corresponding path program 96 times [2021-06-10 15:03:12,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:12,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82677693] [2021-06-10 15:03:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:12,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:12,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:12,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:12,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:12,948 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:03:12,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:03:12,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:12,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:12,965 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:12,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:12,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:03:12,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:03:13,017 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:03:13,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:03:13,073 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:03:13,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:03:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:13,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82677693] [2021-06-10 15:03:13,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:13,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:03:13,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711163905] [2021-06-10 15:03:13,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:03:13,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:13,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:03:13,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:03:13,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:03:13,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1103 transitions, 51105 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) [2021-06-10 15:03:13,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:13,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:03:13,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:19,509 INFO L129 PetriNetUnfolder]: 463/13869 cut-off events. [2021-06-10 15:03:19,509 INFO L130 PetriNetUnfolder]: For 519122/523007 co-relation queries the response was YES. [2021-06-10 15:03:19,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92773 conditions, 13869 events. 463/13869 cut-off events. For 519122/523007 co-relation queries the response was YES. Maximal size of possible extension queue 2322. Compared 261612 event pairs, 463 based on Foata normal form. 43/13366 useless extension candidates. Maximal degree in co-relation 92610. Up to 2009 conditions per place. [2021-06-10 15:03:19,633 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 658 selfloop transitions, 462 changer transitions 3/1144 dead transitions. [2021-06-10 15:03:19,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1144 transitions, 54857 flow [2021-06-10 15:03:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:03:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:03:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:03:19,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:03:19,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:03:19,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:03:19,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:19,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:03:19,634 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) [2021-06-10 15:03:19,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:19,635 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:19,635 INFO L185 Difference]: Start difference. First operand has 527 places, 1103 transitions, 51105 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:03:19,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1144 transitions, 54857 flow [2021-06-10 15:03:24,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1144 transitions, 54003 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-06-10 15:03:24,993 INFO L241 Difference]: Finished difference. Result has 530 places, 1100 transitions, 51008 flow [2021-06-10 15:03:24,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=50261, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51008, PETRI_PLACES=530, PETRI_TRANSITIONS=1100} [2021-06-10 15:03:24,994 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 479 predicate places. [2021-06-10 15:03:24,994 INFO L480 AbstractCegarLoop]: Abstraction has has 530 places, 1100 transitions, 51008 flow [2021-06-10 15:03:24,994 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) [2021-06-10 15:03:24,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:24,994 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:24,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-10 15:03:24,994 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]=== [2021-06-10 15:03:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash -711201611, now seen corresponding path program 97 times [2021-06-10 15:03:24,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:24,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837078956] [2021-06-10 15:03:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:25,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:25,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:25,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:25,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:25,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:03:25,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:03:25,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:25,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:25,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:25,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:25,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:03:25,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:03:25,072 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:03:25,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:03:25,101 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:03:25,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:03:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:25,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837078956] [2021-06-10 15:03:25,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:25,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:03:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053717011] [2021-06-10 15:03:25,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:03:25,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:03:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:03:25,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:03:25,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1100 transitions, 51008 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) [2021-06-10 15:03:25,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:25,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:03:25,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:31,622 INFO L129 PetriNetUnfolder]: 463/13855 cut-off events. [2021-06-10 15:03:31,622 INFO L130 PetriNetUnfolder]: For 517192/520820 co-relation queries the response was YES. [2021-06-10 15:03:31,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92781 conditions, 13855 events. 463/13855 cut-off events. For 517192/520820 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 261274 event pairs, 463 based on Foata normal form. 45/13355 useless extension candidates. Maximal degree in co-relation 92618. Up to 2009 conditions per place. [2021-06-10 15:03:31,749 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 640 selfloop transitions, 478 changer transitions 2/1141 dead transitions. [2021-06-10 15:03:31,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1141 transitions, 54754 flow [2021-06-10 15:03:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:03:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:03:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:03:31,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:03:31,750 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:03:31,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:03:31,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:31,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:03:31,750 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) [2021-06-10 15:03:31,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:31,751 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:31,751 INFO L185 Difference]: Start difference. First operand has 530 places, 1100 transitions, 51008 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:03:31,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1141 transitions, 54754 flow [2021-06-10 15:03:37,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1141 transitions, 53545 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-10 15:03:37,039 INFO L241 Difference]: Finished difference. Result has 531 places, 1098 transitions, 50634 flow [2021-06-10 15:03:37,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49809, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50634, PETRI_PLACES=531, PETRI_TRANSITIONS=1098} [2021-06-10 15:03:37,039 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 480 predicate places. [2021-06-10 15:03:37,039 INFO L480 AbstractCegarLoop]: Abstraction has has 531 places, 1098 transitions, 50634 flow [2021-06-10 15:03:37,039 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) [2021-06-10 15:03:37,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:37,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:37,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-10 15:03:37,040 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]=== [2021-06-10 15:03:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:37,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1787232381, now seen corresponding path program 98 times [2021-06-10 15:03:37,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:37,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751696497] [2021-06-10 15:03:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:37,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:37,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:37,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:03:37,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:03:37,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:37,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:37,071 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:37,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:37,093 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:37,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:37,111 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:03:37,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:03:37,136 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:03:37,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:03:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:37,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751696497] [2021-06-10 15:03:37,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:37,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:03:37,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295206279] [2021-06-10 15:03:37,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:03:37,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:03:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:03:37,159 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:03:37,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1098 transitions, 50634 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) [2021-06-10 15:03:37,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:37,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:03:37,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:43,555 INFO L129 PetriNetUnfolder]: 463/13845 cut-off events. [2021-06-10 15:03:43,555 INFO L130 PetriNetUnfolder]: For 510918/514528 co-relation queries the response was YES. [2021-06-10 15:03:43,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92337 conditions, 13845 events. 463/13845 cut-off events. For 510918/514528 co-relation queries the response was YES. Maximal size of possible extension queue 2334. Compared 261185 event pairs, 463 based on Foata normal form. 45/13345 useless extension candidates. Maximal degree in co-relation 92174. Up to 2009 conditions per place. [2021-06-10 15:03:43,678 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 676 selfloop transitions, 440 changer transitions 2/1139 dead transitions. [2021-06-10 15:03:43,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1139 transitions, 54376 flow [2021-06-10 15:03:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:03:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:03:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:03:43,679 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:03:43,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:03:43,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:03:43,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:43,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:03:43,680 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) [2021-06-10 15:03:43,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:43,680 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:43,680 INFO L185 Difference]: Start difference. First operand has 531 places, 1098 transitions, 50634 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:03:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1139 transitions, 54376 flow [2021-06-10 15:03:48,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1139 transitions, 53435 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 15:03:48,988 INFO L241 Difference]: Finished difference. Result has 533 places, 1096 transitions, 50457 flow [2021-06-10 15:03:48,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49703, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50457, PETRI_PLACES=533, PETRI_TRANSITIONS=1096} [2021-06-10 15:03:48,989 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 482 predicate places. [2021-06-10 15:03:48,989 INFO L480 AbstractCegarLoop]: Abstraction has has 533 places, 1096 transitions, 50457 flow [2021-06-10 15:03:48,989 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) [2021-06-10 15:03:48,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:48,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:48,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-10 15:03:48,989 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]=== [2021-06-10 15:03:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:48,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2024561523, now seen corresponding path program 99 times [2021-06-10 15:03:48,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:48,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977490432] [2021-06-10 15:03:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:48,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:48,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:49,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:03:49,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:03:49,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:49,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:49,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:49,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:49,043 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:49,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:49,060 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:03:49,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:03:49,082 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:03:49,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:03:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:49,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977490432] [2021-06-10 15:03:49,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:49,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:03:49,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115984279] [2021-06-10 15:03:49,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:03:49,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:49,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:03:49,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:03:49,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:03:49,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1096 transitions, 50457 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) [2021-06-10 15:03:49,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:49,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:03:49,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:55,403 INFO L129 PetriNetUnfolder]: 463/13835 cut-off events. [2021-06-10 15:03:55,403 INFO L130 PetriNetUnfolder]: For 510375/513993 co-relation queries the response was YES. [2021-06-10 15:03:55,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92283 conditions, 13835 events. 463/13835 cut-off events. For 510375/513993 co-relation queries the response was YES. Maximal size of possible extension queue 2332. Compared 260887 event pairs, 463 based on Foata normal form. 45/13335 useless extension candidates. Maximal degree in co-relation 92120. Up to 2009 conditions per place. [2021-06-10 15:03:55,523 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 644 selfloop transitions, 471 changer transitions 1/1137 dead transitions. [2021-06-10 15:03:55,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1137 transitions, 54195 flow [2021-06-10 15:03:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:03:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:03:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:03:55,524 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:03:55,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:03:55,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:03:55,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:55,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:03:55,525 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) [2021-06-10 15:03:55,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:55,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:55,526 INFO L185 Difference]: Start difference. First operand has 533 places, 1096 transitions, 50457 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:03:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1137 transitions, 54195 flow [2021-06-10 15:04:00,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1137 transitions, 53316 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:00,658 INFO L241 Difference]: Finished difference. Result has 535 places, 1095 transitions, 50464 flow [2021-06-10 15:04:00,659 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49588, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50464, PETRI_PLACES=535, PETRI_TRANSITIONS=1095} [2021-06-10 15:04:00,659 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 484 predicate places. [2021-06-10 15:04:00,659 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 1095 transitions, 50464 flow [2021-06-10 15:04:00,659 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) [2021-06-10 15:04:00,659 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:00,659 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:00,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-10 15:04:00,659 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]=== [2021-06-10 15:04:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:00,659 INFO L82 PathProgramCache]: Analyzing trace with hash 602475493, now seen corresponding path program 100 times [2021-06-10 15:04:00,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:00,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485905073] [2021-06-10 15:04:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:00,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:00,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:00,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:00,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:00,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:00,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:00,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:00,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:00,692 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:04:00,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:04:00,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:00,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:00,722 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:04:00,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:04:00,745 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:04:00,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:04:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:00,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485905073] [2021-06-10 15:04:00,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:00,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:04:00,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920221582] [2021-06-10 15:04:00,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:04:00,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:00,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:04:00,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:04:00,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:04:00,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1095 transitions, 50464 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) [2021-06-10 15:04:00,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:00,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:04:00,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:07,119 INFO L129 PetriNetUnfolder]: 463/13827 cut-off events. [2021-06-10 15:04:07,119 INFO L130 PetriNetUnfolder]: For 509973/513579 co-relation queries the response was YES. [2021-06-10 15:04:07,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92268 conditions, 13827 events. 463/13827 cut-off events. For 509973/513579 co-relation queries the response was YES. Maximal size of possible extension queue 2331. Compared 260659 event pairs, 463 based on Foata normal form. 45/13327 useless extension candidates. Maximal degree in co-relation 92105. Up to 2009 conditions per place. [2021-06-10 15:04:07,257 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 642 selfloop transitions, 471 changer transitions 2/1136 dead transitions. [2021-06-10 15:04:07,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1136 transitions, 54200 flow [2021-06-10 15:04:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:04:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:04:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:04:07,258 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:04:07,258 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:04:07,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:04:07,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:07,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:04:07,259 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) [2021-06-10 15:04:07,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:07,259 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:07,259 INFO L185 Difference]: Start difference. First operand has 535 places, 1095 transitions, 50464 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:04:07,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1136 transitions, 54200 flow [2021-06-10 15:04:12,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 1136 transitions, 53346 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 15:04:12,500 INFO L241 Difference]: Finished difference. Result has 538 places, 1093 transitions, 50440 flow [2021-06-10 15:04:12,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49620, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50440, PETRI_PLACES=538, PETRI_TRANSITIONS=1093} [2021-06-10 15:04:12,501 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 487 predicate places. [2021-06-10 15:04:12,501 INFO L480 AbstractCegarLoop]: Abstraction has has 538 places, 1093 transitions, 50440 flow [2021-06-10 15:04:12,501 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) [2021-06-10 15:04:12,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:12,501 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:12,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-10 15:04:12,501 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]=== [2021-06-10 15:04:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:12,502 INFO L82 PathProgramCache]: Analyzing trace with hash 972366533, now seen corresponding path program 101 times [2021-06-10 15:04:12,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:12,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122499871] [2021-06-10 15:04:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:12,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:12,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:12,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:12,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:12,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:12,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:12,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:12,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:12,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:12,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:12,566 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:04:12,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:04:12,593 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:04:12,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:04:12,618 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:04:12,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:04:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:12,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122499871] [2021-06-10 15:04:12,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:12,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:04:12,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553343741] [2021-06-10 15:04:12,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:04:12,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:12,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:04:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:04:12,643 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:04:12,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1093 transitions, 50440 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) [2021-06-10 15:04:12,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:12,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:04:12,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:18,975 INFO L129 PetriNetUnfolder]: 463/13817 cut-off events. [2021-06-10 15:04:18,976 INFO L130 PetriNetUnfolder]: For 509153/512762 co-relation queries the response was YES. [2021-06-10 15:04:19,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92339 conditions, 13817 events. 463/13817 cut-off events. For 509153/512762 co-relation queries the response was YES. Maximal size of possible extension queue 2312. Compared 260462 event pairs, 463 based on Foata normal form. 43/13315 useless extension candidates. Maximal degree in co-relation 92176. Up to 2009 conditions per place. [2021-06-10 15:04:19,093 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 661 selfloop transitions, 451 changer transitions 1/1134 dead transitions. [2021-06-10 15:04:19,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1134 transitions, 54172 flow [2021-06-10 15:04:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:04:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:04:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:04:19,094 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:04:19,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:04:19,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:04:19,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:19,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:04:19,094 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) [2021-06-10 15:04:19,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:19,095 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:19,095 INFO L185 Difference]: Start difference. First operand has 538 places, 1093 transitions, 50440 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:04:19,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1134 transitions, 54172 flow [2021-06-10 15:04:24,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1134 transitions, 53234 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:24,234 INFO L241 Difference]: Finished difference. Result has 540 places, 1092 transitions, 50344 flow [2021-06-10 15:04:24,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49512, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50344, PETRI_PLACES=540, PETRI_TRANSITIONS=1092} [2021-06-10 15:04:24,235 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 489 predicate places. [2021-06-10 15:04:24,235 INFO L480 AbstractCegarLoop]: Abstraction has has 540 places, 1092 transitions, 50344 flow [2021-06-10 15:04:24,235 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) [2021-06-10 15:04:24,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:24,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:24,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-10 15:04:24,235 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]=== [2021-06-10 15:04:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:24,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1881532223, now seen corresponding path program 102 times [2021-06-10 15:04:24,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:24,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002331581] [2021-06-10 15:04:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:24,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:24,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:24,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:24,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:24,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:24,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:24,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:24,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:24,265 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:24,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:24,287 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 15:04:24,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 15:04:24,315 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-10 15:04:24,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 15:04:24,338 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:04:24,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:04:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:24,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002331581] [2021-06-10 15:04:24,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:24,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:04:24,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059706238] [2021-06-10 15:04:24,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:04:24,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:24,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:04:24,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:04:24,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:04:24,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1092 transitions, 50344 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) [2021-06-10 15:04:24,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:24,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:04:24,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:30,479 INFO L129 PetriNetUnfolder]: 463/13809 cut-off events. [2021-06-10 15:04:30,479 INFO L130 PetriNetUnfolder]: For 508865/512258 co-relation queries the response was YES. [2021-06-10 15:04:30,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92321 conditions, 13809 events. 463/13809 cut-off events. For 508865/512258 co-relation queries the response was YES. Maximal size of possible extension queue 2328. Compared 260297 event pairs, 463 based on Foata normal form. 45/13309 useless extension candidates. Maximal degree in co-relation 92158. Up to 2009 conditions per place. [2021-06-10 15:04:30,597 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 659 selfloop transitions, 451 changer transitions 2/1133 dead transitions. [2021-06-10 15:04:30,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1133 transitions, 54074 flow [2021-06-10 15:04:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:04:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:04:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:04:30,598 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:04:30,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:04:30,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:04:30,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:30,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:04:30,599 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) [2021-06-10 15:04:30,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:30,599 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:30,599 INFO L185 Difference]: Start difference. First operand has 540 places, 1092 transitions, 50344 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:04:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1133 transitions, 54074 flow [2021-06-10 15:04:35,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1133 transitions, 53181 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:35,776 INFO L241 Difference]: Finished difference. Result has 542 places, 1090 transitions, 50230 flow [2021-06-10 15:04:35,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49461, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50230, PETRI_PLACES=542, PETRI_TRANSITIONS=1090} [2021-06-10 15:04:35,776 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 491 predicate places. [2021-06-10 15:04:35,776 INFO L480 AbstractCegarLoop]: Abstraction has has 542 places, 1090 transitions, 50230 flow [2021-06-10 15:04:35,777 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) [2021-06-10 15:04:35,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:35,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:35,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-10 15:04:35,777 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]=== [2021-06-10 15:04:35,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1566521025, now seen corresponding path program 103 times [2021-06-10 15:04:35,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:35,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819171547] [2021-06-10 15:04:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:35,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:35,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:35,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:35,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:35,798 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:35,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:35,808 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:35,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:35,822 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:35,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:35,841 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:04:35,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:04:35,865 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:04:35,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:04:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:35,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819171547] [2021-06-10 15:04:35,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:35,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:04:35,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897464323] [2021-06-10 15:04:35,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:04:35,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:35,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:04:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:04:35,888 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:04:35,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1090 transitions, 50230 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) [2021-06-10 15:04:35,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:35,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:04:35,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:42,329 INFO L129 PetriNetUnfolder]: 463/13799 cut-off events. [2021-06-10 15:04:42,329 INFO L130 PetriNetUnfolder]: For 505746/509131 co-relation queries the response was YES. [2021-06-10 15:04:42,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92366 conditions, 13799 events. 463/13799 cut-off events. For 505746/509131 co-relation queries the response was YES. Maximal size of possible extension queue 2326. Compared 260100 event pairs, 463 based on Foata normal form. 45/13299 useless extension candidates. Maximal degree in co-relation 92204. Up to 2009 conditions per place. [2021-06-10 15:04:42,454 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 687 selfloop transitions, 433 changer transitions 2/1143 dead transitions. [2021-06-10 15:04:42,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1143 transitions, 54501 flow [2021-06-10 15:04:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:04:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:04:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:04:42,455 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:04:42,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:04:42,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:04:42,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:42,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:04:42,456 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) [2021-06-10 15:04:42,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:42,456 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:42,456 INFO L185 Difference]: Start difference. First operand has 542 places, 1090 transitions, 50230 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:04:42,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 1143 transitions, 54501 flow [2021-06-10 15:04:47,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1143 transitions, 53617 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:47,729 INFO L241 Difference]: Finished difference. Result has 545 places, 1100 transitions, 50694 flow [2021-06-10 15:04:47,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49356, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50694, PETRI_PLACES=545, PETRI_TRANSITIONS=1100} [2021-06-10 15:04:47,730 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 494 predicate places. [2021-06-10 15:04:47,730 INFO L480 AbstractCegarLoop]: Abstraction has has 545 places, 1100 transitions, 50694 flow [2021-06-10 15:04:47,730 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) [2021-06-10 15:04:47,730 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:47,730 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:47,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-10 15:04:47,730 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]=== [2021-06-10 15:04:47,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1765650433, now seen corresponding path program 104 times [2021-06-10 15:04:47,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:47,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937828941] [2021-06-10 15:04:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:47,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:47,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:47,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:47,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:47,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:47,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:47,750 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:47,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:47,760 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:47,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:47,773 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:47,792 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:04:47,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:04:47,815 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:04:47,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:04:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:47,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937828941] [2021-06-10 15:04:47,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:47,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:04:47,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067496325] [2021-06-10 15:04:47,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:04:47,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:04:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:04:47,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:04:47,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1100 transitions, 50694 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) [2021-06-10 15:04:47,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:47,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:04:47,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:54,164 INFO L129 PetriNetUnfolder]: 463/13790 cut-off events. [2021-06-10 15:04:54,164 INFO L130 PetriNetUnfolder]: For 508196/511589 co-relation queries the response was YES. [2021-06-10 15:04:54,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92343 conditions, 13790 events. 463/13790 cut-off events. For 508196/511589 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 259850 event pairs, 463 based on Foata normal form. 45/13291 useless extension candidates. Maximal degree in co-relation 92180. Up to 2009 conditions per place. [2021-06-10 15:04:54,362 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 688 selfloop transitions, 430 changer transitions 2/1141 dead transitions. [2021-06-10 15:04:54,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1141 transitions, 54458 flow [2021-06-10 15:04:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:04:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 15:04:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-10 15:04:54,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-10 15:04:54,363 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-10 15:04:54,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-10 15:04:54,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:54,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-10 15:04:54,363 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) [2021-06-10 15:04:54,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:54,366 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:54,366 INFO L185 Difference]: Start difference. First operand has 545 places, 1100 transitions, 50694 flow. Second operand 9 states and 674 transitions. [2021-06-10 15:04:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1141 transitions, 54458 flow [2021-06-10 15:04:59,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 1141 transitions, 53752 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-06-10 15:04:59,945 INFO L241 Difference]: Finished difference. Result has 549 places, 1098 transitions, 50740 flow [2021-06-10 15:04:59,945 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=49998, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50740, PETRI_PLACES=549, PETRI_TRANSITIONS=1098} [2021-06-10 15:04:59,945 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, 498 predicate places. [2021-06-10 15:04:59,945 INFO L480 AbstractCegarLoop]: Abstraction has has 549 places, 1098 transitions, 50740 flow [2021-06-10 15:04:59,945 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) [2021-06-10 15:04:59,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:59,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:59,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-10 15:04:59,945 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]=== [2021-06-10 15:04:59,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:59,946 INFO L82 PathProgramCache]: Analyzing trace with hash -483842395, now seen corresponding path program 105 times [2021-06-10 15:04:59,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:59,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496601720] [2021-06-10 15:04:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:59,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:59,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:59,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:59,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:59,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:59,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:59,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:59,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:59,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:59,988 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:59,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:05:00,008 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 15:05:00,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 15:05:00,037 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-06-10 15:05:00,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 15:05:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:05:00,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496601720] [2021-06-10 15:05:00,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:05:00,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 15:05:00,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120255783] [2021-06-10 15:05:00,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 15:05:00,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:05:00,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 15:05:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-06-10 15:05:00,060 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-06-10 15:05:00,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 1098 transitions, 50740 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) [2021-06-10 15:05:00,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:05:00,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-06-10 15:05:00,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-06-10 15:05:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 15:05:06,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-10 15:05:06,151 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-10 15:05:06,154 WARN L224 ceAbstractionStarter]: Timeout [2021-06-10 15:05:06,154 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 03:05:06 BasicIcfg [2021-06-10 15:05:06,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 15:05:06,155 INFO L168 Benchmark]: Toolchain (without parser) took 826189.88 ms. Allocated memory was 360.7 MB in the beginning and 12.7 GB in the end (delta: 12.3 GB). Free memory was 341.0 MB in the beginning and 10.7 GB in the end (delta: -10.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 16.0 GB. [2021-06-10 15:05:06,155 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 360.7 MB. Free memory is still 342.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 15:05:06,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.03 ms. Allocated memory is still 360.7 MB. Free memory was 340.9 MB in the beginning and 339.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:06,155 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 ms. Allocated memory is still 360.7 MB. Free memory was 339.4 MB in the beginning and 338.5 MB in the end (delta: 924.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 15:05:06,155 INFO L168 Benchmark]: RCFGBuilder took 212.93 ms. Allocated memory is still 360.7 MB. Free memory was 338.5 MB in the beginning and 327.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:06,155 INFO L168 Benchmark]: TraceAbstraction took 825924.03 ms. Allocated memory was 360.7 MB in the beginning and 12.7 GB in the end (delta: 12.3 GB). Free memory was 327.0 MB in the beginning and 10.7 GB in the end (delta: -10.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 16.0 GB. [2021-06-10 15:05:06,155 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 0.11 ms. Allocated memory is still 360.7 MB. Free memory is still 342.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.03 ms. Allocated memory is still 360.7 MB. Free memory was 340.9 MB in the beginning and 339.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.25 ms. Allocated memory is still 360.7 MB. Free memory was 339.4 MB in the beginning and 338.5 MB in the end (delta: 924.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 212.93 ms. Allocated memory is still 360.7 MB. Free memory was 338.5 MB in the beginning and 327.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 825924.03 ms. Allocated memory was 360.7 MB in the beginning and 12.7 GB in the end (delta: 12.3 GB). Free memory was 327.0 MB in the beginning and 10.7 GB in the end (delta: -10.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 71/80 universal loopers) in iteration 111,while PetriNetUnfolder was constructing finite prefix that currently has 90848 conditions, 13159 events (463/13158 cut-off events. For 508611/511992 co-relation queries the response was YES. Maximal size of possible extension queue 2321. Compared 251068 event pairs, 463 based on Foata normal form. 45/13279 useless extension candidates. Maximal degree in co-relation 90685. Up to 1617 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 72.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 825785.5ms, OverallIterations: 111, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 811054.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 134.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2334 SDtfs, 3790 SDslu, 2351 SDs, 0 SdLazy, 4144 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2901.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 963 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 846 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 14474.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51105occurred in iteration=101, InterpolantAutomatonStates: 954, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.7ms SsaConstructionTime, 133.9ms SatisfiabilityAnalysisTime, 13787.7ms InterpolantComputationTime, 3219 NumberOfCodeBlocks, 3219 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 3108 ConstructedInterpolants, 0 QuantifiedInterpolants, 99074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 111 InterpolantComputations, 111 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