/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:57:29,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:57:29,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:57:29,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 17:57:29,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:57:29,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:57:29,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:57:29,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 17:57:29,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:57:29,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:57:29,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:57:29,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:57:29,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:57:29,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:57:29,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:57:29,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:57:29,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:57:29,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:57:29,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:57:29,883 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:57:29,883 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:57:29,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:57:29,883 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:57:30,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:57:30,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:57:30,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:57:30,230 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:57:30,233 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:57:30,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-08-13 17:57:30,234 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-08-13 17:57:30,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:57:30,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:57:30,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:30,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:57:30,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:57:30,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:30,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:57:30,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:57:30,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:57:30,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/1) ... [2021-08-13 17:57:30,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:57:30,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:57:30,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:57:30,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:57:30,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (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 [2021-08-13 17:57:30,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 17:57:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 17:57:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 17:57:30,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 17:57:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 17:57:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 17:57:30,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 17:57:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 17:57:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 17:57:30,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 17:57:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 17:57:30,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 17:57:30,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 17:57:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 17:57:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 17:57:30,384 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:57:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:57:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:57:30,385 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-13 17:57:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-13 17:57:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-13 17:57:30,386 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-08-13 17:57:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-08-13 17:57:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-08-13 17:57:30,388 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 17:57:30,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:57:30,505 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:57:30,506 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:30 BoogieIcfgContainer [2021-08-13 17:57:30,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:57:30,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:57:30,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:57:30,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:57:30,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:30" (1/2) ... [2021-08-13 17:57:30,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aa9a03 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:57:30, skipping insertion in model container [2021-08-13 17:57:30,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:30" (2/2) ... [2021-08-13 17:57:30,510 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-08-13 17:57:30,514 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:57:30,514 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:57:30,514 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:57:30,591 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-08-13 17:57:30,607 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-13 17:57:30,621 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:57:30,621 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:57:30,621 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:57:30,621 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:57:30,621 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:57:30,621 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:57:30,622 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:57:30,622 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:57:30,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-08-13 17:57:30,780 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-08-13 17:57:30,780 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-08-13 17:57:30,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-08-13 17:57:30,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-08-13 17:57:30,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-08-13 17:57:30,893 INFO L129 PetriNetUnfolder]: 321/469 cut-off events. [2021-08-13 17:57:30,893 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-08-13 17:57:30,893 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,894 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:30,894 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2083937691, now seen corresponding path program 1 times [2021-08-13 17:57:30,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278374661] [2021-08-13 17:57:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:31,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278374661] [2021-08-13 17:57:31,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278374661] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:31,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126962948] [2021-08-13 17:57:31,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:31,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:31,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:31,100 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 17:57:31,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 71 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 17:57:31,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,152 INFO L129 PetriNetUnfolder]: 135/227 cut-off events. [2021-08-13 17:57:31,152 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-08-13 17:57:31,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 227 events. 135/227 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 767 event pairs, 0 based on Foata normal form. 57/284 useless extension candidates. Maximal degree in co-relation 401. Up to 60 conditions per place. [2021-08-13 17:57:31,155 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 2 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2021-08-13 17:57:31,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 291 flow [2021-08-13 17:57:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 17:57:31,166 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 17:57:31,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,180 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2021-08-13 17:57:31,180 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 291 flow [2021-08-13 17:57:31,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,181 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:31,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:57:31,181 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1355406023, now seen corresponding path program 1 times [2021-08-13 17:57:31,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619203798] [2021-08-13 17:57:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:31,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619203798] [2021-08-13 17:57:31,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619203798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:31,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447197860] [2021-08-13 17:57:31,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:31,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:31,243 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 17:57:31,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 17:57:31,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,283 INFO L129 PetriNetUnfolder]: 130/221 cut-off events. [2021-08-13 17:57:31,283 INFO L130 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2021-08-13 17:57:31,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 221 events. 130/221 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 776 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 420. Up to 60 conditions per place. [2021-08-13 17:57:31,285 INFO L132 encePairwiseOnDemand]: 78/80 looper letters, 6 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-08-13 17:57:31,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 300 flow [2021-08-13 17:57:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 17:57:31,290 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 17:57:31,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,293 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2021-08-13 17:57:31,293 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 300 flow [2021-08-13 17:57:31,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,293 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,293 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:31,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:57:31,294 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash 2095702071, now seen corresponding path program 1 times [2021-08-13 17:57:31,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392531494] [2021-08-13 17:57:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:31,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392531494] [2021-08-13 17:57:31,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392531494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:31,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917724947] [2021-08-13 17:57:31,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:31,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:31,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:31,341 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 17:57:31,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 17:57:31,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,374 INFO L129 PetriNetUnfolder]: 106/191 cut-off events. [2021-08-13 17:57:31,374 INFO L130 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2021-08-13 17:57:31,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 191 events. 106/191 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 564 event pairs, 0 based on Foata normal form. 5/196 useless extension candidates. Maximal degree in co-relation 381. Up to 60 conditions per place. [2021-08-13 17:57:31,377 INFO L132 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2021-08-13 17:57:31,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 302 flow [2021-08-13 17:57:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 17:57:31,381 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 17:57:31,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,385 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2021-08-13 17:57:31,385 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 302 flow [2021-08-13 17:57:31,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,385 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,385 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:31,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:57:31,386 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1070603885, now seen corresponding path program 1 times [2021-08-13 17:57:31,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396330311] [2021-08-13 17:57:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:31,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396330311] [2021-08-13 17:57:31,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396330311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:31,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315010174] [2021-08-13 17:57:31,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:31,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:31,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:31,430 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 17:57:31,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 17:57:31,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,444 INFO L129 PetriNetUnfolder]: 30/79 cut-off events. [2021-08-13 17:57:31,444 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2021-08-13 17:57:31,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 79 events. 30/79 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 181 event pairs, 0 based on Foata normal form. 26/105 useless extension candidates. Maximal degree in co-relation 150. Up to 20 conditions per place. [2021-08-13 17:57:31,445 INFO L132 encePairwiseOnDemand]: 73/80 looper letters, 1 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2021-08-13 17:57:31,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 211 flow [2021-08-13 17:57:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 17:57:31,447 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 17:57:31,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 17:57:31,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,450 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2021-08-13 17:57:31,450 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 211 flow [2021-08-13 17:57:31,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,450 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,450 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:31,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:57:31,451 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,451 INFO L82 PathProgramCache]: Analyzing trace with hash -706613177, now seen corresponding path program 1 times [2021-08-13 17:57:31,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491930743] [2021-08-13 17:57:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:31,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:31,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:31,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:31,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:31,637 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:31,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:31,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:31,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:31,706 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:31,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:31,748 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:31,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491930743] [2021-08-13 17:57:31,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491930743] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:31,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074393262] [2021-08-13 17:57:31,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:31,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:31,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:31,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:31,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 211 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:31,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,039 INFO L129 PetriNetUnfolder]: 1143/2290 cut-off events. [2021-08-13 17:57:32,039 INFO L130 PetriNetUnfolder]: For 2718/2718 co-relation queries the response was YES. [2021-08-13 17:57:32,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5023 conditions, 2290 events. 1143/2290 cut-off events. For 2718/2718 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 17866 event pairs, 129 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 4952. Up to 503 conditions per place. [2021-08-13 17:57:32,061 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 27 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2021-08-13 17:57:32,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 331 flow [2021-08-13 17:57:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:32,064 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:32,064 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:32,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:32,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:32,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,068 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,068 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2021-08-13 17:57:32,068 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 331 flow [2021-08-13 17:57:32,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,069 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,069 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:57:32,070 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1019041477, now seen corresponding path program 1 times [2021-08-13 17:57:32,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959052369] [2021-08-13 17:57:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:32,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:32,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959052369] [2021-08-13 17:57:32,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959052369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:32,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631806795] [2021-08-13 17:57:32,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:32,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:32,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:32,111 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 17:57:32,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 17:57:32,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,302 INFO L129 PetriNetUnfolder]: 623/1462 cut-off events. [2021-08-13 17:57:32,303 INFO L130 PetriNetUnfolder]: For 1995/1995 co-relation queries the response was YES. [2021-08-13 17:57:32,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1462 events. 623/1462 cut-off events. For 1995/1995 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11364 event pairs, 129 based on Foata normal form. 169/1569 useless extension candidates. Maximal degree in co-relation 3084. Up to 225 conditions per place. [2021-08-13 17:57:32,314 INFO L132 encePairwiseOnDemand]: 76/80 looper letters, 2 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2021-08-13 17:57:32,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 322 flow [2021-08-13 17:57:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-08-13 17:57:32,315 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.925 [2021-08-13 17:57:32,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-08-13 17:57:32,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-08-13 17:57:32,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-08-13 17:57:32,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,317 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2021-08-13 17:57:32,317 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 322 flow [2021-08-13 17:57:32,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,317 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,317 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 17:57:32,317 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash 148095015, now seen corresponding path program 1 times [2021-08-13 17:57:32,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009920056] [2021-08-13 17:57:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:32,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:32,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009920056] [2021-08-13 17:57:32,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009920056] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:32,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446810457] [2021-08-13 17:57:32,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:32,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:32,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:32,350 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 17:57:32,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 17:57:32,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,417 INFO L129 PetriNetUnfolder]: 387/918 cut-off events. [2021-08-13 17:57:32,417 INFO L130 PetriNetUnfolder]: For 785/785 co-relation queries the response was YES. [2021-08-13 17:57:32,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 918 events. 387/918 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6428 event pairs, 129 based on Foata normal form. 130/998 useless extension candidates. Maximal degree in co-relation 1715. Up to 225 conditions per place. [2021-08-13 17:57:32,425 INFO L132 encePairwiseOnDemand]: 75/80 looper letters, 1 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2021-08-13 17:57:32,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 244 flow [2021-08-13 17:57:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-08-13 17:57:32,426 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.925 [2021-08-13 17:57:32,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-08-13 17:57:32,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-08-13 17:57:32,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-08-13 17:57:32,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,428 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2021-08-13 17:57:32,428 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 244 flow [2021-08-13 17:57:32,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,428 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,428 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 17:57:32,428 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,429 INFO L82 PathProgramCache]: Analyzing trace with hash -128851093, now seen corresponding path program 2 times [2021-08-13 17:57:32,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558645271] [2021-08-13 17:57:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:32,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:32,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:32,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:32,554 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:32,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:32,576 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:32,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:32,604 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:32,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:32,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558645271] [2021-08-13 17:57:32,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558645271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:32,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312950264] [2021-08-13 17:57:32,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:32,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:32,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:32,628 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:32,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 244 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:32,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,824 INFO L129 PetriNetUnfolder]: 458/1340 cut-off events. [2021-08-13 17:57:32,824 INFO L130 PetriNetUnfolder]: For 822/1654 co-relation queries the response was YES. [2021-08-13 17:57:32,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 1340 events. 458/1340 cut-off events. For 822/1654 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10816 event pairs, 49 based on Foata normal form. 1/1290 useless extension candidates. Maximal degree in co-relation 3254. Up to 302 conditions per place. [2021-08-13 17:57:32,831 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 85 selfloop transitions, 19 changer transitions 3/128 dead transitions. [2021-08-13 17:57:32,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 750 flow [2021-08-13 17:57:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:32,833 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:32,833 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:32,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:32,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:32,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,836 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2021-08-13 17:57:32,836 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 128 transitions, 750 flow [2021-08-13 17:57:32,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,836 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,836 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 17:57:32,837 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,837 INFO L82 PathProgramCache]: Analyzing trace with hash -356317913, now seen corresponding path program 3 times [2021-08-13 17:57:32,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589998187] [2021-08-13 17:57:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:32,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:32,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:32,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:32,899 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:32,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:32,919 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:32,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:32,944 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:32,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589998187] [2021-08-13 17:57:32,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589998187] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:32,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453462740] [2021-08-13 17:57:32,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:32,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:32,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:32,968 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:32,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 128 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:32,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:33,168 INFO L129 PetriNetUnfolder]: 546/1888 cut-off events. [2021-08-13 17:57:33,168 INFO L130 PetriNetUnfolder]: For 1579/4391 co-relation queries the response was YES. [2021-08-13 17:57:33,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1888 events. 546/1888 cut-off events. For 1579/4391 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17890 event pairs, 17 based on Foata normal form. 3/1835 useless extension candidates. Maximal degree in co-relation 5459. Up to 423 conditions per place. [2021-08-13 17:57:33,182 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 207 selfloop transitions, 52 changer transitions 5/285 dead transitions. [2021-08-13 17:57:33,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 285 transitions, 2220 flow [2021-08-13 17:57:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:33,183 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:33,184 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:33,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:33,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:33,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:33,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,186 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,186 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2021-08-13 17:57:33,187 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 285 transitions, 2220 flow [2021-08-13 17:57:33,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,187 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:33,187 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:33,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 17:57:33,187 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1942707917, now seen corresponding path program 4 times [2021-08-13 17:57:33,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:33,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521597306] [2021-08-13 17:57:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:33,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:33,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:33,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:33,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:33,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:33,239 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:33,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:33,254 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:33,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:33,274 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:33,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:33,299 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:33,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:33,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:33,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521597306] [2021-08-13 17:57:33,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521597306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:33,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:33,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:33,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121872180] [2021-08-13 17:57:33,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:33,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:33,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:33,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:33,324 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:33,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 285 transitions, 2220 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:33,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:33,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:33,656 INFO L129 PetriNetUnfolder]: 649/2670 cut-off events. [2021-08-13 17:57:33,656 INFO L130 PetriNetUnfolder]: For 2939/8123 co-relation queries the response was YES. [2021-08-13 17:57:33,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 2670 events. 649/2670 cut-off events. For 2939/8123 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 29045 event pairs, 5 based on Foata normal form. 13/2619 useless extension candidates. Maximal degree in co-relation 8750. Up to 586 conditions per place. [2021-08-13 17:57:33,676 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 442 selfloop transitions, 155 changer transitions 8/626 dead transitions. [2021-08-13 17:57:33,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 626 transitions, 6158 flow [2021-08-13 17:57:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:33,678 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:33,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:33,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:33,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:33,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:33,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,681 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,681 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 44 predicate places. [2021-08-13 17:57:33,681 INFO L482 AbstractCegarLoop]: Abstraction has has 95 places, 626 transitions, 6158 flow [2021-08-13 17:57:33,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,682 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:33,682 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:33,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 17:57:33,682 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:33,682 INFO L82 PathProgramCache]: Analyzing trace with hash 481951475, now seen corresponding path program 5 times [2021-08-13 17:57:33,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:33,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542778660] [2021-08-13 17:57:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:33,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:33,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:33,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:33,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:33,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:33,733 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:33,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:33,749 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:33,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:33,771 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:33,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:33,853 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:33,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:33,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:33,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542778660] [2021-08-13 17:57:33,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542778660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:33,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:33,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:33,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824365125] [2021-08-13 17:57:33,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:33,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:33,881 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:33,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 626 transitions, 6158 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:33,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:33,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:34,484 INFO L129 PetriNetUnfolder]: 778/3484 cut-off events. [2021-08-13 17:57:34,484 INFO L130 PetriNetUnfolder]: For 5223/21599 co-relation queries the response was YES. [2021-08-13 17:57:34,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13865 conditions, 3484 events. 778/3484 cut-off events. For 5223/21599 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 41296 event pairs, 1 based on Foata normal form. 56/3445 useless extension candidates. Maximal degree in co-relation 12859. Up to 789 conditions per place. [2021-08-13 17:57:34,513 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 840 selfloop transitions, 235 changer transitions 10/1106 dead transitions. [2021-08-13 17:57:34,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 1106 transitions, 13128 flow [2021-08-13 17:57:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:34,515 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:34,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:34,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:34,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:34,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:34,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,518 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,518 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2021-08-13 17:57:34,518 INFO L482 AbstractCegarLoop]: Abstraction has has 103 places, 1106 transitions, 13128 flow [2021-08-13 17:57:34,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,518 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:34,518 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:34,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:57:34,518 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:34,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:34,519 INFO L82 PathProgramCache]: Analyzing trace with hash -756318963, now seen corresponding path program 6 times [2021-08-13 17:57:34,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:34,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763816147] [2021-08-13 17:57:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:34,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:34,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:34,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:34,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:34,574 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:34,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:34,584 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:34,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:34,598 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:34,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:34,618 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:34,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:34,651 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:34,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:34,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:34,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763816147] [2021-08-13 17:57:34,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763816147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:34,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:34,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:34,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134871523] [2021-08-13 17:57:34,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:34,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:34,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:34,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:34,674 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:34,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 1106 transitions, 13128 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:34,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:34,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:35,729 INFO L129 PetriNetUnfolder]: 824/3711 cut-off events. [2021-08-13 17:57:35,729 INFO L130 PetriNetUnfolder]: For 6608/28239 co-relation queries the response was YES. [2021-08-13 17:57:35,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 3711 events. 824/3711 cut-off events. For 6608/28239 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 44633 event pairs, 0 based on Foata normal form. 148/3779 useless extension candidates. Maximal degree in co-relation 15375. Up to 888 conditions per place. [2021-08-13 17:57:35,754 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1223 selfloop transitions, 348 changer transitions 12/1604 dead transitions. [2021-08-13 17:57:35,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 1604 transitions, 22270 flow [2021-08-13 17:57:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:35,756 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:35,756 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:35,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:35,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:35,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:35,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,759 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,759 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2021-08-13 17:57:35,759 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 1604 transitions, 22270 flow [2021-08-13 17:57:35,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,760 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:35,760 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:35,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:57:35,760 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:35,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1004427847, now seen corresponding path program 7 times [2021-08-13 17:57:35,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:35,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125322862] [2021-08-13 17:57:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:35,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:35,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:35,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:35,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:35,793 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:35,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:35,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:35,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:35,820 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:35,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:35,839 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:35,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:35,866 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:35,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:35,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:35,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125322862] [2021-08-13 17:57:35,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125322862] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:35,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:35,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:35,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788545991] [2021-08-13 17:57:35,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:35,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:35,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:35,898 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:35,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 1604 transitions, 22270 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:35,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:35,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:37,598 INFO L129 PetriNetUnfolder]: 839/3852 cut-off events. [2021-08-13 17:57:37,598 INFO L130 PetriNetUnfolder]: For 8867/41767 co-relation queries the response was YES. [2021-08-13 17:57:37,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19015 conditions, 3852 events. 839/3852 cut-off events. For 8867/41767 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 46971 event pairs, 0 based on Foata normal form. 225/3999 useless extension candidates. Maximal degree in co-relation 17626. Up to 945 conditions per place. [2021-08-13 17:57:37,628 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1460 selfloop transitions, 390 changer transitions 14/1885 dead transitions. [2021-08-13 17:57:37,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 1885 transitions, 29932 flow [2021-08-13 17:57:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:37,630 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:37,630 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:37,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:37,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:37,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:37,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,633 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,633 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2021-08-13 17:57:37,633 INFO L482 AbstractCegarLoop]: Abstraction has has 119 places, 1885 transitions, 29932 flow [2021-08-13 17:57:37,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,633 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:37,633 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:37,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 17:57:37,634 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash -31496413, now seen corresponding path program 8 times [2021-08-13 17:57:37,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:37,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996947060] [2021-08-13 17:57:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:37,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:37,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:37,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:37,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:37,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:37,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:37,684 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:37,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:37,701 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:37,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:37,725 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:37,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:37,752 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:37,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:37,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:37,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996947060] [2021-08-13 17:57:37,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996947060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:37,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:37,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:37,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800930269] [2021-08-13 17:57:37,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:37,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:37,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:37,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:37,778 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:37,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 1885 transitions, 29932 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:37,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:37,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:40,086 INFO L129 PetriNetUnfolder]: 837/3837 cut-off events. [2021-08-13 17:57:40,087 INFO L130 PetriNetUnfolder]: For 13015/84029 co-relation queries the response was YES. [2021-08-13 17:57:40,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20841 conditions, 3837 events. 837/3837 cut-off events. For 13015/84029 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 46686 event pairs, 0 based on Foata normal form. 581/4345 useless extension candidates. Maximal degree in co-relation 19316. Up to 947 conditions per place. [2021-08-13 17:57:40,114 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1461 selfloop transitions, 388 changer transitions 17/1887 dead transitions. [2021-08-13 17:57:40,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 1887 transitions, 33696 flow [2021-08-13 17:57:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:40,116 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:40,116 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:40,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:40,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:40,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:40,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,119 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2021-08-13 17:57:40,119 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 1887 transitions, 33696 flow [2021-08-13 17:57:40,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,119 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:40,119 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:40,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 17:57:40,119 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash -840438793, now seen corresponding path program 9 times [2021-08-13 17:57:40,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:40,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259698205] [2021-08-13 17:57:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:40,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:40,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:40,230 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:40,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:40,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:40,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:40,249 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:40,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:40,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:40,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:40,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:40,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:40,325 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:40,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:40,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:40,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259698205] [2021-08-13 17:57:40,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259698205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:40,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:40,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:40,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112721522] [2021-08-13 17:57:40,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:40,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:40,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:40,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:40,369 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:40,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 1887 transitions, 33696 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:40,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:40,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:42,650 INFO L129 PetriNetUnfolder]: 828/4021 cut-off events. [2021-08-13 17:57:42,651 INFO L130 PetriNetUnfolder]: For 15864/69016 co-relation queries the response was YES. [2021-08-13 17:57:42,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23537 conditions, 4021 events. 828/4021 cut-off events. For 15864/69016 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 50103 event pairs, 0 based on Foata normal form. 362/4292 useless extension candidates. Maximal degree in co-relation 21666. Up to 999 conditions per place. [2021-08-13 17:57:42,681 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1509 selfloop transitions, 390 changer transitions 19/1939 dead transitions. [2021-08-13 17:57:42,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 1939 transitions, 38468 flow [2021-08-13 17:57:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:42,683 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:42,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:42,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:42,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:42,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:42,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,686 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2021-08-13 17:57:42,686 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 1939 transitions, 38468 flow [2021-08-13 17:57:42,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,686 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:42,686 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:42,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 17:57:42,686 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:42,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:42,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1057762089, now seen corresponding path program 10 times [2021-08-13 17:57:42,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:42,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324866949] [2021-08-13 17:57:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:42,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:42,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:42,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:42,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:42,717 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:42,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:42,727 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:42,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:42,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:42,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:42,759 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:42,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:42,781 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:42,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:42,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:42,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324866949] [2021-08-13 17:57:42,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324866949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:42,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:42,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:42,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195240278] [2021-08-13 17:57:42,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:42,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:42,816 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:42,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 1939 transitions, 38468 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:42,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:42,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:45,185 INFO L129 PetriNetUnfolder]: 825/4129 cut-off events. [2021-08-13 17:57:45,185 INFO L130 PetriNetUnfolder]: For 26826/127356 co-relation queries the response was YES. [2021-08-13 17:57:45,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25795 conditions, 4129 events. 825/4129 cut-off events. For 26826/127356 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52023 event pairs, 0 based on Foata normal form. 581/4620 useless extension candidates. Maximal degree in co-relation 23754. Up to 1002 conditions per place. [2021-08-13 17:57:45,226 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1510 selfloop transitions, 389 changer transitions 22/1942 dead transitions. [2021-08-13 17:57:45,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 1942 transitions, 42370 flow [2021-08-13 17:57:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:45,228 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:45,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:45,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:45,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:45,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:45,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,231 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,231 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2021-08-13 17:57:45,231 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 1942 transitions, 42370 flow [2021-08-13 17:57:45,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,232 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:45,232 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:45,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 17:57:45,232 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:45,232 INFO L82 PathProgramCache]: Analyzing trace with hash -489135357, now seen corresponding path program 11 times [2021-08-13 17:57:45,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:45,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399970439] [2021-08-13 17:57:45,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:45,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:45,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:45,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:45,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:45,267 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:45,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:45,278 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:45,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:45,293 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:45,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:45,311 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:45,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:45,335 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:45,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:45,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:45,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399970439] [2021-08-13 17:57:45,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399970439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:45,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:45,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:45,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639432087] [2021-08-13 17:57:45,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:45,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:45,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:45,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:45,363 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:45,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 1942 transitions, 42370 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:45,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:45,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:47,683 INFO L129 PetriNetUnfolder]: 818/4073 cut-off events. [2021-08-13 17:57:47,684 INFO L130 PetriNetUnfolder]: For 32377/128586 co-relation queries the response was YES. [2021-08-13 17:57:47,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27649 conditions, 4073 events. 818/4073 cut-off events. For 32377/128586 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 51165 event pairs, 0 based on Foata normal form. 514/4489 useless extension candidates. Maximal degree in co-relation 25359. Up to 1016 conditions per place. [2021-08-13 17:57:47,717 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1505 selfloop transitions, 406 changer transitions 24/1956 dead transitions. [2021-08-13 17:57:47,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 1956 transitions, 46548 flow [2021-08-13 17:57:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:47,719 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:47,719 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:47,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:47,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:47,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:47,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,721 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,721 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2021-08-13 17:57:47,721 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 1956 transitions, 46548 flow [2021-08-13 17:57:47,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,721 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:47,721 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:47,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 17:57:47,722 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:47,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:47,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1259879727, now seen corresponding path program 12 times [2021-08-13 17:57:47,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:47,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104654760] [2021-08-13 17:57:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:47,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:47,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:47,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:47,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:47,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:47,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:47,764 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:47,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:47,779 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:47,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:47,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:47,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:47,823 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:47,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:47,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:47,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104654760] [2021-08-13 17:57:47,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104654760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:47,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:47,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:47,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913916008] [2021-08-13 17:57:47,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:47,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:47,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:47,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:47,846 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:47,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 1956 transitions, 46548 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:47,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:47,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:50,266 INFO L129 PetriNetUnfolder]: 818/4067 cut-off events. [2021-08-13 17:57:50,266 INFO L130 PetriNetUnfolder]: For 41454/149589 co-relation queries the response was YES. [2021-08-13 17:57:50,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29557 conditions, 4067 events. 818/4067 cut-off events. For 41454/149589 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 51074 event pairs, 0 based on Foata normal form. 514/4483 useless extension candidates. Maximal degree in co-relation 27132. Up to 1015 conditions per place. [2021-08-13 17:57:50,297 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1514 selfloop transitions, 394 changer transitions 26/1955 dead transitions. [2021-08-13 17:57:50,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1955 transitions, 50392 flow [2021-08-13 17:57:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:50,299 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:50,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:50,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:50,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:50,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:50,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,301 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,302 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2021-08-13 17:57:50,302 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 1955 transitions, 50392 flow [2021-08-13 17:57:50,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,302 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:50,302 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:50,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 17:57:50,302 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:50,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash 534815667, now seen corresponding path program 13 times [2021-08-13 17:57:50,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:50,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644580748] [2021-08-13 17:57:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:50,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:50,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:50,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:50,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:50,331 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:50,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:50,341 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:50,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:50,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:50,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:50,373 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:50,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:50,397 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:50,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:50,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:50,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644580748] [2021-08-13 17:57:50,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644580748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:50,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:50,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:50,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953371254] [2021-08-13 17:57:50,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:50,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:50,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:50,420 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:50,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 1955 transitions, 50392 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:50,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:50,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:52,876 INFO L129 PetriNetUnfolder]: 816/4078 cut-off events. [2021-08-13 17:57:52,876 INFO L130 PetriNetUnfolder]: For 67479/258878 co-relation queries the response was YES. [2021-08-13 17:57:52,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 4078 events. 816/4078 cut-off events. For 67479/258878 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 51384 event pairs, 0 based on Foata normal form. 674/4655 useless extension candidates. Maximal degree in co-relation 28947. Up to 1017 conditions per place. [2021-08-13 17:57:52,908 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1503 selfloop transitions, 404 changer transitions 29/1957 dead transitions. [2021-08-13 17:57:52,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1957 transitions, 54316 flow [2021-08-13 17:57:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:52,910 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:52,910 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:52,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:52,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:52,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:52,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,912 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,912 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 116 predicate places. [2021-08-13 17:57:52,912 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 1957 transitions, 54316 flow [2021-08-13 17:57:52,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,912 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:52,912 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:52,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 17:57:52,913 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash 814454623, now seen corresponding path program 14 times [2021-08-13 17:57:52,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:52,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200392013] [2021-08-13 17:57:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:52,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:52,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:52,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:52,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:52,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:52,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:52,949 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:52,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:52,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:52,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:52,981 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:52,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:53,005 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:53,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:53,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:53,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200392013] [2021-08-13 17:57:53,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200392013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:53,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:53,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:53,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764477888] [2021-08-13 17:57:53,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:53,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:53,028 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:53,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 1957 transitions, 54316 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:53,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:53,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:53,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:55,618 INFO L129 PetriNetUnfolder]: 810/4216 cut-off events. [2021-08-13 17:57:55,618 INFO L130 PetriNetUnfolder]: For 52580/146812 co-relation queries the response was YES. [2021-08-13 17:57:55,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34021 conditions, 4216 events. 810/4216 cut-off events. For 52580/146812 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 53929 event pairs, 0 based on Foata normal form. 362/4477 useless extension candidates. Maximal degree in co-relation 31170. Up to 1030 conditions per place. [2021-08-13 17:57:55,651 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1509 selfloop transitions, 409 changer transitions 31/1970 dead transitions. [2021-08-13 17:57:55,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1970 transitions, 58578 flow [2021-08-13 17:57:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:55,652 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:55,652 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:55,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:55,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:55,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:55,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:55,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:55,654 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:55,654 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 124 predicate places. [2021-08-13 17:57:55,654 INFO L482 AbstractCegarLoop]: Abstraction has has 175 places, 1970 transitions, 58578 flow [2021-08-13 17:57:55,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:55,654 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:55,654 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:55,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 17:57:55,655 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:55,655 INFO L82 PathProgramCache]: Analyzing trace with hash -814560853, now seen corresponding path program 15 times [2021-08-13 17:57:55,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:55,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54213388] [2021-08-13 17:57:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:55,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:55,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:55,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:55,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:55,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:55,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:55,693 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:55,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:55,706 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 17:57:55,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 17:57:55,735 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:57:55,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:57:55,759 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:55,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:55,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:55,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54213388] [2021-08-13 17:57:55,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54213388] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:55,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:55,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:55,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286263968] [2021-08-13 17:57:55,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:55,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:55,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:55,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:55,781 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:55,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 1970 transitions, 58578 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:55,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:55,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:55,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:58,506 INFO L129 PetriNetUnfolder]: 804/4176 cut-off events. [2021-08-13 17:57:58,506 INFO L130 PetriNetUnfolder]: For 69182/189734 co-relation queries the response was YES. [2021-08-13 17:57:58,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35993 conditions, 4176 events. 804/4176 cut-off events. For 69182/189734 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 53356 event pairs, 0 based on Foata normal form. 403/4469 useless extension candidates. Maximal degree in co-relation 32871. Up to 1043 conditions per place. [2021-08-13 17:57:58,539 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1532 selfloop transitions, 397 changer transitions 33/1983 dead transitions. [2021-08-13 17:57:58,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1983 transitions, 62892 flow [2021-08-13 17:57:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:57:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:57:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:57:58,540 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:57:58,540 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:57:58,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:57:58,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:58,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:57:58,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:58,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:58,542 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:58,542 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2021-08-13 17:57:58,542 INFO L482 AbstractCegarLoop]: Abstraction has has 183 places, 1983 transitions, 62892 flow [2021-08-13 17:57:58,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:58,542 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:58,542 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:58,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 17:57:58,543 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:58,543 INFO L82 PathProgramCache]: Analyzing trace with hash 513407567, now seen corresponding path program 16 times [2021-08-13 17:57:58,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:58,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978879351] [2021-08-13 17:57:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:58,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:58,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:58,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:58,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:58,561 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:58,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:58,567 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:58,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:58,578 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:58,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:58,593 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:58,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:58,611 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:57:58,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:57:58,634 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:57:58,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:57:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:58,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:58,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978879351] [2021-08-13 17:57:58,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978879351] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:58,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:58,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:57:58,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506817920] [2021-08-13 17:57:58,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:57:58,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:58,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:57:58,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:57:58,657 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:57:58,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 1983 transitions, 62892 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:58,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:58,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:57:58,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:01,517 INFO L129 PetriNetUnfolder]: 804/4175 cut-off events. [2021-08-13 17:58:01,517 INFO L130 PetriNetUnfolder]: For 81657/212021 co-relation queries the response was YES. [2021-08-13 17:58:01,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37939 conditions, 4175 events. 804/4175 cut-off events. For 81657/212021 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 53344 event pairs, 0 based on Foata normal form. 403/4471 useless extension candidates. Maximal degree in co-relation 34674. Up to 1042 conditions per place. [2021-08-13 17:58:01,550 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1515 selfloop transitions, 409 changer transitions 37/1982 dead transitions. [2021-08-13 17:58:01,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1982 transitions, 66782 flow [2021-08-13 17:58:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:01,551 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:01,551 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:01,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:01,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:01,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:01,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,552 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,553 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 140 predicate places. [2021-08-13 17:58:01,553 INFO L482 AbstractCegarLoop]: Abstraction has has 191 places, 1982 transitions, 66782 flow [2021-08-13 17:58:01,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,553 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:01,553 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:01,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 17:58:01,553 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:01,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1885841467, now seen corresponding path program 17 times [2021-08-13 17:58:01,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:01,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147198910] [2021-08-13 17:58:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:01,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:01,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:01,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:01,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:01,579 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:01,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:01,589 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:01,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:01,603 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:01,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:01,621 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:58:01,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:58:01,644 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:01,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:01,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:01,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147198910] [2021-08-13 17:58:01,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147198910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:01,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:01,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:01,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735053082] [2021-08-13 17:58:01,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:01,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:01,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:01,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:01,671 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:01,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1982 transitions, 66782 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:01,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:01,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:04,455 INFO L129 PetriNetUnfolder]: 804/4186 cut-off events. [2021-08-13 17:58:04,455 INFO L130 PetriNetUnfolder]: For 86704/205584 co-relation queries the response was YES. [2021-08-13 17:58:04,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39920 conditions, 4186 events. 804/4186 cut-off events. For 86704/205584 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 53507 event pairs, 0 based on Foata normal form. 362/4436 useless extension candidates. Maximal degree in co-relation 36514. Up to 1041 conditions per place. [2021-08-13 17:58:04,489 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1523 selfloop transitions, 397 changer transitions 40/1981 dead transitions. [2021-08-13 17:58:04,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1981 transitions, 70668 flow [2021-08-13 17:58:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:04,490 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:04,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:04,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:04,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:04,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:04,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:04,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:04,492 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:04,492 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 148 predicate places. [2021-08-13 17:58:04,492 INFO L482 AbstractCegarLoop]: Abstraction has has 199 places, 1981 transitions, 70668 flow [2021-08-13 17:58:04,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:04,492 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:04,492 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:04,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 17:58:04,492 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:04,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1906370179, now seen corresponding path program 18 times [2021-08-13 17:58:04,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:04,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964659017] [2021-08-13 17:58:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:04,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:04,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:04,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:04,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:04,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:04,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:04,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:04,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:04,528 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:04,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:04,542 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 17:58:04,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 17:58:04,571 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:04,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:04,593 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:04,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:04,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:04,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964659017] [2021-08-13 17:58:04,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964659017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:04,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:04,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:04,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460530435] [2021-08-13 17:58:04,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:04,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:04,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:04,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:04,615 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:04,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1981 transitions, 70668 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:04,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:04,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:04,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:07,592 INFO L129 PetriNetUnfolder]: 804/4262 cut-off events. [2021-08-13 17:58:07,592 INFO L130 PetriNetUnfolder]: For 169221/457720 co-relation queries the response was YES. [2021-08-13 17:58:07,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42092 conditions, 4262 events. 804/4262 cut-off events. For 169221/457720 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 54836 event pairs, 0 based on Foata normal form. 674/4829 useless extension candidates. Maximal degree in co-relation 38547. Up to 1040 conditions per place. [2021-08-13 17:58:07,627 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1524 selfloop transitions, 391 changer transitions 44/1980 dead transitions. [2021-08-13 17:58:07,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1980 transitions, 74550 flow [2021-08-13 17:58:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:07,629 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:07,629 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:07,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:07,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:07,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:07,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:07,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:07,630 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:07,630 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 156 predicate places. [2021-08-13 17:58:07,630 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 1980 transitions, 74550 flow [2021-08-13 17:58:07,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:07,631 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:07,631 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:07,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 17:58:07,631 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:07,631 INFO L82 PathProgramCache]: Analyzing trace with hash 790862053, now seen corresponding path program 19 times [2021-08-13 17:58:07,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:07,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361762006] [2021-08-13 17:58:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:07,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:07,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:07,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:07,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:07,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:07,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:07,656 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:07,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:07,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:07,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:07,678 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 17:58:07,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 17:58:07,708 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:07,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:07,730 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:07,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:07,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:07,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361762006] [2021-08-13 17:58:07,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361762006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:07,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:07,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:07,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571152248] [2021-08-13 17:58:07,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:07,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:07,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:07,752 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:07,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 1980 transitions, 74550 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:07,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:07,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:07,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:10,902 INFO L129 PetriNetUnfolder]: 798/4337 cut-off events. [2021-08-13 17:58:10,902 INFO L130 PetriNetUnfolder]: For 148431/340048 co-relation queries the response was YES. [2021-08-13 17:58:10,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44923 conditions, 4337 events. 798/4337 cut-off events. For 148431/340048 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 56355 event pairs, 0 based on Foata normal form. 514/4724 useless extension candidates. Maximal degree in co-relation 40919. Up to 1082 conditions per place. [2021-08-13 17:58:10,939 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1554 selfloop transitions, 401 changer transitions 46/2022 dead transitions. [2021-08-13 17:58:10,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 2022 transitions, 80148 flow [2021-08-13 17:58:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:10,940 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:10,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:10,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:10,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:10,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:10,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,942 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,942 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 164 predicate places. [2021-08-13 17:58:10,942 INFO L482 AbstractCegarLoop]: Abstraction has has 215 places, 2022 transitions, 80148 flow [2021-08-13 17:58:10,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,942 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:10,942 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:10,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 17:58:10,942 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:10,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1012566471, now seen corresponding path program 20 times [2021-08-13 17:58:10,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:10,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937963454] [2021-08-13 17:58:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:10,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:10,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:10,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:10,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:10,967 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:10,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:10,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:10,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:10,991 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:10,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:11,009 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:58:11,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:58:11,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:11,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:11,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937963454] [2021-08-13 17:58:11,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937963454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:11,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:11,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:11,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821851417] [2021-08-13 17:58:11,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:11,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:11,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:11,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:11,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:11,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 2022 transitions, 80148 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:11,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:11,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:11,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:14,196 INFO L129 PetriNetUnfolder]: 798/4314 cut-off events. [2021-08-13 17:58:14,196 INFO L130 PetriNetUnfolder]: For 168796/372339 co-relation queries the response was YES. [2021-08-13 17:58:14,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46838 conditions, 4314 events. 798/4314 cut-off events. For 168796/372339 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 55973 event pairs, 0 based on Foata normal form. 514/4708 useless extension candidates. Maximal degree in co-relation 42685. Up to 1081 conditions per place. [2021-08-13 17:58:14,233 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1550 selfloop transitions, 402 changer transitions 48/2021 dead transitions. [2021-08-13 17:58:14,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 2021 transitions, 84108 flow [2021-08-13 17:58:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:14,234 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:14,234 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:14,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:14,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:14,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:14,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:14,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:14,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:14,236 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 172 predicate places. [2021-08-13 17:58:14,236 INFO L482 AbstractCegarLoop]: Abstraction has has 223 places, 2021 transitions, 84108 flow [2021-08-13 17:58:14,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:14,236 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:14,236 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:14,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 17:58:14,236 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:14,237 INFO L82 PathProgramCache]: Analyzing trace with hash -256170619, now seen corresponding path program 21 times [2021-08-13 17:58:14,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:14,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154105883] [2021-08-13 17:58:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:14,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:14,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:14,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:14,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:14,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:14,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:14,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:14,282 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:14,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:14,296 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:14,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:14,313 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:14,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:14,336 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:14,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:14,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:14,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154105883] [2021-08-13 17:58:14,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154105883] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:14,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:14,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:14,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128032055] [2021-08-13 17:58:14,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:14,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:14,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:14,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:14,360 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:14,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 2021 transitions, 84108 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:14,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:14,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:14,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:17,712 INFO L129 PetriNetUnfolder]: 798/4338 cut-off events. [2021-08-13 17:58:17,713 INFO L130 PetriNetUnfolder]: For 215267/478135 co-relation queries the response was YES. [2021-08-13 17:58:17,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48890 conditions, 4338 events. 798/4338 cut-off events. For 215267/478135 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 56429 event pairs, 0 based on Foata normal form. 581/4795 useless extension candidates. Maximal degree in co-relation 44590. Up to 1080 conditions per place. [2021-08-13 17:58:17,892 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1546 selfloop transitions, 402 changer transitions 51/2020 dead transitions. [2021-08-13 17:58:17,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 2020 transitions, 88064 flow [2021-08-13 17:58:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:17,893 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:17,893 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:17,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:17,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:17,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:17,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,895 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 180 predicate places. [2021-08-13 17:58:17,895 INFO L482 AbstractCegarLoop]: Abstraction has has 231 places, 2020 transitions, 88064 flow [2021-08-13 17:58:17,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,895 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:17,895 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:17,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 17:58:17,896 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:17,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1192743663, now seen corresponding path program 22 times [2021-08-13 17:58:17,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:17,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703117044] [2021-08-13 17:58:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:17,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:17,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:17,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:17,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:17,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:17,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:17,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:17,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:17,931 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:17,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:17,944 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:17,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:17,961 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:17,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:17,983 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:17,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:18,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:18,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703117044] [2021-08-13 17:58:18,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703117044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:18,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:18,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:18,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484543262] [2021-08-13 17:58:18,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:18,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:18,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:18,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:18,007 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:18,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 2020 transitions, 88064 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:18,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:18,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:18,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:21,560 INFO L129 PetriNetUnfolder]: 792/4440 cut-off events. [2021-08-13 17:58:21,560 INFO L130 PetriNetUnfolder]: For 167987/327947 co-relation queries the response was YES. [2021-08-13 17:58:21,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51431 conditions, 4440 events. 792/4440 cut-off events. For 167987/327947 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 58279 event pairs, 0 based on Foata normal form. 362/4680 useless extension candidates. Maximal degree in co-relation 46804. Up to 1093 conditions per place. [2021-08-13 17:58:21,597 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1558 selfloop transitions, 401 changer transitions 53/2033 dead transitions. [2021-08-13 17:58:21,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 2033 transitions, 92660 flow [2021-08-13 17:58:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:21,598 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:21,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:21,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:21,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:21,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:21,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:21,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:21,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:21,600 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 188 predicate places. [2021-08-13 17:58:21,600 INFO L482 AbstractCegarLoop]: Abstraction has has 239 places, 2033 transitions, 92660 flow [2021-08-13 17:58:21,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:21,600 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:21,600 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:21,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 17:58:21,601 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash 691114569, now seen corresponding path program 23 times [2021-08-13 17:58:21,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:21,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694421264] [2021-08-13 17:58:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:21,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:21,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:21,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:21,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:21,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:21,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:21,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:21,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:21,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:21,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:21,648 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 17:58:21,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 17:58:21,677 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:58:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:58:21,702 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:21,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:21,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:21,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694421264] [2021-08-13 17:58:21,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694421264] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:21,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:21,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:21,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045038478] [2021-08-13 17:58:21,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:21,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:21,726 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:21,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 2033 transitions, 92660 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:21,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:21,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:21,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:25,334 INFO L129 PetriNetUnfolder]: 792/4377 cut-off events. [2021-08-13 17:58:25,334 INFO L130 PetriNetUnfolder]: For 271428/563812 co-relation queries the response was YES. [2021-08-13 17:58:25,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53233 conditions, 4377 events. 792/4377 cut-off events. For 271428/563812 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 57255 event pairs, 0 based on Foata normal form. 581/4832 useless extension candidates. Maximal degree in co-relation 48456. Up to 1092 conditions per place. [2021-08-13 17:58:25,372 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1556 selfloop transitions, 399 changer transitions 56/2032 dead transitions. [2021-08-13 17:58:25,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 2032 transitions, 96636 flow [2021-08-13 17:58:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:25,373 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:25,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:25,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:25,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:25,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:25,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,375 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 196 predicate places. [2021-08-13 17:58:25,375 INFO L482 AbstractCegarLoop]: Abstraction has has 247 places, 2032 transitions, 96636 flow [2021-08-13 17:58:25,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,375 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:25,375 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:25,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 17:58:25,376 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:25,376 INFO L82 PathProgramCache]: Analyzing trace with hash 39709473, now seen corresponding path program 24 times [2021-08-13 17:58:25,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:25,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350310631] [2021-08-13 17:58:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:25,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:25,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:25,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:25,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:25,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:25,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:25,398 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:25,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:25,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:25,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:25,421 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:25,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:25,438 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:25,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:25,462 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:25,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:25,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:25,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350310631] [2021-08-13 17:58:25,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350310631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:25,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:25,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:25,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319852973] [2021-08-13 17:58:25,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:25,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:25,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:25,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:25,485 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:25,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 2032 transitions, 96636 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:25,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:25,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:29,698 INFO L129 PetriNetUnfolder]: 792/4356 cut-off events. [2021-08-13 17:58:29,698 INFO L130 PetriNetUnfolder]: For 301043/608185 co-relation queries the response was YES. [2021-08-13 17:58:29,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55160 conditions, 4356 events. 792/4356 cut-off events. For 301043/608185 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 56922 event pairs, 0 based on Foata normal form. 581/4813 useless extension candidates. Maximal degree in co-relation 50235. Up to 1091 conditions per place. [2021-08-13 17:58:29,734 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1552 selfloop transitions, 398 changer transitions 60/2031 dead transitions. [2021-08-13 17:58:29,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 2031 transitions, 100608 flow [2021-08-13 17:58:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:29,735 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:29,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:29,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:29,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:29,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:29,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,737 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,737 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 204 predicate places. [2021-08-13 17:58:29,737 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 2031 transitions, 100608 flow [2021-08-13 17:58:29,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,737 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:29,737 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:29,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 17:58:29,737 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:29,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1859241101, now seen corresponding path program 25 times [2021-08-13 17:58:29,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:29,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295924173] [2021-08-13 17:58:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:29,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:29,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:29,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:29,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:29,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:29,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:29,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:29,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:29,779 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:29,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:29,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:29,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:29,818 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:29,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:29,842 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:29,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:29,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:29,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295924173] [2021-08-13 17:58:29,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295924173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:29,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:29,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:29,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036465370] [2021-08-13 17:58:29,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:29,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:29,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:29,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:29,867 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:29,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 2031 transitions, 100608 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:29,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:29,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:33,932 INFO L129 PetriNetUnfolder]: 774/4603 cut-off events. [2021-08-13 17:58:33,932 INFO L130 PetriNetUnfolder]: For 235278/419886 co-relation queries the response was YES. [2021-08-13 17:58:33,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59401 conditions, 4603 events. 774/4603 cut-off events. For 235278/419886 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 61753 event pairs, 0 based on Foata normal form. 362/4820 useless extension candidates. Maximal degree in co-relation 53518. Up to 1161 conditions per place. [2021-08-13 17:58:33,970 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1605 selfloop transitions, 413 changer transitions 62/2101 dead transitions. [2021-08-13 17:58:33,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 2101 transitions, 108268 flow [2021-08-13 17:58:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:33,972 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:33,972 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:33,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:33,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:33,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:33,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:33,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:33,973 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:33,973 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 212 predicate places. [2021-08-13 17:58:33,973 INFO L482 AbstractCegarLoop]: Abstraction has has 263 places, 2101 transitions, 108268 flow [2021-08-13 17:58:33,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:33,974 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:33,974 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:33,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 17:58:33,974 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:33,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:33,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2054376981, now seen corresponding path program 26 times [2021-08-13 17:58:33,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:33,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445569294] [2021-08-13 17:58:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:33,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:33,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:33,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:33,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:33,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:33,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:33,995 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:33,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:34,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:34,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:34,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:34,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:34,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:34,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:34,063 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:34,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:34,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:34,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445569294] [2021-08-13 17:58:34,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445569294] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:34,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:34,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:34,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336929157] [2021-08-13 17:58:34,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:34,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:34,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:34,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:34,088 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:34,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 2101 transitions, 108268 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:34,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:34,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:34,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:38,477 INFO L129 PetriNetUnfolder]: 774/4678 cut-off events. [2021-08-13 17:58:38,478 INFO L130 PetriNetUnfolder]: For 374732/711390 co-relation queries the response was YES. [2021-08-13 17:58:38,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61682 conditions, 4678 events. 774/4678 cut-off events. For 374732/711390 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 63014 event pairs, 0 based on Foata normal form. 581/5117 useless extension candidates. Maximal degree in co-relation 55627. Up to 1160 conditions per place. [2021-08-13 17:58:38,517 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1602 selfloop transitions, 412 changer transitions 65/2100 dead transitions. [2021-08-13 17:58:38,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 2100 transitions, 112374 flow [2021-08-13 17:58:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:38,518 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:38,518 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:38,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:38,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:38,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:38,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:38,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:38,519 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:38,520 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2021-08-13 17:58:38,520 INFO L482 AbstractCegarLoop]: Abstraction has has 271 places, 2100 transitions, 112374 flow [2021-08-13 17:58:38,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:38,520 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:38,520 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:38,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 17:58:38,520 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1837950749, now seen corresponding path program 27 times [2021-08-13 17:58:38,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:38,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509311792] [2021-08-13 17:58:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:38,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:38,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:38,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:38,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:38,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:38,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:38,545 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:38,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:38,556 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:38,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:38,571 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:38,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:38,590 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:38,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:38,616 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:38,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:38,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:38,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509311792] [2021-08-13 17:58:38,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509311792] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:38,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:38,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:38,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212104421] [2021-08-13 17:58:38,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:38,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:38,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:38,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:38,642 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:38,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 2100 transitions, 112374 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:38,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:38,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:38,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:43,300 INFO L129 PetriNetUnfolder]: 774/4602 cut-off events. [2021-08-13 17:58:43,300 INFO L130 PetriNetUnfolder]: For 362425/649450 co-relation queries the response was YES. [2021-08-13 17:58:43,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63511 conditions, 4602 events. 774/4602 cut-off events. For 362425/649450 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 61670 event pairs, 0 based on Foata normal form. 514/4969 useless extension candidates. Maximal degree in co-relation 57286. Up to 1159 conditions per place. [2021-08-13 17:58:43,339 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1600 selfloop transitions, 411 changer transitions 67/2099 dead transitions. [2021-08-13 17:58:43,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 2099 transitions, 116476 flow [2021-08-13 17:58:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:43,340 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:43,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:43,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:43,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:43,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:43,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:43,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:43,342 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:43,342 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 228 predicate places. [2021-08-13 17:58:43,342 INFO L482 AbstractCegarLoop]: Abstraction has has 279 places, 2099 transitions, 116476 flow [2021-08-13 17:58:43,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:43,342 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:43,342 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:43,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 17:58:43,343 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1942780177, now seen corresponding path program 28 times [2021-08-13 17:58:43,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:43,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743576070] [2021-08-13 17:58:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:43,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:43,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:43,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:43,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:43,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:43,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:43,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:43,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:43,375 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:43,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:43,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:43,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:43,407 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:43,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:43,431 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:43,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:43,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:43,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743576070] [2021-08-13 17:58:43,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743576070] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:43,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:43,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:43,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728200229] [2021-08-13 17:58:43,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:43,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:43,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:43,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:43,454 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:43,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 2099 transitions, 116476 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:43,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:43,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:43,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:48,069 INFO L129 PetriNetUnfolder]: 774/4584 cut-off events. [2021-08-13 17:58:48,069 INFO L130 PetriNetUnfolder]: For 394559/693510 co-relation queries the response was YES. [2021-08-13 17:58:48,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65510 conditions, 4584 events. 774/4584 cut-off events. For 394559/693510 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 61324 event pairs, 0 based on Foata normal form. 514/4953 useless extension candidates. Maximal degree in co-relation 59117. Up to 1158 conditions per place. [2021-08-13 17:58:48,107 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1593 selfloop transitions, 415 changer transitions 69/2098 dead transitions. [2021-08-13 17:58:48,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 2098 transitions, 120574 flow [2021-08-13 17:58:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:48,108 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:48,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:48,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:48,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:48,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:48,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:48,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:48,110 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:48,110 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 236 predicate places. [2021-08-13 17:58:48,111 INFO L482 AbstractCegarLoop]: Abstraction has has 287 places, 2098 transitions, 120574 flow [2021-08-13 17:58:48,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:48,111 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:48,111 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:48,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 17:58:48,111 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash -623048101, now seen corresponding path program 29 times [2021-08-13 17:58:48,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:48,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462114148] [2021-08-13 17:58:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:48,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:48,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:48,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:48,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:48,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:48,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:48,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:48,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:48,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:48,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:48,156 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:48,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:48,173 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:48,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:48,195 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:48,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:48,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:48,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462114148] [2021-08-13 17:58:48,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462114148] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:48,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:48,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:48,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464354127] [2021-08-13 17:58:48,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:48,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:48,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:48,218 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:48,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 2098 transitions, 120574 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:48,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:48,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:48,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:52,732 INFO L129 PetriNetUnfolder]: 774/4589 cut-off events. [2021-08-13 17:58:52,733 INFO L130 PetriNetUnfolder]: For 365027/622947 co-relation queries the response was YES. [2021-08-13 17:58:52,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67574 conditions, 4589 events. 774/4589 cut-off events. For 365027/622947 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 61458 event pairs, 0 based on Foata normal form. 403/4849 useless extension candidates. Maximal degree in co-relation 61015. Up to 1157 conditions per place. [2021-08-13 17:58:52,774 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1596 selfloop transitions, 408 changer transitions 72/2097 dead transitions. [2021-08-13 17:58:52,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 2097 transitions, 124668 flow [2021-08-13 17:58:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:52,775 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:52,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:52,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:52,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:52,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:52,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:52,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:52,777 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:52,777 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 244 predicate places. [2021-08-13 17:58:52,777 INFO L482 AbstractCegarLoop]: Abstraction has has 295 places, 2097 transitions, 124668 flow [2021-08-13 17:58:52,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:52,777 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:52,777 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:52,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 17:58:52,777 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:52,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash -840040611, now seen corresponding path program 30 times [2021-08-13 17:58:52,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:52,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412049283] [2021-08-13 17:58:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:52,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:52,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:52,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:52,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:52,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:52,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:52,799 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:52,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:52,808 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:52,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:52,821 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:52,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:53,002 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-08-13 17:58:53,003 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:58:53,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:58:53,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:53,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:53,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:53,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412049283] [2021-08-13 17:58:53,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412049283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:53,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:53,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:53,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426489971] [2021-08-13 17:58:53,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:53,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:53,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:53,051 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:53,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 2097 transitions, 124668 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:53,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:53,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:53,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:57,720 INFO L129 PetriNetUnfolder]: 774/4672 cut-off events. [2021-08-13 17:58:57,720 INFO L130 PetriNetUnfolder]: For 562735/1009774 co-relation queries the response was YES. [2021-08-13 17:58:57,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69873 conditions, 4672 events. 774/4672 cut-off events. For 562735/1009774 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 62871 event pairs, 0 based on Foata normal form. 617/5145 useless extension candidates. Maximal degree in co-relation 63150. Up to 1156 conditions per place. [2021-08-13 17:58:57,762 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1588 selfloop transitions, 410 changer transitions 77/2096 dead transitions. [2021-08-13 17:58:57,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 2096 transitions, 128758 flow [2021-08-13 17:58:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:58:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:58:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:58:57,763 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:58:57,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:58:57,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:58:57,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:57,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:58:57,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:57,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:57,765 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:57,765 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 252 predicate places. [2021-08-13 17:58:57,765 INFO L482 AbstractCegarLoop]: Abstraction has has 303 places, 2096 transitions, 128758 flow [2021-08-13 17:58:57,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:57,765 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:57,765 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:57,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 17:58:57,765 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1481459457, now seen corresponding path program 31 times [2021-08-13 17:58:57,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:57,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797510298] [2021-08-13 17:58:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:57,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:57,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:57,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:57,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:57,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:57,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:57,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:57,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:57,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:57,818 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:57,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:57,836 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:58:57,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:58:57,860 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:58:57,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:58:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:57,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:57,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797510298] [2021-08-13 17:58:57,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797510298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:57,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:57,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:58:57,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763292165] [2021-08-13 17:58:57,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:58:57,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:57,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:58:57,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:58:57,884 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:58:57,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 2096 transitions, 128758 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:57,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:57,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:58:57,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:03,471 INFO L129 PetriNetUnfolder]: 768/5302 cut-off events. [2021-08-13 17:59:03,471 INFO L130 PetriNetUnfolder]: For 458457/740854 co-relation queries the response was YES. [2021-08-13 17:59:03,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79884 conditions, 5302 events. 768/5302 cut-off events. For 458457/740854 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 75146 event pairs, 0 based on Foata normal form. 372/5497 useless extension candidates. Maximal degree in co-relation 70899. Up to 1376 conditions per place. [2021-08-13 17:59:03,516 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1708 selfloop transitions, 508 changer transitions 79/2316 dead transitions. [2021-08-13 17:59:03,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 2316 transitions, 146988 flow [2021-08-13 17:59:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:03,517 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:03,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:03,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:03,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:03,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:03,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:03,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:03,518 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:03,518 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 260 predicate places. [2021-08-13 17:59:03,518 INFO L482 AbstractCegarLoop]: Abstraction has has 311 places, 2316 transitions, 146988 flow [2021-08-13 17:59:03,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:03,519 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:03,519 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:03,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 17:59:03,519 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:03,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash -455830095, now seen corresponding path program 32 times [2021-08-13 17:59:03,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:03,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014119046] [2021-08-13 17:59:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:03,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:03,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:03,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:03,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:03,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:03,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:03,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:03,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:03,551 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:59:03,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:59:03,565 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:59:03,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:59:03,582 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:59:03,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:59:03,605 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:03,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:03,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:03,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014119046] [2021-08-13 17:59:03,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014119046] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:03,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:03,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:03,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079632601] [2021-08-13 17:59:03,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:03,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:03,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:03,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:03,629 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:03,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 2316 transitions, 146988 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:03,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:03,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:03,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:09,870 INFO L129 PetriNetUnfolder]: 768/5300 cut-off events. [2021-08-13 17:59:09,870 INFO L130 PetriNetUnfolder]: For 488626/780638 co-relation queries the response was YES. [2021-08-13 17:59:09,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82144 conditions, 5300 events. 768/5300 cut-off events. For 488626/780638 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 75094 event pairs, 0 based on Foata normal form. 396/5515 useless extension candidates. Maximal degree in co-relation 72939. Up to 1375 conditions per place. [2021-08-13 17:59:09,916 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1718 selfloop transitions, 495 changer transitions 81/2315 dead transitions. [2021-08-13 17:59:09,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 2315 transitions, 151512 flow [2021-08-13 17:59:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:09,917 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:09,917 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:09,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:09,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:09,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:09,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:09,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:09,918 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:09,918 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 268 predicate places. [2021-08-13 17:59:09,918 INFO L482 AbstractCegarLoop]: Abstraction has has 319 places, 2315 transitions, 151512 flow [2021-08-13 17:59:09,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:09,919 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:09,919 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:09,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 17:59:09,919 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:09,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:09,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1059929887, now seen corresponding path program 33 times [2021-08-13 17:59:09,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:09,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083460354] [2021-08-13 17:59:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:09,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:09,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:09,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:09,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:09,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:09,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:09,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:09,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:09,950 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:59:09,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:59:09,964 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:59:09,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:59:09,982 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:59:09,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:59:10,007 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:10,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:10,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:10,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083460354] [2021-08-13 17:59:10,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083460354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:10,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:10,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:10,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606825886] [2021-08-13 17:59:10,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:10,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:10,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:10,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:10,032 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:10,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 2315 transitions, 151512 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:10,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:10,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:10,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:16,773 INFO L129 PetriNetUnfolder]: 768/5313 cut-off events. [2021-08-13 17:59:16,773 INFO L130 PetriNetUnfolder]: For 737380/1243229 co-relation queries the response was YES. [2021-08-13 17:59:16,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84448 conditions, 5313 events. 768/5313 cut-off events. For 737380/1243229 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 75402 event pairs, 0 based on Foata normal form. 622/5755 useless extension candidates. Maximal degree in co-relation 75025. Up to 1374 conditions per place. [2021-08-13 17:59:16,819 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1716 selfloop transitions, 493 changer transitions 84/2314 dead transitions. [2021-08-13 17:59:16,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 2314 transitions, 156032 flow [2021-08-13 17:59:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:16,820 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:16,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:16,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:16,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:16,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:16,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:16,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:16,822 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:16,822 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 276 predicate places. [2021-08-13 17:59:16,822 INFO L482 AbstractCegarLoop]: Abstraction has has 327 places, 2314 transitions, 156032 flow [2021-08-13 17:59:16,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:16,822 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:16,822 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:16,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 17:59:16,822 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:16,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:16,822 INFO L82 PathProgramCache]: Analyzing trace with hash 868543709, now seen corresponding path program 34 times [2021-08-13 17:59:16,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:16,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572622789] [2021-08-13 17:59:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:16,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:16,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:16,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:16,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:16,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:16,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:16,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:16,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:59:16,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:59:16,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:16,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:16,885 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:59:16,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:59:16,908 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:16,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:16,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:16,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572622789] [2021-08-13 17:59:16,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572622789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:16,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:16,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:16,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325048500] [2021-08-13 17:59:16,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:16,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:16,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:16,932 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:16,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 2314 transitions, 156032 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:16,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:16,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:16,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:23,717 INFO L129 PetriNetUnfolder]: 768/5362 cut-off events. [2021-08-13 17:59:23,717 INFO L130 PetriNetUnfolder]: For 559607/871625 co-relation queries the response was YES. [2021-08-13 17:59:23,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86856 conditions, 5362 events. 768/5362 cut-off events. For 559607/871625 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 76315 event pairs, 0 based on Foata normal form. 388/5570 useless extension candidates. Maximal degree in co-relation 77217. Up to 1373 conditions per place. [2021-08-13 17:59:23,763 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1710 selfloop transitions, 496 changer transitions 86/2313 dead transitions. [2021-08-13 17:59:23,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 2313 transitions, 160548 flow [2021-08-13 17:59:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:23,764 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:23,764 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:23,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:23,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:23,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:23,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:23,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:23,766 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:23,766 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 284 predicate places. [2021-08-13 17:59:23,766 INFO L482 AbstractCegarLoop]: Abstraction has has 335 places, 2313 transitions, 160548 flow [2021-08-13 17:59:23,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:23,766 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:23,766 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:23,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 17:59:23,766 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:23,766 INFO L82 PathProgramCache]: Analyzing trace with hash 28559047, now seen corresponding path program 35 times [2021-08-13 17:59:23,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:23,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332466805] [2021-08-13 17:59:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:23,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:23,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:23,782 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:23,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:23,788 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:23,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:23,797 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:59:23,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:59:23,810 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:23,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:23,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:59:23,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:59:23,851 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:23,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:23,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:23,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332466805] [2021-08-13 17:59:23,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332466805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:23,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:23,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:23,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243067720] [2021-08-13 17:59:23,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:23,876 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:23,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 2313 transitions, 160548 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:23,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:23,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:23,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:30,547 INFO L129 PetriNetUnfolder]: 768/5322 cut-off events. [2021-08-13 17:59:30,547 INFO L130 PetriNetUnfolder]: For 1080828/1819605 co-relation queries the response was YES. [2021-08-13 17:59:30,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88998 conditions, 5322 events. 768/5322 cut-off events. For 1080828/1819605 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 75562 event pairs, 0 based on Foata normal form. 800/5936 useless extension candidates. Maximal degree in co-relation 79145. Up to 1372 conditions per place. [2021-08-13 17:59:30,610 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1708 selfloop transitions, 494 changer transitions 89/2312 dead transitions. [2021-08-13 17:59:30,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 2312 transitions, 165060 flow [2021-08-13 17:59:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:30,611 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:30,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:30,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:30,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:30,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:30,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,613 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 292 predicate places. [2021-08-13 17:59:30,613 INFO L482 AbstractCegarLoop]: Abstraction has has 343 places, 2312 transitions, 165060 flow [2021-08-13 17:59:30,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,613 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:30,613 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:30,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 17:59:30,614 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:30,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1340348765, now seen corresponding path program 36 times [2021-08-13 17:59:30,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:30,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432628817] [2021-08-13 17:59:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:30,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:30,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:30,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:30,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:30,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:30,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:30,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:30,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:30,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:30,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:30,669 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 17:59:30,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 17:59:30,704 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:59:30,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:59:30,733 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:30,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:30,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:30,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432628817] [2021-08-13 17:59:30,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432628817] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:30,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:30,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:30,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689133756] [2021-08-13 17:59:30,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:30,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:30,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:30,761 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:30,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 2312 transitions, 165060 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:30,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:30,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:38,081 INFO L129 PetriNetUnfolder]: 749/5574 cut-off events. [2021-08-13 17:59:38,081 INFO L130 PetriNetUnfolder]: For 762041/1162471 co-relation queries the response was YES. [2021-08-13 17:59:38,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94530 conditions, 5574 events. 749/5574 cut-off events. For 762041/1162471 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 80881 event pairs, 0 based on Foata normal form. 477/5856 useless extension candidates. Maximal degree in co-relation 83265. Up to 1449 conditions per place. [2021-08-13 17:59:38,129 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1752 selfloop transitions, 525 changer transitions 91/2389 dead transitions. [2021-08-13 17:59:38,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 2389 transitions, 175340 flow [2021-08-13 17:59:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:38,130 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:38,130 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:38,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:38,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:38,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:38,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:38,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:38,132 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:38,132 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 300 predicate places. [2021-08-13 17:59:38,132 INFO L482 AbstractCegarLoop]: Abstraction has has 351 places, 2389 transitions, 175340 flow [2021-08-13 17:59:38,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:38,132 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:38,132 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:38,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 17:59:38,132 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 680158195, now seen corresponding path program 37 times [2021-08-13 17:59:38,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:38,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782966807] [2021-08-13 17:59:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:38,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:38,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:38,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:38,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:38,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:38,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:38,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:38,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:38,163 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:59:38,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:59:38,176 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:38,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:38,193 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:59:38,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:59:38,217 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:38,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:38,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:38,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782966807] [2021-08-13 17:59:38,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782966807] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:38,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:38,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:38,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812611856] [2021-08-13 17:59:38,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:38,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:38,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:38,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:38,240 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:38,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 2389 transitions, 175340 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:38,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:38,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:38,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:45,239 INFO L129 PetriNetUnfolder]: 749/5585 cut-off events. [2021-08-13 17:59:45,239 INFO L130 PetriNetUnfolder]: For 911108/1416474 co-relation queries the response was YES. [2021-08-13 17:59:45,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96895 conditions, 5585 events. 749/5585 cut-off events. For 911108/1416474 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 81130 event pairs, 0 based on Foata normal form. 536/5925 useless extension candidates. Maximal degree in co-relation 85390. Up to 1448 conditions per place. [2021-08-13 17:59:45,287 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1767 selfloop transitions, 507 changer transitions 93/2388 dead transitions. [2021-08-13 17:59:45,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 2388 transitions, 180000 flow [2021-08-13 17:59:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:45,288 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:45,288 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:45,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:45,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:45,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:45,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:45,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:45,290 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:45,290 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 308 predicate places. [2021-08-13 17:59:45,290 INFO L482 AbstractCegarLoop]: Abstraction has has 359 places, 2388 transitions, 180000 flow [2021-08-13 17:59:45,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:45,290 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:45,290 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:45,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 17:59:45,290 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:45,290 INFO L82 PathProgramCache]: Analyzing trace with hash -206378783, now seen corresponding path program 38 times [2021-08-13 17:59:45,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:45,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328269173] [2021-08-13 17:59:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:45,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:45,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:45,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:45,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:45,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:45,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:45,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:45,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:45,326 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:59:45,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:59:45,341 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:45,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:45,360 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:59:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:59:45,386 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:45,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:45,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:45,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328269173] [2021-08-13 17:59:45,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328269173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:45,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:45,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:45,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135692808] [2021-08-13 17:59:45,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:45,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:45,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:45,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:45,413 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:45,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 2388 transitions, 180000 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:45,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:45,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:45,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:52,564 INFO L129 PetriNetUnfolder]: 749/5617 cut-off events. [2021-08-13 17:59:52,565 INFO L130 PetriNetUnfolder]: For 671691/969006 co-relation queries the response was YES. [2021-08-13 17:59:52,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99324 conditions, 5617 events. 749/5617 cut-off events. For 671691/969006 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 81643 event pairs, 0 based on Foata normal form. 351/5776 useless extension candidates. Maximal degree in co-relation 87581. Up to 1447 conditions per place. [2021-08-13 17:59:52,610 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1765 selfloop transitions, 504 changer transitions 97/2387 dead transitions. [2021-08-13 17:59:52,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 2387 transitions, 184656 flow [2021-08-13 17:59:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:52,611 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:52,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:52,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:52,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:52,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:52,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:52,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:52,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:52,613 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 316 predicate places. [2021-08-13 17:59:52,613 INFO L482 AbstractCegarLoop]: Abstraction has has 367 places, 2387 transitions, 184656 flow [2021-08-13 17:59:52,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:52,613 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:52,613 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:52,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 17:59:52,613 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:52,613 INFO L82 PathProgramCache]: Analyzing trace with hash 904283587, now seen corresponding path program 39 times [2021-08-13 17:59:52,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:52,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080130806] [2021-08-13 17:59:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:52,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:52,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:52,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:52,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:52,629 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:52,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:52,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:52,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:52,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:52,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:52,656 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:52,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:52,673 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:59:52,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:59:52,696 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 17:59:52,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 17:59:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:52,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:52,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080130806] [2021-08-13 17:59:52,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080130806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:52,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:52,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 17:59:52,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134403144] [2021-08-13 17:59:52,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 17:59:52,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 17:59:52,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 17:59:52,719 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 17:59:52,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 2387 transitions, 184656 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:52,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:52,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 17:59:52,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:59,905 INFO L129 PetriNetUnfolder]: 749/5580 cut-off events. [2021-08-13 17:59:59,906 INFO L130 PetriNetUnfolder]: For 1024937/1560331 co-relation queries the response was YES. [2021-08-13 17:59:59,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101542 conditions, 5580 events. 749/5580 cut-off events. For 1024937/1560331 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 81021 event pairs, 0 based on Foata normal form. 536/5922 useless extension candidates. Maximal degree in co-relation 89563. Up to 1446 conditions per place. [2021-08-13 17:59:59,952 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1746 selfloop transitions, 520 changer transitions 99/2386 dead transitions. [2021-08-13 17:59:59,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 2386 transitions, 189308 flow [2021-08-13 17:59:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 17:59:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 17:59:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 17:59:59,953 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 17:59:59,953 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 17:59:59,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 17:59:59,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:59,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 17:59:59,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:59,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:59,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:59,955 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 324 predicate places. [2021-08-13 17:59:59,955 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 2386 transitions, 189308 flow [2021-08-13 17:59:59,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:59,955 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:59,955 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:59:59,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 17:59:59,955 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:59,955 INFO L82 PathProgramCache]: Analyzing trace with hash 142799669, now seen corresponding path program 40 times [2021-08-13 17:59:59,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:59,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866061481] [2021-08-13 17:59:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:59,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:59,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:59,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:59,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:59,970 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:59:59,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:59:59,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:59,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:59,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:59:59,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:00,007 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 18:00:00,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 18:00:00,026 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:00:00,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:00:00,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:00,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:00,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:00,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866061481] [2021-08-13 18:00:00,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866061481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:00,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:00,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:00,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763914871] [2021-08-13 18:00:00,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:00,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:00,072 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:00,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 2386 transitions, 189308 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:00,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:00,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:00,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:08,021 INFO L129 PetriNetUnfolder]: 749/5565 cut-off events. [2021-08-13 18:00:08,022 INFO L130 PetriNetUnfolder]: For 1084345/1634753 co-relation queries the response was YES. [2021-08-13 18:00:08,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103825 conditions, 5565 events. 749/5565 cut-off events. For 1084345/1634753 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 80655 event pairs, 0 based on Foata normal form. 536/5910 useless extension candidates. Maximal degree in co-relation 91612. Up to 1445 conditions per place. [2021-08-13 18:00:08,070 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1743 selfloop transitions, 519 changer transitions 102/2385 dead transitions. [2021-08-13 18:00:08,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 2385 transitions, 193956 flow [2021-08-13 18:00:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:00:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:00:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:00:08,071 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:00:08,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:00:08,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:00:08,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:08,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:00:08,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:08,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:08,073 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:08,073 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 332 predicate places. [2021-08-13 18:00:08,073 INFO L482 AbstractCegarLoop]: Abstraction has has 383 places, 2385 transitions, 193956 flow [2021-08-13 18:00:08,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:08,073 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:08,073 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:08,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 18:00:08,073 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1101754621, now seen corresponding path program 41 times [2021-08-13 18:00:08,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:08,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994417393] [2021-08-13 18:00:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:08,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:08,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:08,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:08,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:08,119 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:00:08,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:00:08,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:08,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:08,148 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:08,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:08,187 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 18:00:08,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 18:00:08,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 18:00:08,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 18:00:08,258 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:08,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:08,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:08,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994417393] [2021-08-13 18:00:08,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994417393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:08,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:08,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:08,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210196442] [2021-08-13 18:00:08,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:08,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:08,297 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:08,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 2385 transitions, 193956 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:08,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:08,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:08,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:15,961 INFO L129 PetriNetUnfolder]: 749/5580 cut-off events. [2021-08-13 18:00:15,961 INFO L130 PetriNetUnfolder]: For 792361/1115044 co-relation queries the response was YES. [2021-08-13 18:00:15,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106197 conditions, 5580 events. 749/5580 cut-off events. For 792361/1115044 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 80951 event pairs, 0 based on Foata normal form. 351/5738 useless extension candidates. Maximal degree in co-relation 93752. Up to 1444 conditions per place. [2021-08-13 18:00:16,011 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1740 selfloop transitions, 519 changer transitions 104/2384 dead transitions. [2021-08-13 18:00:16,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 2384 transitions, 198600 flow [2021-08-13 18:00:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:00:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:00:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:00:16,014 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:00:16,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:00:16,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:00:16,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:16,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:00:16,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:16,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:16,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:16,015 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 340 predicate places. [2021-08-13 18:00:16,015 INFO L482 AbstractCegarLoop]: Abstraction has has 391 places, 2384 transitions, 198600 flow [2021-08-13 18:00:16,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:16,015 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:16,016 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:16,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 18:00:16,016 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:16,016 INFO L82 PathProgramCache]: Analyzing trace with hash 834640723, now seen corresponding path program 42 times [2021-08-13 18:00:16,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:16,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413599835] [2021-08-13 18:00:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:16,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:16,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:16,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:16,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:16,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:00:16,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:00:16,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:16,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:16,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:16,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 18:00:16,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:16,122 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:00:16,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:00:16,146 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:16,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:16,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:16,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413599835] [2021-08-13 18:00:16,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413599835] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:16,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:16,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:16,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210433226] [2021-08-13 18:00:16,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:16,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:16,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:16,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:16,171 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:16,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 2384 transitions, 198600 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:16,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:16,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:16,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:24,158 INFO L129 PetriNetUnfolder]: 735/5717 cut-off events. [2021-08-13 18:00:24,158 INFO L130 PetriNetUnfolder]: For 1221520/1801956 co-relation queries the response was YES. [2021-08-13 18:00:24,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109883 conditions, 5717 events. 735/5717 cut-off events. For 1221520/1801956 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 83786 event pairs, 0 based on Foata normal form. 536/6058 useless extension candidates. Maximal degree in co-relation 96518. Up to 1468 conditions per place. [2021-08-13 18:00:24,210 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1756 selfloop transitions, 525 changer transitions 106/2408 dead transitions. [2021-08-13 18:00:24,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 2408 transitions, 205390 flow [2021-08-13 18:00:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:00:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:00:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:00:24,211 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:00:24,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:00:24,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:00:24,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:24,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:00:24,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,212 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,213 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 348 predicate places. [2021-08-13 18:00:24,213 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 2408 transitions, 205390 flow [2021-08-13 18:00:24,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,213 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:24,213 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:24,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 18:00:24,213 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:24,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1945203229, now seen corresponding path program 43 times [2021-08-13 18:00:24,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:24,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377231764] [2021-08-13 18:00:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:24,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:24,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:24,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:24,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:24,230 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:00:24,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:00:24,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:24,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:24,247 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:24,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:24,270 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 18:00:24,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 18:00:24,301 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:00:24,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:00:24,323 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:24,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:24,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:24,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377231764] [2021-08-13 18:00:24,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377231764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:24,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:24,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:24,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877688913] [2021-08-13 18:00:24,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:24,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:24,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:24,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:24,350 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:24,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 2408 transitions, 205390 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:24,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:24,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:33,770 INFO L129 PetriNetUnfolder]: 735/5676 cut-off events. [2021-08-13 18:00:33,771 INFO L130 PetriNetUnfolder]: For 1143544/1629472 co-relation queries the response was YES. [2021-08-13 18:00:33,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112109 conditions, 5676 events. 735/5676 cut-off events. For 1143544/1629472 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 83085 event pairs, 0 based on Foata normal form. 477/5954 useless extension candidates. Maximal degree in co-relation 98501. Up to 1467 conditions per place. [2021-08-13 18:00:33,822 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1757 selfloop transitions, 520 changer transitions 109/2407 dead transitions. [2021-08-13 18:00:33,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 2407 transitions, 210076 flow [2021-08-13 18:00:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:00:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:00:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:00:33,823 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:00:33,823 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:00:33,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:00:33,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:33,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:00:33,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,824 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,824 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 356 predicate places. [2021-08-13 18:00:33,824 INFO L482 AbstractCegarLoop]: Abstraction has has 407 places, 2407 transitions, 210076 flow [2021-08-13 18:00:33,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,825 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:33,825 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:33,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 18:00:33,825 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:33,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:33,825 INFO L82 PathProgramCache]: Analyzing trace with hash -600414809, now seen corresponding path program 44 times [2021-08-13 18:00:33,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:33,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208593092] [2021-08-13 18:00:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:33,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:33,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:00:33,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:00:33,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:33,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:33,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:00:33,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:00:33,870 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:33,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:33,889 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:00:33,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:00:33,911 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:33,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:33,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:33,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208593092] [2021-08-13 18:00:33,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208593092] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:33,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:33,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:33,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978526595] [2021-08-13 18:00:33,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:33,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:33,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:33,932 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:33,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 2407 transitions, 210076 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:33,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:33,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:42,628 INFO L129 PetriNetUnfolder]: 735/5655 cut-off events. [2021-08-13 18:00:42,628 INFO L130 PetriNetUnfolder]: For 1202576/1700718 co-relation queries the response was YES. [2021-08-13 18:00:42,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114391 conditions, 5655 events. 735/5655 cut-off events. For 1202576/1700718 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 82704 event pairs, 0 based on Foata normal form. 477/5935 useless extension candidates. Maximal degree in co-relation 100542. Up to 1466 conditions per place. [2021-08-13 18:00:42,677 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1754 selfloop transitions, 519 changer transitions 112/2406 dead transitions. [2021-08-13 18:00:42,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2406 transitions, 214758 flow [2021-08-13 18:00:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:00:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:00:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:00:42,678 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:00:42,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:00:42,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:00:42,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:42,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:00:42,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:42,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:42,679 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:42,679 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 364 predicate places. [2021-08-13 18:00:42,679 INFO L482 AbstractCegarLoop]: Abstraction has has 415 places, 2406 transitions, 214758 flow [2021-08-13 18:00:42,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:42,679 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:42,679 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:42,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 18:00:42,680 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:42,680 INFO L82 PathProgramCache]: Analyzing trace with hash -551937135, now seen corresponding path program 45 times [2021-08-13 18:00:42,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:42,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294151178] [2021-08-13 18:00:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:42,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:42,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:42,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:42,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:42,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:00:42,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:00:42,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:42,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:42,759 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:42,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:42,782 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 18:00:42,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:42,813 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:00:42,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:00:42,841 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:42,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:42,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:42,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294151178] [2021-08-13 18:00:42,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294151178] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:42,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:42,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:42,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953897802] [2021-08-13 18:00:42,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:42,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:42,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:42,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:42,866 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:42,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 2406 transitions, 214758 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:42,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:42,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:42,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:51,378 INFO L129 PetriNetUnfolder]: 735/5662 cut-off events. [2021-08-13 18:00:51,379 INFO L130 PetriNetUnfolder]: For 1682995/2510146 co-relation queries the response was YES. [2021-08-13 18:00:51,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116753 conditions, 5662 events. 735/5662 cut-off events. For 1682995/2510146 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 82750 event pairs, 0 based on Foata normal form. 675/6141 useless extension candidates. Maximal degree in co-relation 102665. Up to 1465 conditions per place. [2021-08-13 18:00:51,434 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1747 selfloop transitions, 521 changer transitions 116/2405 dead transitions. [2021-08-13 18:00:51,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 2405 transitions, 219436 flow [2021-08-13 18:00:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:00:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:00:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:00:51,437 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:00:51,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:00:51,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:00:51,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:51,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:00:51,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,439 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 372 predicate places. [2021-08-13 18:00:51,439 INFO L482 AbstractCegarLoop]: Abstraction has has 423 places, 2405 transitions, 219436 flow [2021-08-13 18:00:51,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,439 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:51,439 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:51,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 18:00:51,439 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash 72523967, now seen corresponding path program 46 times [2021-08-13 18:00:51,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:51,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94672465] [2021-08-13 18:00:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:51,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:51,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:51,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:51,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:51,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:00:51,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:00:51,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:51,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:00:51,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:00:51,535 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 18:00:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 18:00:51,563 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:00:51,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:00:51,589 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:00:51,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:00:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:51,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:51,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94672465] [2021-08-13 18:00:51,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94672465] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:51,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:51,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:00:51,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041201746] [2021-08-13 18:00:51,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:00:51,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:51,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:00:51,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:00:51,614 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:00:51,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 2405 transitions, 219436 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:51,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:00:51,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:00,112 INFO L129 PetriNetUnfolder]: 735/5711 cut-off events. [2021-08-13 18:01:00,112 INFO L130 PetriNetUnfolder]: For 1031513/1396476 co-relation queries the response was YES. [2021-08-13 18:01:00,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119242 conditions, 5711 events. 735/5711 cut-off events. For 1031513/1396476 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 83733 event pairs, 0 based on Foata normal form. 351/5866 useless extension candidates. Maximal degree in co-relation 104917. Up to 1464 conditions per place. [2021-08-13 18:01:00,166 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1745 selfloop transitions, 519 changer transitions 119/2404 dead transitions. [2021-08-13 18:01:00,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 2404 transitions, 224110 flow [2021-08-13 18:01:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:00,168 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:00,168 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:00,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:00,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:00,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:00,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:00,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:00,169 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:00,169 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 380 predicate places. [2021-08-13 18:01:00,169 INFO L482 AbstractCegarLoop]: Abstraction has has 431 places, 2404 transitions, 224110 flow [2021-08-13 18:01:00,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:00,169 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:00,169 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:00,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 18:01:00,169 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:00,170 INFO L82 PathProgramCache]: Analyzing trace with hash -334321501, now seen corresponding path program 47 times [2021-08-13 18:01:00,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:00,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061336563] [2021-08-13 18:01:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:00,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:00,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:00,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:00,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:00,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:00,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:00,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:00,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:00,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:00,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:00,226 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:01:00,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:01:00,243 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:00,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:00,266 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:00,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:00,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:00,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061336563] [2021-08-13 18:01:00,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061336563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:00,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:00,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:00,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129344360] [2021-08-13 18:01:00,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:00,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:00,286 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:00,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 2404 transitions, 224110 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:00,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:00,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:00,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:08,929 INFO L129 PetriNetUnfolder]: 726/5722 cut-off events. [2021-08-13 18:01:08,930 INFO L130 PetriNetUnfolder]: For 1197266/1639752 co-relation queries the response was YES. [2021-08-13 18:01:08,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122389 conditions, 5722 events. 726/5722 cut-off events. For 1197266/1639752 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 84185 event pairs, 0 based on Foata normal form. 388/5912 useless extension candidates. Maximal degree in co-relation 107319. Up to 1481 conditions per place. [2021-08-13 18:01:08,982 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1756 selfloop transitions, 523 changer transitions 121/2421 dead transitions. [2021-08-13 18:01:08,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 2421 transitions, 230508 flow [2021-08-13 18:01:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:08,983 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:08,983 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:08,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:08,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:08,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:08,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:08,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:08,985 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:08,985 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 388 predicate places. [2021-08-13 18:01:08,985 INFO L482 AbstractCegarLoop]: Abstraction has has 439 places, 2421 transitions, 230508 flow [2021-08-13 18:01:08,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:08,985 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:08,985 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:08,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 18:01:08,985 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 542189355, now seen corresponding path program 48 times [2021-08-13 18:01:08,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:08,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018899259] [2021-08-13 18:01:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:08,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:08,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:08,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:08,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:09,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:09,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:09,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:09,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:09,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:09,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:09,028 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:01:09,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:01:09,046 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:09,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:09,068 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:09,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:09,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:09,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018899259] [2021-08-13 18:01:09,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018899259] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:09,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:09,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:09,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070271225] [2021-08-13 18:01:09,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:09,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:09,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:09,091 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:09,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 2421 transitions, 230508 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:09,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:09,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:09,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:18,201 INFO L129 PetriNetUnfolder]: 726/5708 cut-off events. [2021-08-13 18:01:18,201 INFO L130 PetriNetUnfolder]: For 1252596/1705118 co-relation queries the response was YES. [2021-08-13 18:01:18,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124702 conditions, 5708 events. 726/5708 cut-off events. For 1252596/1705118 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 83826 event pairs, 0 based on Foata normal form. 388/5899 useless extension candidates. Maximal degree in co-relation 109389. Up to 1480 conditions per place. [2021-08-13 18:01:18,261 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1754 selfloop transitions, 520 changer transitions 125/2420 dead transitions. [2021-08-13 18:01:18,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 2420 transitions, 235210 flow [2021-08-13 18:01:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:18,262 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:18,262 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:18,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:18,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:18,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:18,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:18,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:18,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:18,264 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 396 predicate places. [2021-08-13 18:01:18,264 INFO L482 AbstractCegarLoop]: Abstraction has has 447 places, 2420 transitions, 235210 flow [2021-08-13 18:01:18,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:18,264 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:18,264 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:18,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 18:01:18,264 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash -93895497, now seen corresponding path program 49 times [2021-08-13 18:01:18,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:18,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463914576] [2021-08-13 18:01:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:18,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:18,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:18,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:18,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:18,279 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:18,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:18,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:18,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:18,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:18,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:18,309 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:01:18,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:01:18,326 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:18,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:18,349 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:18,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:18,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:18,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463914576] [2021-08-13 18:01:18,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463914576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:18,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:18,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:18,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114640756] [2021-08-13 18:01:18,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:18,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:18,372 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:18,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 2420 transitions, 235210 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:18,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:18,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:18,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:28,230 INFO L129 PetriNetUnfolder]: 699/6027 cut-off events. [2021-08-13 18:01:28,230 INFO L130 PetriNetUnfolder]: For 1237536/1627867 co-relation queries the response was YES. [2021-08-13 18:01:28,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132040 conditions, 6027 events. 699/6027 cut-off events. For 1237536/1627867 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 90629 event pairs, 0 based on Foata normal form. 351/6168 useless extension candidates. Maximal degree in co-relation 114472. Up to 1568 conditions per place. [2021-08-13 18:01:28,284 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1819 selfloop transitions, 541 changer transitions 127/2508 dead transitions. [2021-08-13 18:01:28,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 2508 transitions, 248808 flow [2021-08-13 18:01:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:28,285 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:28,285 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:28,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:28,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:28,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:28,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,287 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,287 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 404 predicate places. [2021-08-13 18:01:28,287 INFO L482 AbstractCegarLoop]: Abstraction has has 455 places, 2508 transitions, 248808 flow [2021-08-13 18:01:28,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,287 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:28,287 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:28,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 18:01:28,287 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash -397772123, now seen corresponding path program 50 times [2021-08-13 18:01:28,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:28,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964887017] [2021-08-13 18:01:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:28,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:28,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:28,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:28,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:28,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:28,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:28,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:28,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:28,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:28,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:28,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:01:28,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:01:28,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:28,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:28,374 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:28,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:28,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:28,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964887017] [2021-08-13 18:01:28,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964887017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:28,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:28,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:28,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304467335] [2021-08-13 18:01:28,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:28,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:28,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:28,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:28,397 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:28,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 2508 transitions, 248808 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:28,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:28,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:38,466 INFO L129 PetriNetUnfolder]: 699/6075 cut-off events. [2021-08-13 18:01:38,466 INFO L130 PetriNetUnfolder]: For 2181428/3107759 co-relation queries the response was YES. [2021-08-13 18:01:38,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134623 conditions, 6075 events. 699/6075 cut-off events. For 2181428/3107759 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 91459 event pairs, 0 based on Foata normal form. 675/6539 useless extension candidates. Maximal degree in co-relation 116778. Up to 1567 conditions per place. [2021-08-13 18:01:38,521 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1817 selfloop transitions, 539 changer transitions 130/2507 dead transitions. [2021-08-13 18:01:38,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 2507 transitions, 253680 flow [2021-08-13 18:01:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:38,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:38,522 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:38,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:38,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:38,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:38,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:38,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:38,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:38,524 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:38,524 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 412 predicate places. [2021-08-13 18:01:38,524 INFO L482 AbstractCegarLoop]: Abstraction has has 463 places, 2507 transitions, 253680 flow [2021-08-13 18:01:38,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:38,524 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:38,524 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:38,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 18:01:38,525 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:38,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1713189061, now seen corresponding path program 51 times [2021-08-13 18:01:38,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:38,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046056567] [2021-08-13 18:01:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:38,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:38,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:38,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:38,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:38,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:38,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:38,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:38,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:38,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:38,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:38,608 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:38,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:38,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:38,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:38,656 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:38,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:38,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:38,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046056567] [2021-08-13 18:01:38,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046056567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:38,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:38,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:38,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618248193] [2021-08-13 18:01:38,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:38,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:38,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:38,683 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:38,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 2507 transitions, 253680 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:38,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:38,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:38,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:48,625 INFO L129 PetriNetUnfolder]: 699/6032 cut-off events. [2021-08-13 18:01:48,626 INFO L130 PetriNetUnfolder]: For 1719265/2302905 co-relation queries the response was YES. [2021-08-13 18:01:48,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136934 conditions, 6032 events. 699/6032 cut-off events. For 1719265/2302905 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 90701 event pairs, 0 based on Foata normal form. 477/6294 useless extension candidates. Maximal degree in co-relation 118814. Up to 1566 conditions per place. [2021-08-13 18:01:48,680 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1817 selfloop transitions, 536 changer transitions 132/2506 dead transitions. [2021-08-13 18:01:48,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 2506 transitions, 258548 flow [2021-08-13 18:01:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:48,693 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:48,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:48,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:48,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:48,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:48,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:48,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:48,695 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:48,695 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 420 predicate places. [2021-08-13 18:01:48,695 INFO L482 AbstractCegarLoop]: Abstraction has has 471 places, 2506 transitions, 258548 flow [2021-08-13 18:01:48,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:48,695 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:48,695 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:48,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 18:01:48,695 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash 970325337, now seen corresponding path program 52 times [2021-08-13 18:01:48,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:48,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575344124] [2021-08-13 18:01:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:48,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:48,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:48,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:48,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:48,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:48,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:48,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:48,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:48,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:48,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:48,737 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:48,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:48,754 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:48,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:48,776 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:48,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:48,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:48,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575344124] [2021-08-13 18:01:48,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575344124] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:48,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:48,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:48,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691403393] [2021-08-13 18:01:48,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:48,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:48,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:48,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:48,797 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:48,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 2506 transitions, 258548 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:48,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:48,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:48,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:59,354 INFO L129 PetriNetUnfolder]: 699/6012 cut-off events. [2021-08-13 18:01:59,354 INFO L130 PetriNetUnfolder]: For 1792518/2388372 co-relation queries the response was YES. [2021-08-13 18:01:59,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139310 conditions, 6012 events. 699/6012 cut-off events. For 1792518/2388372 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 90349 event pairs, 0 based on Foata normal form. 477/6277 useless extension candidates. Maximal degree in co-relation 120917. Up to 1565 conditions per place. [2021-08-13 18:01:59,484 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1814 selfloop transitions, 535 changer transitions 135/2505 dead transitions. [2021-08-13 18:01:59,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 2505 transitions, 263412 flow [2021-08-13 18:01:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:01:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:01:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:01:59,485 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:01:59,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:01:59,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:01:59,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:59,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:01:59,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:59,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:59,486 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:59,486 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 428 predicate places. [2021-08-13 18:01:59,486 INFO L482 AbstractCegarLoop]: Abstraction has has 479 places, 2505 transitions, 263412 flow [2021-08-13 18:01:59,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:59,486 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:59,486 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:59,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 18:01:59,487 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:59,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:59,487 INFO L82 PathProgramCache]: Analyzing trace with hash -820795121, now seen corresponding path program 53 times [2021-08-13 18:01:59,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:59,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040575142] [2021-08-13 18:01:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:59,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:59,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:59,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:59,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:59,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:01:59,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:01:59,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:59,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:59,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:59,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:59,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 18:01:59,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:59,559 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:01:59,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:01:59,582 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:01:59,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:01:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:59,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:59,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040575142] [2021-08-13 18:01:59,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040575142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:59,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:59,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:01:59,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502057096] [2021-08-13 18:01:59,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:01:59,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:01:59,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:01:59,605 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:01:59,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 2505 transitions, 263412 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:59,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:59,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:01:59,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:02:10,137 INFO L129 PetriNetUnfolder]: 699/6023 cut-off events. [2021-08-13 18:02:10,137 INFO L130 PetriNetUnfolder]: For 2096605/2842195 co-relation queries the response was YES. [2021-08-13 18:02:10,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141775 conditions, 6023 events. 699/6023 cut-off events. For 2096605/2842195 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 90599 event pairs, 0 based on Foata normal form. 536/6346 useless extension candidates. Maximal degree in co-relation 123111. Up to 1564 conditions per place. [2021-08-13 18:02:10,195 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1810 selfloop transitions, 536 changer transitions 137/2504 dead transitions. [2021-08-13 18:02:10,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 2504 transitions, 268272 flow [2021-08-13 18:02:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:02:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:02:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:02:10,196 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:02:10,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:02:10,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:02:10,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:02:10,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:02:10,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:10,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:10,202 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:10,202 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 436 predicate places. [2021-08-13 18:02:10,202 INFO L482 AbstractCegarLoop]: Abstraction has has 487 places, 2504 transitions, 268272 flow [2021-08-13 18:02:10,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:10,202 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:02:10,202 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:02:10,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 18:02:10,202 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:02:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:02:10,202 INFO L82 PathProgramCache]: Analyzing trace with hash -757719403, now seen corresponding path program 54 times [2021-08-13 18:02:10,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:02:10,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283067361] [2021-08-13 18:02:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:02:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:02:10,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:10,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:02:10,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:10,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:02:10,216 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:02:10,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:02:10,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:02:10,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:02:10,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:02:10,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:02:10,245 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 18:02:10,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:02:10,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:02:10,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:02:10,295 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:02:10,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:02:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:02:10,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:02:10,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283067361] [2021-08-13 18:02:10,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283067361] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:02:10,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:02:10,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:02:10,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408269655] [2021-08-13 18:02:10,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:02:10,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:02:10,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:02:10,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:02:10,319 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:02:10,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 2504 transitions, 268272 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:10,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:02:10,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:02:10,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:02:21,307 INFO L129 PetriNetUnfolder]: 699/6068 cut-off events. [2021-08-13 18:02:21,307 INFO L130 PetriNetUnfolder]: For 1520523/1953134 co-relation queries the response was YES. [2021-08-13 18:02:21,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144343 conditions, 6068 events. 699/6068 cut-off events. For 1520523/1953134 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 91390 event pairs, 0 based on Foata normal form. 351/6207 useless extension candidates. Maximal degree in co-relation 125410. Up to 1563 conditions per place. [2021-08-13 18:02:21,363 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1808 selfloop transitions, 532 changer transitions 142/2503 dead transitions. [2021-08-13 18:02:21,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 2503 transitions, 273128 flow [2021-08-13 18:02:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:02:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:02:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:02:21,364 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:02:21,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:02:21,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:02:21,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:02:21,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:02:21,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:21,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:21,365 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:21,365 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 444 predicate places. [2021-08-13 18:02:21,365 INFO L482 AbstractCegarLoop]: Abstraction has has 495 places, 2503 transitions, 273128 flow [2021-08-13 18:02:21,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:21,365 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:02:21,366 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:02:21,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 18:02:21,366 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:02:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:02:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash -18628665, now seen corresponding path program 55 times [2021-08-13 18:02:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:02:21,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743752809] [2021-08-13 18:02:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:02:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:02:21,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:21,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:02:21,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:21,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:02:21,379 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:02:21,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:02:21,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:02:21,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:02:21,394 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:02:21,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:02:21,407 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:02:21,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:02:21,423 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:02:21,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:02:21,445 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:02:21,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:02:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:02:21,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:02:21,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743752809] [2021-08-13 18:02:21,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743752809] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:02:21,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:02:21,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:02:21,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671343377] [2021-08-13 18:02:21,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:02:21,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:02:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:02:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:02:21,469 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:02:21,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 2503 transitions, 273128 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:21,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:02:21,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:02:21,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:02:33,973 INFO L129 PetriNetUnfolder]: 678/6846 cut-off events. [2021-08-13 18:02:33,973 INFO L130 PetriNetUnfolder]: For 2387306/3162924 co-relation queries the response was YES. [2021-08-13 18:02:33,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162429 conditions, 6846 events. 678/6846 cut-off events. For 2387306/3162924 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 107222 event pairs, 0 based on Foata normal form. 449/7036 useless extension candidates. Maximal degree in co-relation 138627. Up to 1821 conditions per place. [2021-08-13 18:02:34,030 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 2048 selfloop transitions, 548 changer transitions 144/2761 dead transitions. [2021-08-13 18:02:34,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 2761 transitions, 306988 flow [2021-08-13 18:02:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:02:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:02:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:02:34,031 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:02:34,032 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:02:34,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:02:34,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:02:34,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:02:34,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:34,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:34,033 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:34,033 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 452 predicate places. [2021-08-13 18:02:34,033 INFO L482 AbstractCegarLoop]: Abstraction has has 503 places, 2761 transitions, 306988 flow [2021-08-13 18:02:34,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:34,033 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:02:34,033 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:02:34,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 18:02:34,033 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:02:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:02:34,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2140285087, now seen corresponding path program 56 times [2021-08-13 18:02:34,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:02:34,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204184217] [2021-08-13 18:02:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:02:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:02:34,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:34,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:02:34,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:34,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:02:34,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:02:34,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:02:34,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:02:34,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:02:34,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:02:34,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:02:34,075 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:02:34,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:02:34,213 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-08-13 18:02:34,214 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:02:34,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:02:34,236 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:02:34,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:02:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:02:34,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:02:34,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204184217] [2021-08-13 18:02:34,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204184217] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:02:34,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:02:34,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:02:34,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906460198] [2021-08-13 18:02:34,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:02:34,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:02:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:02:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:02:34,261 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:02:34,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 2761 transitions, 306988 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:34,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:02:34,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:02:34,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:02:49,943 INFO L129 PetriNetUnfolder]: 654/7077 cut-off events. [2021-08-13 18:02:49,943 INFO L130 PetriNetUnfolder]: For 2533703/3325699 co-relation queries the response was YES. [2021-08-13 18:02:49,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169937 conditions, 7077 events. 654/7077 cut-off events. For 2533703/3325699 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 112216 event pairs, 0 based on Foata normal form. 449/7255 useless extension candidates. Maximal degree in co-relation 143752. Up to 1899 conditions per place. [2021-08-13 18:02:50,002 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 2090 selfloop transitions, 582 changer transitions 146/2839 dead transitions. [2021-08-13 18:02:50,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 2839 transitions, 321360 flow [2021-08-13 18:02:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:02:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:02:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 18:02:50,003 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 18:02:50,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 18:02:50,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 18:02:50,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:02:50,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 18:02:50,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:50,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:50,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:50,005 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 460 predicate places. [2021-08-13 18:02:50,005 INFO L482 AbstractCegarLoop]: Abstraction has has 511 places, 2839 transitions, 321360 flow [2021-08-13 18:02:50,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:50,005 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:02:50,005 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:02:50,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 18:02:50,005 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:02:50,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:02:50,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1749785645, now seen corresponding path program 57 times [2021-08-13 18:02:50,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:02:50,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141678471] [2021-08-13 18:02:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:02:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:02:50,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:50,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:02:50,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:02:50,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:02:50,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 18:02:50,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 18:02:50,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:02:50,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:02:50,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:02:50,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:02:50,051 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 18:02:50,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 18:02:50,082 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 18:02:50,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 18:02:50,105 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 18:02:50,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 18:02:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:02:50,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:02:50,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141678471] [2021-08-13 18:02:50,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141678471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:02:50,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:02:50,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:02:50,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750475482] [2021-08-13 18:02:50,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 18:02:50,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:02:50,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 18:02:50,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 18:02:50,130 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 18:02:50,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 2839 transitions, 321360 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:02:50,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:02:50,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 18:02:50,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand