/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:45:40,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:45:40,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:45:40,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:45:40,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:45:40,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:45:40,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:45:40,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:45:40,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:45:40,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:45:40,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:45:40,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:45:40,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:45:40,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:45:40,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:45:40,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:45:40,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:45:40,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:45:40,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:45:40,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:45:40,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:45:40,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:45:40,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:45:40,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:45:40,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:45:40,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:45:40,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:45:40,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:45:40,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 22:45:40,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:45:40,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:45:40,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:45:40,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:45:40,440 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:45:40,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:45:40,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:45:40,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:45:40,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:45:40,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:45:40,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:45:40,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:45:40,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:45:40,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:45:40,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:45:40,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:45:40,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:45:40,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:45:40,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:45:40,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:45:40,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:45:40,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:45:40,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:45:40,702 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 22:45:40,703 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 22:45:40,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-03-11 22:45:40,703 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-03-11 22:45:40,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:45:40,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 22:45:40,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:45:40,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:45:40,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:45:40,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:45:40,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:45:40,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:45:40,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:45:40,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... [2021-03-11 22:45:40,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:45:40,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:45:40,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:45:40,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:45:40,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:45:40,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 22:45:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 22:45:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 22:45:40,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 22:45:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 22:45:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 22:45:40,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 22:45:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 22:45:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 22:45:40,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 22:45:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 22:45:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 22:45:40,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 22:45:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 22:45:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 22:45:40,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 22:45:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:45:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:45:40,802 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:45:40,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:45:40,887 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 22:45:40,888 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:45:40 BoogieIcfgContainer [2021-03-11 22:45:40,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:45:40,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:45:40,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:45:40,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:45:40,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:45:40" (1/2) ... [2021-03-11 22:45:40,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3d2f96 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:45:40, skipping insertion in model container [2021-03-11 22:45:40,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:45:40" (2/2) ... [2021-03-11 22:45:40,892 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-03-11 22:45:40,895 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:45:40,898 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:45:40,898 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:45:40,934 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-03-11 22:45:40,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 22:45:40,958 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:45:40,958 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:45:40,958 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:45:40,965 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:45:40,966 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:45:40,966 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:45:40,966 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:45:40,966 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:45:40,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 196 flow [2021-03-11 22:45:40,999 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2021-03-11 22:45:40,999 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-11 22:45:41,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 331 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-03-11 22:45:41,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 48 transitions, 196 flow [2021-03-11 22:45:41,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 41 transitions, 172 flow [2021-03-11 22:45:41,007 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:45:41,013 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 41 transitions, 172 flow [2021-03-11 22:45:41,015 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 41 transitions, 172 flow [2021-03-11 22:45:41,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 41 transitions, 172 flow [2021-03-11 22:45:41,031 INFO L129 PetriNetUnfolder]: 49/96 cut-off events. [2021-03-11 22:45:41,031 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-11 22:45:41,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 96 events. 49/96 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 272 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-03-11 22:45:41,033 INFO L116 LiptonReduction]: Number of co-enabled transitions 440 [2021-03-11 22:45:41,080 INFO L131 LiptonReduction]: Checked pairs total: 1330 [2021-03-11 22:45:41,080 INFO L133 LiptonReduction]: Total number of compositions: 5 [2021-03-11 22:45:41,081 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-03-11 22:45:41,097 INFO L129 PetriNetUnfolder]: 49/90 cut-off events. [2021-03-11 22:45:41,097 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-11 22:45:41,097 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,098 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,098 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1238912704, now seen corresponding path program 1 times [2021-03-11 22:45:41,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576413225] [2021-03-11 22:45:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:45:41,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576413225] [2021-03-11 22:45:41,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:45:41,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558162379] [2021-03-11 22:45:41,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:45:41,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:45:41,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:45:41,201 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 22:45:41,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 36 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 22:45:41,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,223 INFO L129 PetriNetUnfolder]: 33/70 cut-off events. [2021-03-11 22:45:41,224 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-03-11 22:45:41,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 70 events. 33/70 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs, 0 based on Foata normal form. 5/75 useless extension candidates. Maximal degree in co-relation 75. Up to 20 conditions per place. [2021-03-11 22:45:41,225 INFO L132 encePairwiseOnDemand]: 50/53 looper letters, 3 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-03-11 22:45:41,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 160 flow [2021-03-11 22:45:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:45:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:45:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2021-03-11 22:45:41,234 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2021-03-11 22:45:41,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2021-03-11 22:45:41,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2021-03-11 22:45:41,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2021-03-11 22:45:41,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,242 INFO L185 Difference]: Start difference. First operand has 32 places, 36 transitions, 162 flow. Second operand 3 states and 147 transitions. [2021-03-11 22:45:41,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 160 flow [2021-03-11 22:45:41,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-03-11 22:45:41,247 INFO L241 Difference]: Finished difference. Result has 24 places, 34 transitions, 98 flow [2021-03-11 22:45:41,248 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=24, PETRI_TRANSITIONS=34} [2021-03-11 22:45:41,249 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, -8 predicate places. [2021-03-11 22:45:41,249 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 34 transitions, 98 flow [2021-03-11 22:45:41,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,249 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,249 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:45:41,250 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash 365629154, now seen corresponding path program 1 times [2021-03-11 22:45:41,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103800496] [2021-03-11 22:45:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:45:41,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103800496] [2021-03-11 22:45:41,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:45:41,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55562488] [2021-03-11 22:45:41,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:45:41,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:45:41,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:45:41,272 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 22:45:41,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 34 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 22:45:41,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,284 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2021-03-11 22:45:41,284 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 22:45:41,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 31 events. 8/31 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 11/42 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-03-11 22:45:41,285 INFO L132 encePairwiseOnDemand]: 48/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-03-11 22:45:41,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 78 flow [2021-03-11 22:45:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:45:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:45:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2021-03-11 22:45:41,286 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2021-03-11 22:45:41,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2021-03-11 22:45:41,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2021-03-11 22:45:41,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2021-03-11 22:45:41,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,289 INFO L185 Difference]: Start difference. First operand has 24 places, 34 transitions, 98 flow. Second operand 3 states and 147 transitions. [2021-03-11 22:45:41,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 78 flow [2021-03-11 22:45:41,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:45:41,290 INFO L241 Difference]: Finished difference. Result has 25 places, 26 transitions, 75 flow [2021-03-11 22:45:41,291 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=26} [2021-03-11 22:45:41,291 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, -7 predicate places. [2021-03-11 22:45:41,291 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 26 transitions, 75 flow [2021-03-11 22:45:41,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,291 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,291 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:45:41,292 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash -402416358, now seen corresponding path program 1 times [2021-03-11 22:45:41,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451203206] [2021-03-11 22:45:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:45:41,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451203206] [2021-03-11 22:45:41,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:45:41,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256271579] [2021-03-11 22:45:41,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:45:41,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:45:41,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:45:41,311 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 22:45:41,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 22:45:41,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,319 INFO L129 PetriNetUnfolder]: 6/28 cut-off events. [2021-03-11 22:45:41,319 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 22:45:41,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 28 events. 6/28 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-03-11 22:45:41,320 INFO L132 encePairwiseOnDemand]: 51/53 looper letters, 3 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2021-03-11 22:45:41,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 80 flow [2021-03-11 22:45:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:45:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:45:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-11 22:45:41,321 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9182389937106918 [2021-03-11 22:45:41,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-11 22:45:41,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-11 22:45:41,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-11 22:45:41,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,324 INFO L185 Difference]: Start difference. First operand has 25 places, 26 transitions, 75 flow. Second operand 3 states and 146 transitions. [2021-03-11 22:45:41,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 80 flow [2021-03-11 22:45:41,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:45:41,325 INFO L241 Difference]: Finished difference. Result has 26 places, 25 transitions, 73 flow [2021-03-11 22:45:41,325 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2021-03-11 22:45:41,325 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2021-03-11 22:45:41,325 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 73 flow [2021-03-11 22:45:41,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,325 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,325 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 22:45:41,326 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1086930978, now seen corresponding path program 1 times [2021-03-11 22:45:41,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448361203] [2021-03-11 22:45:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:45:41,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448361203] [2021-03-11 22:45:41,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:45:41,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85812716] [2021-03-11 22:45:41,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:45:41,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:45:41,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:45:41,343 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-11 22:45:41,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-11 22:45:41,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,350 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 22:45:41,350 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 22:45:41,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:45:41,350 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2021-03-11 22:45:41,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 50 flow [2021-03-11 22:45:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:45:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:45:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-11 22:45:41,352 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9182389937106918 [2021-03-11 22:45:41,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-11 22:45:41,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-11 22:45:41,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-11 22:45:41,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,354 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 73 flow. Second operand 3 states and 146 transitions. [2021-03-11 22:45:41,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 50 flow [2021-03-11 22:45:41,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:45:41,355 INFO L241 Difference]: Finished difference. Result has 27 places, 16 transitions, 47 flow [2021-03-11 22:45:41,355 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=27, PETRI_TRANSITIONS=16} [2021-03-11 22:45:41,355 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2021-03-11 22:45:41,355 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 16 transitions, 47 flow [2021-03-11 22:45:41,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,356 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,356 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 22:45:41,356 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1212442274, now seen corresponding path program 1 times [2021-03-11 22:45:41,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612754478] [2021-03-11 22:45:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:41,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:41,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:41,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:41,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:41,431 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:41,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:41,452 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:41,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612754478] [2021-03-11 22:45:41,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:41,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807956104] [2021-03-11 22:45:41,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:41,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:41,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:41,472 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:41,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 16 transitions, 47 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:41,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,550 INFO L129 PetriNetUnfolder]: 51/136 cut-off events. [2021-03-11 22:45:41,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:45:41,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 136 events. 51/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 552 event pairs, 17 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 241. Up to 41 conditions per place. [2021-03-11 22:45:41,553 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 4 changer transitions 1/29 dead transitions. [2021-03-11 22:45:41,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 111 flow [2021-03-11 22:45:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:41,558 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:41,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,563 INFO L185 Difference]: Start difference. First operand has 27 places, 16 transitions, 47 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:41,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 111 flow [2021-03-11 22:45:41,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:45:41,564 INFO L241 Difference]: Finished difference. Result has 37 places, 19 transitions, 77 flow [2021-03-11 22:45:41,564 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2021-03-11 22:45:41,564 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-11 22:45:41,564 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 77 flow [2021-03-11 22:45:41,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,565 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,565 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 22:45:41,566 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1643572000, now seen corresponding path program 2 times [2021-03-11 22:45:41,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109092737] [2021-03-11 22:45:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:41,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:41,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:41,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:41,667 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:41,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:41,693 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:41,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109092737] [2021-03-11 22:45:41,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:41,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043790733] [2021-03-11 22:45:41,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:41,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:41,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:41,714 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:41,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 77 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:41,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,786 INFO L129 PetriNetUnfolder]: 53/184 cut-off events. [2021-03-11 22:45:41,787 INFO L130 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2021-03-11 22:45:41,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 184 events. 53/184 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 972 event pairs, 17 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 442. Up to 50 conditions per place. [2021-03-11 22:45:41,790 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 7 changer transitions 1/32 dead transitions. [2021-03-11 22:45:41,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 177 flow [2021-03-11 22:45:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:41,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:41,792 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,795 INFO L185 Difference]: Start difference. First operand has 37 places, 19 transitions, 77 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:41,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 177 flow [2021-03-11 22:45:41,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 164 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-11 22:45:41,798 INFO L241 Difference]: Finished difference. Result has 45 places, 22 transitions, 122 flow [2021-03-11 22:45:41,798 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=22} [2021-03-11 22:45:41,798 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2021-03-11 22:45:41,799 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 22 transitions, 122 flow [2021-03-11 22:45:41,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,799 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,799 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 22:45:41,799 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1536764328, now seen corresponding path program 3 times [2021-03-11 22:45:41,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698534000] [2021-03-11 22:45:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:41,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:41,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:41,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:41,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:41,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:41,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:41,870 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:41,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:41,890 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:41,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:41,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698534000] [2021-03-11 22:45:41,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:41,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:41,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832290303] [2021-03-11 22:45:41,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:41,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:41,920 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:41,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 22 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:41,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:41,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:41,988 INFO L129 PetriNetUnfolder]: 50/258 cut-off events. [2021-03-11 22:45:41,988 INFO L130 PetriNetUnfolder]: For 502/518 co-relation queries the response was YES. [2021-03-11 22:45:41,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 258 events. 50/258 cut-off events. For 502/518 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1768 event pairs, 15 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 743. Up to 67 conditions per place. [2021-03-11 22:45:41,990 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 9 changer transitions 3/44 dead transitions. [2021-03-11 22:45:41,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 346 flow [2021-03-11 22:45:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:41,991 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:41,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:41,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:41,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,993 INFO L185 Difference]: Start difference. First operand has 45 places, 22 transitions, 122 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:41,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 346 flow [2021-03-11 22:45:41,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 318 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-11 22:45:41,997 INFO L241 Difference]: Finished difference. Result has 53 places, 29 transitions, 218 flow [2021-03-11 22:45:41,998 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=29} [2021-03-11 22:45:41,998 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2021-03-11 22:45:41,998 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 29 transitions, 218 flow [2021-03-11 22:45:41,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:41,998 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:41,998 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:41,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 22:45:41,998 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash 545955488, now seen corresponding path program 4 times [2021-03-11 22:45:41,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:41,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841116803] [2021-03-11 22:45:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:42,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:42,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:42,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:42,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:42,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:42,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:42,081 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:42,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:42,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:42,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:42,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841116803] [2021-03-11 22:45:42,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:42,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:42,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190429332] [2021-03-11 22:45:42,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:42,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:42,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:42,118 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:42,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 29 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:42,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:42,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:42,196 INFO L129 PetriNetUnfolder]: 50/294 cut-off events. [2021-03-11 22:45:42,196 INFO L130 PetriNetUnfolder]: For 838/845 co-relation queries the response was YES. [2021-03-11 22:45:42,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 294 events. 50/294 cut-off events. For 838/845 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2291 event pairs, 15 based on Foata normal form. 1/277 useless extension candidates. Maximal degree in co-relation 928. Up to 78 conditions per place. [2021-03-11 22:45:42,198 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 23 selfloop transitions, 15 changer transitions 1/49 dead transitions. [2021-03-11 22:45:42,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 459 flow [2021-03-11 22:45:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:42,199 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:42,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:42,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,200 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,201 INFO L185 Difference]: Start difference. First operand has 53 places, 29 transitions, 218 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:42,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 459 flow [2021-03-11 22:45:42,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 435 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:42,203 INFO L241 Difference]: Finished difference. Result has 60 places, 38 transitions, 373 flow [2021-03-11 22:45:42,204 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2021-03-11 22:45:42,204 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2021-03-11 22:45:42,204 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 373 flow [2021-03-11 22:45:42,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,204 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:42,204 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:42,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 22:45:42,204 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2092857184, now seen corresponding path program 5 times [2021-03-11 22:45:42,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:42,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621666515] [2021-03-11 22:45:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:42,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:42,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:42,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:42,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:42,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:42,270 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:42,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:42,287 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:42,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:42,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621666515] [2021-03-11 22:45:42,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:42,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:42,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965146293] [2021-03-11 22:45:42,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:42,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:42,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:42,302 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:42,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:42,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:42,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:42,366 INFO L129 PetriNetUnfolder]: 47/316 cut-off events. [2021-03-11 22:45:42,366 INFO L130 PetriNetUnfolder]: For 1299/1316 co-relation queries the response was YES. [2021-03-11 22:45:42,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 316 events. 47/316 cut-off events. For 1299/1316 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2501 event pairs, 20 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 1104. Up to 76 conditions per place. [2021-03-11 22:45:42,368 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 20 changer transitions 1/53 dead transitions. [2021-03-11 22:45:42,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 580 flow [2021-03-11 22:45:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:42,369 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:42,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:42,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,370 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,370 INFO L185 Difference]: Start difference. First operand has 60 places, 38 transitions, 373 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:42,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 580 flow [2021-03-11 22:45:42,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 555 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-03-11 22:45:42,374 INFO L241 Difference]: Finished difference. Result has 68 places, 42 transitions, 477 flow [2021-03-11 22:45:42,374 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2021-03-11 22:45:42,374 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2021-03-11 22:45:42,374 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 477 flow [2021-03-11 22:45:42,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,374 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:42,375 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:42,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 22:45:42,375 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1762277944, now seen corresponding path program 6 times [2021-03-11 22:45:42,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:42,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772252271] [2021-03-11 22:45:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:42,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:42,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:42,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:42,401 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:42,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:42,411 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:42,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:42,425 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:42,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:42,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772252271] [2021-03-11 22:45:42,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:42,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:42,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785939103] [2021-03-11 22:45:42,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:42,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:42,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:42,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:42,441 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:42,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:42,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:42,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:42,498 INFO L129 PetriNetUnfolder]: 41/351 cut-off events. [2021-03-11 22:45:42,498 INFO L130 PetriNetUnfolder]: For 1894/1908 co-relation queries the response was YES. [2021-03-11 22:45:42,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 351 events. 41/351 cut-off events. For 1894/1908 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3021 event pairs, 21 based on Foata normal form. 3/339 useless extension candidates. Maximal degree in co-relation 1338. Up to 74 conditions per place. [2021-03-11 22:45:42,501 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2021-03-11 22:45:42,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 789 flow [2021-03-11 22:45:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:42,502 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:42,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:42,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,503 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,503 INFO L185 Difference]: Start difference. First operand has 68 places, 42 transitions, 477 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:42,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 789 flow [2021-03-11 22:45:42,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 745 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-03-11 22:45:42,508 INFO L241 Difference]: Finished difference. Result has 76 places, 46 transitions, 579 flow [2021-03-11 22:45:42,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=76, PETRI_TRANSITIONS=46} [2021-03-11 22:45:42,509 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2021-03-11 22:45:42,509 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 46 transitions, 579 flow [2021-03-11 22:45:42,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:42,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:42,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 22:45:42,509 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1188715296, now seen corresponding path program 7 times [2021-03-11 22:45:42,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:42,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046862280] [2021-03-11 22:45:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:42,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:42,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:42,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:42,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:42,535 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:42,546 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:42,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:42,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:42,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046862280] [2021-03-11 22:45:42,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:42,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:42,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312779609] [2021-03-11 22:45:42,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:42,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:42,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:42,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:42,573 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:42,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 46 transitions, 579 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:42,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:42,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:42,638 INFO L129 PetriNetUnfolder]: 41/349 cut-off events. [2021-03-11 22:45:42,638 INFO L130 PetriNetUnfolder]: For 2302/2368 co-relation queries the response was YES. [2021-03-11 22:45:42,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 349 events. 41/349 cut-off events. For 2302/2368 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2984 event pairs, 17 based on Foata normal form. 8/340 useless extension candidates. Maximal degree in co-relation 1403. Up to 77 conditions per place. [2021-03-11 22:45:42,640 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 24 changer transitions 3/62 dead transitions. [2021-03-11 22:45:42,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 62 transitions, 861 flow [2021-03-11 22:45:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:42,641 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:42,641 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:42,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,643 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,643 INFO L185 Difference]: Start difference. First operand has 76 places, 46 transitions, 579 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 62 transitions, 861 flow [2021-03-11 22:45:42,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 62 transitions, 816 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:42,648 INFO L241 Difference]: Finished difference. Result has 82 places, 50 transitions, 702 flow [2021-03-11 22:45:42,649 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=82, PETRI_TRANSITIONS=50} [2021-03-11 22:45:42,649 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 50 predicate places. [2021-03-11 22:45:42,649 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 50 transitions, 702 flow [2021-03-11 22:45:42,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,649 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:42,649 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:42,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 22:45:42,649 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:42,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:42,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1856841568, now seen corresponding path program 8 times [2021-03-11 22:45:42,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:42,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347118915] [2021-03-11 22:45:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:42,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:42,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:42,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:42,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:42,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:42,699 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:42,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:42,714 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:42,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:42,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347118915] [2021-03-11 22:45:42,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:42,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:42,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928613237] [2021-03-11 22:45:42,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:42,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:42,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:42,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:42,727 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:42,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 50 transitions, 702 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:42,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:42,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:42,806 INFO L129 PetriNetUnfolder]: 34/416 cut-off events. [2021-03-11 22:45:42,806 INFO L130 PetriNetUnfolder]: For 3453/3485 co-relation queries the response was YES. [2021-03-11 22:45:42,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 416 events. 34/416 cut-off events. For 3453/3485 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3811 event pairs, 6 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1830. Up to 115 conditions per place. [2021-03-11 22:45:42,809 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 55 selfloop transitions, 24 changer transitions 4/93 dead transitions. [2021-03-11 22:45:42,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 1556 flow [2021-03-11 22:45:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:42,810 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:42,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:42,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,812 INFO L185 Difference]: Start difference. First operand has 82 places, 50 transitions, 702 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:42,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 1556 flow [2021-03-11 22:45:42,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 1498 flow, removed 18 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:42,824 INFO L241 Difference]: Finished difference. Result has 89 places, 66 transitions, 1081 flow [2021-03-11 22:45:42,824 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1081, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-03-11 22:45:42,825 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2021-03-11 22:45:42,825 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 1081 flow [2021-03-11 22:45:42,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:42,825 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:42,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 22:45:42,826 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:42,826 INFO L82 PathProgramCache]: Analyzing trace with hash 276657154, now seen corresponding path program 9 times [2021-03-11 22:45:42,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:42,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760170121] [2021-03-11 22:45:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:42,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:42,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:42,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:42,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:42,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:42,860 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:42,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:42,869 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:42,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:42,882 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:42,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760170121] [2021-03-11 22:45:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:42,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240473259] [2021-03-11 22:45:42,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:42,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:42,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:42,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:42,897 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:42,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 1081 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:42,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:42,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:42,980 INFO L129 PetriNetUnfolder]: 33/436 cut-off events. [2021-03-11 22:45:42,981 INFO L130 PetriNetUnfolder]: For 3835/3931 co-relation queries the response was YES. [2021-03-11 22:45:42,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 436 events. 33/436 cut-off events. For 3835/3931 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4136 event pairs, 21 based on Foata normal form. 8/426 useless extension candidates. Maximal degree in co-relation 1908. Up to 94 conditions per place. [2021-03-11 22:45:42,983 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 24 selfloop transitions, 40 changer transitions 3/77 dead transitions. [2021-03-11 22:45:42,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 77 transitions, 1341 flow [2021-03-11 22:45:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:42,984 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:42,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:42,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:42,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,985 INFO L185 Difference]: Start difference. First operand has 89 places, 66 transitions, 1081 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:42,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 77 transitions, 1341 flow [2021-03-11 22:45:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 77 transitions, 1310 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:42,996 INFO L241 Difference]: Finished difference. Result has 94 places, 67 transitions, 1170 flow [2021-03-11 22:45:42,996 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1170, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2021-03-11 22:45:42,996 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2021-03-11 22:45:42,996 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 1170 flow [2021-03-11 22:45:42,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:42,997 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:42,997 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:42,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 22:45:42,997 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1414925562, now seen corresponding path program 10 times [2021-03-11 22:45:42,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:42,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056286539] [2021-03-11 22:45:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:43,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:43,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:43,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:43,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:43,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:43,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:43,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:43,049 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:43,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:43,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056286539] [2021-03-11 22:45:43,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:43,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:43,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256736649] [2021-03-11 22:45:43,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:43,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:43,063 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:43,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 1170 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:43,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:43,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:43,141 INFO L129 PetriNetUnfolder]: 24/467 cut-off events. [2021-03-11 22:45:43,141 INFO L130 PetriNetUnfolder]: For 4467/4568 co-relation queries the response was YES. [2021-03-11 22:45:43,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 467 events. 24/467 cut-off events. For 4467/4568 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4645 event pairs, 19 based on Foata normal form. 8/455 useless extension candidates. Maximal degree in co-relation 2111. Up to 95 conditions per place. [2021-03-11 22:45:43,144 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 49 selfloop transitions, 31 changer transitions 4/94 dead transitions. [2021-03-11 22:45:43,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 94 transitions, 1785 flow [2021-03-11 22:45:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:43,145 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:43,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:43,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,146 INFO L185 Difference]: Start difference. First operand has 94 places, 67 transitions, 1170 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 94 transitions, 1785 flow [2021-03-11 22:45:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 1671 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:43,158 INFO L241 Difference]: Finished difference. Result has 98 places, 76 transitions, 1369 flow [2021-03-11 22:45:43,159 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1369, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2021-03-11 22:45:43,159 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2021-03-11 22:45:43,159 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 1369 flow [2021-03-11 22:45:43,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,159 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:43,159 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:43,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 22:45:43,159 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:43,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1776118300, now seen corresponding path program 11 times [2021-03-11 22:45:43,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:43,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079167965] [2021-03-11 22:45:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:43,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:43,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:43,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:43,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:43,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:43,213 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:43,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:43,226 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:43,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:43,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079167965] [2021-03-11 22:45:43,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:43,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:43,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673185588] [2021-03-11 22:45:43,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:43,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:43,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:43,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:43,239 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:43,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 1369 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:43,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:43,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:43,322 INFO L129 PetriNetUnfolder]: 21/485 cut-off events. [2021-03-11 22:45:43,322 INFO L130 PetriNetUnfolder]: For 4834/4970 co-relation queries the response was YES. [2021-03-11 22:45:43,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 485 events. 21/485 cut-off events. For 4834/4970 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4905 event pairs, 21 based on Foata normal form. 8/472 useless extension candidates. Maximal degree in co-relation 2224. Up to 95 conditions per place. [2021-03-11 22:45:43,324 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 39 changer transitions 2/96 dead transitions. [2021-03-11 22:45:43,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 1881 flow [2021-03-11 22:45:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:43,325 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:43,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:43,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,327 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,327 INFO L185 Difference]: Start difference. First operand has 98 places, 76 transitions, 1369 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:43,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 1881 flow [2021-03-11 22:45:43,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 1824 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:43,340 INFO L241 Difference]: Finished difference. Result has 104 places, 87 transitions, 1663 flow [2021-03-11 22:45:43,340 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1663, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2021-03-11 22:45:43,340 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2021-03-11 22:45:43,340 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 1663 flow [2021-03-11 22:45:43,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:43,341 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:43,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 22:45:43,341 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:43,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1888294854, now seen corresponding path program 12 times [2021-03-11 22:45:43,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:43,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350041706] [2021-03-11 22:45:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:43,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:43,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:43,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:43,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:43,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:43,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:43,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:43,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:43,419 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:43,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:43,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350041706] [2021-03-11 22:45:43,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:43,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:43,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832123305] [2021-03-11 22:45:43,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:43,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:43,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:43,433 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:43,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 1663 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:43,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:43,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:43,523 INFO L129 PetriNetUnfolder]: 21/479 cut-off events. [2021-03-11 22:45:43,523 INFO L130 PetriNetUnfolder]: For 5447/5594 co-relation queries the response was YES. [2021-03-11 22:45:43,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 479 events. 21/479 cut-off events. For 5447/5594 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4815 event pairs, 21 based on Foata normal form. 11/472 useless extension candidates. Maximal degree in co-relation 2307. Up to 93 conditions per place. [2021-03-11 22:45:43,525 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 29 selfloop transitions, 56 changer transitions 4/99 dead transitions. [2021-03-11 22:45:43,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 2039 flow [2021-03-11 22:45:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:43,526 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:43,527 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:43,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,529 INFO L185 Difference]: Start difference. First operand has 104 places, 87 transitions, 1663 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:43,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 2039 flow [2021-03-11 22:45:43,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 99 transitions, 1937 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:43,546 INFO L241 Difference]: Finished difference. Result has 107 places, 87 transitions, 1732 flow [2021-03-11 22:45:43,546 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1732, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2021-03-11 22:45:43,546 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2021-03-11 22:45:43,546 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 1732 flow [2021-03-11 22:45:43,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,546 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:43,547 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:43,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 22:45:43,547 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash 378138474, now seen corresponding path program 13 times [2021-03-11 22:45:43,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:43,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819064498] [2021-03-11 22:45:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:43,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:43,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:43,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:43,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:43,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:43,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:43,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:43,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:43,602 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:43,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:43,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819064498] [2021-03-11 22:45:43,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:43,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:43,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304997978] [2021-03-11 22:45:43,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:43,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:43,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:43,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:43,619 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:43,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 1732 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:43,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:43,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:43,698 INFO L129 PetriNetUnfolder]: 21/468 cut-off events. [2021-03-11 22:45:43,698 INFO L130 PetriNetUnfolder]: For 5525/5661 co-relation queries the response was YES. [2021-03-11 22:45:43,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 468 events. 21/468 cut-off events. For 5525/5661 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4680 event pairs, 21 based on Foata normal form. 12/464 useless extension candidates. Maximal degree in co-relation 2300. Up to 93 conditions per place. [2021-03-11 22:45:43,700 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 31 selfloop transitions, 54 changer transitions 2/97 dead transitions. [2021-03-11 22:45:43,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 97 transitions, 2075 flow [2021-03-11 22:45:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:43,701 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:43,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:43,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:43,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,702 INFO L185 Difference]: Start difference. First operand has 107 places, 87 transitions, 1732 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:43,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 97 transitions, 2075 flow [2021-03-11 22:45:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 97 transitions, 1961 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:43,716 INFO L241 Difference]: Finished difference. Result has 111 places, 89 transitions, 1833 flow [2021-03-11 22:45:43,716 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1833, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2021-03-11 22:45:43,716 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2021-03-11 22:45:43,717 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 1833 flow [2021-03-11 22:45:43,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,717 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:43,717 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:43,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 22:45:43,717 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash 249960294, now seen corresponding path program 14 times [2021-03-11 22:45:43,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:43,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034751923] [2021-03-11 22:45:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:43,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:43,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:43,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:43,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:43,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:43,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:43,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:43,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:43,760 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:43,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:43,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034751923] [2021-03-11 22:45:43,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:43,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:43,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864003266] [2021-03-11 22:45:43,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:43,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:43,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:43,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:43,774 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:43,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 1833 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:43,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:43,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:43,842 INFO L129 PetriNetUnfolder]: 21/462 cut-off events. [2021-03-11 22:45:43,842 INFO L130 PetriNetUnfolder]: For 5711/5857 co-relation queries the response was YES. [2021-03-11 22:45:43,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 462 events. 21/462 cut-off events. For 5711/5857 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4590 event pairs, 21 based on Foata normal form. 15/461 useless extension candidates. Maximal degree in co-relation 2305. Up to 93 conditions per place. [2021-03-11 22:45:43,844 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 27 selfloop transitions, 55 changer transitions 3/95 dead transitions. [2021-03-11 22:45:43,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 95 transitions, 2078 flow [2021-03-11 22:45:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:43,845 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:43,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:43,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:43,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:43,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:43,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,848 INFO L185 Difference]: Start difference. First operand has 111 places, 89 transitions, 1833 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:43,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 95 transitions, 2078 flow [2021-03-11 22:45:43,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 95 transitions, 1988 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:43,863 INFO L241 Difference]: Finished difference. Result has 114 places, 89 transitions, 1870 flow [2021-03-11 22:45:43,864 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1870, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2021-03-11 22:45:43,864 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2021-03-11 22:45:43,864 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 1870 flow [2021-03-11 22:45:43,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:43,864 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:43,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 22:45:43,864 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:43,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:43,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1859519708, now seen corresponding path program 15 times [2021-03-11 22:45:43,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:43,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843102462] [2021-03-11 22:45:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:43,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:43,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:43,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:43,884 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:43,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:43,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:43,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:43,901 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:43,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:43,913 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:43,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:43,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843102462] [2021-03-11 22:45:43,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:43,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:43,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717517839] [2021-03-11 22:45:43,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:43,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:43,927 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:43,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 1870 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:43,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:43,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:43,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,004 INFO L129 PetriNetUnfolder]: 21/455 cut-off events. [2021-03-11 22:45:44,005 INFO L130 PetriNetUnfolder]: For 5573/5709 co-relation queries the response was YES. [2021-03-11 22:45:44,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 455 events. 21/455 cut-off events. For 5573/5709 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4497 event pairs, 21 based on Foata normal form. 13/450 useless extension candidates. Maximal degree in co-relation 2301. Up to 93 conditions per place. [2021-03-11 22:45:44,006 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 54 changer transitions 3/95 dead transitions. [2021-03-11 22:45:44,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 95 transitions, 2125 flow [2021-03-11 22:45:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,009 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,010 INFO L185 Difference]: Start difference. First operand has 114 places, 89 transitions, 1870 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 95 transitions, 2125 flow [2021-03-11 22:45:44,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 95 transitions, 2000 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:44,026 INFO L241 Difference]: Finished difference. Result has 114 places, 89 transitions, 1876 flow [2021-03-11 22:45:44,026 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1876, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2021-03-11 22:45:44,026 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2021-03-11 22:45:44,026 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 1876 flow [2021-03-11 22:45:44,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,026 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,026 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 22:45:44,026 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1108018524, now seen corresponding path program 16 times [2021-03-11 22:45:44,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538962550] [2021-03-11 22:45:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:44,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:44,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:44,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:44,093 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:44,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:44,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538962550] [2021-03-11 22:45:44,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:44,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:44,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13128388] [2021-03-11 22:45:44,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:44,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:44,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:44,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:44,107 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:44,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 1876 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:44,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:44,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,178 INFO L129 PetriNetUnfolder]: 21/448 cut-off events. [2021-03-11 22:45:44,179 INFO L130 PetriNetUnfolder]: For 5212/5297 co-relation queries the response was YES. [2021-03-11 22:45:44,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 448 events. 21/448 cut-off events. For 5212/5297 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4433 event pairs, 17 based on Foata normal form. 9/440 useless extension candidates. Maximal degree in co-relation 2257. Up to 91 conditions per place. [2021-03-11 22:45:44,180 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 39 changer transitions 1/104 dead transitions. [2021-03-11 22:45:44,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 104 transitions, 2331 flow [2021-03-11 22:45:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,181 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,181 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,183 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,183 INFO L185 Difference]: Start difference. First operand has 114 places, 89 transitions, 1876 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 104 transitions, 2331 flow [2021-03-11 22:45:44,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 2213 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:44,198 INFO L241 Difference]: Finished difference. Result has 119 places, 95 transitions, 2006 flow [2021-03-11 22:45:44,198 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2006, PETRI_PLACES=119, PETRI_TRANSITIONS=95} [2021-03-11 22:45:44,198 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2021-03-11 22:45:44,198 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 95 transitions, 2006 flow [2021-03-11 22:45:44,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,201 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,201 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 22:45:44,201 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,201 INFO L82 PathProgramCache]: Analyzing trace with hash 92553244, now seen corresponding path program 17 times [2021-03-11 22:45:44,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202116308] [2021-03-11 22:45:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:44,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:44,237 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:44,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:44,252 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:44,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:44,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202116308] [2021-03-11 22:45:44,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:44,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:44,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889268996] [2021-03-11 22:45:44,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:44,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:44,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:44,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:44,266 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:44,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 95 transitions, 2006 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:44,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:44,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,327 INFO L129 PetriNetUnfolder]: 21/442 cut-off events. [2021-03-11 22:45:44,328 INFO L130 PetriNetUnfolder]: For 5590/5672 co-relation queries the response was YES. [2021-03-11 22:45:44,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 442 events. 21/442 cut-off events. For 5590/5672 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4346 event pairs, 17 based on Foata normal form. 8/433 useless extension candidates. Maximal degree in co-relation 2290. Up to 91 conditions per place. [2021-03-11 22:45:44,329 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 38 changer transitions 3/103 dead transitions. [2021-03-11 22:45:44,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 103 transitions, 2318 flow [2021-03-11 22:45:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,330 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,333 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,333 INFO L185 Difference]: Start difference. First operand has 119 places, 95 transitions, 2006 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 103 transitions, 2318 flow [2021-03-11 22:45:44,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 103 transitions, 2278 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-11 22:45:44,352 INFO L241 Difference]: Finished difference. Result has 124 places, 95 transitions, 2070 flow [2021-03-11 22:45:44,352 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2070, PETRI_PLACES=124, PETRI_TRANSITIONS=95} [2021-03-11 22:45:44,352 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2021-03-11 22:45:44,352 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 95 transitions, 2070 flow [2021-03-11 22:45:44,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,352 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,353 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 22:45:44,353 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash 815392130, now seen corresponding path program 18 times [2021-03-11 22:45:44,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319502040] [2021-03-11 22:45:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,379 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:44,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:44,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:44,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:44,400 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:44,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:44,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319502040] [2021-03-11 22:45:44,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:44,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:44,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144538188] [2021-03-11 22:45:44,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:44,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:44,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:44,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:44,413 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:44,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 95 transitions, 2070 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:44,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:44,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,485 INFO L129 PetriNetUnfolder]: 21/433 cut-off events. [2021-03-11 22:45:44,486 INFO L130 PetriNetUnfolder]: For 5738/5820 co-relation queries the response was YES. [2021-03-11 22:45:44,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 433 events. 21/433 cut-off events. For 5738/5820 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4230 event pairs, 17 based on Foata normal form. 8/424 useless extension candidates. Maximal degree in co-relation 2295. Up to 91 conditions per place. [2021-03-11 22:45:44,488 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 44 selfloop transitions, 44 changer transitions 2/100 dead transitions. [2021-03-11 22:45:44,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 100 transitions, 2302 flow [2021-03-11 22:45:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,489 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,490 INFO L185 Difference]: Start difference. First operand has 124 places, 95 transitions, 2070 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 100 transitions, 2302 flow [2021-03-11 22:45:44,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 2222 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:44,504 INFO L241 Difference]: Finished difference. Result has 126 places, 94 transitions, 2068 flow [2021-03-11 22:45:44,505 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2068, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2021-03-11 22:45:44,505 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2021-03-11 22:45:44,505 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 2068 flow [2021-03-11 22:45:44,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,513 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,513 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 22:45:44,514 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1624417716, now seen corresponding path program 19 times [2021-03-11 22:45:44,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315861982] [2021-03-11 22:45:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:44,544 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:44,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:44,556 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:44,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:44,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315861982] [2021-03-11 22:45:44,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:44,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:44,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969699642] [2021-03-11 22:45:44,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:44,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:44,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:44,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:44,572 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:44,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 2068 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:44,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:44,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,654 INFO L129 PetriNetUnfolder]: 17/451 cut-off events. [2021-03-11 22:45:44,655 INFO L130 PetriNetUnfolder]: For 6038/6120 co-relation queries the response was YES. [2021-03-11 22:45:44,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 451 events. 17/451 cut-off events. For 6038/6120 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4495 event pairs, 17 based on Foata normal form. 7/440 useless extension candidates. Maximal degree in co-relation 2378. Up to 90 conditions per place. [2021-03-11 22:45:44,656 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 37 changer transitions 2/113 dead transitions. [2021-03-11 22:45:44,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 113 transitions, 2677 flow [2021-03-11 22:45:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,657 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,658 INFO L185 Difference]: Start difference. First operand has 126 places, 94 transitions, 2068 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 113 transitions, 2677 flow [2021-03-11 22:45:44,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 113 transitions, 2583 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:44,676 INFO L241 Difference]: Finished difference. Result has 131 places, 99 transitions, 2215 flow [2021-03-11 22:45:44,676 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2215, PETRI_PLACES=131, PETRI_TRANSITIONS=99} [2021-03-11 22:45:44,676 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2021-03-11 22:45:44,676 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 99 transitions, 2215 flow [2021-03-11 22:45:44,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,676 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,676 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 22:45:44,677 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1091710728, now seen corresponding path program 20 times [2021-03-11 22:45:44,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695351905] [2021-03-11 22:45:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:44,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:44,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:44,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:44,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:44,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695351905] [2021-03-11 22:45:44,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:44,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:44,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009478362] [2021-03-11 22:45:44,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:44,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:44,737 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:44,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 99 transitions, 2215 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:44,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:44,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,810 INFO L129 PetriNetUnfolder]: 17/444 cut-off events. [2021-03-11 22:45:44,811 INFO L130 PetriNetUnfolder]: For 6392/6481 co-relation queries the response was YES. [2021-03-11 22:45:44,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 444 events. 17/444 cut-off events. For 6392/6481 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4405 event pairs, 17 based on Foata normal form. 8/437 useless extension candidates. Maximal degree in co-relation 2385. Up to 91 conditions per place. [2021-03-11 22:45:44,812 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 41 changer transitions 2/106 dead transitions. [2021-03-11 22:45:44,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 106 transitions, 2520 flow [2021-03-11 22:45:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,813 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,814 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,814 INFO L185 Difference]: Start difference. First operand has 131 places, 99 transitions, 2215 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 106 transitions, 2520 flow [2021-03-11 22:45:44,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 106 transitions, 2457 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:44,830 INFO L241 Difference]: Finished difference. Result has 135 places, 99 transitions, 2262 flow [2021-03-11 22:45:44,830 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2262, PETRI_PLACES=135, PETRI_TRANSITIONS=99} [2021-03-11 22:45:44,831 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2021-03-11 22:45:44,831 INFO L480 AbstractCegarLoop]: Abstraction has has 135 places, 99 transitions, 2262 flow [2021-03-11 22:45:44,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,831 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,831 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 22:45:44,831 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1228535336, now seen corresponding path program 21 times [2021-03-11 22:45:44,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004299819] [2021-03-11 22:45:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:44,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:44,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:44,868 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:44,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004299819] [2021-03-11 22:45:44,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:44,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627786948] [2021-03-11 22:45:44,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:44,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:44,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:44,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:44,881 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:44,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 99 transitions, 2262 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:44,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:44,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:44,954 INFO L129 PetriNetUnfolder]: 17/437 cut-off events. [2021-03-11 22:45:44,954 INFO L130 PetriNetUnfolder]: For 6662/6775 co-relation queries the response was YES. [2021-03-11 22:45:44,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 437 events. 17/437 cut-off events. For 6662/6775 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4291 event pairs, 17 based on Foata normal form. 12/432 useless extension candidates. Maximal degree in co-relation 2406. Up to 91 conditions per place. [2021-03-11 22:45:44,956 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 40 changer transitions 2/104 dead transitions. [2021-03-11 22:45:44,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 104 transitions, 2510 flow [2021-03-11 22:45:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:44,957 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:44,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:44,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:44,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,958 INFO L185 Difference]: Start difference. First operand has 135 places, 99 transitions, 2262 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:44,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 104 transitions, 2510 flow [2021-03-11 22:45:44,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 104 transitions, 2430 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:44,974 INFO L241 Difference]: Finished difference. Result has 137 places, 99 transitions, 2273 flow [2021-03-11 22:45:44,974 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2273, PETRI_PLACES=137, PETRI_TRANSITIONS=99} [2021-03-11 22:45:44,974 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2021-03-11 22:45:44,974 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 99 transitions, 2273 flow [2021-03-11 22:45:44,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:44,974 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:44,975 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:44,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 22:45:44,975 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash 250888672, now seen corresponding path program 22 times [2021-03-11 22:45:44,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:44,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594281481] [2021-03-11 22:45:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:44,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:44,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:44,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:44,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:44,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:44,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:45,002 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:45,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:45,014 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594281481] [2021-03-11 22:45:45,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625503282] [2021-03-11 22:45:45,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,027 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 99 transitions, 2273 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:45,100 INFO L129 PetriNetUnfolder]: 17/430 cut-off events. [2021-03-11 22:45:45,100 INFO L130 PetriNetUnfolder]: For 6501/6611 co-relation queries the response was YES. [2021-03-11 22:45:45,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 430 events. 17/430 cut-off events. For 6501/6611 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4204 event pairs, 17 based on Foata normal form. 8/421 useless extension candidates. Maximal degree in co-relation 2407. Up to 90 conditions per place. [2021-03-11 22:45:45,102 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 58 selfloop transitions, 39 changer transitions 2/109 dead transitions. [2021-03-11 22:45:45,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 109 transitions, 2666 flow [2021-03-11 22:45:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:45,103 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:45,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,104 INFO L185 Difference]: Start difference. First operand has 137 places, 99 transitions, 2273 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:45,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 109 transitions, 2666 flow [2021-03-11 22:45:45,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 109 transitions, 2601 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:45,121 INFO L241 Difference]: Finished difference. Result has 143 places, 102 transitions, 2409 flow [2021-03-11 22:45:45,121 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2409, PETRI_PLACES=143, PETRI_TRANSITIONS=102} [2021-03-11 22:45:45,121 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2021-03-11 22:45:45,121 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 102 transitions, 2409 flow [2021-03-11 22:45:45,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,122 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:45,122 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:45,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 22:45:45,122 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:45,122 INFO L82 PathProgramCache]: Analyzing trace with hash -604417982, now seen corresponding path program 23 times [2021-03-11 22:45:45,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:45,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80666303] [2021-03-11 22:45:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:45,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:45,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:45,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:45,142 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:45,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:45,152 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:45,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:45,164 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80666303] [2021-03-11 22:45:45,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309172168] [2021-03-11 22:45:45,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,177 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 102 transitions, 2409 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:45,262 INFO L129 PetriNetUnfolder]: 17/423 cut-off events. [2021-03-11 22:45:45,262 INFO L130 PetriNetUnfolder]: For 6847/6957 co-relation queries the response was YES. [2021-03-11 22:45:45,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 423 events. 17/423 cut-off events. For 6847/6957 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4112 event pairs, 17 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 2427. Up to 90 conditions per place. [2021-03-11 22:45:45,264 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 57 selfloop transitions, 38 changer transitions 2/107 dead transitions. [2021-03-11 22:45:45,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 107 transitions, 2664 flow [2021-03-11 22:45:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:45,265 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:45,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:45,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,266 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,266 INFO L185 Difference]: Start difference. First operand has 143 places, 102 transitions, 2409 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:45,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 107 transitions, 2664 flow [2021-03-11 22:45:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 107 transitions, 2579 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:45,286 INFO L241 Difference]: Finished difference. Result has 145 places, 102 transitions, 2410 flow [2021-03-11 22:45:45,286 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2410, PETRI_PLACES=145, PETRI_TRANSITIONS=102} [2021-03-11 22:45:45,286 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2021-03-11 22:45:45,286 INFO L480 AbstractCegarLoop]: Abstraction has has 145 places, 102 transitions, 2410 flow [2021-03-11 22:45:45,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,286 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:45,286 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:45,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 22:45:45,286 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1740453430, now seen corresponding path program 24 times [2021-03-11 22:45:45,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:45,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150570192] [2021-03-11 22:45:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:45,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:45,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:45,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:45,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:45,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:45,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:45,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:45,349 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150570192] [2021-03-11 22:45:45,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932492945] [2021-03-11 22:45:45,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,362 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 102 transitions, 2410 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:45,424 INFO L129 PetriNetUnfolder]: 17/416 cut-off events. [2021-03-11 22:45:45,424 INFO L130 PetriNetUnfolder]: For 6840/6953 co-relation queries the response was YES. [2021-03-11 22:45:45,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 416 events. 17/416 cut-off events. For 6840/6953 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4022 event pairs, 17 based on Foata normal form. 8/408 useless extension candidates. Maximal degree in co-relation 2395. Up to 90 conditions per place. [2021-03-11 22:45:45,426 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 49 selfloop transitions, 44 changer transitions 2/105 dead transitions. [2021-03-11 22:45:45,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 105 transitions, 2612 flow [2021-03-11 22:45:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:45,427 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:45,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:45,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,429 INFO L185 Difference]: Start difference. First operand has 145 places, 102 transitions, 2410 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:45,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 105 transitions, 2612 flow [2021-03-11 22:45:45,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 105 transitions, 2535 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:45,447 INFO L241 Difference]: Finished difference. Result has 147 places, 100 transitions, 2363 flow [2021-03-11 22:45:45,447 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2363, PETRI_PLACES=147, PETRI_TRANSITIONS=100} [2021-03-11 22:45:45,447 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2021-03-11 22:45:45,447 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 100 transitions, 2363 flow [2021-03-11 22:45:45,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,448 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:45,448 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:45,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 22:45:45,448 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1497381506, now seen corresponding path program 25 times [2021-03-11 22:45:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:45,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966859265] [2021-03-11 22:45:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:45,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:45,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:45,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:45,471 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:45,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:45,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:45,492 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966859265] [2021-03-11 22:45:45,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281183594] [2021-03-11 22:45:45,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,505 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 100 transitions, 2363 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:45,568 INFO L129 PetriNetUnfolder]: 17/409 cut-off events. [2021-03-11 22:45:45,568 INFO L130 PetriNetUnfolder]: For 6685/6798 co-relation queries the response was YES. [2021-03-11 22:45:45,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 409 events. 17/409 cut-off events. For 6685/6798 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3932 event pairs, 17 based on Foata normal form. 8/401 useless extension candidates. Maximal degree in co-relation 2365. Up to 90 conditions per place. [2021-03-11 22:45:45,574 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 46 selfloop transitions, 44 changer transitions 3/103 dead transitions. [2021-03-11 22:45:45,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 103 transitions, 2561 flow [2021-03-11 22:45:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:45,575 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:45,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:45,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,578 INFO L185 Difference]: Start difference. First operand has 147 places, 100 transitions, 2363 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 103 transitions, 2561 flow [2021-03-11 22:45:45,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 103 transitions, 2468 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:45,597 INFO L241 Difference]: Finished difference. Result has 148 places, 97 transitions, 2273 flow [2021-03-11 22:45:45,597 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2273, PETRI_PLACES=148, PETRI_TRANSITIONS=97} [2021-03-11 22:45:45,598 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2021-03-11 22:45:45,598 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 97 transitions, 2273 flow [2021-03-11 22:45:45,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,598 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:45,598 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:45,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 22:45:45,598 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:45,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:45,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1304321406, now seen corresponding path program 26 times [2021-03-11 22:45:45,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:45,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430194387] [2021-03-11 22:45:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:45,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:45,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:45,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:45,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:45,623 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:45,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:45,635 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430194387] [2021-03-11 22:45:45,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566306990] [2021-03-11 22:45:45,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,648 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 97 transitions, 2273 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:45,715 INFO L129 PetriNetUnfolder]: 17/400 cut-off events. [2021-03-11 22:45:45,715 INFO L130 PetriNetUnfolder]: For 6295/6411 co-relation queries the response was YES. [2021-03-11 22:45:45,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 400 events. 17/400 cut-off events. For 6295/6411 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3807 event pairs, 17 based on Foata normal form. 9/392 useless extension candidates. Maximal degree in co-relation 2296. Up to 87 conditions per place. [2021-03-11 22:45:45,717 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 58 selfloop transitions, 36 changer transitions 2/106 dead transitions. [2021-03-11 22:45:45,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 106 transitions, 2642 flow [2021-03-11 22:45:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:45,717 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:45,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:45,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,718 INFO L185 Difference]: Start difference. First operand has 148 places, 97 transitions, 2273 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:45,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 106 transitions, 2642 flow [2021-03-11 22:45:45,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 106 transitions, 2449 flow, removed 12 selfloop flow, removed 10 redundant places. [2021-03-11 22:45:45,734 INFO L241 Difference]: Finished difference. Result has 143 places, 97 transitions, 2185 flow [2021-03-11 22:45:45,734 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2185, PETRI_PLACES=143, PETRI_TRANSITIONS=97} [2021-03-11 22:45:45,735 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2021-03-11 22:45:45,735 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 97 transitions, 2185 flow [2021-03-11 22:45:45,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:45,735 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:45,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 22:45:45,735 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:45,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:45,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2096055204, now seen corresponding path program 27 times [2021-03-11 22:45:45,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:45,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871701693] [2021-03-11 22:45:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:45,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:45,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:45,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:45,751 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:45,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:45,762 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:45,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:45,774 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871701693] [2021-03-11 22:45:45,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383964572] [2021-03-11 22:45:45,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,787 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 97 transitions, 2185 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:45,861 INFO L129 PetriNetUnfolder]: 17/393 cut-off events. [2021-03-11 22:45:45,861 INFO L130 PetriNetUnfolder]: For 5669/5790 co-relation queries the response was YES. [2021-03-11 22:45:45,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 393 events. 17/393 cut-off events. For 5669/5790 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3713 event pairs, 17 based on Foata normal form. 8/385 useless extension candidates. Maximal degree in co-relation 2204. Up to 87 conditions per place. [2021-03-11 22:45:45,862 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 36 changer transitions 2/104 dead transitions. [2021-03-11 22:45:45,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 104 transitions, 2482 flow [2021-03-11 22:45:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:45,863 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:45,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:45,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:45,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,864 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,864 INFO L185 Difference]: Start difference. First operand has 143 places, 97 transitions, 2185 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:45,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 104 transitions, 2482 flow [2021-03-11 22:45:45,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 104 transitions, 2410 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:45,879 INFO L241 Difference]: Finished difference. Result has 146 places, 99 transitions, 2257 flow [2021-03-11 22:45:45,880 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2257, PETRI_PLACES=146, PETRI_TRANSITIONS=99} [2021-03-11 22:45:45,880 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2021-03-11 22:45:45,880 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 99 transitions, 2257 flow [2021-03-11 22:45:45,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:45,880 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:45,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 22:45:45,880 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1602540334, now seen corresponding path program 28 times [2021-03-11 22:45:45,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:45,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094470499] [2021-03-11 22:45:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:45,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:45,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:45,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:45,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:45,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:45,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:45,910 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:45,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:45,923 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:45,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:45,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094470499] [2021-03-11 22:45:45,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:45,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:45,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975237999] [2021-03-11 22:45:45,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:45,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:45,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:45,936 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:45,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 99 transitions, 2257 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:45,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:45,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:45,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,004 INFO L129 PetriNetUnfolder]: 17/386 cut-off events. [2021-03-11 22:45:46,004 INFO L130 PetriNetUnfolder]: For 5810/5926 co-relation queries the response was YES. [2021-03-11 22:45:46,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 386 events. 17/386 cut-off events. For 5810/5926 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3619 event pairs, 17 based on Foata normal form. 8/380 useless extension candidates. Maximal degree in co-relation 2190. Up to 87 conditions per place. [2021-03-11 22:45:46,006 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 36 changer transitions 3/102 dead transitions. [2021-03-11 22:45:46,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 102 transitions, 2453 flow [2021-03-11 22:45:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,007 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,007 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,008 INFO L185 Difference]: Start difference. First operand has 146 places, 99 transitions, 2257 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 102 transitions, 2453 flow [2021-03-11 22:45:46,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 102 transitions, 2390 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:46,023 INFO L241 Difference]: Finished difference. Result has 148 places, 96 transitions, 2193 flow [2021-03-11 22:45:46,023 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2193, PETRI_PLACES=148, PETRI_TRANSITIONS=96} [2021-03-11 22:45:46,023 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2021-03-11 22:45:46,023 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 96 transitions, 2193 flow [2021-03-11 22:45:46,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:46,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:46,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 22:45:46,024 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:46,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:46,024 INFO L82 PathProgramCache]: Analyzing trace with hash 185083590, now seen corresponding path program 29 times [2021-03-11 22:45:46,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:46,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900968074] [2021-03-11 22:45:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:46,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:46,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:46,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:46,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:46,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:46,048 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:46,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:46,060 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:46,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:46,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900968074] [2021-03-11 22:45:46,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:46,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:46,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445855456] [2021-03-11 22:45:46,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:46,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:46,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:46,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:46,074 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:46,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 96 transitions, 2193 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:46,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:46,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,141 INFO L129 PetriNetUnfolder]: 17/378 cut-off events. [2021-03-11 22:45:46,141 INFO L130 PetriNetUnfolder]: For 5604/5723 co-relation queries the response was YES. [2021-03-11 22:45:46,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 378 events. 17/378 cut-off events. For 5604/5723 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3508 event pairs, 17 based on Foata normal form. 9/371 useless extension candidates. Maximal degree in co-relation 2164. Up to 87 conditions per place. [2021-03-11 22:45:46,143 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 33 changer transitions 3/99 dead transitions. [2021-03-11 22:45:46,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 99 transitions, 2383 flow [2021-03-11 22:45:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,143 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,145 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,145 INFO L185 Difference]: Start difference. First operand has 148 places, 96 transitions, 2193 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 99 transitions, 2383 flow [2021-03-11 22:45:46,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 99 transitions, 2311 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:46,160 INFO L241 Difference]: Finished difference. Result has 150 places, 93 transitions, 2115 flow [2021-03-11 22:45:46,160 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2115, PETRI_PLACES=150, PETRI_TRANSITIONS=93} [2021-03-11 22:45:46,161 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2021-03-11 22:45:46,161 INFO L480 AbstractCegarLoop]: Abstraction has has 150 places, 93 transitions, 2115 flow [2021-03-11 22:45:46,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,161 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:46,161 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:46,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 22:45:46,161 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:46,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:46,162 INFO L82 PathProgramCache]: Analyzing trace with hash 445425734, now seen corresponding path program 30 times [2021-03-11 22:45:46,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:46,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126085233] [2021-03-11 22:45:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:46,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:46,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:46,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:46,193 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:46,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:46,215 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:46,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:46,232 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:46,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:46,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126085233] [2021-03-11 22:45:46,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:46,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:46,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183288346] [2021-03-11 22:45:46,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:46,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:46,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:46,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:46,252 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:46,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 93 transitions, 2115 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:46,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:46,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,319 INFO L129 PetriNetUnfolder]: 14/442 cut-off events. [2021-03-11 22:45:46,319 INFO L130 PetriNetUnfolder]: For 5979/6016 co-relation queries the response was YES. [2021-03-11 22:45:46,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 442 events. 14/442 cut-off events. For 5979/6016 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4393 event pairs, 5 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2375. Up to 96 conditions per place. [2021-03-11 22:45:46,320 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 47 changer transitions 2/121 dead transitions. [2021-03-11 22:45:46,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 121 transitions, 2929 flow [2021-03-11 22:45:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,322 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,325 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,325 INFO L185 Difference]: Start difference. First operand has 150 places, 93 transitions, 2115 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 121 transitions, 2929 flow [2021-03-11 22:45:46,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 121 transitions, 2775 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:46,341 INFO L241 Difference]: Finished difference. Result has 154 places, 99 transitions, 2315 flow [2021-03-11 22:45:46,341 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2315, PETRI_PLACES=154, PETRI_TRANSITIONS=99} [2021-03-11 22:45:46,341 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2021-03-11 22:45:46,341 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 99 transitions, 2315 flow [2021-03-11 22:45:46,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:46,341 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:46,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 22:45:46,341 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:46,342 INFO L82 PathProgramCache]: Analyzing trace with hash 397897764, now seen corresponding path program 31 times [2021-03-11 22:45:46,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:46,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583375293] [2021-03-11 22:45:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:46,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:46,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:46,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:46,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:46,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:46,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:46,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:46,390 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:46,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:46,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583375293] [2021-03-11 22:45:46,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:46,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:46,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224034697] [2021-03-11 22:45:46,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:46,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:46,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:46,403 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:46,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 99 transitions, 2315 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:46,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:46,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,473 INFO L129 PetriNetUnfolder]: 13/482 cut-off events. [2021-03-11 22:45:46,474 INFO L130 PetriNetUnfolder]: For 7112/7124 co-relation queries the response was YES. [2021-03-11 22:45:46,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 482 events. 13/482 cut-off events. For 7112/7124 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4930 event pairs, 2 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2634. Up to 110 conditions per place. [2021-03-11 22:45:46,475 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 73 selfloop transitions, 47 changer transitions 2/132 dead transitions. [2021-03-11 22:45:46,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 132 transitions, 3247 flow [2021-03-11 22:45:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,476 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,477 INFO L185 Difference]: Start difference. First operand has 154 places, 99 transitions, 2315 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 132 transitions, 3247 flow [2021-03-11 22:45:46,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 132 transitions, 3194 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:46,505 INFO L241 Difference]: Finished difference. Result has 161 places, 108 transitions, 2656 flow [2021-03-11 22:45:46,505 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2656, PETRI_PLACES=161, PETRI_TRANSITIONS=108} [2021-03-11 22:45:46,505 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2021-03-11 22:45:46,505 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 108 transitions, 2656 flow [2021-03-11 22:45:46,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,505 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:46,505 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:46,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 22:45:46,505 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash 693267428, now seen corresponding path program 32 times [2021-03-11 22:45:46,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:46,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386734731] [2021-03-11 22:45:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:46,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:46,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:46,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:46,521 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:46,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:46,533 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:46,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:46,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:46,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:46,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386734731] [2021-03-11 22:45:46,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:46,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:46,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712890056] [2021-03-11 22:45:46,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:46,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:46,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:46,561 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:46,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 108 transitions, 2656 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:46,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:46,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,638 INFO L129 PetriNetUnfolder]: 10/504 cut-off events. [2021-03-11 22:45:46,638 INFO L130 PetriNetUnfolder]: For 8351/8371 co-relation queries the response was YES. [2021-03-11 22:45:46,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 504 events. 10/504 cut-off events. For 8351/8371 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5250 event pairs, 6 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 2845. Up to 110 conditions per place. [2021-03-11 22:45:46,641 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 56 changer transitions 2/138 dead transitions. [2021-03-11 22:45:46,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 138 transitions, 3568 flow [2021-03-11 22:45:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,642 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,642 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,643 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,643 INFO L185 Difference]: Start difference. First operand has 161 places, 108 transitions, 2656 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 138 transitions, 3568 flow [2021-03-11 22:45:46,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 138 transitions, 3477 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:46,666 INFO L241 Difference]: Finished difference. Result has 167 places, 115 transitions, 2953 flow [2021-03-11 22:45:46,666 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2953, PETRI_PLACES=167, PETRI_TRANSITIONS=115} [2021-03-11 22:45:46,666 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2021-03-11 22:45:46,666 INFO L480 AbstractCegarLoop]: Abstraction has has 167 places, 115 transitions, 2953 flow [2021-03-11 22:45:46,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:46,667 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:46,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 22:45:46,667 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:46,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1619040868, now seen corresponding path program 33 times [2021-03-11 22:45:46,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:46,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523484788] [2021-03-11 22:45:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:46,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:46,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:46,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:46,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:46,694 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:46,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:46,702 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:46,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:46,717 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:46,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:46,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523484788] [2021-03-11 22:45:46,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:46,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:46,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287074907] [2021-03-11 22:45:46,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:46,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:46,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:46,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:46,733 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:46,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 115 transitions, 2953 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:46,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:46,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,813 INFO L129 PetriNetUnfolder]: 10/496 cut-off events. [2021-03-11 22:45:46,813 INFO L130 PetriNetUnfolder]: For 9381/9433 co-relation queries the response was YES. [2021-03-11 22:45:46,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 496 events. 10/496 cut-off events. For 9381/9433 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5153 event pairs, 4 based on Foata normal form. 5/491 useless extension candidates. Maximal degree in co-relation 2931. Up to 95 conditions per place. [2021-03-11 22:45:46,817 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 52 changer transitions 2/125 dead transitions. [2021-03-11 22:45:46,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 125 transitions, 3357 flow [2021-03-11 22:45:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,819 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,820 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,820 INFO L185 Difference]: Start difference. First operand has 167 places, 115 transitions, 2953 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 125 transitions, 3357 flow [2021-03-11 22:45:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 125 transitions, 3301 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:46,846 INFO L241 Difference]: Finished difference. Result has 171 places, 115 transitions, 3028 flow [2021-03-11 22:45:46,846 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3028, PETRI_PLACES=171, PETRI_TRANSITIONS=115} [2021-03-11 22:45:46,847 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2021-03-11 22:45:46,847 INFO L480 AbstractCegarLoop]: Abstraction has has 171 places, 115 transitions, 3028 flow [2021-03-11 22:45:46,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,847 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:46,848 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:46,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 22:45:46,848 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:46,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1446153956, now seen corresponding path program 34 times [2021-03-11 22:45:46,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:46,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876280828] [2021-03-11 22:45:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:46,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:46,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:46,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:46,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:46,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:46,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:46,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:46,874 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:46,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:46,886 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:46,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:46,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876280828] [2021-03-11 22:45:46,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:46,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:46,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667375543] [2021-03-11 22:45:46,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:46,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:46,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:46,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:46,900 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:46,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 115 transitions, 3028 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:46,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:46,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:46,989 INFO L129 PetriNetUnfolder]: 10/491 cut-off events. [2021-03-11 22:45:46,989 INFO L130 PetriNetUnfolder]: For 9846/9924 co-relation queries the response was YES. [2021-03-11 22:45:46,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3030 conditions, 491 events. 10/491 cut-off events. For 9846/9924 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5072 event pairs, 4 based on Foata normal form. 12/494 useless extension candidates. Maximal degree in co-relation 2973. Up to 95 conditions per place. [2021-03-11 22:45:46,991 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 51 changer transitions 1/123 dead transitions. [2021-03-11 22:45:46,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 123 transitions, 3377 flow [2021-03-11 22:45:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:46,992 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:46,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:46,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:46,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:46,993 INFO L185 Difference]: Start difference. First operand has 171 places, 115 transitions, 3028 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:46,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 123 transitions, 3377 flow [2021-03-11 22:45:47,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 123 transitions, 3262 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:47,017 INFO L241 Difference]: Finished difference. Result has 173 places, 115 transitions, 3032 flow [2021-03-11 22:45:47,017 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3032, PETRI_PLACES=173, PETRI_TRANSITIONS=115} [2021-03-11 22:45:47,017 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2021-03-11 22:45:47,017 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 115 transitions, 3032 flow [2021-03-11 22:45:47,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,017 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:47,018 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:47,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 22:45:47,018 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:47,018 INFO L82 PathProgramCache]: Analyzing trace with hash -342146584, now seen corresponding path program 35 times [2021-03-11 22:45:47,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:47,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506807372] [2021-03-11 22:45:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:47,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:47,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:47,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:47,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:47,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:47,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:47,047 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:47,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:47,061 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:47,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:47,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506807372] [2021-03-11 22:45:47,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:47,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:47,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724628658] [2021-03-11 22:45:47,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:47,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:47,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:47,076 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:47,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 115 transitions, 3032 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:47,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:47,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:47,187 INFO L129 PetriNetUnfolder]: 10/486 cut-off events. [2021-03-11 22:45:47,187 INFO L130 PetriNetUnfolder]: For 9648/9726 co-relation queries the response was YES. [2021-03-11 22:45:47,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 486 events. 10/486 cut-off events. For 9648/9726 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5010 event pairs, 4 based on Foata normal form. 12/489 useless extension candidates. Maximal degree in co-relation 2956. Up to 95 conditions per place. [2021-03-11 22:45:47,189 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 50 changer transitions 1/122 dead transitions. [2021-03-11 22:45:47,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 122 transitions, 3347 flow [2021-03-11 22:45:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:47,190 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:47,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:47,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,191 INFO L185 Difference]: Start difference. First operand has 173 places, 115 transitions, 3032 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:47,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 122 transitions, 3347 flow [2021-03-11 22:45:47,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 122 transitions, 3286 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:47,219 INFO L241 Difference]: Finished difference. Result has 176 places, 115 transitions, 3075 flow [2021-03-11 22:45:47,219 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3075, PETRI_PLACES=176, PETRI_TRANSITIONS=115} [2021-03-11 22:45:47,219 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 144 predicate places. [2021-03-11 22:45:47,219 INFO L480 AbstractCegarLoop]: Abstraction has has 176 places, 115 transitions, 3075 flow [2021-03-11 22:45:47,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,219 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:47,220 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:47,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 22:45:47,220 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1078593632, now seen corresponding path program 36 times [2021-03-11 22:45:47,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:47,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98423362] [2021-03-11 22:45:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:47,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:47,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:47,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:47,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:47,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:47,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:47,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:47,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:47,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:47,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:47,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98423362] [2021-03-11 22:45:47,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:47,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:47,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18529760] [2021-03-11 22:45:47,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:47,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:47,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:47,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:47,286 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:47,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 115 transitions, 3075 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:47,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:47,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:47,374 INFO L129 PetriNetUnfolder]: 10/482 cut-off events. [2021-03-11 22:45:47,374 INFO L130 PetriNetUnfolder]: For 9718/9770 co-relation queries the response was YES. [2021-03-11 22:45:47,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 482 events. 10/482 cut-off events. For 9718/9770 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4956 event pairs, 4 based on Foata normal form. 5/478 useless extension candidates. Maximal degree in co-relation 2979. Up to 95 conditions per place. [2021-03-11 22:45:47,375 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 60 selfloop transitions, 50 changer transitions 1/121 dead transitions. [2021-03-11 22:45:47,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 121 transitions, 3363 flow [2021-03-11 22:45:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:47,378 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:47,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:47,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,379 INFO L185 Difference]: Start difference. First operand has 176 places, 115 transitions, 3075 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:47,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 121 transitions, 3363 flow [2021-03-11 22:45:47,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 121 transitions, 3223 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:47,404 INFO L241 Difference]: Finished difference. Result has 177 places, 115 transitions, 3052 flow [2021-03-11 22:45:47,404 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3052, PETRI_PLACES=177, PETRI_TRANSITIONS=115} [2021-03-11 22:45:47,404 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2021-03-11 22:45:47,404 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 115 transitions, 3052 flow [2021-03-11 22:45:47,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,405 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:47,405 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:47,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 22:45:47,405 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1584908990, now seen corresponding path program 37 times [2021-03-11 22:45:47,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:47,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176042295] [2021-03-11 22:45:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:47,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:47,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:47,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:47,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:47,425 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:47,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:47,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:47,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:47,453 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:47,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:47,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176042295] [2021-03-11 22:45:47,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:47,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:47,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752116840] [2021-03-11 22:45:47,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:47,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:47,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:47,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:47,466 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:47,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 115 transitions, 3052 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:47,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:47,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:47,539 INFO L129 PetriNetUnfolder]: 10/477 cut-off events. [2021-03-11 22:45:47,539 INFO L130 PetriNetUnfolder]: For 9812/9882 co-relation queries the response was YES. [2021-03-11 22:45:47,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 477 events. 10/477 cut-off events. For 9812/9882 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4883 event pairs, 4 based on Foata normal form. 7/476 useless extension candidates. Maximal degree in co-relation 2951. Up to 109 conditions per place. [2021-03-11 22:45:47,541 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 71 selfloop transitions, 52 changer transitions 5/138 dead transitions. [2021-03-11 22:45:47,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 138 transitions, 3862 flow [2021-03-11 22:45:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:47,542 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:47,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:47,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,543 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,543 INFO L185 Difference]: Start difference. First operand has 177 places, 115 transitions, 3052 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:47,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 138 transitions, 3862 flow [2021-03-11 22:45:47,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 138 transitions, 3760 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:47,570 INFO L241 Difference]: Finished difference. Result has 183 places, 120 transitions, 3283 flow [2021-03-11 22:45:47,570 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3283, PETRI_PLACES=183, PETRI_TRANSITIONS=120} [2021-03-11 22:45:47,570 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2021-03-11 22:45:47,570 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 120 transitions, 3283 flow [2021-03-11 22:45:47,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,570 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:47,570 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:47,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 22:45:47,570 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:47,571 INFO L82 PathProgramCache]: Analyzing trace with hash 573217636, now seen corresponding path program 38 times [2021-03-11 22:45:47,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:47,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600383509] [2021-03-11 22:45:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:47,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:47,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:47,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:47,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:47,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:47,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:47,596 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:47,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:47,608 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:47,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:47,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600383509] [2021-03-11 22:45:47,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:47,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:47,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077573946] [2021-03-11 22:45:47,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:47,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:47,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:47,622 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:47,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 120 transitions, 3283 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:47,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:47,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:47,710 INFO L129 PetriNetUnfolder]: 10/463 cut-off events. [2021-03-11 22:45:47,710 INFO L130 PetriNetUnfolder]: For 10181/10251 co-relation queries the response was YES. [2021-03-11 22:45:47,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 463 events. 10/463 cut-off events. For 10181/10251 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4711 event pairs, 4 based on Foata normal form. 8/463 useless extension candidates. Maximal degree in co-relation 2917. Up to 94 conditions per place. [2021-03-11 22:45:47,711 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 49 changer transitions 3/124 dead transitions. [2021-03-11 22:45:47,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 124 transitions, 3537 flow [2021-03-11 22:45:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:47,712 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:47,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:47,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,713 INFO L185 Difference]: Start difference. First operand has 183 places, 120 transitions, 3283 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:47,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 124 transitions, 3537 flow [2021-03-11 22:45:47,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 124 transitions, 3453 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:47,741 INFO L241 Difference]: Finished difference. Result has 186 places, 117 transitions, 3201 flow [2021-03-11 22:45:47,742 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3201, PETRI_PLACES=186, PETRI_TRANSITIONS=117} [2021-03-11 22:45:47,742 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2021-03-11 22:45:47,742 INFO L480 AbstractCegarLoop]: Abstraction has has 186 places, 117 transitions, 3201 flow [2021-03-11 22:45:47,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,742 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:47,742 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:47,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 22:45:47,742 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1464427932, now seen corresponding path program 39 times [2021-03-11 22:45:47,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:47,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588033929] [2021-03-11 22:45:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:47,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:47,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:47,753 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:47,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:47,764 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:47,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:47,774 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:47,787 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:47,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:47,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588033929] [2021-03-11 22:45:47,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:47,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:47,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621767223] [2021-03-11 22:45:47,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:47,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:47,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:47,801 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:47,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 117 transitions, 3201 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:47,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:47,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:47,892 INFO L129 PetriNetUnfolder]: 10/450 cut-off events. [2021-03-11 22:45:47,892 INFO L130 PetriNetUnfolder]: For 9608/9641 co-relation queries the response was YES. [2021-03-11 22:45:47,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 450 events. 10/450 cut-off events. For 9608/9641 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4537 event pairs, 4 based on Foata normal form. 5/449 useless extension candidates. Maximal degree in co-relation 2839. Up to 104 conditions per place. [2021-03-11 22:45:47,894 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 52 changer transitions 2/128 dead transitions. [2021-03-11 22:45:47,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 128 transitions, 3667 flow [2021-03-11 22:45:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:47,894 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:47,894 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:47,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:47,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,896 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,896 INFO L185 Difference]: Start difference. First operand has 186 places, 117 transitions, 3201 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:47,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 128 transitions, 3667 flow [2021-03-11 22:45:47,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 128 transitions, 3566 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:47,923 INFO L241 Difference]: Finished difference. Result has 187 places, 121 transitions, 3376 flow [2021-03-11 22:45:47,923 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3376, PETRI_PLACES=187, PETRI_TRANSITIONS=121} [2021-03-11 22:45:47,925 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2021-03-11 22:45:47,925 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 121 transitions, 3376 flow [2021-03-11 22:45:47,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,925 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:47,925 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:47,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 22:45:47,925 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:47,925 INFO L82 PathProgramCache]: Analyzing trace with hash 496759520, now seen corresponding path program 40 times [2021-03-11 22:45:47,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:47,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201106234] [2021-03-11 22:45:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:47,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:47,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:47,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:47,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:47,951 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:47,960 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:47,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:47,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:47,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:47,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201106234] [2021-03-11 22:45:47,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:47,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:47,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291121169] [2021-03-11 22:45:47,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:47,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:47,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:47,992 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:47,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 121 transitions, 3376 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:47,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:47,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:47,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:48,064 INFO L129 PetriNetUnfolder]: 10/445 cut-off events. [2021-03-11 22:45:48,064 INFO L130 PetriNetUnfolder]: For 9807/9840 co-relation queries the response was YES. [2021-03-11 22:45:48,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 445 events. 10/445 cut-off events. For 9807/9840 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4459 event pairs, 4 based on Foata normal form. 5/445 useless extension candidates. Maximal degree in co-relation 2850. Up to 104 conditions per place. [2021-03-11 22:45:48,066 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 49 changer transitions 3/126 dead transitions. [2021-03-11 22:45:48,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 126 transitions, 3648 flow [2021-03-11 22:45:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:48,066 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:48,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:48,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,068 INFO L185 Difference]: Start difference. First operand has 187 places, 121 transitions, 3376 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:48,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 126 transitions, 3648 flow [2021-03-11 22:45:48,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 126 transitions, 3558 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:48,094 INFO L241 Difference]: Finished difference. Result has 190 places, 118 transitions, 3298 flow [2021-03-11 22:45:48,094 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3298, PETRI_PLACES=190, PETRI_TRANSITIONS=118} [2021-03-11 22:45:48,095 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2021-03-11 22:45:48,095 INFO L480 AbstractCegarLoop]: Abstraction has has 190 places, 118 transitions, 3298 flow [2021-03-11 22:45:48,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,095 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:48,095 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:48,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 22:45:48,095 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:48,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:48,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1134594852, now seen corresponding path program 41 times [2021-03-11 22:45:48,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:48,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140744473] [2021-03-11 22:45:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:48,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:48,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:48,107 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:48,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:48,121 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:48,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:48,138 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:48,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:48,155 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:48,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:48,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140744473] [2021-03-11 22:45:48,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:48,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:48,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426249620] [2021-03-11 22:45:48,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:48,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:48,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:48,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:48,170 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:48,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 118 transitions, 3298 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:48,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:48,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:48,239 INFO L129 PetriNetUnfolder]: 10/436 cut-off events. [2021-03-11 22:45:48,240 INFO L130 PetriNetUnfolder]: For 9644/9677 co-relation queries the response was YES. [2021-03-11 22:45:48,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 436 events. 10/436 cut-off events. For 9644/9677 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4316 event pairs, 4 based on Foata normal form. 5/436 useless extension candidates. Maximal degree in co-relation 2813. Up to 104 conditions per place. [2021-03-11 22:45:48,241 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 46 changer transitions 3/125 dead transitions. [2021-03-11 22:45:48,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 125 transitions, 3648 flow [2021-03-11 22:45:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:48,242 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:48,242 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:48,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:48,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:48,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:48,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,244 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,244 INFO L185 Difference]: Start difference. First operand has 190 places, 118 transitions, 3298 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 125 transitions, 3648 flow [2021-03-11 22:45:48,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 125 transitions, 3546 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:48,270 INFO L241 Difference]: Finished difference. Result has 193 places, 117 transitions, 3302 flow [2021-03-11 22:45:48,270 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3302, PETRI_PLACES=193, PETRI_TRANSITIONS=117} [2021-03-11 22:45:48,270 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2021-03-11 22:45:48,270 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 117 transitions, 3302 flow [2021-03-11 22:45:48,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:48,271 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:48,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 22:45:48,271 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash 597721406, now seen corresponding path program 42 times [2021-03-11 22:45:48,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:48,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056608263] [2021-03-11 22:45:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:48,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:48,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:48,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:48,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:48,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:48,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:48,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:48,314 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:48,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:48,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056608263] [2021-03-11 22:45:48,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:48,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:48,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164705526] [2021-03-11 22:45:48,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:48,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:48,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:48,327 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:48,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 117 transitions, 3302 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:48,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:48,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:48,424 INFO L129 PetriNetUnfolder]: 4/538 cut-off events. [2021-03-11 22:45:48,425 INFO L130 PetriNetUnfolder]: For 12020/12057 co-relation queries the response was YES. [2021-03-11 22:45:48,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 538 events. 4/538 cut-off events. For 12020/12057 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5721 event pairs, 4 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 3391. Up to 118 conditions per place. [2021-03-11 22:45:48,426 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 86 selfloop transitions, 52 changer transitions 2/150 dead transitions. [2021-03-11 22:45:48,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 150 transitions, 4567 flow [2021-03-11 22:45:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:48,427 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:48,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:48,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,428 INFO L185 Difference]: Start difference. First operand has 193 places, 117 transitions, 3302 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:48,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 150 transitions, 4567 flow [2021-03-11 22:45:48,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 150 transitions, 4431 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:48,460 INFO L241 Difference]: Finished difference. Result has 197 places, 128 transitions, 3746 flow [2021-03-11 22:45:48,461 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3746, PETRI_PLACES=197, PETRI_TRANSITIONS=128} [2021-03-11 22:45:48,461 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 165 predicate places. [2021-03-11 22:45:48,461 INFO L480 AbstractCegarLoop]: Abstraction has has 197 places, 128 transitions, 3746 flow [2021-03-11 22:45:48,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,461 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:48,461 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:48,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 22:45:48,461 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 421796960, now seen corresponding path program 43 times [2021-03-11 22:45:48,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:48,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56833039] [2021-03-11 22:45:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:48,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:48,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:48,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:48,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:48,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:48,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:48,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:48,504 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:48,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:48,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56833039] [2021-03-11 22:45:48,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:48,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:48,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215735596] [2021-03-11 22:45:48,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:48,517 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:48,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 128 transitions, 3746 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:48,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:48,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:48,606 INFO L129 PetriNetUnfolder]: 4/530 cut-off events. [2021-03-11 22:45:48,607 INFO L130 PetriNetUnfolder]: For 12574/12630 co-relation queries the response was YES. [2021-03-11 22:45:48,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 530 events. 4/530 cut-off events. For 12574/12630 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5589 event pairs, 1 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 3397. Up to 115 conditions per place. [2021-03-11 22:45:48,608 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 96 selfloop transitions, 50 changer transitions 2/158 dead transitions. [2021-03-11 22:45:48,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 158 transitions, 4842 flow [2021-03-11 22:45:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:48,609 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:48,609 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:48,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,610 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,610 INFO L185 Difference]: Start difference. First operand has 197 places, 128 transitions, 3746 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:48,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 158 transitions, 4842 flow [2021-03-11 22:45:48,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 158 transitions, 4760 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:48,644 INFO L241 Difference]: Finished difference. Result has 203 places, 139 transitions, 4193 flow [2021-03-11 22:45:48,644 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4193, PETRI_PLACES=203, PETRI_TRANSITIONS=139} [2021-03-11 22:45:48,645 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2021-03-11 22:45:48,645 INFO L480 AbstractCegarLoop]: Abstraction has has 203 places, 139 transitions, 4193 flow [2021-03-11 22:45:48,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,645 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:48,645 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:48,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 22:45:48,645 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash -212786374, now seen corresponding path program 44 times [2021-03-11 22:45:48,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:48,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980586827] [2021-03-11 22:45:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:48,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:48,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:48,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:48,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:48,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:48,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:48,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:48,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:48,693 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:48,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:48,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980586827] [2021-03-11 22:45:48,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:48,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:48,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259418260] [2021-03-11 22:45:48,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:48,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:48,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:48,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:48,707 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:48,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 139 transitions, 4193 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:48,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:48,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:48,803 INFO L129 PetriNetUnfolder]: 4/522 cut-off events. [2021-03-11 22:45:48,803 INFO L130 PetriNetUnfolder]: For 13409/13475 co-relation queries the response was YES. [2021-03-11 22:45:48,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3511 conditions, 522 events. 4/522 cut-off events. For 13409/13475 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5500 event pairs, 4 based on Foata normal form. 8/525 useless extension candidates. Maximal degree in co-relation 3443. Up to 117 conditions per place. [2021-03-11 22:45:48,805 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 64 changer transitions 2/146 dead transitions. [2021-03-11 22:45:48,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 146 transitions, 4594 flow [2021-03-11 22:45:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:48,806 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:48,806 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:48,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:48,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,807 INFO L185 Difference]: Start difference. First operand has 203 places, 139 transitions, 4193 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 146 transitions, 4594 flow [2021-03-11 22:45:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 146 transitions, 4553 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:48,844 INFO L241 Difference]: Finished difference. Result has 208 places, 140 transitions, 4351 flow [2021-03-11 22:45:48,845 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4351, PETRI_PLACES=208, PETRI_TRANSITIONS=140} [2021-03-11 22:45:48,845 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2021-03-11 22:45:48,845 INFO L480 AbstractCegarLoop]: Abstraction has has 208 places, 140 transitions, 4351 flow [2021-03-11 22:45:48,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,845 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:48,845 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:48,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 22:45:48,845 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash -691856830, now seen corresponding path program 45 times [2021-03-11 22:45:48,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:48,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634809115] [2021-03-11 22:45:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:48,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:48,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:48,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:48,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:48,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:48,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:48,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:48,883 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:48,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:48,896 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:48,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:48,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634809115] [2021-03-11 22:45:48,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:48,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:48,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757618655] [2021-03-11 22:45:48,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:48,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:48,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:48,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:48,909 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:48,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 140 transitions, 4351 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:48,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:48,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:48,991 INFO L129 PetriNetUnfolder]: 4/514 cut-off events. [2021-03-11 22:45:48,991 INFO L130 PetriNetUnfolder]: For 14037/14120 co-relation queries the response was YES. [2021-03-11 22:45:48,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 514 events. 4/514 cut-off events. For 14037/14120 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5378 event pairs, 4 based on Foata normal form. 11/520 useless extension candidates. Maximal degree in co-relation 3471. Up to 117 conditions per place. [2021-03-11 22:45:48,992 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 61 changer transitions 3/143 dead transitions. [2021-03-11 22:45:48,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 143 transitions, 4648 flow [2021-03-11 22:45:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:48,993 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:48,993 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:48,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:48,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:48,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:48,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:48,994 INFO L185 Difference]: Start difference. First operand has 208 places, 140 transitions, 4351 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:48,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 143 transitions, 4648 flow [2021-03-11 22:45:49,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 143 transitions, 4546 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:49,031 INFO L241 Difference]: Finished difference. Result has 212 places, 138 transitions, 4313 flow [2021-03-11 22:45:49,031 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4253, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4313, PETRI_PLACES=212, PETRI_TRANSITIONS=138} [2021-03-11 22:45:49,031 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2021-03-11 22:45:49,031 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 138 transitions, 4313 flow [2021-03-11 22:45:49,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,031 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:49,032 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:49,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 22:45:49,032 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1990062168, now seen corresponding path program 46 times [2021-03-11 22:45:49,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:49,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76422136] [2021-03-11 22:45:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:49,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:49,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:49,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:49,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:49,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:49,056 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:49,067 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:49,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:49,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76422136] [2021-03-11 22:45:49,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:49,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:49,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259783068] [2021-03-11 22:45:49,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:49,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:49,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:49,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:49,079 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:49,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 138 transitions, 4313 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:49,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:49,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:49,158 INFO L129 PetriNetUnfolder]: 4/504 cut-off events. [2021-03-11 22:45:49,158 INFO L130 PetriNetUnfolder]: For 13719/13776 co-relation queries the response was YES. [2021-03-11 22:45:49,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 504 events. 4/504 cut-off events. For 13719/13776 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5265 event pairs, 4 based on Foata normal form. 7/506 useless extension candidates. Maximal degree in co-relation 3431. Up to 115 conditions per place. [2021-03-11 22:45:49,160 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 81 selfloop transitions, 57 changer transitions 2/150 dead transitions. [2021-03-11 22:45:49,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 150 transitions, 4881 flow [2021-03-11 22:45:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:49,161 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:49,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:49,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,162 INFO L185 Difference]: Start difference. First operand has 212 places, 138 transitions, 4313 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 150 transitions, 4881 flow [2021-03-11 22:45:49,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 150 transitions, 4743 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:49,205 INFO L241 Difference]: Finished difference. Result has 214 places, 140 transitions, 4392 flow [2021-03-11 22:45:49,205 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4392, PETRI_PLACES=214, PETRI_TRANSITIONS=140} [2021-03-11 22:45:49,205 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2021-03-11 22:45:49,205 INFO L480 AbstractCegarLoop]: Abstraction has has 214 places, 140 transitions, 4392 flow [2021-03-11 22:45:49,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,205 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:49,205 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:49,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 22:45:49,206 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1286729158, now seen corresponding path program 47 times [2021-03-11 22:45:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:49,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963287747] [2021-03-11 22:45:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:49,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:49,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:49,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:49,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:49,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:49,242 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:49,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:49,258 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:49,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:49,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963287747] [2021-03-11 22:45:49,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:49,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:49,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279014049] [2021-03-11 22:45:49,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:49,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:49,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:49,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:49,271 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:49,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 140 transitions, 4392 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:49,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:49,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:49,358 INFO L129 PetriNetUnfolder]: 4/496 cut-off events. [2021-03-11 22:45:49,358 INFO L130 PetriNetUnfolder]: For 13821/13878 co-relation queries the response was YES. [2021-03-11 22:45:49,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 496 events. 4/496 cut-off events. For 13821/13878 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5175 event pairs, 4 based on Foata normal form. 7/498 useless extension candidates. Maximal degree in co-relation 3402. Up to 115 conditions per place. [2021-03-11 22:45:49,360 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 54 changer transitions 3/147 dead transitions. [2021-03-11 22:45:49,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 147 transitions, 4827 flow [2021-03-11 22:45:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:49,361 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:49,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:49,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:49,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:49,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:49,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,362 INFO L185 Difference]: Start difference. First operand has 214 places, 140 transitions, 4392 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:49,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 147 transitions, 4827 flow [2021-03-11 22:45:49,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 147 transitions, 4740 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:49,401 INFO L241 Difference]: Finished difference. Result has 218 places, 138 transitions, 4360 flow [2021-03-11 22:45:49,401 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4360, PETRI_PLACES=218, PETRI_TRANSITIONS=138} [2021-03-11 22:45:49,401 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2021-03-11 22:45:49,401 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 138 transitions, 4360 flow [2021-03-11 22:45:49,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:49,401 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:49,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 22:45:49,401 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:49,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1608537764, now seen corresponding path program 48 times [2021-03-11 22:45:49,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:49,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771853634] [2021-03-11 22:45:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:49,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:49,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:49,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:49,417 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:49,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:49,429 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:49,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:49,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:49,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:49,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771853634] [2021-03-11 22:45:49,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:49,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:49,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655809894] [2021-03-11 22:45:49,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:49,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:49,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:49,454 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:49,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 138 transitions, 4360 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:49,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:49,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:49,537 INFO L129 PetriNetUnfolder]: 4/487 cut-off events. [2021-03-11 22:45:49,537 INFO L130 PetriNetUnfolder]: For 13711/13766 co-relation queries the response was YES. [2021-03-11 22:45:49,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 487 events. 4/487 cut-off events. For 13711/13766 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5035 event pairs, 4 based on Foata normal form. 6/488 useless extension candidates. Maximal degree in co-relation 3371. Up to 115 conditions per place. [2021-03-11 22:45:49,538 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 60 changer transitions 3/145 dead transitions. [2021-03-11 22:45:49,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 145 transitions, 4766 flow [2021-03-11 22:45:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:49,539 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:49,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:49,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,540 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,540 INFO L185 Difference]: Start difference. First operand has 218 places, 138 transitions, 4360 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:49,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 145 transitions, 4766 flow [2021-03-11 22:45:49,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 145 transitions, 4648 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:49,580 INFO L241 Difference]: Finished difference. Result has 218 places, 135 transitions, 4266 flow [2021-03-11 22:45:49,580 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4266, PETRI_PLACES=218, PETRI_TRANSITIONS=135} [2021-03-11 22:45:49,580 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2021-03-11 22:45:49,580 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 135 transitions, 4266 flow [2021-03-11 22:45:49,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:49,580 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:49,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 22:45:49,580 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:49,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1736183166, now seen corresponding path program 49 times [2021-03-11 22:45:49,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:49,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673093374] [2021-03-11 22:45:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:49,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:49,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:49,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:49,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:49,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:49,604 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:49,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:49,616 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:49,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:49,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673093374] [2021-03-11 22:45:49,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:49,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:49,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985973342] [2021-03-11 22:45:49,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:49,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:49,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:49,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:49,628 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:49,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 135 transitions, 4266 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:49,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:49,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:49,714 INFO L129 PetriNetUnfolder]: 4/478 cut-off events. [2021-03-11 22:45:49,715 INFO L130 PetriNetUnfolder]: For 13283/13334 co-relation queries the response was YES. [2021-03-11 22:45:49,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 478 events. 4/478 cut-off events. For 13283/13334 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4917 event pairs, 4 based on Foata normal form. 6/479 useless extension candidates. Maximal degree in co-relation 3314. Up to 115 conditions per place. [2021-03-11 22:45:49,716 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 58 changer transitions 2/142 dead transitions. [2021-03-11 22:45:49,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 142 transitions, 4666 flow [2021-03-11 22:45:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:49,717 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:49,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:49,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,718 INFO L185 Difference]: Start difference. First operand has 218 places, 135 transitions, 4266 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:49,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 142 transitions, 4666 flow [2021-03-11 22:45:49,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 142 transitions, 4558 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:49,756 INFO L241 Difference]: Finished difference. Result has 218 places, 137 transitions, 4354 flow [2021-03-11 22:45:49,756 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4354, PETRI_PLACES=218, PETRI_TRANSITIONS=137} [2021-03-11 22:45:49,757 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2021-03-11 22:45:49,757 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 137 transitions, 4354 flow [2021-03-11 22:45:49,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,757 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:49,757 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:49,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 22:45:49,757 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:49,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2146393342, now seen corresponding path program 50 times [2021-03-11 22:45:49,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:49,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430479687] [2021-03-11 22:45:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:49,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:49,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:49,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:49,773 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:49,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:49,781 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:49,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:49,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:49,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:49,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430479687] [2021-03-11 22:45:49,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:49,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:49,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831671986] [2021-03-11 22:45:49,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:49,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:49,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:49,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:49,807 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:49,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 137 transitions, 4354 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:49,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:49,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:49,913 INFO L129 PetriNetUnfolder]: 4/472 cut-off events. [2021-03-11 22:45:49,913 INFO L130 PetriNetUnfolder]: For 13156/13209 co-relation queries the response was YES. [2021-03-11 22:45:49,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 472 events. 4/472 cut-off events. For 13156/13209 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4835 event pairs, 4 based on Foata normal form. 7/474 useless extension candidates. Maximal degree in co-relation 3304. Up to 115 conditions per place. [2021-03-11 22:45:49,914 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 56 changer transitions 4/140 dead transitions. [2021-03-11 22:45:49,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 140 transitions, 4626 flow [2021-03-11 22:45:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:49,915 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:49,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:49,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:49,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,916 INFO L185 Difference]: Start difference. First operand has 218 places, 137 transitions, 4354 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:49,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 140 transitions, 4626 flow [2021-03-11 22:45:49,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 140 transitions, 4459 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:49,951 INFO L241 Difference]: Finished difference. Result has 217 places, 133 transitions, 4170 flow [2021-03-11 22:45:49,951 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4170, PETRI_PLACES=217, PETRI_TRANSITIONS=133} [2021-03-11 22:45:49,951 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2021-03-11 22:45:49,951 INFO L480 AbstractCegarLoop]: Abstraction has has 217 places, 133 transitions, 4170 flow [2021-03-11 22:45:49,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:49,951 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:49,951 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:49,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 22:45:49,951 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:49,952 INFO L82 PathProgramCache]: Analyzing trace with hash -497227586, now seen corresponding path program 51 times [2021-03-11 22:45:49,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:49,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575166648] [2021-03-11 22:45:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:49,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:49,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:49,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:49,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:49,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:49,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:49,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:49,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:49,996 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:49,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:50,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575166648] [2021-03-11 22:45:50,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:50,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:50,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685712141] [2021-03-11 22:45:50,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:50,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:50,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:50,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:50,008 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:50,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 133 transitions, 4170 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:50,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:50,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:50,103 INFO L129 PetriNetUnfolder]: 4/462 cut-off events. [2021-03-11 22:45:50,103 INFO L130 PetriNetUnfolder]: For 12548/12597 co-relation queries the response was YES. [2021-03-11 22:45:50,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 462 events. 4/462 cut-off events. For 12548/12597 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4713 event pairs, 4 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 3190. Up to 109 conditions per place. [2021-03-11 22:45:50,105 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 82 selfloop transitions, 52 changer transitions 2/146 dead transitions. [2021-03-11 22:45:50,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 146 transitions, 4782 flow [2021-03-11 22:45:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:50,106 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:50,106 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:50,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,107 INFO L185 Difference]: Start difference. First operand has 217 places, 133 transitions, 4170 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:50,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 146 transitions, 4782 flow [2021-03-11 22:45:50,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 146 transitions, 4637 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:50,143 INFO L241 Difference]: Finished difference. Result has 219 places, 137 transitions, 4315 flow [2021-03-11 22:45:50,144 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4315, PETRI_PLACES=219, PETRI_TRANSITIONS=137} [2021-03-11 22:45:50,144 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2021-03-11 22:45:50,144 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 137 transitions, 4315 flow [2021-03-11 22:45:50,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,144 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:50,144 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:50,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 22:45:50,144 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1231819748, now seen corresponding path program 52 times [2021-03-11 22:45:50,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:50,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69752588] [2021-03-11 22:45:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:50,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:50,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:50,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:50,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:50,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:50,175 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:50,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:50,187 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:50,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:50,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69752588] [2021-03-11 22:45:50,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:50,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:50,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157339715] [2021-03-11 22:45:50,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:50,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:50,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:50,200 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:50,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 137 transitions, 4315 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:50,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:50,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:50,278 INFO L129 PetriNetUnfolder]: 4/454 cut-off events. [2021-03-11 22:45:50,278 INFO L130 PetriNetUnfolder]: For 12407/12456 co-relation queries the response was YES. [2021-03-11 22:45:50,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 454 events. 4/454 cut-off events. For 12407/12456 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4612 event pairs, 4 based on Foata normal form. 5/454 useless extension candidates. Maximal degree in co-relation 3146. Up to 109 conditions per place. [2021-03-11 22:45:50,280 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 82 selfloop transitions, 49 changer transitions 3/144 dead transitions. [2021-03-11 22:45:50,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 144 transitions, 4711 flow [2021-03-11 22:45:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:50,280 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:50,280 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:50,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,281 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,281 INFO L185 Difference]: Start difference. First operand has 219 places, 137 transitions, 4315 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:50,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 144 transitions, 4711 flow [2021-03-11 22:45:50,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 144 transitions, 4654 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:50,317 INFO L241 Difference]: Finished difference. Result has 222 places, 134 transitions, 4260 flow [2021-03-11 22:45:50,317 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4260, PETRI_PLACES=222, PETRI_TRANSITIONS=134} [2021-03-11 22:45:50,318 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2021-03-11 22:45:50,318 INFO L480 AbstractCegarLoop]: Abstraction has has 222 places, 134 transitions, 4260 flow [2021-03-11 22:45:50,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,318 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:50,318 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:50,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 22:45:50,318 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:50,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:50,318 INFO L82 PathProgramCache]: Analyzing trace with hash 928143226, now seen corresponding path program 53 times [2021-03-11 22:45:50,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:50,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142044549] [2021-03-11 22:45:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:50,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:50,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:50,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:50,351 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:50,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:50,364 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:50,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:50,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142044549] [2021-03-11 22:45:50,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:50,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:50,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915592198] [2021-03-11 22:45:50,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:50,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:50,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:50,378 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:50,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 134 transitions, 4260 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:50,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:50,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:50,453 INFO L129 PetriNetUnfolder]: 4/445 cut-off events. [2021-03-11 22:45:50,453 INFO L130 PetriNetUnfolder]: For 12161/12213 co-relation queries the response was YES. [2021-03-11 22:45:50,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 445 events. 4/445 cut-off events. For 12161/12213 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4495 event pairs, 4 based on Foata normal form. 5/445 useless extension candidates. Maximal degree in co-relation 3134. Up to 109 conditions per place. [2021-03-11 22:45:50,455 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 48 changer transitions 3/141 dead transitions. [2021-03-11 22:45:50,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 141 transitions, 4650 flow [2021-03-11 22:45:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:50,456 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:50,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:50,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,457 INFO L185 Difference]: Start difference. First operand has 222 places, 134 transitions, 4260 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:50,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 141 transitions, 4650 flow [2021-03-11 22:45:50,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 141 transitions, 4553 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:50,492 INFO L241 Difference]: Finished difference. Result has 224 places, 131 transitions, 4164 flow [2021-03-11 22:45:50,492 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4164, PETRI_PLACES=224, PETRI_TRANSITIONS=131} [2021-03-11 22:45:50,492 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2021-03-11 22:45:50,492 INFO L480 AbstractCegarLoop]: Abstraction has has 224 places, 131 transitions, 4164 flow [2021-03-11 22:45:50,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:50,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:50,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 22:45:50,492 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:50,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1524907122, now seen corresponding path program 54 times [2021-03-11 22:45:50,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:50,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398423487] [2021-03-11 22:45:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:50,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:50,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:50,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:50,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:50,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:50,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:50,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:50,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:50,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:50,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398423487] [2021-03-11 22:45:50,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:50,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:50,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568302727] [2021-03-11 22:45:50,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:50,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:50,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:50,542 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:50,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 131 transitions, 4164 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:50,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:50,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:50,629 INFO L129 PetriNetUnfolder]: 4/436 cut-off events. [2021-03-11 22:45:50,629 INFO L130 PetriNetUnfolder]: For 11910/11964 co-relation queries the response was YES. [2021-03-11 22:45:50,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 436 events. 4/436 cut-off events. For 11910/11964 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4361 event pairs, 4 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 3075. Up to 109 conditions per place. [2021-03-11 22:45:50,630 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 50 changer transitions 2/138 dead transitions. [2021-03-11 22:45:50,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 138 transitions, 4548 flow [2021-03-11 22:45:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:50,631 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:50,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:50,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,632 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,632 INFO L185 Difference]: Start difference. First operand has 224 places, 131 transitions, 4164 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:50,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 138 transitions, 4548 flow [2021-03-11 22:45:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 138 transitions, 4430 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:50,666 INFO L241 Difference]: Finished difference. Result has 225 places, 133 transitions, 4204 flow [2021-03-11 22:45:50,666 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4204, PETRI_PLACES=225, PETRI_TRANSITIONS=133} [2021-03-11 22:45:50,666 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 193 predicate places. [2021-03-11 22:45:50,666 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 133 transitions, 4204 flow [2021-03-11 22:45:50,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,666 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:50,666 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:50,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 22:45:50,667 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:50,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1463138396, now seen corresponding path program 55 times [2021-03-11 22:45:50,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:50,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233291114] [2021-03-11 22:45:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:50,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:50,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:50,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:50,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:50,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:50,692 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:50,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:50,705 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:50,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:50,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233291114] [2021-03-11 22:45:50,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:50,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:50,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494254665] [2021-03-11 22:45:50,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:50,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:50,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:50,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:50,719 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:50,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 133 transitions, 4204 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:50,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:50,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:50,822 INFO L129 PetriNetUnfolder]: 4/430 cut-off events. [2021-03-11 22:45:50,822 INFO L130 PetriNetUnfolder]: For 11883/11935 co-relation queries the response was YES. [2021-03-11 22:45:50,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 430 events. 4/430 cut-off events. For 11883/11935 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4306 event pairs, 4 based on Foata normal form. 5/430 useless extension candidates. Maximal degree in co-relation 3018. Up to 109 conditions per place. [2021-03-11 22:45:50,823 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 47 changer transitions 4/136 dead transitions. [2021-03-11 22:45:50,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 136 transitions, 4468 flow [2021-03-11 22:45:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:50,824 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:50,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:50,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,825 INFO L185 Difference]: Start difference. First operand has 225 places, 133 transitions, 4204 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 136 transitions, 4468 flow [2021-03-11 22:45:50,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 136 transitions, 4342 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:50,859 INFO L241 Difference]: Finished difference. Result has 226 places, 129 transitions, 4044 flow [2021-03-11 22:45:50,859 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4084, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4044, PETRI_PLACES=226, PETRI_TRANSITIONS=129} [2021-03-11 22:45:50,859 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2021-03-11 22:45:50,859 INFO L480 AbstractCegarLoop]: Abstraction has has 226 places, 129 transitions, 4044 flow [2021-03-11 22:45:50,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,859 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:50,859 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:50,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 22:45:50,859 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:50,860 INFO L82 PathProgramCache]: Analyzing trace with hash -158766948, now seen corresponding path program 56 times [2021-03-11 22:45:50,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:50,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082656235] [2021-03-11 22:45:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:50,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:50,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:50,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:50,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:50,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:50,878 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:50,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:50,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:50,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:50,898 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:50,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:50,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082656235] [2021-03-11 22:45:50,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:50,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:50,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442453055] [2021-03-11 22:45:50,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:50,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:50,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:50,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:50,910 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:50,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 129 transitions, 4044 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:50,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:50,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:50,990 INFO L129 PetriNetUnfolder]: 4/419 cut-off events. [2021-03-11 22:45:50,990 INFO L130 PetriNetUnfolder]: For 11282/11308 co-relation queries the response was YES. [2021-03-11 22:45:50,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 419 events. 4/419 cut-off events. For 11282/11308 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4189 event pairs, 0 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 2907. Up to 76 conditions per place. [2021-03-11 22:45:50,992 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 57 changer transitions 1/140 dead transitions. [2021-03-11 22:45:50,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 140 transitions, 4513 flow [2021-03-11 22:45:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:50,992 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:50,993 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:50,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:50,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:50,993 INFO L185 Difference]: Start difference. First operand has 226 places, 129 transitions, 4044 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:50,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 140 transitions, 4513 flow [2021-03-11 22:45:51,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 140 transitions, 4359 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:51,027 INFO L241 Difference]: Finished difference. Result has 227 places, 129 transitions, 4021 flow [2021-03-11 22:45:51,027 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4021, PETRI_PLACES=227, PETRI_TRANSITIONS=129} [2021-03-11 22:45:51,027 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2021-03-11 22:45:51,027 INFO L480 AbstractCegarLoop]: Abstraction has has 227 places, 129 transitions, 4021 flow [2021-03-11 22:45:51,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:51,027 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:51,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 22:45:51,027 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash 286093996, now seen corresponding path program 57 times [2021-03-11 22:45:51,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:51,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749202828] [2021-03-11 22:45:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:51,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:51,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:51,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:51,047 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:51,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:51,056 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:51,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:51,068 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:51,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:51,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749202828] [2021-03-11 22:45:51,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:51,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:51,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960994718] [2021-03-11 22:45:51,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:51,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:51,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:51,082 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:51,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 129 transitions, 4021 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:51,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:51,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:51,171 INFO L129 PetriNetUnfolder]: 4/415 cut-off events. [2021-03-11 22:45:51,171 INFO L130 PetriNetUnfolder]: For 11104/11107 co-relation queries the response was YES. [2021-03-11 22:45:51,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 415 events. 4/415 cut-off events. For 11104/11107 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4117 event pairs, 0 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 2865. Up to 80 conditions per place. [2021-03-11 22:45:51,172 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 73 selfloop transitions, 54 changer transitions 2/139 dead transitions. [2021-03-11 22:45:51,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 139 transitions, 4446 flow [2021-03-11 22:45:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:51,173 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:51,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:51,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,174 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,174 INFO L185 Difference]: Start difference. First operand has 227 places, 129 transitions, 4021 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:51,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 139 transitions, 4446 flow [2021-03-11 22:45:51,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 139 transitions, 4370 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:51,208 INFO L241 Difference]: Finished difference. Result has 230 places, 128 transitions, 4027 flow [2021-03-11 22:45:51,209 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4027, PETRI_PLACES=230, PETRI_TRANSITIONS=128} [2021-03-11 22:45:51,209 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2021-03-11 22:45:51,209 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 128 transitions, 4027 flow [2021-03-11 22:45:51,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:51,209 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:51,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 22:45:51,209 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:51,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1944778064, now seen corresponding path program 58 times [2021-03-11 22:45:51,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:51,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691857957] [2021-03-11 22:45:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:51,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:51,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:51,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:51,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:51,224 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:51,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:51,234 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:51,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:51,246 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:51,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:51,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691857957] [2021-03-11 22:45:51,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:51,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:51,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149827401] [2021-03-11 22:45:51,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:51,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:51,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:51,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:51,260 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:51,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 128 transitions, 4027 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:51,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:51,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:51,348 INFO L129 PetriNetUnfolder]: 3/423 cut-off events. [2021-03-11 22:45:51,348 INFO L130 PetriNetUnfolder]: For 11349/11375 co-relation queries the response was YES. [2021-03-11 22:45:51,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 423 events. 3/423 cut-off events. For 11349/11375 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4207 event pairs, 1 based on Foata normal form. 3/424 useless extension candidates. Maximal degree in co-relation 2928. Up to 89 conditions per place. [2021-03-11 22:45:51,350 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 85 selfloop transitions, 49 changer transitions 3/147 dead transitions. [2021-03-11 22:45:51,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 147 transitions, 4760 flow [2021-03-11 22:45:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:51,351 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:51,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:51,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,352 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,352 INFO L185 Difference]: Start difference. First operand has 230 places, 128 transitions, 4027 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 147 transitions, 4760 flow [2021-03-11 22:45:51,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 147 transitions, 4629 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:51,385 INFO L241 Difference]: Finished difference. Result has 234 places, 136 transitions, 4320 flow [2021-03-11 22:45:51,385 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4320, PETRI_PLACES=234, PETRI_TRANSITIONS=136} [2021-03-11 22:45:51,385 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2021-03-11 22:45:51,385 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 136 transitions, 4320 flow [2021-03-11 22:45:51,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,385 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:51,385 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:51,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 22:45:51,385 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1415640678, now seen corresponding path program 59 times [2021-03-11 22:45:51,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:51,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501489143] [2021-03-11 22:45:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:51,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:51,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:51,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:51,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:51,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:51,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:51,414 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:51,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:51,427 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:51,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:51,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501489143] [2021-03-11 22:45:51,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:51,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:51,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608859007] [2021-03-11 22:45:51,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:51,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:51,441 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:51,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 136 transitions, 4320 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:51,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:51,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:51,511 INFO L129 PetriNetUnfolder]: 3/414 cut-off events. [2021-03-11 22:45:51,511 INFO L130 PetriNetUnfolder]: For 11575/11575 co-relation queries the response was YES. [2021-03-11 22:45:51,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 414 events. 3/414 cut-off events. For 11575/11575 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4080 event pairs, 0 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 2909. Up to 76 conditions per place. [2021-03-11 22:45:51,512 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 74 selfloop transitions, 59 changer transitions 3/146 dead transitions. [2021-03-11 22:45:51,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 146 transitions, 4763 flow [2021-03-11 22:45:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:51,513 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:51,513 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:51,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,514 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,514 INFO L185 Difference]: Start difference. First operand has 234 places, 136 transitions, 4320 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 146 transitions, 4763 flow [2021-03-11 22:45:51,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 146 transitions, 4709 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:51,548 INFO L241 Difference]: Finished difference. Result has 237 places, 133 transitions, 4284 flow [2021-03-11 22:45:51,548 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4284, PETRI_PLACES=237, PETRI_TRANSITIONS=133} [2021-03-11 22:45:51,548 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2021-03-11 22:45:51,548 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 133 transitions, 4284 flow [2021-03-11 22:45:51,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,548 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:51,549 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:51,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 22:45:51,549 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1539681452, now seen corresponding path program 60 times [2021-03-11 22:45:51,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:51,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208350566] [2021-03-11 22:45:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:51,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:51,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:51,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:51,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:51,574 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:51,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:51,583 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:51,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:51,595 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:51,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:51,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208350566] [2021-03-11 22:45:51,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:51,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:51,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947825785] [2021-03-11 22:45:51,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:51,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:51,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:51,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:51,609 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:51,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 133 transitions, 4284 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:51,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:51,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:51,695 INFO L129 PetriNetUnfolder]: 1/471 cut-off events. [2021-03-11 22:45:51,695 INFO L130 PetriNetUnfolder]: For 13392/13392 co-relation queries the response was YES. [2021-03-11 22:45:51,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 471 events. 1/471 cut-off events. For 13392/13392 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4845 event pairs, 1 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 3299. Up to 95 conditions per place. [2021-03-11 22:45:51,697 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 54 changer transitions 2/157 dead transitions. [2021-03-11 22:45:51,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 157 transitions, 5293 flow [2021-03-11 22:45:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:51,698 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:51,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:51,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,699 INFO L185 Difference]: Start difference. First operand has 237 places, 133 transitions, 4284 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 157 transitions, 5293 flow [2021-03-11 22:45:51,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 157 transitions, 5088 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:51,737 INFO L241 Difference]: Finished difference. Result has 240 places, 142 transitions, 4615 flow [2021-03-11 22:45:51,737 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4615, PETRI_PLACES=240, PETRI_TRANSITIONS=142} [2021-03-11 22:45:51,738 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-11 22:45:51,738 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 142 transitions, 4615 flow [2021-03-11 22:45:51,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,739 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:51,739 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:51,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 22:45:51,739 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1257085144, now seen corresponding path program 61 times [2021-03-11 22:45:51,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:51,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080331593] [2021-03-11 22:45:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:51,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:51,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:51,758 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:51,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:51,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:51,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:51,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:51,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:51,789 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:51,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:51,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080331593] [2021-03-11 22:45:51,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:51,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:51,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237466768] [2021-03-11 22:45:51,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:51,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:51,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:51,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:51,802 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:51,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 142 transitions, 4615 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:51,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:51,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:51,888 INFO L129 PetriNetUnfolder]: 1/463 cut-off events. [2021-03-11 22:45:51,888 INFO L130 PetriNetUnfolder]: For 13442/13442 co-relation queries the response was YES. [2021-03-11 22:45:51,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 463 events. 1/463 cut-off events. For 13442/13442 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4743 event pairs, 0 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 3269. Up to 108 conditions per place. [2021-03-11 22:45:51,889 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 97 selfloop transitions, 53 changer transitions 2/162 dead transitions. [2021-03-11 22:45:51,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 162 transitions, 5424 flow [2021-03-11 22:45:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:51,890 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:51,890 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:51,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:51,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,891 INFO L185 Difference]: Start difference. First operand has 240 places, 142 transitions, 4615 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:51,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 162 transitions, 5424 flow [2021-03-11 22:45:51,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 162 transitions, 5375 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:51,931 INFO L241 Difference]: Finished difference. Result has 245 places, 146 transitions, 4842 flow [2021-03-11 22:45:51,932 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4575, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4842, PETRI_PLACES=245, PETRI_TRANSITIONS=146} [2021-03-11 22:45:51,932 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2021-03-11 22:45:51,932 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 146 transitions, 4842 flow [2021-03-11 22:45:51,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:51,932 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:51,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 22:45:51,932 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:51,932 INFO L82 PathProgramCache]: Analyzing trace with hash -335872928, now seen corresponding path program 62 times [2021-03-11 22:45:51,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:51,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091281852] [2021-03-11 22:45:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:51,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:51,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:51,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:51,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:51,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:51,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:51,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:51,966 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:51,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:51,982 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:51,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:51,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091281852] [2021-03-11 22:45:51,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:51,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:51,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569780946] [2021-03-11 22:45:51,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:51,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:51,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:51,996 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:51,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 146 transitions, 4842 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:51,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:51,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:51,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:52,087 INFO L129 PetriNetUnfolder]: 1/455 cut-off events. [2021-03-11 22:45:52,087 INFO L130 PetriNetUnfolder]: For 14173/14185 co-relation queries the response was YES. [2021-03-11 22:45:52,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 455 events. 1/455 cut-off events. For 14173/14185 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4640 event pairs, 0 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 3301. Up to 79 conditions per place. [2021-03-11 22:45:52,089 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 57 changer transitions 3/150 dead transitions. [2021-03-11 22:45:52,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 150 transitions, 5148 flow [2021-03-11 22:45:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:52,090 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:52,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:52,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:52,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:52,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:52,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,091 INFO L185 Difference]: Start difference. First operand has 245 places, 146 transitions, 4842 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:52,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 150 transitions, 5148 flow [2021-03-11 22:45:52,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 150 transitions, 5067 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:52,134 INFO L241 Difference]: Finished difference. Result has 247 places, 143 transitions, 4769 flow [2021-03-11 22:45:52,134 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4767, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4769, PETRI_PLACES=247, PETRI_TRANSITIONS=143} [2021-03-11 22:45:52,135 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2021-03-11 22:45:52,135 INFO L480 AbstractCegarLoop]: Abstraction has has 247 places, 143 transitions, 4769 flow [2021-03-11 22:45:52,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,135 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:52,135 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:52,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 22:45:52,135 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1235091198, now seen corresponding path program 63 times [2021-03-11 22:45:52,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:52,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125430845] [2021-03-11 22:45:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:52,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:52,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:52,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:52,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:52,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:52,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:52,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:52,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:52,183 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:52,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:52,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125430845] [2021-03-11 22:45:52,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:52,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980885029] [2021-03-11 22:45:52,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:52,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:52,197 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:52,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 143 transitions, 4769 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:52,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:52,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:52,290 INFO L129 PetriNetUnfolder]: 1/446 cut-off events. [2021-03-11 22:45:52,291 INFO L130 PetriNetUnfolder]: For 14153/14219 co-relation queries the response was YES. [2021-03-11 22:45:52,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 446 events. 1/446 cut-off events. For 14153/14219 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4518 event pairs, 0 based on Foata normal form. 16/462 useless extension candidates. Maximal degree in co-relation 3281. Up to 79 conditions per place. [2021-03-11 22:45:52,292 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 60 changer transitions 2/147 dead transitions. [2021-03-11 22:45:52,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 147 transitions, 5069 flow [2021-03-11 22:45:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:52,293 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:52,293 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:52,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,294 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,294 INFO L185 Difference]: Start difference. First operand has 247 places, 143 transitions, 4769 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 147 transitions, 5069 flow [2021-03-11 22:45:52,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 147 transitions, 4897 flow, removed 25 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:52,333 INFO L241 Difference]: Finished difference. Result has 243 places, 141 transitions, 4640 flow [2021-03-11 22:45:52,334 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4640, PETRI_PLACES=243, PETRI_TRANSITIONS=141} [2021-03-11 22:45:52,334 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2021-03-11 22:45:52,334 INFO L480 AbstractCegarLoop]: Abstraction has has 243 places, 141 transitions, 4640 flow [2021-03-11 22:45:52,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:52,334 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:52,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 22:45:52,334 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:52,334 INFO L82 PathProgramCache]: Analyzing trace with hash -269371104, now seen corresponding path program 64 times [2021-03-11 22:45:52,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:52,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088696598] [2021-03-11 22:45:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:52,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:52,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:52,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:52,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:52,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:52,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:52,373 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:52,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:52,386 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:52,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:52,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088696598] [2021-03-11 22:45:52,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:52,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:52,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019647534] [2021-03-11 22:45:52,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:52,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:52,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:52,399 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:52,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 141 transitions, 4640 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:52,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:52,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:52,472 INFO L129 PetriNetUnfolder]: 1/438 cut-off events. [2021-03-11 22:45:52,472 INFO L130 PetriNetUnfolder]: For 13266/13332 co-relation queries the response was YES. [2021-03-11 22:45:52,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3288 conditions, 438 events. 1/438 cut-off events. For 13266/13332 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4418 event pairs, 0 based on Foata normal form. 16/454 useless extension candidates. Maximal degree in co-relation 3216. Up to 79 conditions per place. [2021-03-11 22:45:52,473 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 55 changer transitions 4/144 dead transitions. [2021-03-11 22:45:52,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 144 transitions, 4930 flow [2021-03-11 22:45:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:52,474 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:52,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:52,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:52,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:52,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:52,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,475 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,475 INFO L185 Difference]: Start difference. First operand has 243 places, 141 transitions, 4640 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 144 transitions, 4930 flow [2021-03-11 22:45:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 144 transitions, 4839 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:52,513 INFO L241 Difference]: Finished difference. Result has 245 places, 137 transitions, 4531 flow [2021-03-11 22:45:52,513 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4531, PETRI_PLACES=245, PETRI_TRANSITIONS=137} [2021-03-11 22:45:52,513 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2021-03-11 22:45:52,513 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 137 transitions, 4531 flow [2021-03-11 22:45:52,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,513 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:52,513 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:52,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 22:45:52,514 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1019349272, now seen corresponding path program 65 times [2021-03-11 22:45:52,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:52,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321703273] [2021-03-11 22:45:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:52,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:52,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:52,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:52,528 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:52,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:52,544 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:52,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:52,557 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:52,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:52,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321703273] [2021-03-11 22:45:52,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:52,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:52,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146168702] [2021-03-11 22:45:52,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:52,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:52,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:52,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:52,572 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:52,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 137 transitions, 4531 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:52,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:52,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:52,655 INFO L129 PetriNetUnfolder]: 1/428 cut-off events. [2021-03-11 22:45:52,655 INFO L130 PetriNetUnfolder]: For 12620/12632 co-relation queries the response was YES. [2021-03-11 22:45:52,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 428 events. 1/428 cut-off events. For 12620/12632 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4284 event pairs, 0 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 3164. Up to 82 conditions per place. [2021-03-11 22:45:52,656 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 54 changer transitions 2/141 dead transitions. [2021-03-11 22:45:52,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 141 transitions, 4819 flow [2021-03-11 22:45:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:52,657 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:52,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:52,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,657 INFO L185 Difference]: Start difference. First operand has 245 places, 137 transitions, 4531 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:52,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 141 transitions, 4819 flow [2021-03-11 22:45:52,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 141 transitions, 4684 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:52,694 INFO L241 Difference]: Finished difference. Result has 241 places, 135 transitions, 4435 flow [2021-03-11 22:45:52,694 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4402, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4435, PETRI_PLACES=241, PETRI_TRANSITIONS=135} [2021-03-11 22:45:52,694 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2021-03-11 22:45:52,694 INFO L480 AbstractCegarLoop]: Abstraction has has 241 places, 135 transitions, 4435 flow [2021-03-11 22:45:52,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,694 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:52,694 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:52,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 22:45:52,694 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:52,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:52,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1282941540, now seen corresponding path program 66 times [2021-03-11 22:45:52,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:52,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710812276] [2021-03-11 22:45:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:52,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:52,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:52,704 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:52,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:52,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:52,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:52,725 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:52,737 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:52,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:52,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710812276] [2021-03-11 22:45:52,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:52,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:52,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226999688] [2021-03-11 22:45:52,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:52,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:52,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:52,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:52,754 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:52,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 135 transitions, 4435 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:52,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:52,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:52,826 INFO L129 PetriNetUnfolder]: 1/421 cut-off events. [2021-03-11 22:45:52,827 INFO L130 PetriNetUnfolder]: For 12156/12168 co-relation queries the response was YES. [2021-03-11 22:45:52,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 421 events. 1/421 cut-off events. For 12156/12168 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4221 event pairs, 0 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 3110. Up to 105 conditions per place. [2021-03-11 22:45:52,828 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 84 selfloop transitions, 52 changer transitions 2/148 dead transitions. [2021-03-11 22:45:52,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 148 transitions, 5046 flow [2021-03-11 22:45:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:52,829 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:52,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:52,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:52,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,830 INFO L185 Difference]: Start difference. First operand has 241 places, 135 transitions, 4435 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:52,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 148 transitions, 5046 flow [2021-03-11 22:45:52,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 148 transitions, 4941 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:52,876 INFO L241 Difference]: Finished difference. Result has 244 places, 140 transitions, 4671 flow [2021-03-11 22:45:52,876 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4671, PETRI_PLACES=244, PETRI_TRANSITIONS=140} [2021-03-11 22:45:52,876 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2021-03-11 22:45:52,876 INFO L480 AbstractCegarLoop]: Abstraction has has 244 places, 140 transitions, 4671 flow [2021-03-11 22:45:52,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,876 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:52,876 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:52,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 22:45:52,876 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:52,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1135418848, now seen corresponding path program 67 times [2021-03-11 22:45:52,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:52,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505452584] [2021-03-11 22:45:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:52,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:52,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:52,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:52,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:52,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:52,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:52,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:52,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:52,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:52,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:52,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505452584] [2021-03-11 22:45:52,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:52,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:52,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562514220] [2021-03-11 22:45:52,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:52,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:52,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:52,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:52,953 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:52,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 140 transitions, 4671 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:52,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:52,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:52,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:53,026 INFO L129 PetriNetUnfolder]: 1/413 cut-off events. [2021-03-11 22:45:53,027 INFO L130 PetriNetUnfolder]: For 12607/12643 co-relation queries the response was YES. [2021-03-11 22:45:53,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 413 events. 1/413 cut-off events. For 12607/12643 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4082 event pairs, 0 based on Foata normal form. 7/420 useless extension candidates. Maximal degree in co-relation 3091. Up to 105 conditions per place. [2021-03-11 22:45:53,028 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 86 selfloop transitions, 48 changer transitions 2/146 dead transitions. [2021-03-11 22:45:53,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 146 transitions, 5021 flow [2021-03-11 22:45:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:53,031 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:53,031 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:53,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,032 INFO L185 Difference]: Start difference. First operand has 244 places, 140 transitions, 4671 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:53,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 146 transitions, 5021 flow [2021-03-11 22:45:53,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 146 transitions, 4944 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:53,071 INFO L241 Difference]: Finished difference. Result has 248 places, 140 transitions, 4688 flow [2021-03-11 22:45:53,071 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4600, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4688, PETRI_PLACES=248, PETRI_TRANSITIONS=140} [2021-03-11 22:45:53,071 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-11 22:45:53,071 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 140 transitions, 4688 flow [2021-03-11 22:45:53,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,071 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:53,071 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:53,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 22:45:53,071 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash -757765860, now seen corresponding path program 68 times [2021-03-11 22:45:53,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:53,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343343059] [2021-03-11 22:45:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:53,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:53,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:53,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:53,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:53,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:53,102 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:53,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:53,115 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:53,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:53,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343343059] [2021-03-11 22:45:53,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:53,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:53,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519860267] [2021-03-11 22:45:53,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:53,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:53,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:53,128 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:53,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 140 transitions, 4688 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:53,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:53,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:53,199 INFO L129 PetriNetUnfolder]: 1/406 cut-off events. [2021-03-11 22:45:53,200 INFO L130 PetriNetUnfolder]: For 12628/12664 co-relation queries the response was YES. [2021-03-11 22:45:53,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 406 events. 1/406 cut-off events. For 12628/12664 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3994 event pairs, 0 based on Foata normal form. 11/417 useless extension candidates. Maximal degree in co-relation 3064. Up to 82 conditions per place. [2021-03-11 22:45:53,201 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 74 selfloop transitions, 57 changer transitions 3/144 dead transitions. [2021-03-11 22:45:53,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 144 transitions, 4982 flow [2021-03-11 22:45:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:53,203 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:53,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:53,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,204 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,204 INFO L185 Difference]: Start difference. First operand has 248 places, 140 transitions, 4688 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:53,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 144 transitions, 4982 flow [2021-03-11 22:45:53,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 144 transitions, 4907 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:53,243 INFO L241 Difference]: Finished difference. Result has 251 places, 137 transitions, 4608 flow [2021-03-11 22:45:53,243 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4608, PETRI_PLACES=251, PETRI_TRANSITIONS=137} [2021-03-11 22:45:53,243 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2021-03-11 22:45:53,243 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 137 transitions, 4608 flow [2021-03-11 22:45:53,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,243 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:53,243 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:53,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 22:45:53,244 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1786213028, now seen corresponding path program 69 times [2021-03-11 22:45:53,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:53,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319380794] [2021-03-11 22:45:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:53,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:53,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:53,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:53,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:53,266 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:53,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:53,277 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:53,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:53,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319380794] [2021-03-11 22:45:53,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:53,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:53,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601620674] [2021-03-11 22:45:53,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:53,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:53,291 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:53,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 137 transitions, 4608 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:53,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:53,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:53,371 INFO L129 PetriNetUnfolder]: 1/398 cut-off events. [2021-03-11 22:45:53,372 INFO L130 PetriNetUnfolder]: For 12217/12229 co-relation queries the response was YES. [2021-03-11 22:45:53,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 398 events. 1/398 cut-off events. For 12217/12229 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3909 event pairs, 0 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 3015. Up to 82 conditions per place. [2021-03-11 22:45:53,373 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 74 selfloop transitions, 55 changer transitions 2/141 dead transitions. [2021-03-11 22:45:53,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 141 transitions, 4896 flow [2021-03-11 22:45:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:53,374 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:53,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:53,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,375 INFO L185 Difference]: Start difference. First operand has 251 places, 137 transitions, 4608 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:53,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 141 transitions, 4896 flow [2021-03-11 22:45:53,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 141 transitions, 4767 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:53,413 INFO L241 Difference]: Finished difference. Result has 248 places, 135 transitions, 4504 flow [2021-03-11 22:45:53,414 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4485, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4504, PETRI_PLACES=248, PETRI_TRANSITIONS=135} [2021-03-11 22:45:53,414 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-11 22:45:53,414 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 135 transitions, 4504 flow [2021-03-11 22:45:53,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,414 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:53,414 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:53,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 22:45:53,414 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash -589880476, now seen corresponding path program 70 times [2021-03-11 22:45:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:53,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197745775] [2021-03-11 22:45:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:53,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:53,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:53,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:53,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:53,434 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:53,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:53,443 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:53,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:53,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:53,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:53,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197745775] [2021-03-11 22:45:53,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:53,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:53,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746467183] [2021-03-11 22:45:53,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:53,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:53,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:53,471 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:53,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 135 transitions, 4504 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:53,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:53,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:53,541 INFO L129 PetriNetUnfolder]: 1/391 cut-off events. [2021-03-11 22:45:53,541 INFO L130 PetriNetUnfolder]: For 11734/11770 co-relation queries the response was YES. [2021-03-11 22:45:53,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 391 events. 1/391 cut-off events. For 11734/11770 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3799 event pairs, 0 based on Foata normal form. 7/398 useless extension candidates. Maximal degree in co-relation 2970. Up to 105 conditions per place. [2021-03-11 22:45:53,543 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 86 selfloop transitions, 41 changer transitions 3/140 dead transitions. [2021-03-11 22:45:53,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 140 transitions, 4821 flow [2021-03-11 22:45:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:53,543 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:53,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:53,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:53,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,544 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,544 INFO L185 Difference]: Start difference. First operand has 248 places, 135 transitions, 4504 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 140 transitions, 4821 flow [2021-03-11 22:45:53,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 140 transitions, 4690 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:53,579 INFO L241 Difference]: Finished difference. Result has 249 places, 133 transitions, 4404 flow [2021-03-11 22:45:53,580 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4404, PETRI_PLACES=249, PETRI_TRANSITIONS=133} [2021-03-11 22:45:53,580 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2021-03-11 22:45:53,580 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 133 transitions, 4404 flow [2021-03-11 22:45:53,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:53,580 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:53,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 22:45:53,580 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:53,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1653447614, now seen corresponding path program 71 times [2021-03-11 22:45:53,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:53,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241737063] [2021-03-11 22:45:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:53,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:53,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:53,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:53,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:53,610 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:53,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:53,623 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:53,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:53,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241737063] [2021-03-11 22:45:53,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:53,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:53,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089699807] [2021-03-11 22:45:53,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:53,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:53,639 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:53,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 133 transitions, 4404 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:53,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:53,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:53,725 INFO L129 PetriNetUnfolder]: 1/382 cut-off events. [2021-03-11 22:45:53,725 INFO L130 PetriNetUnfolder]: For 11407/11443 co-relation queries the response was YES. [2021-03-11 22:45:53,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 382 events. 1/382 cut-off events. For 11407/11443 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3708 event pairs, 0 based on Foata normal form. 11/393 useless extension candidates. Maximal degree in co-relation 2888. Up to 80 conditions per place. [2021-03-11 22:45:53,726 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 53 changer transitions 4/137 dead transitions. [2021-03-11 22:45:53,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 137 transitions, 4684 flow [2021-03-11 22:45:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:53,727 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:53,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:53,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,728 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,728 INFO L185 Difference]: Start difference. First operand has 249 places, 133 transitions, 4404 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:53,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 137 transitions, 4684 flow [2021-03-11 22:45:53,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 137 transitions, 4598 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:53,761 INFO L241 Difference]: Finished difference. Result has 251 places, 129 transitions, 4296 flow [2021-03-11 22:45:53,762 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4296, PETRI_PLACES=251, PETRI_TRANSITIONS=129} [2021-03-11 22:45:53,762 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2021-03-11 22:45:53,762 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 129 transitions, 4296 flow [2021-03-11 22:45:53,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,762 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:53,762 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:53,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 22:45:53,762 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash 147384002, now seen corresponding path program 72 times [2021-03-11 22:45:53,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:53,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934917343] [2021-03-11 22:45:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:53,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:53,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:53,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:53,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:53,782 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:53,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:53,797 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:53,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:53,810 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:53,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:53,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934917343] [2021-03-11 22:45:53,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:53,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:53,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51174141] [2021-03-11 22:45:53,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:53,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:53,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:53,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:53,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:53,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 129 transitions, 4296 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:53,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:53,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:53,899 INFO L129 PetriNetUnfolder]: 1/372 cut-off events. [2021-03-11 22:45:53,899 INFO L130 PetriNetUnfolder]: For 10954/10966 co-relation queries the response was YES. [2021-03-11 22:45:53,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 372 events. 1/372 cut-off events. For 10954/10966 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3561 event pairs, 0 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 2817. Up to 102 conditions per place. [2021-03-11 22:45:53,900 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 78 selfloop transitions, 41 changer transitions 3/132 dead transitions. [2021-03-11 22:45:53,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 132 transitions, 4562 flow [2021-03-11 22:45:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:53,901 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:53,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:53,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:53,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,902 INFO L185 Difference]: Start difference. First operand has 251 places, 129 transitions, 4296 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:53,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 132 transitions, 4562 flow [2021-03-11 22:45:53,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 132 transitions, 4434 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:53,937 INFO L241 Difference]: Finished difference. Result has 248 places, 126 transitions, 4144 flow [2021-03-11 22:45:53,937 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4144, PETRI_PLACES=248, PETRI_TRANSITIONS=126} [2021-03-11 22:45:53,937 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-11 22:45:53,937 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 126 transitions, 4144 flow [2021-03-11 22:45:53,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:53,937 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:53,938 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:53,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 22:45:53,938 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2016712232, now seen corresponding path program 73 times [2021-03-11 22:45:53,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:53,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021290738] [2021-03-11 22:45:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:53,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:53,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:53,958 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:53,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:53,971 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:53,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:53,988 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:53,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021290738] [2021-03-11 22:45:54,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298208446] [2021-03-11 22:45:54,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,001 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 126 transitions, 4144 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:54,065 INFO L129 PetriNetUnfolder]: 1/363 cut-off events. [2021-03-11 22:45:54,066 INFO L130 PetriNetUnfolder]: For 10386/10398 co-relation queries the response was YES. [2021-03-11 22:45:54,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 363 events. 1/363 cut-off events. For 10386/10398 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3458 event pairs, 0 based on Foata normal form. 2/365 useless extension candidates. Maximal degree in co-relation 2733. Up to 102 conditions per place. [2021-03-11 22:45:54,067 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 40 changer transitions 4/129 dead transitions. [2021-03-11 22:45:54,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 129 transitions, 4404 flow [2021-03-11 22:45:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-03-11 22:45:54,067 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2021-03-11 22:45:54,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-03-11 22:45:54,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-03-11 22:45:54,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:54,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-03-11 22:45:54,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,068 INFO L185 Difference]: Start difference. First operand has 248 places, 126 transitions, 4144 flow. Second operand 7 states and 305 transitions. [2021-03-11 22:45:54,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 129 transitions, 4404 flow [2021-03-11 22:45:54,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 129 transitions, 4315 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:54,101 INFO L241 Difference]: Finished difference. Result has 247 places, 122 transitions, 4008 flow [2021-03-11 22:45:54,101 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4008, PETRI_PLACES=247, PETRI_TRANSITIONS=122} [2021-03-11 22:45:54,101 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2021-03-11 22:45:54,101 INFO L480 AbstractCegarLoop]: Abstraction has has 247 places, 122 transitions, 4008 flow [2021-03-11 22:45:54,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,101 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:54,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:54,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 22:45:54,101 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash -844758864, now seen corresponding path program 74 times [2021-03-11 22:45:54,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:54,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36699162] [2021-03-11 22:45:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:54,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:54,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:54,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:54,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:54,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:54,127 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:54,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:54,137 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:54,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36699162] [2021-03-11 22:45:54,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772236490] [2021-03-11 22:45:54,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,149 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 122 transitions, 4008 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:54,229 INFO L129 PetriNetUnfolder]: 0/403 cut-off events. [2021-03-11 22:45:54,229 INFO L130 PetriNetUnfolder]: For 11628/11643 co-relation queries the response was YES. [2021-03-11 22:45:54,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 403 events. 0/403 cut-off events. For 11628/11643 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3960 event pairs, 0 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2021-03-11 22:45:54,230 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 57 changer transitions 2/144 dead transitions. [2021-03-11 22:45:54,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 144 transitions, 4995 flow [2021-03-11 22:45:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:54,231 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:54,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:54,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,232 INFO L185 Difference]: Start difference. First operand has 247 places, 122 transitions, 4008 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:54,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 144 transitions, 4995 flow [2021-03-11 22:45:54,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 144 transitions, 4870 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:54,268 INFO L241 Difference]: Finished difference. Result has 248 places, 133 transitions, 4554 flow [2021-03-11 22:45:54,268 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4554, PETRI_PLACES=248, PETRI_TRANSITIONS=133} [2021-03-11 22:45:54,268 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-11 22:45:54,268 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 133 transitions, 4554 flow [2021-03-11 22:45:54,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:54,268 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:54,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 22:45:54,269 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash 510220158, now seen corresponding path program 75 times [2021-03-11 22:45:54,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:54,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215944622] [2021-03-11 22:45:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:54,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:54,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:54,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:54,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:54,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:54,294 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:54,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:54,306 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:54,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215944622] [2021-03-11 22:45:54,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115343254] [2021-03-11 22:45:54,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,318 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 133 transitions, 4554 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:54,387 INFO L129 PetriNetUnfolder]: 0/395 cut-off events. [2021-03-11 22:45:54,388 INFO L130 PetriNetUnfolder]: For 12049/12067 co-relation queries the response was YES. [2021-03-11 22:45:54,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 395 events. 0/395 cut-off events. For 12049/12067 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3865 event pairs, 0 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-11 22:45:54,388 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 81 selfloop transitions, 50 changer transitions 2/143 dead transitions. [2021-03-11 22:45:54,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 143 transitions, 5050 flow [2021-03-11 22:45:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:54,389 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:54,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:54,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,390 INFO L185 Difference]: Start difference. First operand has 248 places, 133 transitions, 4554 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:54,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 143 transitions, 5050 flow [2021-03-11 22:45:54,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 143 transitions, 5012 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:54,426 INFO L241 Difference]: Finished difference. Result has 253 places, 134 transitions, 4693 flow [2021-03-11 22:45:54,426 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4693, PETRI_PLACES=253, PETRI_TRANSITIONS=134} [2021-03-11 22:45:54,426 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2021-03-11 22:45:54,426 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 134 transitions, 4693 flow [2021-03-11 22:45:54,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,427 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:54,427 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:54,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 22:45:54,427 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash -177308870, now seen corresponding path program 76 times [2021-03-11 22:45:54,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:54,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156638954] [2021-03-11 22:45:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:54,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:54,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:54,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:54,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:54,455 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:54,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:54,468 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:54,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156638954] [2021-03-11 22:45:54,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135255106] [2021-03-11 22:45:54,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,484 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 134 transitions, 4693 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:54,564 INFO L129 PetriNetUnfolder]: 0/387 cut-off events. [2021-03-11 22:45:54,565 INFO L130 PetriNetUnfolder]: For 12721/12744 co-relation queries the response was YES. [2021-03-11 22:45:54,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 387 events. 0/387 cut-off events. For 12721/12744 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3766 event pairs, 0 based on Foata normal form. 5/392 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-11 22:45:54,565 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 49 changer transitions 2/141 dead transitions. [2021-03-11 22:45:54,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 141 transitions, 5086 flow [2021-03-11 22:45:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:54,566 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:54,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:54,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,567 INFO L185 Difference]: Start difference. First operand has 253 places, 134 transitions, 4693 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:54,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 141 transitions, 5086 flow [2021-03-11 22:45:54,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 141 transitions, 4998 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-11 22:45:54,602 INFO L241 Difference]: Finished difference. Result has 258 places, 135 transitions, 4747 flow [2021-03-11 22:45:54,602 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4747, PETRI_PLACES=258, PETRI_TRANSITIONS=135} [2021-03-11 22:45:54,602 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2021-03-11 22:45:54,602 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 135 transitions, 4747 flow [2021-03-11 22:45:54,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:54,602 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:54,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 22:45:54,602 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:54,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1440035488, now seen corresponding path program 77 times [2021-03-11 22:45:54,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:54,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732546039] [2021-03-11 22:45:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:54,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:54,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:54,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:54,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:54,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:54,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:54,636 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:54,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732546039] [2021-03-11 22:45:54,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404562247] [2021-03-11 22:45:54,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,651 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 135 transitions, 4747 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:54,729 INFO L129 PetriNetUnfolder]: 0/380 cut-off events. [2021-03-11 22:45:54,730 INFO L130 PetriNetUnfolder]: For 12418/12441 co-relation queries the response was YES. [2021-03-11 22:45:54,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 380 events. 0/380 cut-off events. For 12418/12441 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3660 event pairs, 0 based on Foata normal form. 5/385 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-11 22:45:54,730 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 79 selfloop transitions, 47 changer transitions 3/139 dead transitions. [2021-03-11 22:45:54,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 139 transitions, 5044 flow [2021-03-11 22:45:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:54,731 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:54,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:54,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:54,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,731 INFO L185 Difference]: Start difference. First operand has 258 places, 135 transitions, 4747 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:54,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 139 transitions, 5044 flow [2021-03-11 22:45:54,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 139 transitions, 4943 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:54,769 INFO L241 Difference]: Finished difference. Result has 260 places, 132 transitions, 4629 flow [2021-03-11 22:45:54,769 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4629, PETRI_PLACES=260, PETRI_TRANSITIONS=132} [2021-03-11 22:45:54,769 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2021-03-11 22:45:54,769 INFO L480 AbstractCegarLoop]: Abstraction has has 260 places, 132 transitions, 4629 flow [2021-03-11 22:45:54,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,769 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:54,769 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:54,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 22:45:54,769 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:54,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:54,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1262025256, now seen corresponding path program 78 times [2021-03-11 22:45:54,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:54,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023816434] [2021-03-11 22:45:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:54,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:54,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:54,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:54,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:54,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:54,797 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:54,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:54,808 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:54,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023816434] [2021-03-11 22:45:54,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903457695] [2021-03-11 22:45:54,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,821 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 132 transitions, 4629 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:54,896 INFO L129 PetriNetUnfolder]: 0/371 cut-off events. [2021-03-11 22:45:54,896 INFO L130 PetriNetUnfolder]: For 11933/11956 co-relation queries the response was YES. [2021-03-11 22:45:54,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 371 events. 0/371 cut-off events. For 11933/11956 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3541 event pairs, 0 based on Foata normal form. 5/376 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-11 22:45:54,897 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 47 changer transitions 3/136 dead transitions. [2021-03-11 22:45:54,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 136 transitions, 4920 flow [2021-03-11 22:45:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:54,898 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:54,898 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:54,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:54,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:54,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:54,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,898 INFO L185 Difference]: Start difference. First operand has 260 places, 132 transitions, 4629 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:54,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 136 transitions, 4920 flow [2021-03-11 22:45:54,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 136 transitions, 4826 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:54,934 INFO L241 Difference]: Finished difference. Result has 262 places, 129 transitions, 4516 flow [2021-03-11 22:45:54,934 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4516, PETRI_PLACES=262, PETRI_TRANSITIONS=129} [2021-03-11 22:45:54,934 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2021-03-11 22:45:54,934 INFO L480 AbstractCegarLoop]: Abstraction has has 262 places, 129 transitions, 4516 flow [2021-03-11 22:45:54,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,934 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:54,934 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:54,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 22:45:54,934 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:54,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1329431332, now seen corresponding path program 79 times [2021-03-11 22:45:54,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:54,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251665055] [2021-03-11 22:45:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:54,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:54,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:54,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:54,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:54,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:54,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:54,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:54,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:54,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:54,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251665055] [2021-03-11 22:45:54,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:54,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:54,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978996088] [2021-03-11 22:45:54,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:54,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:54,991 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:54,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 129 transitions, 4516 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:54,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:54,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:54,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,063 INFO L129 PetriNetUnfolder]: 0/362 cut-off events. [2021-03-11 22:45:55,063 INFO L130 PetriNetUnfolder]: For 11553/11573 co-relation queries the response was YES. [2021-03-11 22:45:55,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 362 events. 0/362 cut-off events. For 11553/11573 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3442 event pairs, 0 based on Foata normal form. 4/366 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-11 22:45:55,063 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 78 selfloop transitions, 42 changer transitions 2/132 dead transitions. [2021-03-11 22:45:55,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 132 transitions, 4795 flow [2021-03-11 22:45:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:55,064 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:55,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:55,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:55,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:55,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,065 INFO L185 Difference]: Start difference. First operand has 262 places, 129 transitions, 4516 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:55,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 132 transitions, 4795 flow [2021-03-11 22:45:55,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 132 transitions, 4701 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:55,100 INFO L241 Difference]: Finished difference. Result has 261 places, 128 transitions, 4457 flow [2021-03-11 22:45:55,100 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4426, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4457, PETRI_PLACES=261, PETRI_TRANSITIONS=128} [2021-03-11 22:45:55,100 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2021-03-11 22:45:55,100 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 128 transitions, 4457 flow [2021-03-11 22:45:55,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:55,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:55,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 22:45:55,101 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1662342620, now seen corresponding path program 80 times [2021-03-11 22:45:55,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:55,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066247171] [2021-03-11 22:45:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:55,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:55,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:55,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:55,122 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:55,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:55,130 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:55,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:55,142 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:55,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:55,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066247171] [2021-03-11 22:45:55,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:55,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:55,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022542031] [2021-03-11 22:45:55,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:55,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:55,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:55,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:55,155 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:55,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 128 transitions, 4457 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:55,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:55,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,215 INFO L129 PetriNetUnfolder]: 0/354 cut-off events. [2021-03-11 22:45:55,215 INFO L130 PetriNetUnfolder]: For 11278/11301 co-relation queries the response was YES. [2021-03-11 22:45:55,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 354 events. 0/354 cut-off events. For 11278/11301 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3340 event pairs, 0 based on Foata normal form. 5/359 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-11 22:45:55,216 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 38 changer transitions 5/129 dead transitions. [2021-03-11 22:45:55,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 129 transitions, 4699 flow [2021-03-11 22:45:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-03-11 22:45:55,219 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8194070080862533 [2021-03-11 22:45:55,219 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-03-11 22:45:55,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-03-11 22:45:55,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-03-11 22:45:55,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,220 INFO L185 Difference]: Start difference. First operand has 261 places, 128 transitions, 4457 flow. Second operand 7 states and 304 transitions. [2021-03-11 22:45:55,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 129 transitions, 4699 flow [2021-03-11 22:45:55,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 129 transitions, 4597 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:55,255 INFO L241 Difference]: Finished difference. Result has 261 places, 123 transitions, 4271 flow [2021-03-11 22:45:55,255 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4357, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4271, PETRI_PLACES=261, PETRI_TRANSITIONS=123} [2021-03-11 22:45:55,255 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2021-03-11 22:45:55,256 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 123 transitions, 4271 flow [2021-03-11 22:45:55,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,256 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:55,256 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:55,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 22:45:55,256 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash -26624762, now seen corresponding path program 81 times [2021-03-11 22:45:55,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:55,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959774494] [2021-03-11 22:45:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:55,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:55,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:55,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:55,270 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:55,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:55,283 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:55,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:55,295 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:55,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:55,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959774494] [2021-03-11 22:45:55,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:55,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:55,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858574940] [2021-03-11 22:45:55,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:55,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:55,307 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:55,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 123 transitions, 4271 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:55,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:55,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,373 INFO L129 PetriNetUnfolder]: 0/343 cut-off events. [2021-03-11 22:45:55,373 INFO L130 PetriNetUnfolder]: For 10717/10723 co-relation queries the response was YES. [2021-03-11 22:45:55,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 343 events. 0/343 cut-off events. For 10717/10723 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3222 event pairs, 0 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2021-03-11 22:45:55,373 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 49 changer transitions 3/126 dead transitions. [2021-03-11 22:45:55,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 126 transitions, 4515 flow [2021-03-11 22:45:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:55,374 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:55,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,375 INFO L185 Difference]: Start difference. First operand has 261 places, 123 transitions, 4271 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:55,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 126 transitions, 4515 flow [2021-03-11 22:45:55,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 126 transitions, 4375 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:55,407 INFO L241 Difference]: Finished difference. Result has 257 places, 120 transitions, 4124 flow [2021-03-11 22:45:55,407 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4137, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4124, PETRI_PLACES=257, PETRI_TRANSITIONS=120} [2021-03-11 22:45:55,407 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2021-03-11 22:45:55,407 INFO L480 AbstractCegarLoop]: Abstraction has has 257 places, 120 transitions, 4124 flow [2021-03-11 22:45:55,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:55,407 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:55,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 22:45:55,407 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:55,408 INFO L82 PathProgramCache]: Analyzing trace with hash -277574014, now seen corresponding path program 82 times [2021-03-11 22:45:55,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:55,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838201493] [2021-03-11 22:45:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:55,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:55,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:55,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:55,434 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:55,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:55,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:55,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:55,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838201493] [2021-03-11 22:45:55,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:55,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:55,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055245340] [2021-03-11 22:45:55,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:55,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:55,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:55,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:55,461 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:55,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 120 transitions, 4124 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:55,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:55,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,519 INFO L129 PetriNetUnfolder]: 0/334 cut-off events. [2021-03-11 22:45:55,519 INFO L130 PetriNetUnfolder]: For 10260/10260 co-relation queries the response was YES. [2021-03-11 22:45:55,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 334 events. 0/334 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3095 event pairs, 0 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-11 22:45:55,520 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 47 changer transitions 2/123 dead transitions. [2021-03-11 22:45:55,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 123 transitions, 4362 flow [2021-03-11 22:45:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:55,521 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:55,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,522 INFO L185 Difference]: Start difference. First operand has 257 places, 120 transitions, 4124 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:55,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 123 transitions, 4362 flow [2021-03-11 22:45:55,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 123 transitions, 4248 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:55,553 INFO L241 Difference]: Finished difference. Result has 256 places, 118 transitions, 4031 flow [2021-03-11 22:45:55,553 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4031, PETRI_PLACES=256, PETRI_TRANSITIONS=118} [2021-03-11 22:45:55,554 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2021-03-11 22:45:55,554 INFO L480 AbstractCegarLoop]: Abstraction has has 256 places, 118 transitions, 4031 flow [2021-03-11 22:45:55,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,554 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:55,554 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:55,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 22:45:55,554 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:55,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2006621348, now seen corresponding path program 83 times [2021-03-11 22:45:55,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:55,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857363827] [2021-03-11 22:45:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:55,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:55,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:55,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:55,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:55,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:55,578 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:55,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:55,589 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:55,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:55,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857363827] [2021-03-11 22:45:55,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:55,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:55,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838144772] [2021-03-11 22:45:55,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:55,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:55,600 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:55,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 118 transitions, 4031 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:55,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:55,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,665 INFO L129 PetriNetUnfolder]: 0/326 cut-off events. [2021-03-11 22:45:55,665 INFO L130 PetriNetUnfolder]: For 10091/10097 co-relation queries the response was YES. [2021-03-11 22:45:55,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 326 events. 0/326 cut-off events. For 10091/10097 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2991 event pairs, 0 based on Foata normal form. 3/329 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-11 22:45:55,666 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 44 changer transitions 3/121 dead transitions. [2021-03-11 22:45:55,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 121 transitions, 4265 flow [2021-03-11 22:45:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:55,666 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:55,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,667 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,667 INFO L185 Difference]: Start difference. First operand has 256 places, 118 transitions, 4031 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:55,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 121 transitions, 4265 flow [2021-03-11 22:45:55,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 121 transitions, 4143 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:55,699 INFO L241 Difference]: Finished difference. Result has 254 places, 115 transitions, 3902 flow [2021-03-11 22:45:55,699 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3902, PETRI_PLACES=254, PETRI_TRANSITIONS=115} [2021-03-11 22:45:55,699 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2021-03-11 22:45:55,699 INFO L480 AbstractCegarLoop]: Abstraction has has 254 places, 115 transitions, 3902 flow [2021-03-11 22:45:55,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,699 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:55,699 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:55,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 22:45:55,700 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:55,700 INFO L82 PathProgramCache]: Analyzing trace with hash -2001244110, now seen corresponding path program 84 times [2021-03-11 22:45:55,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:55,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680334037] [2021-03-11 22:45:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:55,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:55,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:55,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:55,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:55,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:55,732 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:55,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:55,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:55,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:55,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680334037] [2021-03-11 22:45:55,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:55,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:55,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877648121] [2021-03-11 22:45:55,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:55,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:55,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:55,757 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:55,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 115 transitions, 3902 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:55,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:55,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,821 INFO L129 PetriNetUnfolder]: 0/317 cut-off events. [2021-03-11 22:45:55,821 INFO L130 PetriNetUnfolder]: For 9702/9702 co-relation queries the response was YES. [2021-03-11 22:45:55,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 317 events. 0/317 cut-off events. For 9702/9702 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2885 event pairs, 0 based on Foata normal form. 1/318 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2021-03-11 22:45:55,822 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 57 selfloop transitions, 49 changer transitions 2/118 dead transitions. [2021-03-11 22:45:55,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 118 transitions, 4130 flow [2021-03-11 22:45:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:55,822 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:55,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,823 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,823 INFO L185 Difference]: Start difference. First operand has 254 places, 115 transitions, 3902 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 118 transitions, 4130 flow [2021-03-11 22:45:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 118 transitions, 4046 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:55,852 INFO L241 Difference]: Finished difference. Result has 253 places, 113 transitions, 3842 flow [2021-03-11 22:45:55,853 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3842, PETRI_PLACES=253, PETRI_TRANSITIONS=113} [2021-03-11 22:45:55,853 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2021-03-11 22:45:55,853 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 113 transitions, 3842 flow [2021-03-11 22:45:55,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,853 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:55,853 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:55,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 22:45:55,853 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash 2110382564, now seen corresponding path program 85 times [2021-03-11 22:45:55,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:55,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157905895] [2021-03-11 22:45:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:55,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:55,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:55,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:55,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:55,877 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:55,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:55,888 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:55,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:55,904 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:55,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:55,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157905895] [2021-03-11 22:45:55,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:55,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:55,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211913104] [2021-03-11 22:45:55,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:55,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:55,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:55,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:55,918 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:55,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 113 transitions, 3842 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:55,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:55,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:55,986 INFO L129 PetriNetUnfolder]: 0/311 cut-off events. [2021-03-11 22:45:55,986 INFO L130 PetriNetUnfolder]: For 9615/9615 co-relation queries the response was YES. [2021-03-11 22:45:55,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 311 events. 0/311 cut-off events. For 9615/9615 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2806 event pairs, 0 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-11 22:45:55,987 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 47 changer transitions 3/116 dead transitions. [2021-03-11 22:45:55,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 116 transitions, 4066 flow [2021-03-11 22:45:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:55,988 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:55,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:55,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:55,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:55,989 INFO L185 Difference]: Start difference. First operand has 253 places, 113 transitions, 3842 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:55,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 116 transitions, 4066 flow [2021-03-11 22:45:56,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 116 transitions, 3967 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:56,018 INFO L241 Difference]: Finished difference. Result has 252 places, 110 transitions, 3729 flow [2021-03-11 22:45:56,018 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3729, PETRI_PLACES=252, PETRI_TRANSITIONS=110} [2021-03-11 22:45:56,018 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2021-03-11 22:45:56,018 INFO L480 AbstractCegarLoop]: Abstraction has has 252 places, 110 transitions, 3729 flow [2021-03-11 22:45:56,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,018 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,018 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 22:45:56,019 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,019 INFO L82 PathProgramCache]: Analyzing trace with hash -222539876, now seen corresponding path program 86 times [2021-03-11 22:45:56,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58101009] [2021-03-11 22:45:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:56,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:56,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:56,039 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:56,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:56,050 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58101009] [2021-03-11 22:45:56,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458879564] [2021-03-11 22:45:56,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,061 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 110 transitions, 3729 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,113 INFO L129 PetriNetUnfolder]: 0/303 cut-off events. [2021-03-11 22:45:56,114 INFO L130 PetriNetUnfolder]: For 9181/9187 co-relation queries the response was YES. [2021-03-11 22:45:56,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 303 events. 0/303 cut-off events. For 9181/9187 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2719 event pairs, 0 based on Foata normal form. 3/306 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-11 22:45:56,114 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 46 changer transitions 4/113 dead transitions. [2021-03-11 22:45:56,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 113 transitions, 3947 flow [2021-03-11 22:45:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:56,115 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:56,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,116 INFO L185 Difference]: Start difference. First operand has 252 places, 110 transitions, 3729 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:56,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 113 transitions, 3947 flow [2021-03-11 22:45:56,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 113 transitions, 3817 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-03-11 22:45:56,144 INFO L241 Difference]: Finished difference. Result has 246 places, 106 transitions, 3562 flow [2021-03-11 22:45:56,144 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3562, PETRI_PLACES=246, PETRI_TRANSITIONS=106} [2021-03-11 22:45:56,144 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2021-03-11 22:45:56,144 INFO L480 AbstractCegarLoop]: Abstraction has has 246 places, 106 transitions, 3562 flow [2021-03-11 22:45:56,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,144 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,144 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 22:45:56,145 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash -233042980, now seen corresponding path program 87 times [2021-03-11 22:45:56,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500950991] [2021-03-11 22:45:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:56,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:56,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:56,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:56,182 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:56,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:56,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500950991] [2021-03-11 22:45:56,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155858842] [2021-03-11 22:45:56,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,207 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 106 transitions, 3562 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,261 INFO L129 PetriNetUnfolder]: 0/293 cut-off events. [2021-03-11 22:45:56,261 INFO L130 PetriNetUnfolder]: For 8576/8582 co-relation queries the response was YES. [2021-03-11 22:45:56,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 293 events. 0/293 cut-off events. For 8576/8582 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2596 event pairs, 0 based on Foata normal form. 3/296 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2021-03-11 22:45:56,261 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 45 changer transitions 2/109 dead transitions. [2021-03-11 22:45:56,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 109 transitions, 3772 flow [2021-03-11 22:45:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:56,262 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:56,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,263 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,263 INFO L185 Difference]: Start difference. First operand has 246 places, 106 transitions, 3562 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:56,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 109 transitions, 3772 flow [2021-03-11 22:45:56,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 109 transitions, 3591 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-11 22:45:56,287 INFO L241 Difference]: Finished difference. Result has 240 places, 104 transitions, 3394 flow [2021-03-11 22:45:56,287 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3394, PETRI_PLACES=240, PETRI_TRANSITIONS=104} [2021-03-11 22:45:56,287 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-11 22:45:56,287 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 104 transitions, 3394 flow [2021-03-11 22:45:56,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,287 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,287 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 22:45:56,287 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1328152634, now seen corresponding path program 88 times [2021-03-11 22:45:56,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071239283] [2021-03-11 22:45:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:56,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:56,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:56,315 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:56,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:56,327 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071239283] [2021-03-11 22:45:56,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705348343] [2021-03-11 22:45:56,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,340 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 104 transitions, 3394 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,406 INFO L129 PetriNetUnfolder]: 0/286 cut-off events. [2021-03-11 22:45:56,406 INFO L130 PetriNetUnfolder]: For 7613/7613 co-relation queries the response was YES. [2021-03-11 22:45:56,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 286 events. 0/286 cut-off events. For 7613/7613 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2500 event pairs, 0 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-11 22:45:56,406 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 41 changer transitions 2/107 dead transitions. [2021-03-11 22:45:56,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 107 transitions, 3600 flow [2021-03-11 22:45:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:56,407 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:56,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,408 INFO L185 Difference]: Start difference. First operand has 240 places, 104 transitions, 3394 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:56,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 107 transitions, 3600 flow [2021-03-11 22:45:56,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 107 transitions, 3521 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:56,431 INFO L241 Difference]: Finished difference. Result has 240 places, 102 transitions, 3322 flow [2021-03-11 22:45:56,431 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3322, PETRI_PLACES=240, PETRI_TRANSITIONS=102} [2021-03-11 22:45:56,431 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-11 22:45:56,432 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 102 transitions, 3322 flow [2021-03-11 22:45:56,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,432 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,432 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 22:45:56,432 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1351516798, now seen corresponding path program 89 times [2021-03-11 22:45:56,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395298222] [2021-03-11 22:45:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:56,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:56,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:56,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:56,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:56,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395298222] [2021-03-11 22:45:56,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017172553] [2021-03-11 22:45:56,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,483 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 102 transitions, 3322 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,546 INFO L129 PetriNetUnfolder]: 0/279 cut-off events. [2021-03-11 22:45:56,546 INFO L130 PetriNetUnfolder]: For 7345/7351 co-relation queries the response was YES. [2021-03-11 22:45:56,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 279 events. 0/279 cut-off events. For 7345/7351 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2413 event pairs, 0 based on Foata normal form. 3/282 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-11 22:45:56,547 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 37 changer transitions 3/104 dead transitions. [2021-03-11 22:45:56,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 104 transitions, 3518 flow [2021-03-11 22:45:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:56,547 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:56,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:56,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:56,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:56,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,548 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,548 INFO L185 Difference]: Start difference. First operand has 240 places, 102 transitions, 3322 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:56,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 104 transitions, 3518 flow [2021-03-11 22:45:56,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 104 transitions, 3454 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:56,570 INFO L241 Difference]: Finished difference. Result has 240 places, 99 transitions, 3227 flow [2021-03-11 22:45:56,570 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3227, PETRI_PLACES=240, PETRI_TRANSITIONS=99} [2021-03-11 22:45:56,570 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-11 22:45:56,570 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 99 transitions, 3227 flow [2021-03-11 22:45:56,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,570 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,570 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 22:45:56,571 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1032779616, now seen corresponding path program 90 times [2021-03-11 22:45:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767219657] [2021-03-11 22:45:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:56,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:56,592 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:56,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:56,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:56,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:56,615 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767219657] [2021-03-11 22:45:56,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317694260] [2021-03-11 22:45:56,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,628 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 99 transitions, 3227 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,677 INFO L129 PetriNetUnfolder]: 0/271 cut-off events. [2021-03-11 22:45:56,677 INFO L130 PetriNetUnfolder]: For 7318/7324 co-relation queries the response was YES. [2021-03-11 22:45:56,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 271 events. 0/271 cut-off events. For 7318/7324 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2309 event pairs, 0 based on Foata normal form. 3/274 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-11 22:45:56,677 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 51 selfloop transitions, 38 changer transitions 3/102 dead transitions. [2021-03-11 22:45:56,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 102 transitions, 3423 flow [2021-03-11 22:45:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:56,679 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:56,679 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,681 INFO L185 Difference]: Start difference. First operand has 240 places, 99 transitions, 3227 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:56,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 102 transitions, 3423 flow [2021-03-11 22:45:56,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 102 transitions, 3281 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:56,703 INFO L241 Difference]: Finished difference. Result has 235 places, 96 transitions, 3070 flow [2021-03-11 22:45:56,703 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3070, PETRI_PLACES=235, PETRI_TRANSITIONS=96} [2021-03-11 22:45:56,703 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2021-03-11 22:45:56,703 INFO L480 AbstractCegarLoop]: Abstraction has has 235 places, 96 transitions, 3070 flow [2021-03-11 22:45:56,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,703 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,703 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 22:45:56,703 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash -739389246, now seen corresponding path program 91 times [2021-03-11 22:45:56,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716306259] [2021-03-11 22:45:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:56,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:56,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:56,730 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:56,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:56,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716306259] [2021-03-11 22:45:56,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58582873] [2021-03-11 22:45:56,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,760 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 96 transitions, 3070 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,806 INFO L129 PetriNetUnfolder]: 0/262 cut-off events. [2021-03-11 22:45:56,806 INFO L130 PetriNetUnfolder]: For 6540/6540 co-relation queries the response was YES. [2021-03-11 22:45:56,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 262 events. 0/262 cut-off events. For 6540/6540 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2210 event pairs, 0 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-11 22:45:56,807 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 42 changer transitions 2/99 dead transitions. [2021-03-11 22:45:56,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 99 transitions, 3260 flow [2021-03-11 22:45:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:56,807 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:56,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:56,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,808 INFO L185 Difference]: Start difference. First operand has 235 places, 96 transitions, 3070 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:56,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 99 transitions, 3260 flow [2021-03-11 22:45:56,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 99 transitions, 3171 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:56,828 INFO L241 Difference]: Finished difference. Result has 234 places, 94 transitions, 2992 flow [2021-03-11 22:45:56,828 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2992, PETRI_PLACES=234, PETRI_TRANSITIONS=94} [2021-03-11 22:45:56,828 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2021-03-11 22:45:56,828 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 94 transitions, 2992 flow [2021-03-11 22:45:56,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,828 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,828 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 22:45:56,828 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,828 INFO L82 PathProgramCache]: Analyzing trace with hash -35359494, now seen corresponding path program 92 times [2021-03-11 22:45:56,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756563517] [2021-03-11 22:45:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:56,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:56,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:56,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:56,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:56,872 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:56,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:56,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756563517] [2021-03-11 22:45:56,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:56,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:56,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940169271] [2021-03-11 22:45:56,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:56,887 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:56,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 94 transitions, 2992 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:56,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:56,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:56,947 INFO L129 PetriNetUnfolder]: 0/255 cut-off events. [2021-03-11 22:45:56,948 INFO L130 PetriNetUnfolder]: For 6470/6476 co-relation queries the response was YES. [2021-03-11 22:45:56,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 255 events. 0/255 cut-off events. For 6470/6476 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2132 event pairs, 0 based on Foata normal form. 3/258 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-11 22:45:56,948 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 37 changer transitions 4/96 dead transitions. [2021-03-11 22:45:56,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 96 transitions, 3172 flow [2021-03-11 22:45:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:56,949 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:56,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:56,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:56,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:56,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:56,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,950 INFO L185 Difference]: Start difference. First operand has 234 places, 94 transitions, 2992 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:56,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 96 transitions, 3172 flow [2021-03-11 22:45:56,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 96 transitions, 3094 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:56,968 INFO L241 Difference]: Finished difference. Result has 231 places, 90 transitions, 2864 flow [2021-03-11 22:45:56,969 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2864, PETRI_PLACES=231, PETRI_TRANSITIONS=90} [2021-03-11 22:45:56,969 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2021-03-11 22:45:56,969 INFO L480 AbstractCegarLoop]: Abstraction has has 231 places, 90 transitions, 2864 flow [2021-03-11 22:45:56,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:56,969 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:56,969 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:56,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 22:45:56,969 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:56,969 INFO L82 PathProgramCache]: Analyzing trace with hash -594221280, now seen corresponding path program 93 times [2021-03-11 22:45:56,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:56,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712662392] [2021-03-11 22:45:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:56,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:56,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:56,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:56,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:56,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:56,989 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:56,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:57,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,018 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712662392] [2021-03-11 22:45:57,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691274654] [2021-03-11 22:45:57,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,036 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 90 transitions, 2864 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,093 INFO L129 PetriNetUnfolder]: 0/245 cut-off events. [2021-03-11 22:45:57,093 INFO L130 PetriNetUnfolder]: For 5931/5937 co-relation queries the response was YES. [2021-03-11 22:45:57,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 245 events. 0/245 cut-off events. For 5931/5937 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2023 event pairs, 0 based on Foata normal form. 3/248 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-11 22:45:57,093 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 39 changer transitions 3/93 dead transitions. [2021-03-11 22:45:57,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 93 transitions, 3042 flow [2021-03-11 22:45:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-11 22:45:57,094 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-11 22:45:57,094 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-11 22:45:57,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-11 22:45:57,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-11 22:45:57,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,095 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,095 INFO L185 Difference]: Start difference. First operand has 231 places, 90 transitions, 2864 flow. Second operand 7 states and 307 transitions. [2021-03-11 22:45:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 93 transitions, 3042 flow [2021-03-11 22:45:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 93 transitions, 2935 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-11 22:45:57,112 INFO L241 Difference]: Finished difference. Result has 228 places, 87 transitions, 2739 flow [2021-03-11 22:45:57,112 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2739, PETRI_PLACES=228, PETRI_TRANSITIONS=87} [2021-03-11 22:45:57,112 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2021-03-11 22:45:57,112 INFO L480 AbstractCegarLoop]: Abstraction has has 228 places, 87 transitions, 2739 flow [2021-03-11 22:45:57,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,112 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,112 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 22:45:57,112 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1028080186, now seen corresponding path program 94 times [2021-03-11 22:45:57,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570982784] [2021-03-11 22:45:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:57,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:57,137 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,149 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:57,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:57,164 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570982784] [2021-03-11 22:45:57,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283773526] [2021-03-11 22:45:57,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,179 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 87 transitions, 2739 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,224 INFO L129 PetriNetUnfolder]: 0/236 cut-off events. [2021-03-11 22:45:57,224 INFO L130 PetriNetUnfolder]: For 5480/5480 co-relation queries the response was YES. [2021-03-11 22:45:57,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 236 events. 0/236 cut-off events. For 5480/5480 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1909 event pairs, 0 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-11 22:45:57,225 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 37 changer transitions 2/90 dead transitions. [2021-03-11 22:45:57,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 90 transitions, 2911 flow [2021-03-11 22:45:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:57,225 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:57,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,226 INFO L185 Difference]: Start difference. First operand has 228 places, 87 transitions, 2739 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:57,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 90 transitions, 2911 flow [2021-03-11 22:45:57,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 90 transitions, 2774 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-03-11 22:45:57,243 INFO L241 Difference]: Finished difference. Result has 219 places, 85 transitions, 2609 flow [2021-03-11 22:45:57,243 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2609, PETRI_PLACES=219, PETRI_TRANSITIONS=85} [2021-03-11 22:45:57,243 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2021-03-11 22:45:57,243 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 85 transitions, 2609 flow [2021-03-11 22:45:57,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,243 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,243 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 22:45:57,243 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,244 INFO L82 PathProgramCache]: Analyzing trace with hash 840042400, now seen corresponding path program 95 times [2021-03-11 22:45:57,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398064866] [2021-03-11 22:45:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,252 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:57,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:57,262 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,286 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:57,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:57,308 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398064866] [2021-03-11 22:45:57,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350347048] [2021-03-11 22:45:57,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,321 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 85 transitions, 2609 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,365 INFO L129 PetriNetUnfolder]: 0/228 cut-off events. [2021-03-11 22:45:57,365 INFO L130 PetriNetUnfolder]: For 5180/5186 co-relation queries the response was YES. [2021-03-11 22:45:57,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 228 events. 0/228 cut-off events. For 5180/5186 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1833 event pairs, 0 based on Foata normal form. 3/231 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-11 22:45:57,365 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 38 selfloop transitions, 36 changer transitions 4/88 dead transitions. [2021-03-11 22:45:57,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 88 transitions, 2777 flow [2021-03-11 22:45:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-03-11 22:45:57,367 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2021-03-11 22:45:57,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-03-11 22:45:57,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-03-11 22:45:57,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-03-11 22:45:57,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,368 INFO L185 Difference]: Start difference. First operand has 219 places, 85 transitions, 2609 flow. Second operand 7 states and 305 transitions. [2021-03-11 22:45:57,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 88 transitions, 2777 flow [2021-03-11 22:45:57,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 88 transitions, 2623 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-03-11 22:45:57,384 INFO L241 Difference]: Finished difference. Result has 208 places, 81 transitions, 2411 flow [2021-03-11 22:45:57,384 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2411, PETRI_PLACES=208, PETRI_TRANSITIONS=81} [2021-03-11 22:45:57,384 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2021-03-11 22:45:57,384 INFO L480 AbstractCegarLoop]: Abstraction has has 208 places, 81 transitions, 2411 flow [2021-03-11 22:45:57,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,384 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,384 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 22:45:57,384 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1206616672, now seen corresponding path program 96 times [2021-03-11 22:45:57,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443722092] [2021-03-11 22:45:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:57,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:57,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:57,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:57,407 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,418 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443722092] [2021-03-11 22:45:57,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95214061] [2021-03-11 22:45:57,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,430 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 81 transitions, 2411 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,496 INFO L129 PetriNetUnfolder]: 0/218 cut-off events. [2021-03-11 22:45:57,496 INFO L130 PetriNetUnfolder]: For 4731/4737 co-relation queries the response was YES. [2021-03-11 22:45:57,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 218 events. 0/218 cut-off events. For 4731/4737 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1726 event pairs, 0 based on Foata normal form. 3/221 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-11 22:45:57,496 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 21 changer transitions 2/85 dead transitions. [2021-03-11 22:45:57,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 85 transitions, 2621 flow [2021-03-11 22:45:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:57,497 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:57,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,498 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,498 INFO L185 Difference]: Start difference. First operand has 208 places, 81 transitions, 2411 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:57,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 85 transitions, 2621 flow [2021-03-11 22:45:57,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 85 transitions, 2304 flow, removed 11 selfloop flow, removed 18 redundant places. [2021-03-11 22:45:57,511 INFO L241 Difference]: Finished difference. Result has 182 places, 81 transitions, 2138 flow [2021-03-11 22:45:57,511 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2138, PETRI_PLACES=182, PETRI_TRANSITIONS=81} [2021-03-11 22:45:57,512 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2021-03-11 22:45:57,512 INFO L480 AbstractCegarLoop]: Abstraction has has 182 places, 81 transitions, 2138 flow [2021-03-11 22:45:57,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,512 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,512 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 22:45:57,512 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash -222271836, now seen corresponding path program 97 times [2021-03-11 22:45:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460278126] [2021-03-11 22:45:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:57,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:57,526 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:57,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:57,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:57,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:57,546 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460278126] [2021-03-11 22:45:57,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729467184] [2021-03-11 22:45:57,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,558 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 81 transitions, 2138 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,597 INFO L129 PetriNetUnfolder]: 0/210 cut-off events. [2021-03-11 22:45:57,597 INFO L130 PetriNetUnfolder]: For 3201/3201 co-relation queries the response was YES. [2021-03-11 22:45:57,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 210 events. 0/210 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1642 event pairs, 0 based on Foata normal form. 1/211 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-11 22:45:57,598 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 51 selfloop transitions, 19 changer transitions 3/83 dead transitions. [2021-03-11 22:45:57,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 83 transitions, 2292 flow [2021-03-11 22:45:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:57,599 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:57,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,600 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,600 INFO L185 Difference]: Start difference. First operand has 182 places, 81 transitions, 2138 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:57,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 83 transitions, 2292 flow [2021-03-11 22:45:57,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 83 transitions, 2234 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:57,610 INFO L241 Difference]: Finished difference. Result has 184 places, 78 transitions, 2037 flow [2021-03-11 22:45:57,611 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2037, PETRI_PLACES=184, PETRI_TRANSITIONS=78} [2021-03-11 22:45:57,611 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2021-03-11 22:45:57,611 INFO L480 AbstractCegarLoop]: Abstraction has has 184 places, 78 transitions, 2037 flow [2021-03-11 22:45:57,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,611 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,611 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 22:45:57,611 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash -572518330, now seen corresponding path program 98 times [2021-03-11 22:45:57,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700119616] [2021-03-11 22:45:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:57,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:57,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:57,634 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,645 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700119616] [2021-03-11 22:45:57,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859684871] [2021-03-11 22:45:57,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,658 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 78 transitions, 2037 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,710 INFO L129 PetriNetUnfolder]: 0/201 cut-off events. [2021-03-11 22:45:57,710 INFO L130 PetriNetUnfolder]: For 2981/2981 co-relation queries the response was YES. [2021-03-11 22:45:57,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 201 events. 0/201 cut-off events. For 2981/2981 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1540 event pairs, 0 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-11 22:45:57,710 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 50 selfloop transitions, 18 changer transitions 2/80 dead transitions. [2021-03-11 22:45:57,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 80 transitions, 2185 flow [2021-03-11 22:45:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-11 22:45:57,711 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-11 22:45:57,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-11 22:45:57,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,712 INFO L185 Difference]: Start difference. First operand has 184 places, 78 transitions, 2037 flow. Second operand 7 states and 306 transitions. [2021-03-11 22:45:57,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 80 transitions, 2185 flow [2021-03-11 22:45:57,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 80 transitions, 2146 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 22:45:57,722 INFO L241 Difference]: Finished difference. Result has 186 places, 76 transitions, 1968 flow [2021-03-11 22:45:57,722 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1968, PETRI_PLACES=186, PETRI_TRANSITIONS=76} [2021-03-11 22:45:57,722 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2021-03-11 22:45:57,722 INFO L480 AbstractCegarLoop]: Abstraction has has 186 places, 76 transitions, 1968 flow [2021-03-11 22:45:57,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,723 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 22:45:57,723 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1560220534, now seen corresponding path program 99 times [2021-03-11 22:45:57,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294584441] [2021-03-11 22:45:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:57,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:57,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:57,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:57,747 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,758 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294584441] [2021-03-11 22:45:57,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308644171] [2021-03-11 22:45:57,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,771 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 76 transitions, 1968 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,815 INFO L129 PetriNetUnfolder]: 0/194 cut-off events. [2021-03-11 22:45:57,815 INFO L130 PetriNetUnfolder]: For 2888/2894 co-relation queries the response was YES. [2021-03-11 22:45:57,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 194 events. 0/194 cut-off events. For 2888/2894 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1463 event pairs, 0 based on Foata normal form. 3/197 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-11 22:45:57,816 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 48 selfloop transitions, 16 changer transitions 3/77 dead transitions. [2021-03-11 22:45:57,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 77 transitions, 2106 flow [2021-03-11 22:45:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-03-11 22:45:57,817 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8194070080862533 [2021-03-11 22:45:57,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-03-11 22:45:57,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-03-11 22:45:57,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-03-11 22:45:57,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,818 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,818 INFO L185 Difference]: Start difference. First operand has 186 places, 76 transitions, 1968 flow. Second operand 7 states and 304 transitions. [2021-03-11 22:45:57,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 77 transitions, 2106 flow [2021-03-11 22:45:57,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 77 transitions, 2011 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:57,828 INFO L241 Difference]: Finished difference. Result has 185 places, 73 transitions, 1823 flow [2021-03-11 22:45:57,828 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1823, PETRI_PLACES=185, PETRI_TRANSITIONS=73} [2021-03-11 22:45:57,828 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2021-03-11 22:45:57,828 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 73 transitions, 1823 flow [2021-03-11 22:45:57,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,828 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,828 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 22:45:57,829 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,829 INFO L82 PathProgramCache]: Analyzing trace with hash 522430662, now seen corresponding path program 100 times [2021-03-11 22:45:57,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094357165] [2021-03-11 22:45:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:57,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:57,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:57,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:57,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:57,863 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094357165] [2021-03-11 22:45:57,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358694047] [2021-03-11 22:45:57,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,876 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 73 transitions, 1823 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:57,909 INFO L129 PetriNetUnfolder]: 0/185 cut-off events. [2021-03-11 22:45:57,909 INFO L130 PetriNetUnfolder]: For 2530/2535 co-relation queries the response was YES. [2021-03-11 22:45:57,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 185 events. 0/185 cut-off events. For 2530/2535 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1370 event pairs, 0 based on Foata normal form. 3/188 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-11 22:45:57,910 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 13 changer transitions 5/73 dead transitions. [2021-03-11 22:45:57,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 73 transitions, 1949 flow [2021-03-11 22:45:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-11 22:45:57,910 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 22:45:57,910 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-11 22:45:57,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-11 22:45:57,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:57,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-11 22:45:57,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,911 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,911 INFO L185 Difference]: Start difference. First operand has 185 places, 73 transitions, 1823 flow. Second operand 7 states and 301 transitions. [2021-03-11 22:45:57,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 73 transitions, 1949 flow [2021-03-11 22:45:57,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 73 transitions, 1887 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:57,920 INFO L241 Difference]: Finished difference. Result has 181 places, 68 transitions, 1681 flow [2021-03-11 22:45:57,920 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1681, PETRI_PLACES=181, PETRI_TRANSITIONS=68} [2021-03-11 22:45:57,920 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2021-03-11 22:45:57,920 INFO L480 AbstractCegarLoop]: Abstraction has has 181 places, 68 transitions, 1681 flow [2021-03-11 22:45:57,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,921 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:57,921 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:57,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 22:45:57,921 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1266171808, now seen corresponding path program 101 times [2021-03-11 22:45:57,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:57,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819879183] [2021-03-11 22:45:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:57,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:57,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:57,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:57,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:57,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:57,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:57,945 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:57,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:57,956 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:57,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819879183] [2021-03-11 22:45:57,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:57,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:57,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031616329] [2021-03-11 22:45:57,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:57,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:57,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:57,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:57,971 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:57,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 68 transitions, 1681 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:57,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:57,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:57,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,017 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-03-11 22:45:58,017 INFO L130 PetriNetUnfolder]: For 2291/2291 co-relation queries the response was YES. [2021-03-11 22:45:58,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 174 events. 0/174 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1271 event pairs, 0 based on Foata normal form. 1/175 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2021-03-11 22:45:58,017 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 25 changer transitions 2/70 dead transitions. [2021-03-11 22:45:58,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 70 transitions, 1809 flow [2021-03-11 22:45:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,018 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,018 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,019 INFO L185 Difference]: Start difference. First operand has 181 places, 68 transitions, 1681 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 70 transitions, 1809 flow [2021-03-11 22:45:58,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 70 transitions, 1728 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-11 22:45:58,027 INFO L241 Difference]: Finished difference. Result has 168 places, 66 transitions, 1598 flow [2021-03-11 22:45:58,027 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1598, PETRI_PLACES=168, PETRI_TRANSITIONS=66} [2021-03-11 22:45:58,027 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2021-03-11 22:45:58,027 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 66 transitions, 1598 flow [2021-03-11 22:45:58,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,027 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 22:45:58,027 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,028 INFO L82 PathProgramCache]: Analyzing trace with hash 796857824, now seen corresponding path program 102 times [2021-03-11 22:45:58,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785359306] [2021-03-11 22:45:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:58,045 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:58,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:58,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:58,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:58,064 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785359306] [2021-03-11 22:45:58,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877554296] [2021-03-11 22:45:58,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,077 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 66 transitions, 1598 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,121 INFO L129 PetriNetUnfolder]: 0/166 cut-off events. [2021-03-11 22:45:58,121 INFO L130 PetriNetUnfolder]: For 1986/1986 co-relation queries the response was YES. [2021-03-11 22:45:58,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 166 events. 0/166 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1187 event pairs, 0 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2021-03-11 22:45:58,121 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 31 selfloop transitions, 24 changer transitions 3/68 dead transitions. [2021-03-11 22:45:58,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 68 transitions, 1722 flow [2021-03-11 22:45:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,122 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,123 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,123 INFO L185 Difference]: Start difference. First operand has 168 places, 66 transitions, 1598 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 68 transitions, 1722 flow [2021-03-11 22:45:58,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 68 transitions, 1658 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:58,130 INFO L241 Difference]: Finished difference. Result has 167 places, 63 transitions, 1506 flow [2021-03-11 22:45:58,130 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1506, PETRI_PLACES=167, PETRI_TRANSITIONS=63} [2021-03-11 22:45:58,130 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2021-03-11 22:45:58,130 INFO L480 AbstractCegarLoop]: Abstraction has has 167 places, 63 transitions, 1506 flow [2021-03-11 22:45:58,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,131 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,131 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 22:45:58,131 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1517526880, now seen corresponding path program 103 times [2021-03-11 22:45:58,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766897672] [2021-03-11 22:45:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,142 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:58,151 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:58,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:58,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:58,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:58,173 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766897672] [2021-03-11 22:45:58,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062198383] [2021-03-11 22:45:58,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,185 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 63 transitions, 1506 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,218 INFO L129 PetriNetUnfolder]: 0/157 cut-off events. [2021-03-11 22:45:58,218 INFO L130 PetriNetUnfolder]: For 1872/1872 co-relation queries the response was YES. [2021-03-11 22:45:58,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 157 events. 0/157 cut-off events. For 1872/1872 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1096 event pairs, 0 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-11 22:45:58,219 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 25 changer transitions 2/65 dead transitions. [2021-03-11 22:45:58,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 65 transitions, 1624 flow [2021-03-11 22:45:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,219 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,219 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,220 INFO L185 Difference]: Start difference. First operand has 167 places, 63 transitions, 1506 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 65 transitions, 1624 flow [2021-03-11 22:45:58,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 65 transitions, 1562 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:58,227 INFO L241 Difference]: Finished difference. Result has 166 places, 61 transitions, 1443 flow [2021-03-11 22:45:58,227 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1443, PETRI_PLACES=166, PETRI_TRANSITIONS=61} [2021-03-11 22:45:58,227 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2021-03-11 22:45:58,227 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 61 transitions, 1443 flow [2021-03-11 22:45:58,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,227 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,227 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 22:45:58,227 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1793095580, now seen corresponding path program 104 times [2021-03-11 22:45:58,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165069976] [2021-03-11 22:45:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:58,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:58,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:58,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:58,254 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:58,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:58,265 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165069976] [2021-03-11 22:45:58,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363465207] [2021-03-11 22:45:58,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,277 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 61 transitions, 1443 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,319 INFO L129 PetriNetUnfolder]: 0/149 cut-off events. [2021-03-11 22:45:58,319 INFO L130 PetriNetUnfolder]: For 1796/1796 co-relation queries the response was YES. [2021-03-11 22:45:58,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 149 events. 0/149 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1006 event pairs, 0 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-03-11 22:45:58,319 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 23 changer transitions 2/63 dead transitions. [2021-03-11 22:45:58,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 63 transitions, 1557 flow [2021-03-11 22:45:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,320 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,320 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,321 INFO L185 Difference]: Start difference. First operand has 166 places, 61 transitions, 1443 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 63 transitions, 1557 flow [2021-03-11 22:45:58,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 63 transitions, 1492 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:58,327 INFO L241 Difference]: Finished difference. Result has 165 places, 59 transitions, 1373 flow [2021-03-11 22:45:58,327 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1373, PETRI_PLACES=165, PETRI_TRANSITIONS=59} [2021-03-11 22:45:58,327 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2021-03-11 22:45:58,328 INFO L480 AbstractCegarLoop]: Abstraction has has 165 places, 59 transitions, 1373 flow [2021-03-11 22:45:58,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,328 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,328 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 22:45:58,328 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1189143998, now seen corresponding path program 105 times [2021-03-11 22:45:58,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082121858] [2021-03-11 22:45:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:58,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:58,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:58,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:58,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:58,366 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082121858] [2021-03-11 22:45:58,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620165941] [2021-03-11 22:45:58,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,379 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 59 transitions, 1373 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,415 INFO L129 PetriNetUnfolder]: 0/141 cut-off events. [2021-03-11 22:45:58,415 INFO L130 PetriNetUnfolder]: For 1707/1707 co-relation queries the response was YES. [2021-03-11 22:45:58,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 141 events. 0/141 cut-off events. For 1707/1707 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 917 event pairs, 0 based on Foata normal form. 1/142 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-11 22:45:58,415 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 26 selfloop transitions, 22 changer transitions 3/61 dead transitions. [2021-03-11 22:45:58,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 61 transitions, 1483 flow [2021-03-11 22:45:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,416 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,417 INFO L185 Difference]: Start difference. First operand has 165 places, 59 transitions, 1373 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 61 transitions, 1483 flow [2021-03-11 22:45:58,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 61 transitions, 1424 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:58,423 INFO L241 Difference]: Finished difference. Result has 164 places, 56 transitions, 1286 flow [2021-03-11 22:45:58,423 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1286, PETRI_PLACES=164, PETRI_TRANSITIONS=56} [2021-03-11 22:45:58,423 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 132 predicate places. [2021-03-11 22:45:58,423 INFO L480 AbstractCegarLoop]: Abstraction has has 164 places, 56 transitions, 1286 flow [2021-03-11 22:45:58,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,423 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,423 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 22:45:58,423 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,424 INFO L82 PathProgramCache]: Analyzing trace with hash -772824382, now seen corresponding path program 106 times [2021-03-11 22:45:58,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471286851] [2021-03-11 22:45:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:58,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:58,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:58,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:58,446 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:58,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:58,459 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471286851] [2021-03-11 22:45:58,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595574734] [2021-03-11 22:45:58,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,471 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 56 transitions, 1286 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,504 INFO L129 PetriNetUnfolder]: 0/132 cut-off events. [2021-03-11 22:45:58,504 INFO L130 PetriNetUnfolder]: For 1627/1627 co-relation queries the response was YES. [2021-03-11 22:45:58,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 132 events. 0/132 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 838 event pairs, 0 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2021-03-11 22:45:58,504 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2021-03-11 22:45:58,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 58 transitions, 1390 flow [2021-03-11 22:45:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,505 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,506 INFO L185 Difference]: Start difference. First operand has 164 places, 56 transitions, 1286 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 58 transitions, 1390 flow [2021-03-11 22:45:58,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 58 transitions, 1333 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:58,512 INFO L241 Difference]: Finished difference. Result has 163 places, 53 transitions, 1201 flow [2021-03-11 22:45:58,512 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1201, PETRI_PLACES=163, PETRI_TRANSITIONS=53} [2021-03-11 22:45:58,512 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2021-03-11 22:45:58,512 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 53 transitions, 1201 flow [2021-03-11 22:45:58,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,512 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,512 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 22:45:58,513 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,513 INFO L82 PathProgramCache]: Analyzing trace with hash 193086428, now seen corresponding path program 107 times [2021-03-11 22:45:58,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160937460] [2021-03-11 22:45:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,526 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 22:45:58,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 22:45:58,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:58,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:58,540 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:58,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:58,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160937460] [2021-03-11 22:45:58,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147425923] [2021-03-11 22:45:58,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,566 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 53 transitions, 1201 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,614 INFO L129 PetriNetUnfolder]: 0/123 cut-off events. [2021-03-11 22:45:58,614 INFO L130 PetriNetUnfolder]: For 1523/1523 co-relation queries the response was YES. [2021-03-11 22:45:58,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 123 events. 0/123 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 763 event pairs, 0 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-03-11 22:45:58,616 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 19 changer transitions 4/55 dead transitions. [2021-03-11 22:45:58,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 55 transitions, 1299 flow [2021-03-11 22:45:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,617 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,617 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,618 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,618 INFO L185 Difference]: Start difference. First operand has 163 places, 53 transitions, 1201 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 55 transitions, 1299 flow [2021-03-11 22:45:58,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 55 transitions, 1229 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:58,623 INFO L241 Difference]: Finished difference. Result has 161 places, 49 transitions, 1084 flow [2021-03-11 22:45:58,624 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=161, PETRI_TRANSITIONS=49} [2021-03-11 22:45:58,624 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2021-03-11 22:45:58,624 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 49 transitions, 1084 flow [2021-03-11 22:45:58,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,624 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 22:45:58,624 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1155567652, now seen corresponding path program 108 times [2021-03-11 22:45:58,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865411409] [2021-03-11 22:45:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:58,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:58,647 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:58,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:58,661 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865411409] [2021-03-11 22:45:58,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736512289] [2021-03-11 22:45:58,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,676 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 49 transitions, 1084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,724 INFO L129 PetriNetUnfolder]: 0/113 cut-off events. [2021-03-11 22:45:58,724 INFO L130 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2021-03-11 22:45:58,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 113 events. 0/113 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 678 event pairs, 0 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2021-03-11 22:45:58,724 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 23 selfloop transitions, 16 changer transitions 2/51 dead transitions. [2021-03-11 22:45:58,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 51 transitions, 1174 flow [2021-03-11 22:45:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,725 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,725 INFO L185 Difference]: Start difference. First operand has 161 places, 49 transitions, 1084 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 51 transitions, 1174 flow [2021-03-11 22:45:58,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 51 transitions, 1084 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-03-11 22:45:58,731 INFO L241 Difference]: Finished difference. Result has 154 places, 47 transitions, 973 flow [2021-03-11 22:45:58,731 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=154, PETRI_TRANSITIONS=47} [2021-03-11 22:45:58,731 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2021-03-11 22:45:58,731 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 47 transitions, 973 flow [2021-03-11 22:45:58,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,731 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,731 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 22:45:58,731 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash -444441500, now seen corresponding path program 109 times [2021-03-11 22:45:58,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175527023] [2021-03-11 22:45:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:58,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 22:45:58,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 22:45:58,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:58,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:58,765 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175527023] [2021-03-11 22:45:58,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345539649] [2021-03-11 22:45:58,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,777 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 47 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,804 INFO L129 PetriNetUnfolder]: 0/106 cut-off events. [2021-03-11 22:45:58,804 INFO L130 PetriNetUnfolder]: For 1219/1219 co-relation queries the response was YES. [2021-03-11 22:45:58,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 106 events. 0/106 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 616 event pairs, 0 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2021-03-11 22:45:58,804 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 18 selfloop transitions, 18 changer transitions 3/49 dead transitions. [2021-03-11 22:45:58,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 49 transitions, 1059 flow [2021-03-11 22:45:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-11 22:45:58,804 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 22:45:58,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-11 22:45:58,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-11 22:45:58,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-11 22:45:58,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,805 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,805 INFO L185 Difference]: Start difference. First operand has 154 places, 47 transitions, 973 flow. Second operand 7 states and 301 transitions. [2021-03-11 22:45:58,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 49 transitions, 1059 flow [2021-03-11 22:45:58,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 49 transitions, 1004 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:58,810 INFO L241 Difference]: Finished difference. Result has 152 places, 44 transitions, 895 flow [2021-03-11 22:45:58,810 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=152, PETRI_TRANSITIONS=44} [2021-03-11 22:45:58,810 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 120 predicate places. [2021-03-11 22:45:58,810 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 44 transitions, 895 flow [2021-03-11 22:45:58,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,810 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,810 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 22:45:58,810 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2010874306, now seen corresponding path program 110 times [2021-03-11 22:45:58,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289683141] [2021-03-11 22:45:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:58,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:58,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:58,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:58,844 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289683141] [2021-03-11 22:45:58,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132570849] [2021-03-11 22:45:58,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,857 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 44 transitions, 895 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,899 INFO L129 PetriNetUnfolder]: 0/97 cut-off events. [2021-03-11 22:45:58,900 INFO L130 PetriNetUnfolder]: For 1123/1123 co-relation queries the response was YES. [2021-03-11 22:45:58,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 97 events. 0/97 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 533 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2021-03-11 22:45:58,900 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 19 selfloop transitions, 13 changer transitions 4/46 dead transitions. [2021-03-11 22:45:58,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 46 transitions, 975 flow [2021-03-11 22:45:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-11 22:45:58,900 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 22:45:58,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-11 22:45:58,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-11 22:45:58,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-11 22:45:58,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,901 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,901 INFO L185 Difference]: Start difference. First operand has 152 places, 44 transitions, 895 flow. Second operand 7 states and 301 transitions. [2021-03-11 22:45:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 46 transitions, 975 flow [2021-03-11 22:45:58,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 46 transitions, 882 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-11 22:45:58,905 INFO L241 Difference]: Finished difference. Result has 139 places, 40 transitions, 751 flow [2021-03-11 22:45:58,905 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=139, PETRI_TRANSITIONS=40} [2021-03-11 22:45:58,905 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2021-03-11 22:45:58,905 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 40 transitions, 751 flow [2021-03-11 22:45:58,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,905 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:58,906 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:58,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 22:45:58,906 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash 766182094, now seen corresponding path program 111 times [2021-03-11 22:45:58,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:58,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020255436] [2021-03-11 22:45:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:58,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:58,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:58,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:58,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:58,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 22:45:58,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:45:58,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:58,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:58,947 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:58,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:58,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020255436] [2021-03-11 22:45:58,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:58,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:58,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298675965] [2021-03-11 22:45:58,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:58,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:58,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:58,959 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:58,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 40 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:58,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:58,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:58,997 INFO L129 PetriNetUnfolder]: 0/87 cut-off events. [2021-03-11 22:45:58,997 INFO L130 PetriNetUnfolder]: For 887/887 co-relation queries the response was YES. [2021-03-11 22:45:58,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 87 events. 0/87 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 0 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-03-11 22:45:58,998 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 15 selfloop transitions, 14 changer transitions 3/42 dead transitions. [2021-03-11 22:45:58,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 42 transitions, 823 flow [2021-03-11 22:45:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:58,998 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:58,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:58,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:58,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:58,999 INFO L185 Difference]: Start difference. First operand has 139 places, 40 transitions, 751 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 42 transitions, 823 flow [2021-03-11 22:45:59,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 42 transitions, 759 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-11 22:45:59,002 INFO L241 Difference]: Finished difference. Result has 132 places, 37 transitions, 652 flow [2021-03-11 22:45:59,002 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=652, PETRI_PLACES=132, PETRI_TRANSITIONS=37} [2021-03-11 22:45:59,002 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 100 predicate places. [2021-03-11 22:45:59,002 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 37 transitions, 652 flow [2021-03-11 22:45:59,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,003 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,003 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 22:45:59,003 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash 926857120, now seen corresponding path program 112 times [2021-03-11 22:45:59,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17597941] [2021-03-11 22:45:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,033 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,045 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17597941] [2021-03-11 22:45:59,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072638329] [2021-03-11 22:45:59,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,057 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 37 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,094 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2021-03-11 22:45:59,094 INFO L130 PetriNetUnfolder]: For 743/743 co-relation queries the response was YES. [2021-03-11 22:45:59,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 78 events. 0/78 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 378 event pairs, 0 based on Foata normal form. 1/79 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-11 22:45:59,094 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 16 selfloop transitions, 11 changer transitions 2/39 dead transitions. [2021-03-11 22:45:59,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 39 transitions, 718 flow [2021-03-11 22:45:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-11 22:45:59,095 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-11 22:45:59,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-11 22:45:59,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-11 22:45:59,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-11 22:45:59,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,095 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,095 INFO L185 Difference]: Start difference. First operand has 132 places, 37 transitions, 652 flow. Second operand 7 states and 302 transitions. [2021-03-11 22:45:59,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 39 transitions, 718 flow [2021-03-11 22:45:59,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 39 transitions, 672 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:59,098 INFO L241 Difference]: Finished difference. Result has 127 places, 35 transitions, 578 flow [2021-03-11 22:45:59,098 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=127, PETRI_TRANSITIONS=35} [2021-03-11 22:45:59,098 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 95 predicate places. [2021-03-11 22:45:59,098 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 35 transitions, 578 flow [2021-03-11 22:45:59,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,098 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,098 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 22:45:59,099 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1294677708, now seen corresponding path program 113 times [2021-03-11 22:45:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893773351] [2021-03-11 22:45:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,137 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893773351] [2021-03-11 22:45:59,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576197201] [2021-03-11 22:45:59,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,151 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 35 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,199 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-03-11 22:45:59,199 INFO L130 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2021-03-11 22:45:59,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 72 events. 0/72 cut-off events. For 619/619 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 324 event pairs, 0 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-11 22:45:59,199 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 10 changer transitions 3/37 dead transitions. [2021-03-11 22:45:59,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 37 transitions, 640 flow [2021-03-11 22:45:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-11 22:45:59,200 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 22:45:59,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-11 22:45:59,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-11 22:45:59,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-11 22:45:59,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,200 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,200 INFO L185 Difference]: Start difference. First operand has 127 places, 35 transitions, 578 flow. Second operand 7 states and 301 transitions. [2021-03-11 22:45:59,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 37 transitions, 640 flow [2021-03-11 22:45:59,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 37 transitions, 593 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-03-11 22:45:59,203 INFO L241 Difference]: Finished difference. Result has 124 places, 32 transitions, 489 flow [2021-03-11 22:45:59,203 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=124, PETRI_TRANSITIONS=32} [2021-03-11 22:45:59,203 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2021-03-11 22:45:59,203 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 32 transitions, 489 flow [2021-03-11 22:45:59,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,203 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,203 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 22:45:59,203 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1911201956, now seen corresponding path program 114 times [2021-03-11 22:45:59,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981876267] [2021-03-11 22:45:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,225 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 22:45:59,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 22:45:59,236 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981876267] [2021-03-11 22:45:59,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657533297] [2021-03-11 22:45:59,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,248 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 32 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,274 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-03-11 22:45:59,274 INFO L130 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2021-03-11 22:45:59,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 63 events. 0/63 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 0 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-11 22:45:59,274 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 10 selfloop transitions, 12 changer transitions 2/34 dead transitions. [2021-03-11 22:45:59,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 34 transitions, 545 flow [2021-03-11 22:45:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-11 22:45:59,275 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-11 22:45:59,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-11 22:45:59,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-11 22:45:59,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-11 22:45:59,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,275 INFO L185 Difference]: Start difference. First operand has 124 places, 32 transitions, 489 flow. Second operand 7 states and 301 transitions. [2021-03-11 22:45:59,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 34 transitions, 545 flow [2021-03-11 22:45:59,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 34 transitions, 477 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-11 22:45:59,277 INFO L241 Difference]: Finished difference. Result has 112 places, 30 transitions, 415 flow [2021-03-11 22:45:59,277 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=112, PETRI_TRANSITIONS=30} [2021-03-11 22:45:59,277 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 80 predicate places. [2021-03-11 22:45:59,278 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 30 transitions, 415 flow [2021-03-11 22:45:59,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,278 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,278 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 22:45:59,278 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,278 INFO L82 PathProgramCache]: Analyzing trace with hash -884389652, now seen corresponding path program 115 times [2021-03-11 22:45:59,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211172218] [2021-03-11 22:45:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:59,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,311 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211172218] [2021-03-11 22:45:59,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135889361] [2021-03-11 22:45:59,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,323 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 30 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,356 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-03-11 22:45:59,356 INFO L130 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2021-03-11 22:45:59,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 55 events. 0/55 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 205 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-11 22:45:59,356 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 10 selfloop transitions, 9 changer transitions 2/31 dead transitions. [2021-03-11 22:45:59,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 31 transitions, 461 flow [2021-03-11 22:45:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2021-03-11 22:45:59,357 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8086253369272237 [2021-03-11 22:45:59,357 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 300 transitions. [2021-03-11 22:45:59,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 300 transitions. [2021-03-11 22:45:59,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 300 transitions. [2021-03-11 22:45:59,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.857142857142854) internal successors, (300), 7 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,358 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,358 INFO L185 Difference]: Start difference. First operand has 112 places, 30 transitions, 415 flow. Second operand 7 states and 300 transitions. [2021-03-11 22:45:59,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 31 transitions, 461 flow [2021-03-11 22:45:59,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 31 transitions, 387 flow, removed 6 selfloop flow, removed 12 redundant places. [2021-03-11 22:45:59,359 INFO L241 Difference]: Finished difference. Result has 99 places, 28 transitions, 319 flow [2021-03-11 22:45:59,359 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=99, PETRI_TRANSITIONS=28} [2021-03-11 22:45:59,359 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2021-03-11 22:45:59,359 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 28 transitions, 319 flow [2021-03-11 22:45:59,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,360 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 22:45:59,360 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,360 INFO L82 PathProgramCache]: Analyzing trace with hash 182154622, now seen corresponding path program 116 times [2021-03-11 22:45:59,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137645882] [2021-03-11 22:45:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,392 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137645882] [2021-03-11 22:45:59,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703598913] [2021-03-11 22:45:59,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,416 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 28 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,448 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-11 22:45:59,448 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-03-11 22:45:59,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 48 events. 0/48 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 160 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-11 22:45:59,448 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 8 selfloop transitions, 7 changer transitions 4/29 dead transitions. [2021-03-11 22:45:59,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 29 transitions, 361 flow [2021-03-11 22:45:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2021-03-11 22:45:59,448 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8086253369272237 [2021-03-11 22:45:59,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 300 transitions. [2021-03-11 22:45:59,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 300 transitions. [2021-03-11 22:45:59,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 300 transitions. [2021-03-11 22:45:59,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.857142857142854) internal successors, (300), 7 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,449 INFO L185 Difference]: Start difference. First operand has 99 places, 28 transitions, 319 flow. Second operand 7 states and 300 transitions. [2021-03-11 22:45:59,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 29 transitions, 361 flow [2021-03-11 22:45:59,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 29 transitions, 334 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-03-11 22:45:59,450 INFO L241 Difference]: Finished difference. Result has 95 places, 24 transitions, 257 flow [2021-03-11 22:45:59,450 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=95, PETRI_TRANSITIONS=24} [2021-03-11 22:45:59,450 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2021-03-11 22:45:59,450 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 24 transitions, 257 flow [2021-03-11 22:45:59,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,450 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,451 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 22:45:59,451 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,451 INFO L82 PathProgramCache]: Analyzing trace with hash -146228260, now seen corresponding path program 117 times [2021-03-11 22:45:59,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596356866] [2021-03-11 22:45:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,490 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596356866] [2021-03-11 22:45:59,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793417835] [2021-03-11 22:45:59,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,502 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 24 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,533 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-11 22:45:59,533 INFO L130 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2021-03-11 22:45:59,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 38 events. 0/38 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-11 22:45:59,533 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 6 selfloop transitions, 6 changer transitions 3/25 dead transitions. [2021-03-11 22:45:59,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 25 transitions, 291 flow [2021-03-11 22:45:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2021-03-11 22:45:59,534 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8032345013477089 [2021-03-11 22:45:59,534 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 298 transitions. [2021-03-11 22:45:59,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 298 transitions. [2021-03-11 22:45:59,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 298 transitions. [2021-03-11 22:45:59,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,534 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,534 INFO L185 Difference]: Start difference. First operand has 95 places, 24 transitions, 257 flow. Second operand 7 states and 298 transitions. [2021-03-11 22:45:59,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 25 transitions, 291 flow [2021-03-11 22:45:59,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 25 transitions, 232 flow, removed 4 selfloop flow, removed 13 redundant places. [2021-03-11 22:45:59,535 INFO L241 Difference]: Finished difference. Result has 78 places, 21 transitions, 170 flow [2021-03-11 22:45:59,535 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=21} [2021-03-11 22:45:59,535 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2021-03-11 22:45:59,535 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 21 transitions, 170 flow [2021-03-11 22:45:59,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,536 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,536 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 22:45:59,536 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1182501710, now seen corresponding path program 118 times [2021-03-11 22:45:59,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631315954] [2021-03-11 22:45:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 22:45:59,557 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631315954] [2021-03-11 22:45:59,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169811779] [2021-03-11 22:45:59,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,591 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 21 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,625 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-11 22:45:59,625 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2021-03-11 22:45:59,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 30 events. 0/30 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-11 22:45:59,625 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 4 selfloop transitions, 5 changer transitions 3/22 dead transitions. [2021-03-11 22:45:59,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 22 transitions, 198 flow [2021-03-11 22:45:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2021-03-11 22:45:59,626 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8005390835579514 [2021-03-11 22:45:59,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 297 transitions. [2021-03-11 22:45:59,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 297 transitions. [2021-03-11 22:45:59,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 297 transitions. [2021-03-11 22:45:59,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,627 INFO L185 Difference]: Start difference. First operand has 78 places, 21 transitions, 170 flow. Second operand 7 states and 297 transitions. [2021-03-11 22:45:59,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 22 transitions, 198 flow [2021-03-11 22:45:59,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 22 transitions, 176 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:59,627 INFO L241 Difference]: Finished difference. Result has 73 places, 18 transitions, 118 flow [2021-03-11 22:45:59,627 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=73, PETRI_TRANSITIONS=18} [2021-03-11 22:45:59,627 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2021-03-11 22:45:59,627 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 18 transitions, 118 flow [2021-03-11 22:45:59,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,628 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 22:45:59,628 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash 605015344, now seen corresponding path program 119 times [2021-03-11 22:45:59,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555849815] [2021-03-11 22:45:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,663 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555849815] [2021-03-11 22:45:59,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531847082] [2021-03-11 22:45:59,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,678 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 18 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,710 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-11 22:45:59,710 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-11 22:45:59,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 22 events. 0/22 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 22:45:59,710 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 2 selfloop transitions, 4 changer transitions 2/18 dead transitions. [2021-03-11 22:45:59,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 18 transitions, 134 flow [2021-03-11 22:45:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 295 transitions. [2021-03-11 22:45:59,711 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7951482479784366 [2021-03-11 22:45:59,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 295 transitions. [2021-03-11 22:45:59,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 295 transitions. [2021-03-11 22:45:59,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 295 transitions. [2021-03-11 22:45:59,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,712 INFO L185 Difference]: Start difference. First operand has 73 places, 18 transitions, 118 flow. Second operand 7 states and 295 transitions. [2021-03-11 22:45:59,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 18 transitions, 134 flow [2021-03-11 22:45:59,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 18 transitions, 98 flow, removed 3 selfloop flow, removed 13 redundant places. [2021-03-11 22:45:59,712 INFO L241 Difference]: Finished difference. Result has 53 places, 16 transitions, 70 flow [2021-03-11 22:45:59,712 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=53, PETRI_TRANSITIONS=16} [2021-03-11 22:45:59,712 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2021-03-11 22:45:59,712 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 16 transitions, 70 flow [2021-03-11 22:45:59,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,713 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:45:59,713 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:45:59,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 22:45:59,713 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 22:45:59,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:45:59,713 INFO L82 PathProgramCache]: Analyzing trace with hash 598474238, now seen corresponding path program 120 times [2021-03-11 22:45:59,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:45:59,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582426158] [2021-03-11 22:45:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:45:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:45:59,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:45:59,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:45:59,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:45:59,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:45:59,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 22:45:59,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:45:59,735 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 22:45:59,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 22:45:59,749 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-11 22:45:59,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 22:45:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:45:59,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582426158] [2021-03-11 22:45:59,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:45:59,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 22:45:59,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483988492] [2021-03-11 22:45:59,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:45:59,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:45:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:45:59,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:45:59,763 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-11 22:45:59,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 16 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:45:59,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-11 22:45:59,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:45:59,788 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-11 22:45:59,789 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 22:45:59,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 15 events. 0/15 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:45:59,789 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2021-03-11 22:45:59,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 15 transitions, 76 flow [2021-03-11 22:45:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:45:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:45:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2021-03-11 22:45:59,789 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7897574123989218 [2021-03-11 22:45:59,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 293 transitions. [2021-03-11 22:45:59,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 293 transitions. [2021-03-11 22:45:59,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:45:59,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 293 transitions. [2021-03-11 22:45:59,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,790 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,790 INFO L185 Difference]: Start difference. First operand has 53 places, 16 transitions, 70 flow. Second operand 7 states and 293 transitions. [2021-03-11 22:45:59,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 15 transitions, 76 flow [2021-03-11 22:45:59,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 15 transitions, 62 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-03-11 22:45:59,790 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-03-11 22:45:59,790 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-03-11 22:45:59,790 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-11 22:45:59,790 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-03-11 22:45:59,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:45:59,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 22:45:59,793 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:45:59 BasicIcfg [2021-03-11 22:45:59,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:45:59,793 INFO L168 Benchmark]: Toolchain (without parser) took 19067.61 ms. Allocated memory was 337.6 MB in the beginning and 587.2 MB in the end (delta: 249.6 MB). Free memory was 318.2 MB in the beginning and 243.4 MB in the end (delta: 74.7 MB). Peak memory consumption was 326.7 MB. Max. memory is 16.0 GB. [2021-03-11 22:45:59,793 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 337.6 MB. Free memory was 319.2 MB in the beginning and 319.1 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:45:59,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.12 ms. Allocated memory is still 337.6 MB. Free memory was 317.7 MB in the beginning and 316.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:45:59,794 INFO L168 Benchmark]: Boogie Preprocessor took 8.69 ms. Allocated memory is still 337.6 MB. Free memory was 316.2 MB in the beginning and 315.3 MB in the end (delta: 846.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:45:59,794 INFO L168 Benchmark]: RCFGBuilder took 131.74 ms. Allocated memory is still 337.6 MB. Free memory was 315.2 MB in the beginning and 305.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 22:45:59,794 INFO L168 Benchmark]: TraceAbstraction took 18904.08 ms. Allocated memory was 337.6 MB in the beginning and 587.2 MB in the end (delta: 249.6 MB). Free memory was 304.8 MB in the beginning and 243.4 MB in the end (delta: 61.4 MB). Peak memory consumption was 314.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:45:59,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 337.6 MB. Free memory was 319.2 MB in the beginning and 319.1 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.12 ms. Allocated memory is still 337.6 MB. Free memory was 317.7 MB in the beginning and 316.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.69 ms. Allocated memory is still 337.6 MB. Free memory was 316.2 MB in the beginning and 315.3 MB in the end (delta: 846.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 131.74 ms. Allocated memory is still 337.6 MB. Free memory was 315.2 MB in the beginning and 305.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 18904.08 ms. Allocated memory was 337.6 MB in the beginning and 587.2 MB in the end (delta: 249.6 MB). Free memory was 304.8 MB in the beginning and 243.4 MB in the end (delta: 61.4 MB). Peak memory consumption was 314.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 65.5ms, 37 PlacesBefore, 32 PlacesAfterwards, 41 TransitionsBefore, 36 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1330 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1330, positive: 1330, positive conditional: 0, positive unconditional: 1330, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 260, positive: 260, positive conditional: 0, positive unconditional: 260, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 260, positive: 260, positive conditional: 0, positive unconditional: 260, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1330, positive: 1070, positive conditional: 0, positive unconditional: 1070, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 260, unknown conditional: 0, unknown unconditional: 260] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 18835.1ms, OverallIterations: 124, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 11294.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 119.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1423 SDtfs, 2055 SDslu, 1146 SDs, 0 SdLazy, 2589 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1342.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 7211.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4842occurred in iteration=65, InterpolantAutomatonStates: 852, 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: 38.6ms SsaConstructionTime, 113.8ms SatisfiabilityAnalysisTime, 6851.8ms InterpolantComputationTime, 1984 NumberOfCodeBlocks, 1984 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1860 ConstructedInterpolants, 0 QuantifiedInterpolants, 34750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 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 proved your program to be correct! Received shutdown request...