/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_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:54:05,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:54:05,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:54:05,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 17:54:05,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:54:05,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:54:05,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:54:05,328 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 17:54:05,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:54:05,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:54:05,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:54:05,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:54:05,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:54:05,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:54:05,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:54:05,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:54:05,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:54:05,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:54:05,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:54:05,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:54:05,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:54:05,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:54:05,611 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:54:05,613 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:54:05,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl [2021-08-13 17:54:05,613 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl' [2021-08-13 17:54:05,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:54:05,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:54:05,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:54:05,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:54:05,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:54:05,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:54:05,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:54:05,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:54:05,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:54:05,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/1) ... [2021-08-13 17:54:05,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:54:05,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:54:05,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:54:05,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:54:05,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (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 17:54:05,725 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 17:54:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 17:54:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 17:54:05,726 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 17:54:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 17:54:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 17:54:05,726 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 17:54:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 17:54:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 17:54:05,726 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 17:54:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 17:54:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 17:54:05,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 17:54:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 17:54:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 17:54:05,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-08-13 17:54:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-08-13 17:54:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-08-13 17:54:05,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:54:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:54:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:54:05,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-13 17:54:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-13 17:54:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-13 17:54:05,728 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-08-13 17:54:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-08-13 17:54:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-08-13 17:54:05,728 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-08-13 17:54:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-08-13 17:54:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-08-13 17:54:05,728 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-08-13 17:54:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-08-13 17:54:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-08-13 17:54:05,729 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 17:54:05,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:54:05,860 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:54:05,861 INFO L202 PluginConnector]: Adding new model example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:54:05 BoogieIcfgContainer [2021-08-13 17:54:05,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:54:05,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:54:05,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:54:05,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:54:05,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:54:05" (1/2) ... [2021-08-13 17:54:05,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a188266 and model type example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:54:05, skipping insertion in model container [2021-08-13 17:54:05,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:54:05" (2/2) ... [2021-08-13 17:54:05,866 INFO L111 eAbstractionObserver]: Analyzing ICFG example_10.bpl [2021-08-13 17:54:05,875 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:54:05,876 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:54:05,876 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:54:06,045 INFO L149 ThreadInstanceAdder]: Constructed 100 joinOtherThreadTransitions. [2021-08-13 17:54:06,060 INFO L255 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-13 17:54:06,089 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:54:06,089 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:54:06,089 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:54:06,089 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:54:06,089 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:54:06,089 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:54:06,089 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:54:06,089 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:54:06,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 143 transitions, 636 flow [2021-08-13 17:54:06,507 INFO L129 PetriNetUnfolder]: 4097/5153 cut-off events. [2021-08-13 17:54:06,508 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-08-13 17:54:06,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 5153 events. 4097/5153 cut-off events. For 5120/5120 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20936 event pairs, 0 based on Foata normal form. 0/5152 useless extension candidates. Maximal degree in co-relation 4655. Up to 1260 conditions per place. [2021-08-13 17:54:06,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 143 transitions, 636 flow [2021-08-13 17:54:06,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 131 transitions, 592 flow [2021-08-13 17:54:06,965 INFO L129 PetriNetUnfolder]: 4097/5150 cut-off events. [2021-08-13 17:54:06,965 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-08-13 17:54:06,965 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:06,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:06,966 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1822784707, now seen corresponding path program 1 times [2021-08-13 17:54:06,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:06,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162153444] [2021-08-13 17:54:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:07,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:07,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:07,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:07,074 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 17:54:07,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:07,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162153444] [2021-08-13 17:54:07,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162153444] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:07,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:07,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:07,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179561428] [2021-08-13 17:54:07,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:07,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:07,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:07,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:07,090 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:07,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 131 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:07,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:07,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:07,441 INFO L129 PetriNetUnfolder]: 3764/4772 cut-off events. [2021-08-13 17:54:07,441 INFO L130 PetriNetUnfolder]: For 5812/5812 co-relation queries the response was YES. [2021-08-13 17:54:07,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10012 conditions, 4772 events. 3764/4772 cut-off events. For 5812/5812 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 21578 event pairs, 0 based on Foata normal form. 46/4818 useless extension candidates. Maximal degree in co-relation 4728. Up to 1260 conditions per place. [2021-08-13 17:54:07,506 INFO L132 encePairwiseOnDemand]: 139/143 looper letters, 7 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2021-08-13 17:54:07,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 128 transitions, 593 flow [2021-08-13 17:54:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:07,521 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:07,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:07,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:07,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:07,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:07,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,539 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2021-08-13 17:54:07,539 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 128 transitions, 593 flow [2021-08-13 17:54:07,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,539 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:07,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:07,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:54:07,540 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:07,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1398315923, now seen corresponding path program 1 times [2021-08-13 17:54:07,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:07,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399165299] [2021-08-13 17:54:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:07,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:07,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:07,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:07,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:07,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399165299] [2021-08-13 17:54:07,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399165299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:07,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:07,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:07,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137126005] [2021-08-13 17:54:07,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:07,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:07,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:07,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:07,590 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:07,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 128 transitions, 593 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:07,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:07,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:07,875 INFO L129 PetriNetUnfolder]: 3028/3915 cut-off events. [2021-08-13 17:54:07,875 INFO L130 PetriNetUnfolder]: For 5693/5693 co-relation queries the response was YES. [2021-08-13 17:54:07,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8598 conditions, 3915 events. 3028/3915 cut-off events. For 5693/5693 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 17946 event pairs, 0 based on Foata normal form. 93/4008 useless extension candidates. Maximal degree in co-relation 4413. Up to 1260 conditions per place. [2021-08-13 17:54:07,905 INFO L132 encePairwiseOnDemand]: 138/143 looper letters, 6 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2021-08-13 17:54:07,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 587 flow [2021-08-13 17:54:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:07,907 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:07,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:07,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:07,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:07,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:07,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,911 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2021-08-13 17:54:07,911 INFO L482 AbstractCegarLoop]: Abstraction has has 76 places, 124 transitions, 587 flow [2021-08-13 17:54:07,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,911 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:07,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:07,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:54:07,912 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1532640859, now seen corresponding path program 1 times [2021-08-13 17:54:07,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:07,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272666630] [2021-08-13 17:54:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:07,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:07,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:07,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:07,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:07,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:07,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272666630] [2021-08-13 17:54:07,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272666630] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:07,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:07,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:07,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008880382] [2021-08-13 17:54:07,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:07,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:07,958 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:07,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 124 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:07,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:07,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:07,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,176 INFO L129 PetriNetUnfolder]: 3021/3907 cut-off events. [2021-08-13 17:54:08,176 INFO L130 PetriNetUnfolder]: For 6188/6188 co-relation queries the response was YES. [2021-08-13 17:54:08,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8973 conditions, 3907 events. 3021/3907 cut-off events. For 6188/6188 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 17824 event pairs, 0 based on Foata normal form. 1/3908 useless extension candidates. Maximal degree in co-relation 4633. Up to 1260 conditions per place. [2021-08-13 17:54:08,289 INFO L132 encePairwiseOnDemand]: 141/143 looper letters, 9 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2021-08-13 17:54:08,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 123 transitions, 602 flow [2021-08-13 17:54:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:08,290 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:08,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,293 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2021-08-13 17:54:08,293 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 123 transitions, 602 flow [2021-08-13 17:54:08,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,294 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:54:08,294 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,294 INFO L82 PathProgramCache]: Analyzing trace with hash 449409119, now seen corresponding path program 1 times [2021-08-13 17:54:08,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789530033] [2021-08-13 17:54:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:08,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,332 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 17:54:08,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:08,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789530033] [2021-08-13 17:54:08,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789530033] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:08,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:08,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:08,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334780936] [2021-08-13 17:54:08,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:08,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:08,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:08,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:08,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:08,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 123 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:08,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:08,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,428 INFO L129 PetriNetUnfolder]: 1202/1667 cut-off events. [2021-08-13 17:54:08,428 INFO L130 PetriNetUnfolder]: For 3805/3805 co-relation queries the response was YES. [2021-08-13 17:54:08,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 1667 events. 1202/1667 cut-off events. For 3805/3805 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7299 event pairs, 0 based on Foata normal form. 343/2010 useless extension candidates. Maximal degree in co-relation 3539. Up to 504 conditions per place. [2021-08-13 17:54:08,448 INFO L132 encePairwiseOnDemand]: 135/143 looper letters, 3 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2021-08-13 17:54:08,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 575 flow [2021-08-13 17:54:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:08,449 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:08,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,452 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2021-08-13 17:54:08,452 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 116 transitions, 575 flow [2021-08-13 17:54:08,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,452 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:54:08,453 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1402045647, now seen corresponding path program 1 times [2021-08-13 17:54:08,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210298605] [2021-08-13 17:54:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:08,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,484 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 17:54:08,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:08,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210298605] [2021-08-13 17:54:08,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210298605] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:08,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:08,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:08,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136423341] [2021-08-13 17:54:08,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:08,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:08,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:08,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:08,486 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:08,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 116 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:08,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:08,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,535 INFO L129 PetriNetUnfolder]: 519/801 cut-off events. [2021-08-13 17:54:08,536 INFO L130 PetriNetUnfolder]: For 1851/1851 co-relation queries the response was YES. [2021-08-13 17:54:08,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 801 events. 519/801 cut-off events. For 1851/1851 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3284 event pairs, 0 based on Foata normal form. 132/933 useless extension candidates. Maximal degree in co-relation 1570. Up to 168 conditions per place. [2021-08-13 17:54:08,542 INFO L132 encePairwiseOnDemand]: 136/143 looper letters, 4 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2021-08-13 17:54:08,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 110 transitions, 555 flow [2021-08-13 17:54:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:08,543 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:08,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,545 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2021-08-13 17:54:08,545 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 110 transitions, 555 flow [2021-08-13 17:54:08,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,546 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:54:08,546 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2089823503, now seen corresponding path program 1 times [2021-08-13 17:54:08,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091809650] [2021-08-13 17:54:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:08,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:08,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:08,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091809650] [2021-08-13 17:54:08,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091809650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:08,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:08,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:08,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245468521] [2021-08-13 17:54:08,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:08,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:08,562 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:08,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 110 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:08,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:08,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,613 INFO L129 PetriNetUnfolder]: 495/771 cut-off events. [2021-08-13 17:54:08,613 INFO L130 PetriNetUnfolder]: For 1593/1593 co-relation queries the response was YES. [2021-08-13 17:54:08,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 771 events. 495/771 cut-off events. For 1593/1593 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3279 event pairs, 0 based on Foata normal form. 5/776 useless extension candidates. Maximal degree in co-relation 1577. Up to 168 conditions per place. [2021-08-13 17:54:08,619 INFO L132 encePairwiseOnDemand]: 140/143 looper letters, 8 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2021-08-13 17:54:08,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 563 flow [2021-08-13 17:54:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:08,621 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:08,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,623 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2021-08-13 17:54:08,623 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 108 transitions, 563 flow [2021-08-13 17:54:08,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,624 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 17:54:08,624 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2049404725, now seen corresponding path program 1 times [2021-08-13 17:54:08,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059795691] [2021-08-13 17:54:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:08,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:08,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:08,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059795691] [2021-08-13 17:54:08,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059795691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:08,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:08,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:08,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083442806] [2021-08-13 17:54:08,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:08,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:08,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:08,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:08,639 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:08,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 108 transitions, 563 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:08,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:08,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,726 INFO L129 PetriNetUnfolder]: 285/491 cut-off events. [2021-08-13 17:54:08,726 INFO L130 PetriNetUnfolder]: For 1216/1216 co-relation queries the response was YES. [2021-08-13 17:54:08,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 491 events. 285/491 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2042 event pairs, 0 based on Foata normal form. 35/526 useless extension candidates. Maximal degree in co-relation 944. Up to 108 conditions per place. [2021-08-13 17:54:08,729 INFO L132 encePairwiseOnDemand]: 137/143 looper letters, 5 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2021-08-13 17:54:08,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 550 flow [2021-08-13 17:54:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:08,731 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:08,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,733 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2021-08-13 17:54:08,733 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 103 transitions, 550 flow [2021-08-13 17:54:08,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,734 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 17:54:08,734 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1211050703, now seen corresponding path program 1 times [2021-08-13 17:54:08,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316575534] [2021-08-13 17:54:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:08,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,759 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 17:54:08,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:08,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316575534] [2021-08-13 17:54:08,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316575534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:08,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:08,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:08,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9476794] [2021-08-13 17:54:08,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:08,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:08,761 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:08,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 103 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:08,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:08,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,781 INFO L129 PetriNetUnfolder]: 36/113 cut-off events. [2021-08-13 17:54:08,781 INFO L130 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2021-08-13 17:54:08,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 113 events. 36/113 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 0 based on Foata normal form. 45/158 useless extension candidates. Maximal degree in co-relation 245. Up to 16 conditions per place. [2021-08-13 17:54:08,782 INFO L132 encePairwiseOnDemand]: 133/143 looper letters, 1 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2021-08-13 17:54:08,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 450 flow [2021-08-13 17:54:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2021-08-13 17:54:08,783 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-08-13 17:54:08,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2021-08-13 17:54:08,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,786 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2021-08-13 17:54:08,786 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 450 flow [2021-08-13 17:54:08,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,786 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 17:54:08,786 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1937761811, now seen corresponding path program 1 times [2021-08-13 17:54:08,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695340072] [2021-08-13 17:54:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:08,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:08,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:08,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695340072] [2021-08-13 17:54:08,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695340072] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:08,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:08,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:54:08,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543466459] [2021-08-13 17:54:08,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:54:08,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:08,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:54:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:54:08,818 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 143 [2021-08-13 17:54:08,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:08,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 143 [2021-08-13 17:54:08,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:08,831 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-08-13 17:54:08,831 INFO L130 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2021-08-13 17:54:08,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 41 events. 0/41 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 17:54:08,831 INFO L132 encePairwiseOnDemand]: 134/143 looper letters, 1 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2021-08-13 17:54:08,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 41 transitions, 178 flow [2021-08-13 17:54:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:54:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:54:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2021-08-13 17:54:08,833 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9463869463869464 [2021-08-13 17:54:08,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2021-08-13 17:54:08,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2021-08-13 17:54:08,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:08,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2021-08-13 17:54:08,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,835 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2021-08-13 17:54:08,835 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 41 transitions, 178 flow [2021-08-13 17:54:08,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:08,835 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:08,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:08,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 17:54:08,835 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:08,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1007285011, now seen corresponding path program 1 times [2021-08-13 17:54:08,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:08,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478789141] [2021-08-13 17:54:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:08,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:08,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:08,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:08,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:08,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:54:08,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:54:08,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:54:08,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:54:09,009 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:54:09,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:54:09,040 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:54:09,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:54:09,072 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 17:54:09,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 17:54:09,111 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 17:54:09,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 17:54:09,154 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-08-13 17:54:09,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-08-13 17:54:09,215 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:54:09,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:54:09,256 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 17:54:09,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:09,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478789141] [2021-08-13 17:54:09,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478789141] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:09,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:09,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:54:09,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823285268] [2021-08-13 17:54:09,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:54:09,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:54:09,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:54:09,258 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:54:09,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 41 transitions, 178 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:09,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:09,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:54:09,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:10,004 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-08-13 17:54:10,106 INFO L129 PetriNetUnfolder]: 5379/9453 cut-off events. [2021-08-13 17:54:10,106 INFO L130 PetriNetUnfolder]: For 2696/2696 co-relation queries the response was YES. [2021-08-13 17:54:10,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18262 conditions, 9453 events. 5379/9453 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 77218 event pairs, 1793 based on Foata normal form. 1/9214 useless extension candidates. Maximal degree in co-relation 18154. Up to 2561 conditions per place. [2021-08-13 17:54:10,182 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 54 selfloop transitions, 9 changer transitions 1/94 dead transitions. [2021-08-13 17:54:10,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 412 flow [2021-08-13 17:54:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 17:54:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 17:54:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-08-13 17:54:10,185 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.953962703962704 [2021-08-13 17:54:10,185 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-08-13 17:54:10,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-08-13 17:54:10,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:10,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-08-13 17:54:10,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:10,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:10,191 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:10,191 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2021-08-13 17:54:10,191 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 412 flow [2021-08-13 17:54:10,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:10,192 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:10,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:10,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 17:54:10,192 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1385030559, now seen corresponding path program 2 times [2021-08-13 17:54:10,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:10,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136790837] [2021-08-13 17:54:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:10,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:10,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:10,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:10,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:10,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:10,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:10,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:54:10,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:54:10,298 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:54:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:54:10,318 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:54:10,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:54:10,340 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:54:10,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:54:10,367 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 17:54:10,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 17:54:10,400 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-08-13 17:54:10,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-08-13 17:54:10,443 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-08-13 17:54:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-08-13 17:54:10,488 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:54:10,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:54:10,540 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 17:54:10,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:10,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136790837] [2021-08-13 17:54:10,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136790837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:10,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:10,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:54:10,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864726453] [2021-08-13 17:54:10,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:54:10,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:10,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:54:10,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:54:10,543 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:54:10,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 412 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:10,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:10,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:54:10,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:11,673 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-08-13 17:54:11,862 INFO L129 PetriNetUnfolder]: 7049/13842 cut-off events. [2021-08-13 17:54:11,862 INFO L130 PetriNetUnfolder]: For 5888/19354 co-relation queries the response was YES. [2021-08-13 17:54:11,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36567 conditions, 13842 events. 7049/13842 cut-off events. For 5888/19354 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 128074 event pairs, 769 based on Foata normal form. 1/13542 useless extension candidates. Maximal degree in co-relation 36314. Up to 3529 conditions per place. [2021-08-13 17:54:12,005 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 202 selfloop transitions, 31 changer transitions 4/267 dead transitions. [2021-08-13 17:54:12,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 267 transitions, 1578 flow [2021-08-13 17:54:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 17:54:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 17:54:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-08-13 17:54:12,009 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.953962703962704 [2021-08-13 17:54:12,009 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-08-13 17:54:12,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-08-13 17:54:12,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:12,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-08-13 17:54:12,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:12,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:12,014 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:12,014 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 40 predicate places. [2021-08-13 17:54:12,014 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 267 transitions, 1578 flow [2021-08-13 17:54:12,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:12,015 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:12,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:12,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:54:12,015 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:12,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1167173439, now seen corresponding path program 3 times [2021-08-13 17:54:12,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:12,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864424158] [2021-08-13 17:54:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:12,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:12,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:12,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:12,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:12,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:54:12,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:54:12,090 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:54:12,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:54:12,106 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:54:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:54:12,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:54:12,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:54:12,153 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 17:54:12,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 17:54:12,277 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-08-13 17:54:12,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-08-13 17:54:12,338 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-08-13 17:54:12,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-08-13 17:54:12,393 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:54:12,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:54:12,432 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 17:54:12,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:12,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864424158] [2021-08-13 17:54:12,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864424158] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:12,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:12,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:54:12,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625060641] [2021-08-13 17:54:12,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:54:12,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:12,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:54:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:54:12,435 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:54:12,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 267 transitions, 1578 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:12,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:12,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:54:12,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:14,157 INFO L129 PetriNetUnfolder]: 9367/19779 cut-off events. [2021-08-13 17:54:14,157 INFO L130 PetriNetUnfolder]: For 10315/57249 co-relation queries the response was YES. [2021-08-13 17:54:14,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64845 conditions, 19779 events. 9367/19779 cut-off events. For 10315/57249 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 205630 event pairs, 321 based on Foata normal form. 1/19398 useless extension candidates. Maximal degree in co-relation 64277. Up to 4959 conditions per place. [2021-08-13 17:54:14,476 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 594 selfloop transitions, 101 changer transitions 6/731 dead transitions. [2021-08-13 17:54:14,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 731 transitions, 5764 flow [2021-08-13 17:54:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 17:54:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 17:54:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-08-13 17:54:14,479 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.953962703962704 [2021-08-13 17:54:14,479 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-08-13 17:54:14,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-08-13 17:54:14,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:14,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-08-13 17:54:14,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:14,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:14,484 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:14,485 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 51 predicate places. [2021-08-13 17:54:14,485 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 731 transitions, 5764 flow [2021-08-13 17:54:14,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:14,488 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:14,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:14,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:54:14,488 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:14,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1006942671, now seen corresponding path program 4 times [2021-08-13 17:54:14,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:14,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977509486] [2021-08-13 17:54:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:14,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:14,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:14,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:14,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:14,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:14,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:14,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:54:14,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:54:14,589 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:54:14,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:54:14,604 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:54:14,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:54:14,623 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 17:54:14,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 17:54:14,650 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-13 17:54:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-13 17:54:14,680 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 17:54:14,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 17:54:14,717 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-08-13 17:54:14,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-08-13 17:54:14,767 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:54:14,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:54:14,811 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 17:54:14,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:14,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977509486] [2021-08-13 17:54:14,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977509486] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:14,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:14,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:54:14,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031336040] [2021-08-13 17:54:14,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:54:14,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:54:14,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:54:14,814 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:54:14,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 731 transitions, 5764 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:14,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:14,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:54:14,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:18,085 INFO L129 PetriNetUnfolder]: 12568/27382 cut-off events. [2021-08-13 17:54:18,085 INFO L130 PetriNetUnfolder]: For 14760/96536 co-relation queries the response was YES. [2021-08-13 17:54:18,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107015 conditions, 27382 events. 12568/27382 cut-off events. For 14760/96536 co-relation queries the response was YES. Maximal size of possible extension queue 2702. Compared 306865 event pairs, 129 based on Foata normal form. 7/26887 useless extension candidates. Maximal degree in co-relation 105812. Up to 7018 conditions per place. [2021-08-13 17:54:18,377 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 1583 selfloop transitions, 291 changer transitions 8/1912 dead transitions. [2021-08-13 17:54:18,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 1912 transitions, 18976 flow [2021-08-13 17:54:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 17:54:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 17:54:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-08-13 17:54:18,381 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.953962703962704 [2021-08-13 17:54:18,381 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-08-13 17:54:18,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-08-13 17:54:18,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:18,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-08-13 17:54:18,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:18,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:18,386 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:18,386 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 62 predicate places. [2021-08-13 17:54:18,387 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 1912 transitions, 18976 flow [2021-08-13 17:54:18,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:18,387 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:18,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:18,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 17:54:18,387 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1946575419, now seen corresponding path program 5 times [2021-08-13 17:54:18,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:18,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052843839] [2021-08-13 17:54:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:18,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:18,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:18,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:18,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:18,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:18,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:18,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:54:18,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:54:18,457 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:54:18,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:54:18,472 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:54:18,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:54:18,494 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:54:18,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:54:18,526 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 17:54:18,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 17:54:18,570 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 17:54:18,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 17:54:18,616 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-08-13 17:54:18,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-08-13 17:54:18,662 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:54:18,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:54:18,698 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 17:54:18,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:18,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052843839] [2021-08-13 17:54:18,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052843839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:18,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:18,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:54:18,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185741846] [2021-08-13 17:54:18,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:54:18,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:18,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:54:18,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:54:18,700 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:54:18,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 1912 transitions, 18976 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:18,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:18,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:54:18,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:30,201 INFO L129 PetriNetUnfolder]: 16963/38646 cut-off events. [2021-08-13 17:54:30,201 INFO L130 PetriNetUnfolder]: For 23844/216470 co-relation queries the response was YES. [2021-08-13 17:54:30,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174697 conditions, 38646 events. 16963/38646 cut-off events. For 23844/216470 co-relation queries the response was YES. Maximal size of possible extension queue 4008. Compared 471689 event pairs, 49 based on Foata normal form. 57/37862 useless extension candidates. Maximal degree in co-relation 172287. Up to 9992 conditions per place. [2021-08-13 17:54:30,777 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 3977 selfloop transitions, 757 changer transitions 10/4774 dead transitions. [2021-08-13 17:54:30,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 4774 transitions, 57084 flow [2021-08-13 17:54:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 17:54:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 17:54:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-08-13 17:54:30,780 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.953962703962704 [2021-08-13 17:54:30,780 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-08-13 17:54:30,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-08-13 17:54:30,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:30,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-08-13 17:54:30,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:30,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:30,785 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:30,786 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 73 predicate places. [2021-08-13 17:54:30,786 INFO L482 AbstractCegarLoop]: Abstraction has has 145 places, 4774 transitions, 57084 flow [2021-08-13 17:54:30,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:30,786 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:30,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:30,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 17:54:30,786 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:54:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 224027903, now seen corresponding path program 6 times [2021-08-13 17:54:30,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:30,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718355703] [2021-08-13 17:54:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:30,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:30,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:54:30,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:30,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:30,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:30,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:54:30,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:54:30,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:54:30,834 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:54:30,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:54:30,846 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:54:30,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:54:30,869 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:54:30,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:54:30,892 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 17:54:30,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 17:54:30,930 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-08-13 17:54:30,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-13 17:54:30,969 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-08-13 17:54:31,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-08-13 17:54:31,141 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:54:31,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:54:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:31,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:31,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718355703] [2021-08-13 17:54:31,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718355703] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:54:31,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:54:31,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:54:31,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958255803] [2021-08-13 17:54:31,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:54:31,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:31,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:54:31,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:54:31,191 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:54:31,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 4774 transitions, 57084 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:54:31,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:31,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:54:31,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:55:46,688 INFO L129 PetriNetUnfolder]: 22951/57950 cut-off events. [2021-08-13 17:55:46,688 INFO L130 PetriNetUnfolder]: For 50906/496135 co-relation queries the response was YES. [2021-08-13 17:55:47,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289579 conditions, 57950 events. 22951/57950 cut-off events. For 50906/496135 co-relation queries the response was YES. Maximal size of possible extension queue 5943. Compared 802803 event pairs, 17 based on Foata normal form. 138/56940 useless extension candidates. Maximal degree in co-relation 285006. Up to 14339 conditions per place. [2021-08-13 17:55:47,758 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 9463 selfloop transitions, 1821 changer transitions 12/11326 dead transitions. [2021-08-13 17:55:47,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 11326 transitions, 158300 flow [2021-08-13 17:55:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 17:55:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 17:55:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-08-13 17:55:47,761 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.953962703962704 [2021-08-13 17:55:47,761 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-08-13 17:55:47,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-08-13 17:55:47,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:55:47,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-08-13 17:55:47,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:55:47,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:55:47,766 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:55:47,766 INFO L348 CegarLoopForPetriNet]: 72 programPoint places, 84 predicate places. [2021-08-13 17:55:47,767 INFO L482 AbstractCegarLoop]: Abstraction has has 156 places, 11326 transitions, 158300 flow [2021-08-13 17:55:47,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:55:47,767 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:55:47,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:55:47,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 17:55:47,767 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:55:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:55:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1216309547, now seen corresponding path program 7 times [2021-08-13 17:55:47,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:55:47,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993676117] [2021-08-13 17:55:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:55:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:55:47,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:47,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:55:47,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:47,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:55:47,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:55:47,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:55:47,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:55:47,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:55:47,817 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:55:47,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:55:47,831 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:55:47,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:55:47,850 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 17:55:47,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 17:55:47,875 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-08-13 17:55:47,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-08-13 17:55:47,908 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-13 17:55:47,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-13 17:55:47,945 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-08-13 17:55:47,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-08-13 17:55:48,004 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-08-13 17:55:48,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-08-13 17:55:48,040 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 17:55:48,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:55:48,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993676117] [2021-08-13 17:55:48,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993676117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:55:48,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:55:48,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 17:55:48,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060330687] [2021-08-13 17:55:48,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:55:48,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:55:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:55:48,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:55:48,042 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 143 [2021-08-13 17:55:48,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 11326 transitions, 158300 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:55:48,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:55:48,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 143 [2021-08-13 17:55:48,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 18:03:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:03:30,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 18:03:30,074 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 18:03:30,076 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 18:03:30,077 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 18:03:30,077 INFO L202 PluginConnector]: Adding new model example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 06:03:30 BasicIcfg [2021-08-13 18:03:30,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 18:03:30,078 INFO L168 Benchmark]: Toolchain (without parser) took 564438.00 ms. Allocated memory was 196.1 MB in the beginning and 5.5 GB in the end (delta: 5.3 GB). Free memory was 177.8 MB in the beginning and 3.3 GB in the end (delta: -3.1 GB). Peak memory consumption was 5.1 GB. Max. memory is 8.0 GB. [2021-08-13 18:03:30,078 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 196.1 MB. Free memory is still 178.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 18:03:30,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 196.1 MB. Free memory was 177.8 MB in the beginning and 176.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 18:03:30,078 INFO L168 Benchmark]: Boogie Preprocessor took 9.79 ms. Allocated memory is still 196.1 MB. Free memory was 176.1 MB in the beginning and 175.3 MB in the end (delta: 834.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 18:03:30,078 INFO L168 Benchmark]: RCFGBuilder took 186.59 ms. Allocated memory is still 196.1 MB. Free memory was 175.1 MB in the beginning and 162.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-13 18:03:30,078 INFO L168 Benchmark]: TraceAbstraction took 564214.70 ms. Allocated memory was 196.1 MB in the beginning and 5.5 GB in the end (delta: 5.3 GB). Free memory was 162.0 MB in the beginning and 3.3 GB in the end (delta: -3.1 GB). Peak memory consumption was 5.1 GB. Max. memory is 8.0 GB. [2021-08-13 18:03:30,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 196.1 MB. Free memory is still 178.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 196.1 MB. Free memory was 177.8 MB in the beginning and 176.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.79 ms. Allocated memory is still 196.1 MB. Free memory was 176.1 MB in the beginning and 175.3 MB in the end (delta: 834.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 186.59 ms. Allocated memory is still 196.1 MB. Free memory was 175.1 MB in the beginning and 162.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 564214.70 ms. Allocated memory was 196.1 MB in the beginning and 5.5 GB in the end (delta: 5.3 GB). Free memory was 162.0 MB in the beginning and 3.3 GB in the end (delta: -3.1 GB). Peak memory consumption was 5.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 131/143 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 350518 conditions, 53185 events (28906/53184 cut-off events. For 22915/1420555 co-relation queries the response was YES. Maximal size of possible extension queue 8523. Compared 643204 event pairs, 5 based on Foata normal form. 895/60293 useless extension candidates. Maximal degree in co-relation 350480. Up to 17328 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 21 procedures, 94 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 361.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 563990.3ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 560218.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 513.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 393 SDtfs, 412 SDslu, 427 SDs, 0 SdLazy, 802 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 636.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1960.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=158300occurred in iteration=15, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.3ms SsaConstructionTime, 100.5ms SatisfiabilityAnalysisTime, 2603.5ms InterpolantComputationTime, 656 NumberOfCodeBlocks, 656 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 12920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown