/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_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:57:21,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:57:21,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:57:21,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 17:57:21,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:57:21,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:57:21,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:57:21,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 17:57:21,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:57:21,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:57:21,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:57:21,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:57:21,935 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:57:21,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:57:21,935 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:57:21,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:57:21,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:57:21,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:57:21,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:57:21,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:57:21,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:57:21,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:57:21,938 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:57:21,938 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:57:21,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:57:21,938 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:57:22,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:57:22,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:57:22,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:57:22,274 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:57:22,275 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:57:22,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-08-13 17:57:22,276 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-08-13 17:57:22,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:57:22,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:57:22,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:22,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:57:22,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:57:22,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:22,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:57:22,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:57:22,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:57:22,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... [2021-08-13 17:57:22,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:57:22,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:57:22,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:57:22,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:57:22,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:57:22,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 17:57:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 17:57:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 17:57:22,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 17:57:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 17:57:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 17:57:22,387 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 17:57:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 17:57:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 17:57:22,387 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 17:57:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 17:57:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 17:57:22,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 17:57:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 17:57:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 17:57:22,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:57:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:57:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:57:22,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-13 17:57:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-13 17:57:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-13 17:57:22,389 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 17:57:22,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:57:22,523 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:57:22,524 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:22 BoogieIcfgContainer [2021-08-13 17:57:22,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:57:22,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:57:22,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:57:22,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:57:22,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:22" (1/2) ... [2021-08-13 17:57:22,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d12bfd and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:57:22, skipping insertion in model container [2021-08-13 17:57:22,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:22" (2/2) ... [2021-08-13 17:57:22,530 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-08-13 17:57:22,534 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:57:22,534 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:57:22,535 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:57:22,588 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-08-13 17:57:22,603 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-13 17:57:22,617 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:57:22,618 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:57:22,618 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:57:22,618 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:57:22,618 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:57:22,618 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:57:22,618 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:57:22,618 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:57:22,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions, 264 flow [2021-08-13 17:57:22,712 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2021-08-13 17:57:22,712 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-08-13 17:57:22,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 763 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2021-08-13 17:57:22,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 63 transitions, 264 flow [2021-08-13 17:57:22,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 55 transitions, 236 flow [2021-08-13 17:57:22,783 INFO L129 PetriNetUnfolder]: 129/210 cut-off events. [2021-08-13 17:57:22,784 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-08-13 17:57:22,784 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:22,785 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] [2021-08-13 17:57:22,785 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2015486039, now seen corresponding path program 1 times [2021-08-13 17:57:22,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:22,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100759414] [2021-08-13 17:57:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:22,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:22,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:22,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100759414] [2021-08-13 17:57:22,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100759414] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:22,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:22,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:22,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049671347] [2021-08-13 17:57:22,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:22,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:22,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:22,894 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 17:57:22,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:22,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 17:57:22,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:22,923 INFO L129 PetriNetUnfolder]: 49/100 cut-off events. [2021-08-13 17:57:22,923 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2021-08-13 17:57:22,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 100 events. 49/100 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 320 event pairs, 0 based on Foata normal form. 31/131 useless extension candidates. Maximal degree in co-relation 172. Up to 30 conditions per place. [2021-08-13 17:57:22,926 INFO L132 encePairwiseOnDemand]: 57/63 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-08-13 17:57:22,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 190 flow [2021-08-13 17:57:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2021-08-13 17:57:22,934 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-08-13 17:57:22,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2021-08-13 17:57:22,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2021-08-13 17:57:22,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:22,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2021-08-13 17:57:22,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,942 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2021-08-13 17:57:22,942 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 190 flow [2021-08-13 17:57:22,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,942 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:22,942 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:22,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:57:22,943 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:22,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:22,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1011323523, now seen corresponding path program 1 times [2021-08-13 17:57:22,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:22,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639888848] [2021-08-13 17:57:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:22,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:22,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:22,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639888848] [2021-08-13 17:57:22,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639888848] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:22,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:22,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:22,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979642658] [2021-08-13 17:57:22,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:22,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:22,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:22,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:22,965 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 17:57:22,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:22,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 17:57:22,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:22,978 INFO L129 PetriNetUnfolder]: 21/61 cut-off events. [2021-08-13 17:57:22,978 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2021-08-13 17:57:22,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 61 events. 21/61 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 11/72 useless extension candidates. Maximal degree in co-relation 99. Up to 12 conditions per place. [2021-08-13 17:57:22,979 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 2 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-08-13 17:57:22,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 181 flow [2021-08-13 17:57:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-08-13 17:57:22,980 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-08-13 17:57:22,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-08-13 17:57:22,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-08-13 17:57:22,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:22,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-08-13 17:57:22,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,984 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2021-08-13 17:57:22,984 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 181 flow [2021-08-13 17:57:22,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:22,984 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:22,984 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] [2021-08-13 17:57:22,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:57:22,984 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash 614227573, now seen corresponding path program 1 times [2021-08-13 17:57:22,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:22,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098749057] [2021-08-13 17:57:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:23,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:23,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098749057] [2021-08-13 17:57:23,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098749057] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:23,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567213572] [2021-08-13 17:57:23,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:23,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:23,006 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 17:57:23,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 17:57:23,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,017 INFO L129 PetriNetUnfolder]: 12/48 cut-off events. [2021-08-13 17:57:23,017 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2021-08-13 17:57:23,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 48 events. 12/48 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 78. Up to 8 conditions per place. [2021-08-13 17:57:23,018 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 3 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-08-13 17:57:23,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 179 flow [2021-08-13 17:57:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-08-13 17:57:23,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-08-13 17:57:23,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-08-13 17:57:23,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-08-13 17:57:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-08-13 17:57:23,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,022 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2021-08-13 17:57:23,022 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 179 flow [2021-08-13 17:57:23,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,022 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] [2021-08-13 17:57:23,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:57:23,023 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1953879221, now seen corresponding path program 1 times [2021-08-13 17:57:23,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84092329] [2021-08-13 17:57:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:23,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,040 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 17:57:23,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84092329] [2021-08-13 17:57:23,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84092329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:23,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482471647] [2021-08-13 17:57:23,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:23,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:23,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:23,042 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 17:57:23,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 17:57:23,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,051 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-08-13 17:57:23,051 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-08-13 17:57:23,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 27 events. 1/27 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 5/32 useless extension candidates. Maximal degree in co-relation 32. Up to 3 conditions per place. [2021-08-13 17:57:23,051 INFO L132 encePairwiseOnDemand]: 58/63 looper letters, 1 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2021-08-13 17:57:23,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 27 transitions, 112 flow [2021-08-13 17:57:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-08-13 17:57:23,053 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-08-13 17:57:23,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-08-13 17:57:23,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-08-13 17:57:23,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-08-13 17:57:23,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,056 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2021-08-13 17:57:23,056 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 112 flow [2021-08-13 17:57:23,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,056 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,056 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] [2021-08-13 17:57:23,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:57:23,057 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1442332039, now seen corresponding path program 1 times [2021-08-13 17:57:23,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083279484] [2021-08-13 17:57:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:23,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:23,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:23,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:23,151 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:23,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:23,175 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:23,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:23,237 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:23,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:23,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083279484] [2021-08-13 17:57:23,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083279484] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:23,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848681867] [2021-08-13 17:57:23,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:23,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:23,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:23,267 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:23,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:23,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,409 INFO L129 PetriNetUnfolder]: 167/469 cut-off events. [2021-08-13 17:57:23,409 INFO L130 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2021-08-13 17:57:23,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 469 events. 167/469 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3164 event pairs, 49 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 851. Up to 97 conditions per place. [2021-08-13 17:57:23,416 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 20 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2021-08-13 17:57:23,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 202 flow [2021-08-13 17:57:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:23,422 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:23,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:23,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:23,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:23,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,428 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2021-08-13 17:57:23,428 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 202 flow [2021-08-13 17:57:23,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,428 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,429 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] [2021-08-13 17:57:23,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:57:23,429 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2014025299, now seen corresponding path program 2 times [2021-08-13 17:57:23,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613369722] [2021-08-13 17:57:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:23,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:23,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:23,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:23,589 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:23,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:23,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:23,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:23,632 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:23,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:23,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613369722] [2021-08-13 17:57:23,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613369722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:23,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907937900] [2021-08-13 17:57:23,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:23,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:23,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:23,661 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:23,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:23,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,844 INFO L129 PetriNetUnfolder]: 192/654 cut-off events. [2021-08-13 17:57:23,845 INFO L130 PetriNetUnfolder]: For 408/662 co-relation queries the response was YES. [2021-08-13 17:57:23,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 654 events. 192/654 cut-off events. For 408/662 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4961 event pairs, 17 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 1459. Up to 129 conditions per place. [2021-08-13 17:57:23,851 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 55 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2021-08-13 17:57:23,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 536 flow [2021-08-13 17:57:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:23,853 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:23,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:23,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:23,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:23,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,856 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2021-08-13 17:57:23,856 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 93 transitions, 536 flow [2021-08-13 17:57:23,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:23,857 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,857 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] [2021-08-13 17:57:23,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 17:57:23,857 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1143783117, now seen corresponding path program 3 times [2021-08-13 17:57:23,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704463049] [2021-08-13 17:57:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:23,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:23,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:23,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:23,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:23,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:23,996 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:24,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:24,029 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:24,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:24,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704463049] [2021-08-13 17:57:24,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704463049] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:24,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880370202] [2021-08-13 17:57:24,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:24,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:24,060 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:24,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 536 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:24,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,197 INFO L129 PetriNetUnfolder]: 213/903 cut-off events. [2021-08-13 17:57:24,197 INFO L130 PetriNetUnfolder]: For 809/1749 co-relation queries the response was YES. [2021-08-13 17:57:24,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 903 events. 213/903 cut-off events. For 809/1749 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7987 event pairs, 5 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 2336. Up to 179 conditions per place. [2021-08-13 17:57:24,205 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 124 selfloop transitions, 45 changer transitions 0/189 dead transitions. [2021-08-13 17:57:24,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 189 transitions, 1450 flow [2021-08-13 17:57:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:24,208 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:24,208 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,210 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2021-08-13 17:57:24,210 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 189 transitions, 1450 flow [2021-08-13 17:57:24,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,210 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,210 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] [2021-08-13 17:57:24,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 17:57:24,211 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1567609223, now seen corresponding path program 4 times [2021-08-13 17:57:24,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819074674] [2021-08-13 17:57:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:24,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:24,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:24,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:24,271 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:24,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:24,284 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:24,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:24,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:24,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:24,333 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:24,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:24,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819074674] [2021-08-13 17:57:24,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819074674] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:24,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010954319] [2021-08-13 17:57:24,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:24,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:24,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:24,354 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:24,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 189 transitions, 1450 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:24,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,499 INFO L129 PetriNetUnfolder]: 246/1180 cut-off events. [2021-08-13 17:57:24,499 INFO L130 PetriNetUnfolder]: For 1431/3439 co-relation queries the response was YES. [2021-08-13 17:57:24,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 1180 events. 246/1180 cut-off events. For 1431/3439 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11633 event pairs, 1 based on Foata normal form. 13/1153 useless extension candidates. Maximal degree in co-relation 3464. Up to 242 conditions per place. [2021-08-13 17:57:24,508 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 233 selfloop transitions, 89 changer transitions 0/342 dead transitions. [2021-08-13 17:57:24,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 342 transitions, 3318 flow [2021-08-13 17:57:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:24,509 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:24,509 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,511 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,511 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2021-08-13 17:57:24,511 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 342 transitions, 3318 flow [2021-08-13 17:57:24,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,511 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,512 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] [2021-08-13 17:57:24,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 17:57:24,512 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,512 INFO L82 PathProgramCache]: Analyzing trace with hash 915183907, now seen corresponding path program 5 times [2021-08-13 17:57:24,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108312232] [2021-08-13 17:57:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:24,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:24,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:24,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:24,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:24,542 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:24,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:24,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:24,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:24,567 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:24,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:24,585 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:24,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:24,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108312232] [2021-08-13 17:57:24,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108312232] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:24,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727305172] [2021-08-13 17:57:24,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:24,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:24,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:24,604 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:24,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 342 transitions, 3318 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:24,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,789 INFO L129 PetriNetUnfolder]: 266/1338 cut-off events. [2021-08-13 17:57:24,789 INFO L130 PetriNetUnfolder]: For 2200/5875 co-relation queries the response was YES. [2021-08-13 17:57:24,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 1338 events. 266/1338 cut-off events. For 2200/5875 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13726 event pairs, 0 based on Foata normal form. 41/1337 useless extension candidates. Maximal degree in co-relation 4389. Up to 276 conditions per place. [2021-08-13 17:57:24,800 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 347 selfloop transitions, 118 changer transitions 0/485 dead transitions. [2021-08-13 17:57:24,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 485 transitions, 5678 flow [2021-08-13 17:57:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:24,801 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:24,801 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:24,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,803 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,803 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2021-08-13 17:57:24,803 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 485 transitions, 5678 flow [2021-08-13 17:57:24,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,804 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,804 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] [2021-08-13 17:57:24,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 17:57:24,804 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash -405293647, now seen corresponding path program 6 times [2021-08-13 17:57:24,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93387685] [2021-08-13 17:57:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:24,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:24,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:24,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:24,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:24,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:24,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:24,840 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:24,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:24,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:24,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:24,872 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:24,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:24,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93387685] [2021-08-13 17:57:24,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93387685] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:24,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343134000] [2021-08-13 17:57:24,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:24,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:24,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:24,890 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:24,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 485 transitions, 5678 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:24,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:24,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:25,123 INFO L129 PetriNetUnfolder]: 267/1411 cut-off events. [2021-08-13 17:57:25,124 INFO L130 PetriNetUnfolder]: For 2923/7869 co-relation queries the response was YES. [2021-08-13 17:57:25,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1411 events. 267/1411 cut-off events. For 2923/7869 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 14898 event pairs, 0 based on Foata normal form. 78/1453 useless extension candidates. Maximal degree in co-relation 5114. Up to 304 conditions per place. [2021-08-13 17:57:25,136 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 450 selfloop transitions, 135 changer transitions 0/605 dead transitions. [2021-08-13 17:57:25,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 605 transitions, 8288 flow [2021-08-13 17:57:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:25,137 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:25,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:25,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,139 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,139 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2021-08-13 17:57:25,139 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 605 transitions, 8288 flow [2021-08-13 17:57:25,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,139 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:25,140 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] [2021-08-13 17:57:25,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 17:57:25,140 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1994425763, now seen corresponding path program 7 times [2021-08-13 17:57:25,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:25,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357817049] [2021-08-13 17:57:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:25,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:25,169 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:25,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:25,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:25,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:25,192 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:25,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:25,209 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:25,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:25,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:25,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357817049] [2021-08-13 17:57:25,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357817049] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:25,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:25,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:25,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807701365] [2021-08-13 17:57:25,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:25,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:25,227 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:25,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 605 transitions, 8288 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:25,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:25,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:25,515 INFO L129 PetriNetUnfolder]: 258/1446 cut-off events. [2021-08-13 17:57:25,516 INFO L130 PetriNetUnfolder]: For 4055/11761 co-relation queries the response was YES. [2021-08-13 17:57:25,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1446 events. 258/1446 cut-off events. For 4055/11761 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 15586 event pairs, 0 based on Foata normal form. 164/1565 useless extension candidates. Maximal degree in co-relation 5724. Up to 317 conditions per place. [2021-08-13 17:57:25,531 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 459 selfloop transitions, 139 changer transitions 0/618 dead transitions. [2021-08-13 17:57:25,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 618 transitions, 9666 flow [2021-08-13 17:57:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:25,533 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:25,533 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:25,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,535 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,535 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2021-08-13 17:57:25,535 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 618 transitions, 9666 flow [2021-08-13 17:57:25,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,535 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:25,535 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] [2021-08-13 17:57:25,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:57:25,535 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1399393075, now seen corresponding path program 8 times [2021-08-13 17:57:25,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:25,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622477468] [2021-08-13 17:57:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:25,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:25,568 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:25,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:25,579 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:25,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:25,595 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:25,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:25,616 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:25,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:25,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:25,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622477468] [2021-08-13 17:57:25,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622477468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:25,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:25,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:25,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883053623] [2021-08-13 17:57:25,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:25,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:25,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:25,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:25,636 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:25,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 618 transitions, 9666 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:25,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:25,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:25,869 INFO L129 PetriNetUnfolder]: 262/1488 cut-off events. [2021-08-13 17:57:25,870 INFO L130 PetriNetUnfolder]: For 7049/25736 co-relation queries the response was YES. [2021-08-13 17:57:25,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7204 conditions, 1488 events. 262/1488 cut-off events. For 7049/25736 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 16142 event pairs, 0 based on Foata normal form. 325/1772 useless extension candidates. Maximal degree in co-relation 6359. Up to 319 conditions per place. [2021-08-13 17:57:25,885 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 461 selfloop transitions, 139 changer transitions 0/620 dead transitions. [2021-08-13 17:57:25,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 620 transitions, 10898 flow [2021-08-13 17:57:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:25,886 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:25,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:25,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:25,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,889 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2021-08-13 17:57:25,889 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 620 transitions, 10898 flow [2021-08-13 17:57:25,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:25,889 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:25,889 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] [2021-08-13 17:57:25,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:57:25,889 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:25,890 INFO L82 PathProgramCache]: Analyzing trace with hash -991865191, now seen corresponding path program 9 times [2021-08-13 17:57:25,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:25,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055784213] [2021-08-13 17:57:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:25,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:25,960 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:25,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:25,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:25,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:25,985 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:25,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:26,003 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:26,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:26,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055784213] [2021-08-13 17:57:26,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055784213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:26,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805332584] [2021-08-13 17:57:26,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:26,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:26,020 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:26,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 620 transitions, 10898 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:26,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:26,281 INFO L129 PetriNetUnfolder]: 250/1448 cut-off events. [2021-08-13 17:57:26,281 INFO L130 PetriNetUnfolder]: For 7040/17286 co-relation queries the response was YES. [2021-08-13 17:57:26,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1448 events. 250/1448 cut-off events. For 7040/17286 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 15673 event pairs, 0 based on Foata normal form. 162/1565 useless extension candidates. Maximal degree in co-relation 6811. Up to 318 conditions per place. [2021-08-13 17:57:26,298 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 460 selfloop transitions, 139 changer transitions 0/619 dead transitions. [2021-08-13 17:57:26,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 619 transitions, 12078 flow [2021-08-13 17:57:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:26,299 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:26,299 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:26,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:26,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:26,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:26,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,301 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,301 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2021-08-13 17:57:26,301 INFO L482 AbstractCegarLoop]: Abstraction has has 115 places, 619 transitions, 12078 flow [2021-08-13 17:57:26,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,302 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:26,302 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:26,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 17:57:26,302 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:26,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1189859887, now seen corresponding path program 10 times [2021-08-13 17:57:26,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:26,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725361620] [2021-08-13 17:57:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:26,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:26,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:26,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:26,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:26,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:26,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:26,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:26,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:26,359 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:26,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:26,377 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:26,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:26,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725361620] [2021-08-13 17:57:26,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725361620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:26,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810745107] [2021-08-13 17:57:26,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:26,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:26,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:26,409 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:26,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 619 transitions, 12078 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:26,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:26,699 INFO L129 PetriNetUnfolder]: 243/1512 cut-off events. [2021-08-13 17:57:26,699 INFO L130 PetriNetUnfolder]: For 9483/21005 co-relation queries the response was YES. [2021-08-13 17:57:26,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8600 conditions, 1512 events. 243/1512 cut-off events. For 9483/21005 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 16813 event pairs, 0 based on Foata normal form. 162/1623 useless extension candidates. Maximal degree in co-relation 7505. Up to 335 conditions per place. [2021-08-13 17:57:26,717 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 472 selfloop transitions, 144 changer transitions 0/636 dead transitions. [2021-08-13 17:57:26,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 636 transitions, 13650 flow [2021-08-13 17:57:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:26,719 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:26,719 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:26,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:26,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:26,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:26,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,721 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,721 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2021-08-13 17:57:26,721 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 636 transitions, 13650 flow [2021-08-13 17:57:26,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,721 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:26,721 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:26,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 17:57:26,721 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:26,722 INFO L82 PathProgramCache]: Analyzing trace with hash -918113627, now seen corresponding path program 11 times [2021-08-13 17:57:26,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:26,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298977714] [2021-08-13 17:57:26,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:26,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:26,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:26,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:26,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:26,769 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:26,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:26,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:26,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:26,795 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:26,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:26,815 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:26,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:26,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298977714] [2021-08-13 17:57:26,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298977714] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:26,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517251857] [2021-08-13 17:57:26,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:26,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:26,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:26,832 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:26,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 636 transitions, 13650 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:26,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:26,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:27,078 INFO L129 PetriNetUnfolder]: 240/1491 cut-off events. [2021-08-13 17:57:27,078 INFO L130 PetriNetUnfolder]: For 17135/44396 co-relation queries the response was YES. [2021-08-13 17:57:27,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9156 conditions, 1491 events. 240/1491 cut-off events. For 17135/44396 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 16553 event pairs, 0 based on Foata normal form. 325/1760 useless extension candidates. Maximal degree in co-relation 7999. Up to 334 conditions per place. [2021-08-13 17:57:27,091 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 471 selfloop transitions, 144 changer transitions 0/635 dead transitions. [2021-08-13 17:57:27,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 635 transitions, 14858 flow [2021-08-13 17:57:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:27,093 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:27,093 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:27,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,096 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,096 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 85 predicate places. [2021-08-13 17:57:27,096 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 635 transitions, 14858 flow [2021-08-13 17:57:27,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,096 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:27,096 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] [2021-08-13 17:57:27,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 17:57:27,096 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash 927987865, now seen corresponding path program 12 times [2021-08-13 17:57:27,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:27,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624534686] [2021-08-13 17:57:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:27,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:27,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:27,132 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:27,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:27,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:27,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:27,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:27,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:27,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:27,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:27,249 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:27,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:27,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:27,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624534686] [2021-08-13 17:57:27,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624534686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:27,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:27,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:27,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581557301] [2021-08-13 17:57:27,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:27,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:27,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:27,268 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:27,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 635 transitions, 14858 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:27,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:27,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:27,500 INFO L129 PetriNetUnfolder]: 241/1586 cut-off events. [2021-08-13 17:57:27,500 INFO L130 PetriNetUnfolder]: For 15118/29204 co-relation queries the response was YES. [2021-08-13 17:57:27,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 1586 events. 241/1586 cut-off events. For 15118/29204 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 18015 event pairs, 0 based on Foata normal form. 133/1667 useless extension candidates. Maximal degree in co-relation 8798. Up to 343 conditions per place. [2021-08-13 17:57:27,513 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 468 selfloop transitions, 161 changer transitions 0/649 dead transitions. [2021-08-13 17:57:27,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 649 transitions, 16452 flow [2021-08-13 17:57:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:27,514 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:27,514 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:27,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,516 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,516 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 92 predicate places. [2021-08-13 17:57:27,516 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 649 transitions, 16452 flow [2021-08-13 17:57:27,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,517 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:27,517 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] [2021-08-13 17:57:27,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 17:57:27,517 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:27,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2076828333, now seen corresponding path program 13 times [2021-08-13 17:57:27,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:27,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895185999] [2021-08-13 17:57:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:27,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:27,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:27,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:27,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:27,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:27,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:27,550 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:27,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:27,563 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:27,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:27,581 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:27,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:27,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:27,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895185999] [2021-08-13 17:57:27,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895185999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:27,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:27,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:27,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912002254] [2021-08-13 17:57:27,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:27,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:27,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:27,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:27,599 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:27,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 649 transitions, 16452 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:27,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:27,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:27,896 INFO L129 PetriNetUnfolder]: 246/1591 cut-off events. [2021-08-13 17:57:27,897 INFO L130 PetriNetUnfolder]: For 17769/32945 co-relation queries the response was YES. [2021-08-13 17:57:27,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 1591 events. 246/1591 cut-off events. For 17769/32945 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 18001 event pairs, 0 based on Foata normal form. 118/1661 useless extension candidates. Maximal degree in co-relation 9352. Up to 342 conditions per place. [2021-08-13 17:57:27,912 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 473 selfloop transitions, 155 changer transitions 0/648 dead transitions. [2021-08-13 17:57:27,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 648 transitions, 17682 flow [2021-08-13 17:57:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:27,914 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:27,914 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:27,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:27,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,916 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2021-08-13 17:57:27,916 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 648 transitions, 17682 flow [2021-08-13 17:57:27,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:27,916 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:27,916 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] [2021-08-13 17:57:27,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 17:57:27,916 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:27,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:27,917 INFO L82 PathProgramCache]: Analyzing trace with hash -859726089, now seen corresponding path program 14 times [2021-08-13 17:57:27,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:27,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101457862] [2021-08-13 17:57:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:27,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:27,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:27,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:27,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:27,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:27,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:27,954 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:27,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:27,967 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:27,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:27,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:27,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:28,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:28,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101457862] [2021-08-13 17:57:28,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101457862] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:28,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:28,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:28,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837212862] [2021-08-13 17:57:28,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:28,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:28,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:28,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:28,005 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:28,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 648 transitions, 17682 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:28,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:28,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:28,305 INFO L129 PetriNetUnfolder]: 242/1605 cut-off events. [2021-08-13 17:57:28,305 INFO L130 PetriNetUnfolder]: For 23512/42477 co-relation queries the response was YES. [2021-08-13 17:57:28,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 1605 events. 242/1605 cut-off events. For 23512/42477 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 18262 event pairs, 0 based on Foata normal form. 146/1698 useless extension candidates. Maximal degree in co-relation 9948. Up to 344 conditions per place. [2021-08-13 17:57:28,323 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 466 selfloop transitions, 164 changer transitions 0/650 dead transitions. [2021-08-13 17:57:28,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 650 transitions, 18998 flow [2021-08-13 17:57:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:28,325 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:28,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:28,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:28,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:28,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:28,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,327 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,327 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 106 predicate places. [2021-08-13 17:57:28,327 INFO L482 AbstractCegarLoop]: Abstraction has has 150 places, 650 transitions, 18998 flow [2021-08-13 17:57:28,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,327 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:28,327 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] [2021-08-13 17:57:28,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 17:57:28,328 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:28,328 INFO L82 PathProgramCache]: Analyzing trace with hash 856854033, now seen corresponding path program 15 times [2021-08-13 17:57:28,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:28,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557465382] [2021-08-13 17:57:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:28,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:28,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:28,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:28,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:28,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:28,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:28,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:28,384 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:28,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:28,405 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:28,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:28,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:28,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557465382] [2021-08-13 17:57:28,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557465382] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:28,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:28,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:28,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219609468] [2021-08-13 17:57:28,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:28,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:28,425 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:28,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 650 transitions, 18998 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:28,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:28,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:28,720 INFO L129 PetriNetUnfolder]: 234/1568 cut-off events. [2021-08-13 17:57:28,720 INFO L130 PetriNetUnfolder]: For 34945/69894 co-relation queries the response was YES. [2021-08-13 17:57:28,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11990 conditions, 1568 events. 234/1568 cut-off events. For 34945/69894 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17812 event pairs, 0 based on Foata normal form. 199/1711 useless extension candidates. Maximal degree in co-relation 10415. Up to 343 conditions per place. [2021-08-13 17:57:28,733 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 472 selfloop transitions, 157 changer transitions 0/649 dead transitions. [2021-08-13 17:57:28,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 649 transitions, 20226 flow [2021-08-13 17:57:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:28,734 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:28,734 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:28,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:28,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:28,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:28,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,736 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,736 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2021-08-13 17:57:28,736 INFO L482 AbstractCegarLoop]: Abstraction has has 157 places, 649 transitions, 20226 flow [2021-08-13 17:57:28,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,737 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:28,737 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:28,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 17:57:28,737 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:28,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1519549749, now seen corresponding path program 16 times [2021-08-13 17:57:28,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:28,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114328225] [2021-08-13 17:57:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:28,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:28,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:28,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:28,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:28,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:28,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:28,794 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:28,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:28,819 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:28,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:28,840 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:28,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:28,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:28,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114328225] [2021-08-13 17:57:28,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114328225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:28,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:28,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:28,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266504895] [2021-08-13 17:57:28,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:28,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:28,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:28,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:28,860 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:28,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 649 transitions, 20226 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:28,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:28,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:28,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:29,099 INFO L129 PetriNetUnfolder]: 230/1624 cut-off events. [2021-08-13 17:57:29,100 INFO L130 PetriNetUnfolder]: For 37321/67386 co-relation queries the response was YES. [2021-08-13 17:57:29,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12938 conditions, 1624 events. 230/1624 cut-off events. For 37321/67386 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 18747 event pairs, 0 based on Foata normal form. 171/1738 useless extension candidates. Maximal degree in co-relation 11161. Up to 355 conditions per place. [2021-08-13 17:57:29,114 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 476 selfloop transitions, 166 changer transitions 0/662 dead transitions. [2021-08-13 17:57:29,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 662 transitions, 21926 flow [2021-08-13 17:57:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:29,115 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:29,115 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:29,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,117 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 120 predicate places. [2021-08-13 17:57:29,117 INFO L482 AbstractCegarLoop]: Abstraction has has 164 places, 662 transitions, 21926 flow [2021-08-13 17:57:29,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,117 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:29,117 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] [2021-08-13 17:57:29,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 17:57:29,117 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1087943799, now seen corresponding path program 17 times [2021-08-13 17:57:29,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:29,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468519565] [2021-08-13 17:57:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:29,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:29,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:29,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:29,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:29,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:29,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:29,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:29,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:29,169 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:29,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:29,186 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:29,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:29,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:29,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468519565] [2021-08-13 17:57:29,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468519565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:29,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:29,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:29,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423927733] [2021-08-13 17:57:29,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:29,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:29,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:29,205 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:29,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 662 transitions, 21926 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:29,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:29,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:29,479 INFO L129 PetriNetUnfolder]: 228/1613 cut-off events. [2021-08-13 17:57:29,479 INFO L130 PetriNetUnfolder]: For 33927/54303 co-relation queries the response was YES. [2021-08-13 17:57:29,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 1613 events. 228/1613 cut-off events. For 33927/54303 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 18667 event pairs, 0 based on Foata normal form. 118/1675 useless extension candidates. Maximal degree in co-relation 11695. Up to 354 conditions per place. [2021-08-13 17:57:29,493 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 474 selfloop transitions, 167 changer transitions 0/661 dead transitions. [2021-08-13 17:57:29,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 661 transitions, 23174 flow [2021-08-13 17:57:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:29,494 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:29,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:29,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,499 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,499 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2021-08-13 17:57:29,499 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 661 transitions, 23174 flow [2021-08-13 17:57:29,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,499 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:29,499 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] [2021-08-13 17:57:29,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 17:57:29,499 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash -806932297, now seen corresponding path program 18 times [2021-08-13 17:57:29,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:29,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964757885] [2021-08-13 17:57:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:29,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:29,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:29,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:29,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:29,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:29,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:29,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:29,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:29,558 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:29,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:29,578 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:29,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:29,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:29,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964757885] [2021-08-13 17:57:29,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964757885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:29,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:29,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:29,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840168020] [2021-08-13 17:57:29,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:29,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:29,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:29,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:29,597 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:29,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 661 transitions, 23174 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:29,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:29,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:29,962 INFO L129 PetriNetUnfolder]: 226/1822 cut-off events. [2021-08-13 17:57:29,962 INFO L130 PetriNetUnfolder]: For 64767/112225 co-relation queries the response was YES. [2021-08-13 17:57:29,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15578 conditions, 1822 events. 226/1822 cut-off events. For 64767/112225 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 22021 event pairs, 0 based on Foata normal form. 235/1988 useless extension candidates. Maximal degree in co-relation 13207. Up to 404 conditions per place. [2021-08-13 17:57:29,977 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 530 selfloop transitions, 167 changer transitions 0/717 dead transitions. [2021-08-13 17:57:29,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 717 transitions, 26584 flow [2021-08-13 17:57:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:29,978 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:29,978 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:29,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:29,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,979 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,979 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 134 predicate places. [2021-08-13 17:57:29,979 INFO L482 AbstractCegarLoop]: Abstraction has has 178 places, 717 transitions, 26584 flow [2021-08-13 17:57:29,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:29,979 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:29,980 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] [2021-08-13 17:57:29,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 17:57:29,980 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 669164169, now seen corresponding path program 19 times [2021-08-13 17:57:29,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:29,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995898481] [2021-08-13 17:57:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:29,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:29,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:29,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:29,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:30,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:30,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:30,012 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:30,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:30,026 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:30,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:30,042 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:30,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:30,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:30,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995898481] [2021-08-13 17:57:30,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995898481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:30,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:30,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:30,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978965847] [2021-08-13 17:57:30,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:30,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:30,064 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:30,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 717 transitions, 26584 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:30,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:30,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:30,391 INFO L129 PetriNetUnfolder]: 228/1908 cut-off events. [2021-08-13 17:57:30,391 INFO L130 PetriNetUnfolder]: For 48469/71433 co-relation queries the response was YES. [2021-08-13 17:57:30,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16703 conditions, 1908 events. 228/1908 cut-off events. For 48469/71433 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 23432 event pairs, 0 based on Foata normal form. 116/1963 useless extension candidates. Maximal degree in co-relation 14087. Up to 417 conditions per place. [2021-08-13 17:57:30,408 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 539 selfloop transitions, 171 changer transitions 0/730 dead transitions. [2021-08-13 17:57:30,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 730 transitions, 28498 flow [2021-08-13 17:57:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:30,409 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:30,409 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:30,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:30,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:30,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:30,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,421 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,421 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2021-08-13 17:57:30,421 INFO L482 AbstractCegarLoop]: Abstraction has has 185 places, 730 transitions, 28498 flow [2021-08-13 17:57:30,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,421 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,421 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] [2021-08-13 17:57:30,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 17:57:30,421 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1081081535, now seen corresponding path program 20 times [2021-08-13 17:57:30,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116635554] [2021-08-13 17:57:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:30,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:30,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:30,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:30,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:30,455 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:30,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:30,467 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:30,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:30,485 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:30,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:30,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:30,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116635554] [2021-08-13 17:57:30,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116635554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:30,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:30,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:30,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827587469] [2021-08-13 17:57:30,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:30,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:30,504 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:30,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 730 transitions, 28498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:30,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:30,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:30,920 INFO L129 PetriNetUnfolder]: 228/1905 cut-off events. [2021-08-13 17:57:30,920 INFO L130 PetriNetUnfolder]: For 60392/88201 co-relation queries the response was YES. [2021-08-13 17:57:30,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17389 conditions, 1905 events. 228/1905 cut-off events. For 60392/88201 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 23382 event pairs, 0 based on Foata normal form. 146/1989 useless extension candidates. Maximal degree in co-relation 14684. Up to 416 conditions per place. [2021-08-13 17:57:30,938 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 539 selfloop transitions, 170 changer transitions 0/729 dead transitions. [2021-08-13 17:57:30,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 729 transitions, 29876 flow [2021-08-13 17:57:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:30,939 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:30,939 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:30,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:30,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:30,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:30,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,941 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,941 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2021-08-13 17:57:30,941 INFO L482 AbstractCegarLoop]: Abstraction has has 192 places, 729 transitions, 29876 flow [2021-08-13 17:57:30,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:30,941 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,941 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] [2021-08-13 17:57:30,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 17:57:30,941 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:30,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,941 INFO L82 PathProgramCache]: Analyzing trace with hash -53028929, now seen corresponding path program 21 times [2021-08-13 17:57:30,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150269319] [2021-08-13 17:57:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:30,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:30,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:30,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:30,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:30,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:30,997 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:30,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:31,016 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:31,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150269319] [2021-08-13 17:57:31,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150269319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:31,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925329953] [2021-08-13 17:57:31,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:31,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:31,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:31,034 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:31,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 729 transitions, 29876 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:31,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,367 INFO L129 PetriNetUnfolder]: 220/1868 cut-off events. [2021-08-13 17:57:31,367 INFO L130 PetriNetUnfolder]: For 60192/85756 co-relation queries the response was YES. [2021-08-13 17:57:31,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17993 conditions, 1868 events. 220/1868 cut-off events. For 60192/85756 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 22898 event pairs, 0 based on Foata normal form. 116/1911 useless extension candidates. Maximal degree in co-relation 15201. Up to 415 conditions per place. [2021-08-13 17:57:31,383 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 538 selfloop transitions, 170 changer transitions 0/728 dead transitions. [2021-08-13 17:57:31,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 728 transitions, 31250 flow [2021-08-13 17:57:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:31,384 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:31,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:31,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:31,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:31,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,386 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,386 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 155 predicate places. [2021-08-13 17:57:31,386 INFO L482 AbstractCegarLoop]: Abstraction has has 199 places, 728 transitions, 31250 flow [2021-08-13 17:57:31,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,386 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,386 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] [2021-08-13 17:57:31,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 17:57:31,386 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash 521468273, now seen corresponding path program 22 times [2021-08-13 17:57:31,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718349964] [2021-08-13 17:57:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:31,402 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:31,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:31,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:31,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:31,417 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:31,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:31,477 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:31,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:31,498 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:31,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718349964] [2021-08-13 17:57:31,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718349964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:31,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949145239] [2021-08-13 17:57:31,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:31,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:31,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:31,521 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:31,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 728 transitions, 31250 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:31,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,951 INFO L129 PetriNetUnfolder]: 229/1907 cut-off events. [2021-08-13 17:57:31,951 INFO L130 PetriNetUnfolder]: For 74536/105293 co-relation queries the response was YES. [2021-08-13 17:57:31,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18772 conditions, 1907 events. 229/1907 cut-off events. For 74536/105293 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23440 event pairs, 0 based on Foata normal form. 146/1990 useless extension candidates. Maximal degree in co-relation 15895. Up to 414 conditions per place. [2021-08-13 17:57:31,972 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 541 selfloop transitions, 166 changer transitions 0/727 dead transitions. [2021-08-13 17:57:31,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 727 transitions, 32620 flow [2021-08-13 17:57:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:31,974 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:31,974 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:31,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:31,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:31,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,975 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,975 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 162 predicate places. [2021-08-13 17:57:31,975 INFO L482 AbstractCegarLoop]: Abstraction has has 206 places, 727 transitions, 32620 flow [2021-08-13 17:57:31,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:31,976 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,976 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] [2021-08-13 17:57:31,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 17:57:31,976 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1352820231, now seen corresponding path program 23 times [2021-08-13 17:57:31,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356270518] [2021-08-13 17:57:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:31,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:31,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:32,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,011 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:32,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:32,026 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:32,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:32,045 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:32,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:32,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356270518] [2021-08-13 17:57:32,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356270518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:32,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283432972] [2021-08-13 17:57:32,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:32,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:32,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:32,065 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:32,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 727 transitions, 32620 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:32,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,532 INFO L129 PetriNetUnfolder]: 229/1907 cut-off events. [2021-08-13 17:57:32,532 INFO L130 PetriNetUnfolder]: For 116981/179209 co-relation queries the response was YES. [2021-08-13 17:57:32,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19459 conditions, 1907 events. 229/1907 cut-off events. For 116981/179209 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23422 event pairs, 0 based on Foata normal form. 235/2079 useless extension candidates. Maximal degree in co-relation 16499. Up to 413 conditions per place. [2021-08-13 17:57:32,554 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 540 selfloop transitions, 166 changer transitions 0/726 dead transitions. [2021-08-13 17:57:32,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 726 transitions, 33986 flow [2021-08-13 17:57:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:32,556 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:32,556 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:32,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:32,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:32,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,557 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,557 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2021-08-13 17:57:32,557 INFO L482 AbstractCegarLoop]: Abstraction has has 213 places, 726 transitions, 33986 flow [2021-08-13 17:57:32,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,558 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,558 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] [2021-08-13 17:57:32,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 17:57:32,558 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,558 INFO L82 PathProgramCache]: Analyzing trace with hash 104422249, now seen corresponding path program 24 times [2021-08-13 17:57:32,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398652194] [2021-08-13 17:57:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:32,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:32,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:32,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:32,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:32,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:32,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:32,624 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:32,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:32,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398652194] [2021-08-13 17:57:32,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398652194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:32,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306514651] [2021-08-13 17:57:32,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:32,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:32,643 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:32,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 726 transitions, 33986 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:32,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:32,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:33,101 INFO L129 PetriNetUnfolder]: 214/2136 cut-off events. [2021-08-13 17:57:33,101 INFO L130 PetriNetUnfolder]: For 125139/184580 co-relation queries the response was YES. [2021-08-13 17:57:33,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22261 conditions, 2136 events. 214/2136 cut-off events. For 125139/184580 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 27517 event pairs, 0 based on Foata normal form. 201/2259 useless extension candidates. Maximal degree in co-relation 18436. Up to 483 conditions per place. [2021-08-13 17:57:33,120 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 587 selfloop transitions, 189 changer transitions 0/796 dead transitions. [2021-08-13 17:57:33,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 796 transitions, 38898 flow [2021-08-13 17:57:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:33,121 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:33,122 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:33,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:33,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:33,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:33,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,123 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,123 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 176 predicate places. [2021-08-13 17:57:33,123 INFO L482 AbstractCegarLoop]: Abstraction has has 220 places, 796 transitions, 38898 flow [2021-08-13 17:57:33,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,123 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:33,123 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] [2021-08-13 17:57:33,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 17:57:33,124 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:33,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:33,124 INFO L82 PathProgramCache]: Analyzing trace with hash -580118471, now seen corresponding path program 25 times [2021-08-13 17:57:33,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:33,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157295366] [2021-08-13 17:57:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:33,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:33,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:33,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:33,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:33,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:33,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:33,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:33,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:33,166 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:33,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:33,183 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:33,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:33,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:33,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157295366] [2021-08-13 17:57:33,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157295366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:33,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:33,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:33,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787829817] [2021-08-13 17:57:33,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:33,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:33,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:33,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:33,201 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:33,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 796 transitions, 38898 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:33,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:33,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:33,701 INFO L129 PetriNetUnfolder]: 215/2137 cut-off events. [2021-08-13 17:57:33,701 INFO L130 PetriNetUnfolder]: For 124094/173636 co-relation queries the response was YES. [2021-08-13 17:57:33,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23016 conditions, 2137 events. 215/2137 cut-off events. For 124094/173636 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27539 event pairs, 0 based on Foata normal form. 174/2232 useless extension candidates. Maximal degree in co-relation 19084. Up to 482 conditions per place. [2021-08-13 17:57:33,721 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 586 selfloop transitions, 189 changer transitions 0/795 dead transitions. [2021-08-13 17:57:33,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 795 transitions, 40398 flow [2021-08-13 17:57:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:33,722 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:33,722 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:33,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:33,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:33,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:33,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,723 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2021-08-13 17:57:33,723 INFO L482 AbstractCegarLoop]: Abstraction has has 227 places, 795 transitions, 40398 flow [2021-08-13 17:57:33,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,723 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:33,723 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] [2021-08-13 17:57:33,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 17:57:33,724 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:33,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1416147205, now seen corresponding path program 26 times [2021-08-13 17:57:33,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:33,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587145881] [2021-08-13 17:57:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:33,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:33,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:33,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:33,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:33,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:33,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:33,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:33,765 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:33,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:33,782 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:33,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:33,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:33,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587145881] [2021-08-13 17:57:33,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587145881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:33,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:33,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:33,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778805093] [2021-08-13 17:57:33,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:33,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:33,800 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:33,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 795 transitions, 40398 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:33,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:33,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:33,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:34,307 INFO L129 PetriNetUnfolder]: 215/2126 cut-off events. [2021-08-13 17:57:34,307 INFO L130 PetriNetUnfolder]: For 135253/186937 co-relation queries the response was YES. [2021-08-13 17:57:34,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23735 conditions, 2126 events. 215/2126 cut-off events. For 135253/186937 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27384 event pairs, 0 based on Foata normal form. 174/2223 useless extension candidates. Maximal degree in co-relation 19698. Up to 481 conditions per place. [2021-08-13 17:57:34,327 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 590 selfloop transitions, 184 changer transitions 0/794 dead transitions. [2021-08-13 17:57:34,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 794 transitions, 41894 flow [2021-08-13 17:57:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:34,328 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:34,328 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:34,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:34,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:34,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:34,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,329 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,330 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2021-08-13 17:57:34,330 INFO L482 AbstractCegarLoop]: Abstraction has has 234 places, 794 transitions, 41894 flow [2021-08-13 17:57:34,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,330 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:34,330 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] [2021-08-13 17:57:34,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 17:57:34,330 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1216394373, now seen corresponding path program 27 times [2021-08-13 17:57:34,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:34,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848315052] [2021-08-13 17:57:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:34,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:34,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:34,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:34,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:34,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:34,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:34,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:34,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:34,373 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:34,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:34,391 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:34,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:34,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:34,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848315052] [2021-08-13 17:57:34,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848315052] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:34,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:34,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:34,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115198338] [2021-08-13 17:57:34,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:34,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:34,410 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:34,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 794 transitions, 41894 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:34,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:34,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:34,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:35,075 INFO L129 PetriNetUnfolder]: 214/2136 cut-off events. [2021-08-13 17:57:35,075 INFO L130 PetriNetUnfolder]: For 113649/147025 co-relation queries the response was YES. [2021-08-13 17:57:35,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24517 conditions, 2136 events. 214/2136 cut-off events. For 113649/147025 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 27538 event pairs, 0 based on Foata normal form. 118/2176 useless extension candidates. Maximal degree in co-relation 20377. Up to 480 conditions per place. [2021-08-13 17:57:35,096 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 589 selfloop transitions, 184 changer transitions 0/793 dead transitions. [2021-08-13 17:57:35,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 793 transitions, 43386 flow [2021-08-13 17:57:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:35,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:35,098 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:35,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:35,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:35,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:35,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:35,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,099 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,099 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2021-08-13 17:57:35,099 INFO L482 AbstractCegarLoop]: Abstraction has has 241 places, 793 transitions, 43386 flow [2021-08-13 17:57:35,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,100 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:35,100 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] [2021-08-13 17:57:35,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 17:57:35,100 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1772785765, now seen corresponding path program 28 times [2021-08-13 17:57:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:35,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678130542] [2021-08-13 17:57:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:35,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:35,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:35,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:35,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:35,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:35,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:35,135 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:35,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:35,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:35,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:35,165 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:35,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:35,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:35,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678130542] [2021-08-13 17:57:35,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678130542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:35,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:35,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:35,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396827864] [2021-08-13 17:57:35,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:35,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:35,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:35,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:35,185 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:35,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 793 transitions, 43386 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:35,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:35,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:35,682 INFO L129 PetriNetUnfolder]: 215/2133 cut-off events. [2021-08-13 17:57:35,682 INFO L130 PetriNetUnfolder]: For 136559/176160 co-relation queries the response was YES. [2021-08-13 17:57:35,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25254 conditions, 2133 events. 215/2133 cut-off events. For 136559/176160 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27461 event pairs, 0 based on Foata normal form. 146/2198 useless extension candidates. Maximal degree in co-relation 21013. Up to 479 conditions per place. [2021-08-13 17:57:35,703 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 589 selfloop transitions, 183 changer transitions 0/792 dead transitions. [2021-08-13 17:57:35,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 792 transitions, 44874 flow [2021-08-13 17:57:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:35,705 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:35,705 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:35,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:35,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:35,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:35,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,706 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,706 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2021-08-13 17:57:35,706 INFO L482 AbstractCegarLoop]: Abstraction has has 248 places, 792 transitions, 44874 flow [2021-08-13 17:57:35,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,706 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:35,706 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] [2021-08-13 17:57:35,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 17:57:35,707 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:35,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1218730893, now seen corresponding path program 29 times [2021-08-13 17:57:35,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:35,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261062395] [2021-08-13 17:57:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:35,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:35,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:35,721 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:35,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:35,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:35,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:35,736 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:35,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:35,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:35,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:35,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:35,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:35,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:35,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261062395] [2021-08-13 17:57:35,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261062395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:35,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:35,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:35,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12780912] [2021-08-13 17:57:35,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:35,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:35,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:35,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:35,783 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:35,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 792 transitions, 44874 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:35,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:35,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:35,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:36,339 INFO L129 PetriNetUnfolder]: 215/2134 cut-off events. [2021-08-13 17:57:36,339 INFO L130 PetriNetUnfolder]: For 208997/288949 co-relation queries the response was YES. [2021-08-13 17:57:36,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26003 conditions, 2134 events. 215/2134 cut-off events. For 208997/288949 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27545 event pairs, 0 based on Foata normal form. 235/2289 useless extension candidates. Maximal degree in co-relation 21663. Up to 478 conditions per place. [2021-08-13 17:57:36,361 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 556 selfloop transitions, 150 changer transitions 65/791 dead transitions. [2021-08-13 17:57:36,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 791 transitions, 46358 flow [2021-08-13 17:57:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:36,362 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:36,362 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:36,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:36,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:36,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:36,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:36,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:36,363 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:36,363 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 211 predicate places. [2021-08-13 17:57:36,363 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 791 transitions, 46358 flow [2021-08-13 17:57:36,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:36,363 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:36,364 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] [2021-08-13 17:57:36,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 17:57:36,364 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:36,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2136725427, now seen corresponding path program 30 times [2021-08-13 17:57:36,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:36,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016691925] [2021-08-13 17:57:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:36,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:36,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:36,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:36,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:36,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:36,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:57:36,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:36,419 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:36,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:36,437 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:36,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:36,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:36,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016691925] [2021-08-13 17:57:36,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016691925] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:36,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:36,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:36,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742269194] [2021-08-13 17:57:36,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:36,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:36,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:36,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:36,457 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:36,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 791 transitions, 46358 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:36,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:36,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:36,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:37,133 INFO L129 PetriNetUnfolder]: 219/2306 cut-off events. [2021-08-13 17:57:37,134 INFO L130 PetriNetUnfolder]: For 211525/287274 co-relation queries the response was YES. [2021-08-13 17:57:37,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28413 conditions, 2306 events. 219/2306 cut-off events. For 211525/287274 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 30413 event pairs, 0 based on Foata normal form. 195/2419 useless extension candidates. Maximal degree in co-relation 23432. Up to 511 conditions per place. [2021-08-13 17:57:37,158 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 547 selfloop transitions, 201 changer transitions 67/835 dead transitions. [2021-08-13 17:57:37,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 835 transitions, 50628 flow [2021-08-13 17:57:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:37,159 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:37,159 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:37,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:37,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:37,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:37,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,161 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,161 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 218 predicate places. [2021-08-13 17:57:37,161 INFO L482 AbstractCegarLoop]: Abstraction has has 262 places, 835 transitions, 50628 flow [2021-08-13 17:57:37,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,161 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:37,161 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] [2021-08-13 17:57:37,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 17:57:37,161 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:37,162 INFO L82 PathProgramCache]: Analyzing trace with hash -639423453, now seen corresponding path program 31 times [2021-08-13 17:57:37,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:37,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349576615] [2021-08-13 17:57:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:37,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:37,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:37,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:37,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:37,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:37,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:37,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:37,204 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:37,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:37,222 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:37,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:37,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:37,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349576615] [2021-08-13 17:57:37,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349576615] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:37,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:37,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:37,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654092989] [2021-08-13 17:57:37,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:37,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:37,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:37,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:37,240 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:37,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 835 transitions, 50628 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:37,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:37,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:37,834 INFO L129 PetriNetUnfolder]: 218/2298 cut-off events. [2021-08-13 17:57:37,835 INFO L130 PetriNetUnfolder]: For 211021/283290 co-relation queries the response was YES. [2021-08-13 17:57:37,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29179 conditions, 2298 events. 218/2298 cut-off events. For 211021/283290 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 30242 event pairs, 0 based on Foata normal form. 282/2500 useless extension candidates. Maximal degree in co-relation 24087. Up to 510 conditions per place. [2021-08-13 17:57:37,859 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 565 selfloop transitions, 182 changer transitions 67/834 dead transitions. [2021-08-13 17:57:37,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 834 transitions, 52194 flow [2021-08-13 17:57:37,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:37,860 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:37,860 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:37,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:37,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:37,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:37,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,862 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,862 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 225 predicate places. [2021-08-13 17:57:37,862 INFO L482 AbstractCegarLoop]: Abstraction has has 269 places, 834 transitions, 52194 flow [2021-08-13 17:57:37,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,862 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:37,862 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] [2021-08-13 17:57:37,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 17:57:37,862 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1545052105, now seen corresponding path program 32 times [2021-08-13 17:57:37,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:37,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146008235] [2021-08-13 17:57:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:37,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:37,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:37,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:37,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:37,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:37,899 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:37,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:37,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:37,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:37,937 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:37,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:37,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:37,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146008235] [2021-08-13 17:57:37,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146008235] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:37,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:37,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:37,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795651961] [2021-08-13 17:57:37,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:37,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:37,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:37,957 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:37,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 834 transitions, 52194 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:37,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:37,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:37,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:38,770 INFO L129 PetriNetUnfolder]: 219/2355 cut-off events. [2021-08-13 17:57:38,770 INFO L130 PetriNetUnfolder]: For 152815/185880 co-relation queries the response was YES. [2021-08-13 17:57:38,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30456 conditions, 2355 events. 219/2355 cut-off events. For 152815/185880 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31251 event pairs, 0 based on Foata normal form. 109/2383 useless extension candidates. Maximal degree in co-relation 25075. Up to 520 conditions per place. [2021-08-13 17:57:38,799 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 552 selfloop transitions, 204 changer transitions 69/845 dead transitions. [2021-08-13 17:57:38,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 845 transitions, 54548 flow [2021-08-13 17:57:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:38,801 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:38,801 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:38,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:38,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:38,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:38,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:38,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:38,802 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:38,802 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 232 predicate places. [2021-08-13 17:57:38,802 INFO L482 AbstractCegarLoop]: Abstraction has has 276 places, 845 transitions, 54548 flow [2021-08-13 17:57:38,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:38,802 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:38,802 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] [2021-08-13 17:57:38,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 17:57:38,803 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:38,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:38,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1535132151, now seen corresponding path program 33 times [2021-08-13 17:57:38,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:38,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052091656] [2021-08-13 17:57:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:38,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:38,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:38,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:38,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:38,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:38,842 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:38,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:38,856 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:38,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:38,875 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:38,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:38,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:38,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052091656] [2021-08-13 17:57:38,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052091656] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:38,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:38,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:38,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446604140] [2021-08-13 17:57:38,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:38,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:38,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:38,894 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:38,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 845 transitions, 54548 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:38,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:38,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:38,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:39,548 INFO L129 PetriNetUnfolder]: 220/2352 cut-off events. [2021-08-13 17:57:39,548 INFO L130 PetriNetUnfolder]: For 177775/217057 co-relation queries the response was YES. [2021-08-13 17:57:39,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31241 conditions, 2352 events. 220/2352 cut-off events. For 177775/217057 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31203 event pairs, 0 based on Foata normal form. 130/2401 useless extension candidates. Maximal degree in co-relation 25748. Up to 519 conditions per place. [2021-08-13 17:57:39,577 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 554 selfloop transitions, 201 changer transitions 69/844 dead transitions. [2021-08-13 17:57:39,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 844 transitions, 56130 flow [2021-08-13 17:57:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:39,579 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:39,579 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:39,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:39,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:39,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:39,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:39,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:39,580 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:39,580 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 239 predicate places. [2021-08-13 17:57:39,580 INFO L482 AbstractCegarLoop]: Abstraction has has 283 places, 844 transitions, 56130 flow [2021-08-13 17:57:39,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:39,580 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:39,580 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] [2021-08-13 17:57:39,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 17:57:39,581 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1761190887, now seen corresponding path program 34 times [2021-08-13 17:57:39,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:39,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655229246] [2021-08-13 17:57:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:39,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:39,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:39,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:39,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:39,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:39,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:57:39,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:39,642 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:39,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:39,660 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:39,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:39,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:39,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655229246] [2021-08-13 17:57:39,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655229246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:39,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:39,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:39,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925773265] [2021-08-13 17:57:39,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:39,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:39,679 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:39,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 844 transitions, 56130 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:39,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:39,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:39,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:40,428 INFO L129 PetriNetUnfolder]: 219/2358 cut-off events. [2021-08-13 17:57:40,428 INFO L130 PetriNetUnfolder]: For 239994/313168 co-relation queries the response was YES. [2021-08-13 17:57:40,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32055 conditions, 2358 events. 219/2358 cut-off events. For 239994/313168 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31245 event pairs, 0 based on Foata normal form. 194/2472 useless extension candidates. Maximal degree in co-relation 26452. Up to 518 conditions per place. [2021-08-13 17:57:40,458 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 549 selfloop transitions, 202 changer transitions 72/843 dead transitions. [2021-08-13 17:57:40,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 843 transitions, 57708 flow [2021-08-13 17:57:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:40,459 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:40,459 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:40,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:40,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:40,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:40,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,461 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,461 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 246 predicate places. [2021-08-13 17:57:40,461 INFO L482 AbstractCegarLoop]: Abstraction has has 290 places, 843 transitions, 57708 flow [2021-08-13 17:57:40,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,461 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:40,461 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] [2021-08-13 17:57:40,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 17:57:40,461 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash -993837255, now seen corresponding path program 35 times [2021-08-13 17:57:40,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:40,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795019229] [2021-08-13 17:57:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:40,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:40,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:40,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:40,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:40,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:40,498 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:40,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:40,519 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:40,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:40,537 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:40,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:40,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:40,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795019229] [2021-08-13 17:57:40,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795019229] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:40,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:40,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:40,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129756828] [2021-08-13 17:57:40,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:40,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:40,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:40,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:40,555 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:40,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 843 transitions, 57708 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:40,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:40,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:40,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:41,265 INFO L129 PetriNetUnfolder]: 220/2350 cut-off events. [2021-08-13 17:57:41,265 INFO L130 PetriNetUnfolder]: For 197860/239711 co-relation queries the response was YES. [2021-08-13 17:57:41,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32819 conditions, 2350 events. 220/2350 cut-off events. For 197860/239711 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31141 event pairs, 0 based on Foata normal form. 128/2397 useless extension candidates. Maximal degree in co-relation 27108. Up to 517 conditions per place. [2021-08-13 17:57:41,296 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 547 selfloop transitions, 200 changer transitions 75/842 dead transitions. [2021-08-13 17:57:41,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 842 transitions, 59282 flow [2021-08-13 17:57:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:41,298 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:41,298 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:41,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:41,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:41,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:41,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:41,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:41,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:41,299 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2021-08-13 17:57:41,299 INFO L482 AbstractCegarLoop]: Abstraction has has 297 places, 842 transitions, 59282 flow [2021-08-13 17:57:41,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:41,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:41,300 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] [2021-08-13 17:57:41,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 17:57:41,300 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash -424435181, now seen corresponding path program 36 times [2021-08-13 17:57:41,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:41,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348794614] [2021-08-13 17:57:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:41,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:41,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:41,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:41,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:41,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:41,332 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:41,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:41,346 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:41,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:41,365 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:41,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:41,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:41,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348794614] [2021-08-13 17:57:41,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348794614] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:41,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:41,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:41,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635392109] [2021-08-13 17:57:41,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:41,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:41,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:41,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:41,383 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:41,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 842 transitions, 59282 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:41,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:41,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:41,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:42,219 INFO L129 PetriNetUnfolder]: 220/2349 cut-off events. [2021-08-13 17:57:42,219 INFO L130 PetriNetUnfolder]: For 194785/232646 co-relation queries the response was YES. [2021-08-13 17:57:42,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33605 conditions, 2349 events. 220/2349 cut-off events. For 194785/232646 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31201 event pairs, 0 based on Foata normal form. 139/2407 useless extension candidates. Maximal degree in co-relation 27788. Up to 516 conditions per place. [2021-08-13 17:57:42,244 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 562 selfloop transitions, 184 changer transitions 75/841 dead transitions. [2021-08-13 17:57:42,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 841 transitions, 60852 flow [2021-08-13 17:57:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:42,245 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:42,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:42,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:42,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:42,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:42,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,247 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,247 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2021-08-13 17:57:42,247 INFO L482 AbstractCegarLoop]: Abstraction has has 304 places, 841 transitions, 60852 flow [2021-08-13 17:57:42,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,247 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:42,247 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] [2021-08-13 17:57:42,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 17:57:42,247 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:42,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2102673325, now seen corresponding path program 37 times [2021-08-13 17:57:42,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:42,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254144570] [2021-08-13 17:57:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:42,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:42,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:42,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:42,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:42,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:42,284 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:42,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:42,297 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:42,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:42,315 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:42,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:42,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:42,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254144570] [2021-08-13 17:57:42,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254144570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:42,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:42,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:42,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032071295] [2021-08-13 17:57:42,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:42,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:42,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:42,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:42,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 841 transitions, 60852 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:42,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:42,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:42,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:42,974 INFO L129 PetriNetUnfolder]: 219/2355 cut-off events. [2021-08-13 17:57:42,975 INFO L130 PetriNetUnfolder]: For 225215/270009 co-relation queries the response was YES. [2021-08-13 17:57:42,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34413 conditions, 2355 events. 219/2355 cut-off events. For 225215/270009 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31230 event pairs, 0 based on Foata normal form. 130/2405 useless extension candidates. Maximal degree in co-relation 28492. Up to 515 conditions per place. [2021-08-13 17:57:43,001 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 545 selfloop transitions, 194 changer transitions 81/840 dead transitions. [2021-08-13 17:57:43,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 840 transitions, 62418 flow [2021-08-13 17:57:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:43,002 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:43,002 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:43,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:43,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:43,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:43,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,003 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,003 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 267 predicate places. [2021-08-13 17:57:43,003 INFO L482 AbstractCegarLoop]: Abstraction has has 311 places, 840 transitions, 62418 flow [2021-08-13 17:57:43,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,003 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:43,003 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] [2021-08-13 17:57:43,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 17:57:43,004 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash -190290661, now seen corresponding path program 38 times [2021-08-13 17:57:43,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:43,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141180609] [2021-08-13 17:57:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:43,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:43,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:43,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:43,023 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:43,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:43,033 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:43,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:43,049 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:43,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:43,068 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:43,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:43,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:43,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141180609] [2021-08-13 17:57:43,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141180609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:43,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:43,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:43,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462298078] [2021-08-13 17:57:43,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:43,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:43,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:43,087 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:43,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 840 transitions, 62418 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:43,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:43,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:43,766 INFO L129 PetriNetUnfolder]: 219/2345 cut-off events. [2021-08-13 17:57:43,767 INFO L130 PetriNetUnfolder]: For 217173/257138 co-relation queries the response was YES. [2021-08-13 17:57:43,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35167 conditions, 2345 events. 219/2345 cut-off events. For 217173/257138 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31056 event pairs, 0 based on Foata normal form. 139/2404 useless extension candidates. Maximal degree in co-relation 29144. Up to 514 conditions per place. [2021-08-13 17:57:43,791 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 555 selfloop transitions, 183 changer transitions 81/839 dead transitions. [2021-08-13 17:57:43,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 839 transitions, 63980 flow [2021-08-13 17:57:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:43,793 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:43,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:43,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:43,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:43,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:43,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,794 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,794 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2021-08-13 17:57:43,794 INFO L482 AbstractCegarLoop]: Abstraction has has 318 places, 839 transitions, 63980 flow [2021-08-13 17:57:43,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,794 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:43,794 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] [2021-08-13 17:57:43,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 17:57:43,794 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740207, now seen corresponding path program 39 times [2021-08-13 17:57:43,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:43,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628025044] [2021-08-13 17:57:43,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:43,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:43,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:43,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:43,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:43,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:43,822 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:43,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:43,834 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:43,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:43,852 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:43,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:43,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:43,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628025044] [2021-08-13 17:57:43,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628025044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:43,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:43,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:43,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875397588] [2021-08-13 17:57:43,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:43,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:43,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:43,870 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:43,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 839 transitions, 63980 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:43,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:43,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:43,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:44,756 INFO L129 PetriNetUnfolder]: 219/2347 cut-off events. [2021-08-13 17:57:44,756 INFO L130 PetriNetUnfolder]: For 228860/269715 co-relation queries the response was YES. [2021-08-13 17:57:44,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35955 conditions, 2347 events. 219/2347 cut-off events. For 228860/269715 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31128 event pairs, 0 based on Foata normal form. 139/2406 useless extension candidates. Maximal degree in co-relation 29832. Up to 513 conditions per place. [2021-08-13 17:57:44,783 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 556 selfloop transitions, 181 changer transitions 81/838 dead transitions. [2021-08-13 17:57:44,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 838 transitions, 65538 flow [2021-08-13 17:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:44,784 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:44,784 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:44,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:44,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:44,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:44,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:44,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:44,785 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:44,785 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 281 predicate places. [2021-08-13 17:57:44,785 INFO L482 AbstractCegarLoop]: Abstraction has has 325 places, 838 transitions, 65538 flow [2021-08-13 17:57:44,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:44,785 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:44,786 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] [2021-08-13 17:57:44,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 17:57:44,786 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:44,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1406620425, now seen corresponding path program 40 times [2021-08-13 17:57:44,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:44,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757503459] [2021-08-13 17:57:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:44,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:44,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:44,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:44,810 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:44,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:44,819 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:44,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:44,831 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:44,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:44,849 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:44,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:44,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:44,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757503459] [2021-08-13 17:57:44,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757503459] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:44,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:44,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:44,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989899283] [2021-08-13 17:57:44,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:44,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:44,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:44,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:44,866 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:44,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 838 transitions, 65538 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:44,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:44,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:44,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:45,502 INFO L129 PetriNetUnfolder]: 220/2348 cut-off events. [2021-08-13 17:57:45,502 INFO L130 PetriNetUnfolder]: For 264537/313597 co-relation queries the response was YES. [2021-08-13 17:57:45,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36738 conditions, 2348 events. 220/2348 cut-off events. For 264537/313597 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31097 event pairs, 0 based on Foata normal form. 160/2429 useless extension candidates. Maximal degree in co-relation 30517. Up to 512 conditions per place. [2021-08-13 17:57:45,530 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 556 selfloop transitions, 180 changer transitions 81/837 dead transitions. [2021-08-13 17:57:45,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 837 transitions, 67092 flow [2021-08-13 17:57:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:45,531 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:45,531 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:45,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:45,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:45,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:45,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,533 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,533 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 288 predicate places. [2021-08-13 17:57:45,533 INFO L482 AbstractCegarLoop]: Abstraction has has 332 places, 837 transitions, 67092 flow [2021-08-13 17:57:45,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,533 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:45,533 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] [2021-08-13 17:57:45,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 17:57:45,533 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:45,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1946340419, now seen corresponding path program 41 times [2021-08-13 17:57:45,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:45,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941057598] [2021-08-13 17:57:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:45,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:45,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:45,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:45,552 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:45,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:45,562 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:45,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:45,575 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:45,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:45,593 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:45,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:45,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:45,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941057598] [2021-08-13 17:57:45,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941057598] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:45,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:45,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:45,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847180436] [2021-08-13 17:57:45,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:45,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:45,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:45,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:45,612 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:45,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 837 transitions, 67092 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:45,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:45,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:45,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:46,419 INFO L129 PetriNetUnfolder]: 219/2351 cut-off events. [2021-08-13 17:57:46,420 INFO L130 PetriNetUnfolder]: For 252316/295347 co-relation queries the response was YES. [2021-08-13 17:57:46,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37527 conditions, 2351 events. 219/2351 cut-off events. For 252316/295347 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31218 event pairs, 0 based on Foata normal form. 137/2408 useless extension candidates. Maximal degree in co-relation 31210. Up to 511 conditions per place. [2021-08-13 17:57:46,448 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 548 selfloop transitions, 171 changer transitions 97/836 dead transitions. [2021-08-13 17:57:46,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 836 transitions, 68642 flow [2021-08-13 17:57:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:46,449 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:46,449 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:46,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:46,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:46,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:46,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:46,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:46,450 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:46,450 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 295 predicate places. [2021-08-13 17:57:46,450 INFO L482 AbstractCegarLoop]: Abstraction has has 339 places, 836 transitions, 68642 flow [2021-08-13 17:57:46,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:46,450 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:46,451 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] [2021-08-13 17:57:46,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 17:57:46,451 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1035894327, now seen corresponding path program 42 times [2021-08-13 17:57:46,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:46,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202242561] [2021-08-13 17:57:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:46,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:46,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:46,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:46,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:46,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:46,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:46,506 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:46,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:46,525 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:46,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:46,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:46,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202242561] [2021-08-13 17:57:46,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202242561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:46,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:46,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:46,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013261591] [2021-08-13 17:57:46,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:46,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:46,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:46,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:46,543 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:46,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 836 transitions, 68642 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:46,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:46,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:46,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:47,649 INFO L129 PetriNetUnfolder]: 220/2576 cut-off events. [2021-08-13 17:57:47,649 INFO L130 PetriNetUnfolder]: For 283197/327322 co-relation queries the response was YES. [2021-08-13 17:57:47,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41124 conditions, 2576 events. 220/2576 cut-off events. For 283197/327322 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 35122 event pairs, 0 based on Foata normal form. 109/2599 useless extension candidates. Maximal degree in co-relation 33747. Up to 546 conditions per place. [2021-08-13 17:57:47,679 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 584 selfloop transitions, 189 changer transitions 99/892 dead transitions. [2021-08-13 17:57:47,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 892 transitions, 75090 flow [2021-08-13 17:57:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:47,680 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:47,680 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:47,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:47,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:47,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:47,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,681 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,681 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2021-08-13 17:57:47,681 INFO L482 AbstractCegarLoop]: Abstraction has has 346 places, 892 transitions, 75090 flow [2021-08-13 17:57:47,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,681 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:47,682 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:47,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 17:57:47,682 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:47,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1329069149, now seen corresponding path program 43 times [2021-08-13 17:57:47,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:47,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534264629] [2021-08-13 17:57:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:47,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:47,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:47,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:47,717 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:47,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:47,730 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:47,748 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:47,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:47,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:47,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534264629] [2021-08-13 17:57:47,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534264629] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:47,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:47,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:47,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666151173] [2021-08-13 17:57:47,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:47,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:47,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:47,766 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:47,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 892 transitions, 75090 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:47,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:47,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:47,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:48,642 INFO L129 PetriNetUnfolder]: 221/2574 cut-off events. [2021-08-13 17:57:48,642 INFO L130 PetriNetUnfolder]: For 326279/379821 co-relation queries the response was YES. [2021-08-13 17:57:48,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41949 conditions, 2574 events. 221/2574 cut-off events. For 326279/379821 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 35093 event pairs, 0 based on Foata normal form. 130/2614 useless extension candidates. Maximal degree in co-relation 34459. Up to 545 conditions per place. [2021-08-13 17:57:48,673 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 581 selfloop transitions, 191 changer transitions 99/891 dead transitions. [2021-08-13 17:57:48,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 891 transitions, 76746 flow [2021-08-13 17:57:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:48,674 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:48,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:48,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:48,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:48,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:48,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:48,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:48,676 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:48,676 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 309 predicate places. [2021-08-13 17:57:48,676 INFO L482 AbstractCegarLoop]: Abstraction has has 353 places, 891 transitions, 76746 flow [2021-08-13 17:57:48,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:48,676 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:48,676 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] [2021-08-13 17:57:48,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 17:57:48,676 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 206153001, now seen corresponding path program 44 times [2021-08-13 17:57:48,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:48,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36854202] [2021-08-13 17:57:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:48,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:48,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:48,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:48,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:48,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:48,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:48,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:48,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:48,795 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:48,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:48,814 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 17:57:48,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:48,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36854202] [2021-08-13 17:57:48,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36854202] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:48,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:48,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:48,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432624177] [2021-08-13 17:57:48,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:48,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:48,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:48,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:48,815 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:48,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 891 transitions, 76746 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:48,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:48,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:48,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:49,740 INFO L129 PetriNetUnfolder]: 220/2572 cut-off events. [2021-08-13 17:57:49,740 INFO L130 PetriNetUnfolder]: For 311842/358455 co-relation queries the response was YES. [2021-08-13 17:57:49,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42774 conditions, 2572 events. 220/2572 cut-off events. For 311842/358455 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 35034 event pairs, 0 based on Foata normal form. 111/2598 useless extension candidates. Maximal degree in co-relation 35173. Up to 544 conditions per place. [2021-08-13 17:57:49,772 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 581 selfloop transitions, 187 changer transitions 102/890 dead transitions. [2021-08-13 17:57:49,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 890 transitions, 78398 flow [2021-08-13 17:57:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:49,773 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:49,773 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:49,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:49,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:49,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:49,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:49,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:49,774 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:49,774 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 316 predicate places. [2021-08-13 17:57:49,774 INFO L482 AbstractCegarLoop]: Abstraction has has 360 places, 890 transitions, 78398 flow [2021-08-13 17:57:49,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:49,774 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:49,774 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] [2021-08-13 17:57:49,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 17:57:49,774 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:49,775 INFO L82 PathProgramCache]: Analyzing trace with hash -397625373, now seen corresponding path program 45 times [2021-08-13 17:57:49,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:49,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389518775] [2021-08-13 17:57:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:49,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:49,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:49,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:49,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:49,804 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:49,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:49,826 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:49,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:49,844 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:49,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:49,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:49,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389518775] [2021-08-13 17:57:49,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389518775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:49,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:49,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:49,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207800404] [2021-08-13 17:57:49,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:49,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:49,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:49,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:49,989 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:49,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 890 transitions, 78398 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:49,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:49,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:49,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:50,926 INFO L129 PetriNetUnfolder]: 220/2559 cut-off events. [2021-08-13 17:57:50,926 INFO L130 PetriNetUnfolder]: For 326169/373936 co-relation queries the response was YES. [2021-08-13 17:57:50,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43564 conditions, 2559 events. 220/2559 cut-off events. For 326169/373936 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 34838 event pairs, 0 based on Foata normal form. 111/2586 useless extension candidates. Maximal degree in co-relation 35854. Up to 543 conditions per place. [2021-08-13 17:57:50,964 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 575 selfloop transitions, 190 changer transitions 104/889 dead transitions. [2021-08-13 17:57:50,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 889 transitions, 80046 flow [2021-08-13 17:57:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:50,965 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:50,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:50,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,967 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2021-08-13 17:57:50,967 INFO L482 AbstractCegarLoop]: Abstraction has has 367 places, 889 transitions, 80046 flow [2021-08-13 17:57:50,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:50,967 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:50,967 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] [2021-08-13 17:57:50,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 17:57:50,968 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:50,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1218972797, now seen corresponding path program 46 times [2021-08-13 17:57:50,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:50,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391056366] [2021-08-13 17:57:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:50,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:50,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:50,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:50,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:50,997 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:57:50,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:57:51,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:51,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:51,039 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:51,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:51,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:51,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391056366] [2021-08-13 17:57:51,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391056366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:51,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:51,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:51,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373805149] [2021-08-13 17:57:51,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:51,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:51,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:51,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:51,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:51,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 889 transitions, 80046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:51,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:51,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:51,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:52,165 INFO L129 PetriNetUnfolder]: 220/2565 cut-off events. [2021-08-13 17:57:52,166 INFO L130 PetriNetUnfolder]: For 374691/432655 co-relation queries the response was YES. [2021-08-13 17:57:52,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44409 conditions, 2565 events. 220/2565 cut-off events. For 374691/432655 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 34920 event pairs, 0 based on Foata normal form. 130/2609 useless extension candidates. Maximal degree in co-relation 36592. Up to 542 conditions per place. [2021-08-13 17:57:52,197 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 573 selfloop transitions, 188 changer transitions 107/888 dead transitions. [2021-08-13 17:57:52,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 888 transitions, 81690 flow [2021-08-13 17:57:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:52,198 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:52,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:52,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:52,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:52,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:52,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,199 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2021-08-13 17:57:52,199 INFO L482 AbstractCegarLoop]: Abstraction has has 374 places, 888 transitions, 81690 flow [2021-08-13 17:57:52,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,199 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:52,199 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] [2021-08-13 17:57:52,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 17:57:52,200 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1134436223, now seen corresponding path program 47 times [2021-08-13 17:57:52,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:52,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201648544] [2021-08-13 17:57:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:52,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:52,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:52,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:52,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:52,226 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:52,238 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:57:52,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:57:52,255 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:52,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:52,381 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-08-13 17:57:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:52,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:52,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201648544] [2021-08-13 17:57:52,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201648544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:52,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:52,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:52,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263048447] [2021-08-13 17:57:52,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:52,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:52,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:52,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:52,383 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:52,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 888 transitions, 81690 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:52,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:52,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:52,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:53,378 INFO L129 PetriNetUnfolder]: 221/2573 cut-off events. [2021-08-13 17:57:53,379 INFO L130 PetriNetUnfolder]: For 354766/404829 co-relation queries the response was YES. [2021-08-13 17:57:53,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45254 conditions, 2573 events. 221/2573 cut-off events. For 354766/404829 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 35055 event pairs, 0 based on Foata normal form. 109/2594 useless extension candidates. Maximal degree in co-relation 37332. Up to 541 conditions per place. [2021-08-13 17:57:53,418 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 571 selfloop transitions, 183 changer transitions 113/887 dead transitions. [2021-08-13 17:57:53,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 887 transitions, 83330 flow [2021-08-13 17:57:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:53,419 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:53,419 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:53,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:53,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:53,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:53,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:53,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:53,420 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:53,420 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 337 predicate places. [2021-08-13 17:57:53,420 INFO L482 AbstractCegarLoop]: Abstraction has has 381 places, 887 transitions, 83330 flow [2021-08-13 17:57:53,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:53,421 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:53,421 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] [2021-08-13 17:57:53,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 17:57:53,421 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:53,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1035835787, now seen corresponding path program 48 times [2021-08-13 17:57:53,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:53,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862308514] [2021-08-13 17:57:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:53,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:53,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:53,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:53,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:53,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:53,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:53,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:53,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:57:53,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:53,472 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:53,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:53,490 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:53,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:53,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:53,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862308514] [2021-08-13 17:57:53,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862308514] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:53,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:53,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:53,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339186272] [2021-08-13 17:57:53,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:53,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:53,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:53,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:53,507 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:53,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 887 transitions, 83330 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:53,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:53,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:53,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:54,711 INFO L129 PetriNetUnfolder]: 219/2798 cut-off events. [2021-08-13 17:57:54,712 INFO L130 PetriNetUnfolder]: For 429936/490235 co-relation queries the response was YES. [2021-08-13 17:57:54,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49414 conditions, 2798 events. 219/2798 cut-off events. For 429936/490235 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 39053 event pairs, 0 based on Foata normal form. 128/2833 useless extension candidates. Maximal degree in co-relation 40141. Up to 598 conditions per place. [2021-08-13 17:57:54,750 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 613 selfloop transitions, 199 changer transitions 115/947 dead transitions. [2021-08-13 17:57:54,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 947 transitions, 90944 flow [2021-08-13 17:57:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:54,752 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:54,752 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:54,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:54,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:54,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:54,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:54,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:54,753 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:54,753 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2021-08-13 17:57:54,753 INFO L482 AbstractCegarLoop]: Abstraction has has 388 places, 947 transitions, 90944 flow [2021-08-13 17:57:54,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:54,753 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:54,753 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] [2021-08-13 17:57:54,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 17:57:54,753 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:54,754 INFO L82 PathProgramCache]: Analyzing trace with hash 979094025, now seen corresponding path program 49 times [2021-08-13 17:57:54,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:54,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255290624] [2021-08-13 17:57:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:54,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:54,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:54,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:54,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:54,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:54,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:54,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:54,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:54,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:57:54,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:54,801 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:54,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:54,819 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:54,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:54,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:54,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255290624] [2021-08-13 17:57:54,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255290624] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:54,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:54,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:54,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096890059] [2021-08-13 17:57:54,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:54,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:54,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:54,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:54,839 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:54,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 947 transitions, 90944 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:54,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:54,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:54,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:56,114 INFO L129 PetriNetUnfolder]: 218/2794 cut-off events. [2021-08-13 17:57:56,114 INFO L130 PetriNetUnfolder]: For 571775/680439 co-relation queries the response was YES. [2021-08-13 17:57:56,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50286 conditions, 2794 events. 218/2794 cut-off events. For 571775/680439 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38898 event pairs, 0 based on Foata normal form. 194/2895 useless extension candidates. Maximal degree in co-relation 40888. Up to 597 conditions per place. [2021-08-13 17:57:56,158 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 610 selfloop transitions, 198 changer transitions 118/946 dead transitions. [2021-08-13 17:57:56,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 946 transitions, 92698 flow [2021-08-13 17:57:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:56,159 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:56,159 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:56,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:56,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:56,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:56,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:56,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:56,160 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:56,160 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2021-08-13 17:57:56,160 INFO L482 AbstractCegarLoop]: Abstraction has has 395 places, 946 transitions, 92698 flow [2021-08-13 17:57:56,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:56,160 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:56,160 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] [2021-08-13 17:57:56,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 17:57:56,160 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1351968765, now seen corresponding path program 50 times [2021-08-13 17:57:56,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:56,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378412322] [2021-08-13 17:57:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:56,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:56,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:56,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:56,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:56,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:56,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:56,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:56,189 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:56,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:56,203 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:56,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:56,220 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:56,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:56,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:56,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378412322] [2021-08-13 17:57:56,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378412322] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:56,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:56,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:56,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451735936] [2021-08-13 17:57:56,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:56,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:56,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:56,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:56,238 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:56,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 946 transitions, 92698 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:56,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:56,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:56,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:57,552 INFO L129 PetriNetUnfolder]: 219/2798 cut-off events. [2021-08-13 17:57:57,552 INFO L130 PetriNetUnfolder]: For 474015/537875 co-relation queries the response was YES. [2021-08-13 17:57:57,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51174 conditions, 2798 events. 219/2798 cut-off events. For 474015/537875 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 39039 event pairs, 0 based on Foata normal form. 130/2833 useless extension candidates. Maximal degree in co-relation 41653. Up to 596 conditions per place. [2021-08-13 17:57:57,589 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 609 selfloop transitions, 198 changer transitions 118/945 dead transitions. [2021-08-13 17:57:57,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 945 transitions, 94448 flow [2021-08-13 17:57:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:57,590 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:57,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:57,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:57,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:57,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:57,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:57,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:57,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:57,592 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 358 predicate places. [2021-08-13 17:57:57,592 INFO L482 AbstractCegarLoop]: Abstraction has has 402 places, 945 transitions, 94448 flow [2021-08-13 17:57:57,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:57,592 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:57,592 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] [2021-08-13 17:57:57,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 17:57:57,592 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:57,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1832296861, now seen corresponding path program 51 times [2021-08-13 17:57:57,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:57,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055000445] [2021-08-13 17:57:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:57,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:57,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:57,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:57,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:57,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:57,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:57,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:57,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:57,617 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:57,629 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:57,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:57,646 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:57,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:57,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:57,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055000445] [2021-08-13 17:57:57,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055000445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:57,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:57,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:57,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150466390] [2021-08-13 17:57:57,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:57,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:57,665 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:57,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 945 transitions, 94448 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:57,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:57,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:57,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:58,958 INFO L129 PetriNetUnfolder]: 218/2794 cut-off events. [2021-08-13 17:57:58,958 INFO L130 PetriNetUnfolder]: For 455446/510771 co-relation queries the response was YES. [2021-08-13 17:57:58,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52040 conditions, 2794 events. 218/2794 cut-off events. For 455446/510771 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38930 event pairs, 0 based on Foata normal form. 111/2813 useless extension candidates. Maximal degree in co-relation 42398. Up to 595 conditions per place. [2021-08-13 17:57:59,001 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 609 selfloop transitions, 192 changer transitions 123/944 dead transitions. [2021-08-13 17:57:59,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 944 transitions, 96194 flow [2021-08-13 17:57:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:57:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:57:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:57:59,002 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:57:59,002 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:57:59,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:57:59,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:57:59,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:59,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:59,004 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:59,004 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2021-08-13 17:57:59,004 INFO L482 AbstractCegarLoop]: Abstraction has has 409 places, 944 transitions, 96194 flow [2021-08-13 17:57:59,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:59,004 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:59,004 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] [2021-08-13 17:57:59,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 17:57:59,004 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:59,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2006396723, now seen corresponding path program 52 times [2021-08-13 17:57:59,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:59,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543088372] [2021-08-13 17:57:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:59,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:59,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:59,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:59,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:59,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:59,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:59,046 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:57:59,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:57:59,063 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:57:59,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:57:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:59,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:59,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543088372] [2021-08-13 17:57:59,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543088372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:59,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:59,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:57:59,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965446277] [2021-08-13 17:57:59,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:57:59,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:59,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:57:59,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:57:59,083 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:57:59,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 944 transitions, 96194 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:59,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:59,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:57:59,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:00,421 INFO L129 PetriNetUnfolder]: 218/2791 cut-off events. [2021-08-13 17:58:00,422 INFO L130 PetriNetUnfolder]: For 704533/837186 co-relation queries the response was YES. [2021-08-13 17:58:00,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52908 conditions, 2791 events. 218/2791 cut-off events. For 704533/837186 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38923 event pairs, 0 based on Foata normal form. 219/2917 useless extension candidates. Maximal degree in co-relation 43147. Up to 594 conditions per place. [2021-08-13 17:58:00,459 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 608 selfloop transitions, 190 changer transitions 125/943 dead transitions. [2021-08-13 17:58:00,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 943 transitions, 97936 flow [2021-08-13 17:58:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:00,460 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:00,460 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:00,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:00,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:00,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:00,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:00,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:00,461 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:00,461 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 372 predicate places. [2021-08-13 17:58:00,461 INFO L482 AbstractCegarLoop]: Abstraction has has 416 places, 943 transitions, 97936 flow [2021-08-13 17:58:00,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:00,461 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:00,461 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] [2021-08-13 17:58:00,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 17:58:00,462 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash 185333151, now seen corresponding path program 53 times [2021-08-13 17:58:00,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:00,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248178297] [2021-08-13 17:58:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:00,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:00,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:00,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:00,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:00,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:00,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:00,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:00,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:00,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:00,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:00,499 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:00,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:00,516 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:00,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:00,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:00,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248178297] [2021-08-13 17:58:00,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248178297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:00,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:00,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:00,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780430436] [2021-08-13 17:58:00,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:00,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:00,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:00,534 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:00,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 943 transitions, 97936 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:00,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:00,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:00,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:01,662 INFO L129 PetriNetUnfolder]: 219/2795 cut-off events. [2021-08-13 17:58:01,662 INFO L130 PetriNetUnfolder]: For 671681/790053 co-relation queries the response was YES. [2021-08-13 17:58:01,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53790 conditions, 2795 events. 219/2795 cut-off events. For 671681/790053 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 38989 event pairs, 0 based on Foata normal form. 192/2892 useless extension candidates. Maximal degree in co-relation 43912. Up to 593 conditions per place. [2021-08-13 17:58:01,701 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 606 selfloop transitions, 186 changer transitions 130/942 dead transitions. [2021-08-13 17:58:01,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 942 transitions, 99674 flow [2021-08-13 17:58:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:01,702 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:01,702 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:01,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:01,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:01,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:01,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,703 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,703 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2021-08-13 17:58:01,703 INFO L482 AbstractCegarLoop]: Abstraction has has 423 places, 942 transitions, 99674 flow [2021-08-13 17:58:01,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,703 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:01,703 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] [2021-08-13 17:58:01,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 17:58:01,703 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash 28103605, now seen corresponding path program 54 times [2021-08-13 17:58:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:01,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671357625] [2021-08-13 17:58:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:01,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:01,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:01,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:01,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:01,751 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:01,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:01,772 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:01,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:01,797 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:01,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:01,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671357625] [2021-08-13 17:58:01,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671357625] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:01,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:01,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:01,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388563100] [2021-08-13 17:58:01,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:01,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:01,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:01,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:01,813 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:01,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 942 transitions, 99674 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:01,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:01,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:01,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:03,558 INFO L129 PetriNetUnfolder]: 245/3676 cut-off events. [2021-08-13 17:58:03,559 INFO L130 PetriNetUnfolder]: For 895032/1047808 co-relation queries the response was YES. [2021-08-13 17:58:03,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69876 conditions, 3676 events. 245/3676 cut-off events. For 895032/1047808 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54601 event pairs, 0 based on Foata normal form. 199/3757 useless extension candidates. Maximal degree in co-relation 55475. Up to 755 conditions per place. [2021-08-13 17:58:03,608 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 794 selfloop transitions, 249 changer transitions 130/1193 dead transitions. [2021-08-13 17:58:03,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1193 transitions, 129128 flow [2021-08-13 17:58:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:03,609 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:03,609 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:03,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:03,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:03,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:03,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:03,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:03,613 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:03,613 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 386 predicate places. [2021-08-13 17:58:03,613 INFO L482 AbstractCegarLoop]: Abstraction has has 430 places, 1193 transitions, 129128 flow [2021-08-13 17:58:03,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:03,613 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:03,613 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:03,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 17:58:03,613 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:03,613 INFO L82 PathProgramCache]: Analyzing trace with hash 358661199, now seen corresponding path program 55 times [2021-08-13 17:58:03,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:03,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476438400] [2021-08-13 17:58:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:03,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:03,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:03,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:03,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:03,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:03,798 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:03,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:03,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:03,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:03,833 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:03,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:03,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:03,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476438400] [2021-08-13 17:58:03,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476438400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:03,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:03,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:03,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824721456] [2021-08-13 17:58:03,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:03,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:03,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:03,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:03,853 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:03,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1193 transitions, 129128 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:03,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:03,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:03,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:05,845 INFO L129 PetriNetUnfolder]: 245/3673 cut-off events. [2021-08-13 17:58:05,846 INFO L130 PetriNetUnfolder]: For 695051/774602 co-relation queries the response was YES. [2021-08-13 17:58:05,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70988 conditions, 3673 events. 245/3673 cut-off events. For 695051/774602 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54580 event pairs, 0 based on Foata normal form. 140/3697 useless extension candidates. Maximal degree in co-relation 56398. Up to 754 conditions per place. [2021-08-13 17:58:05,899 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 788 selfloop transitions, 254 changer transitions 130/1192 dead transitions. [2021-08-13 17:58:05,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1192 transitions, 131362 flow [2021-08-13 17:58:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:05,900 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:05,900 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:05,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:05,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:05,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:05,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:05,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:05,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:05,902 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2021-08-13 17:58:05,902 INFO L482 AbstractCegarLoop]: Abstraction has has 437 places, 1192 transitions, 131362 flow [2021-08-13 17:58:05,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:05,902 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:05,902 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] [2021-08-13 17:58:05,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 17:58:05,902 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:05,902 INFO L82 PathProgramCache]: Analyzing trace with hash -289771861, now seen corresponding path program 56 times [2021-08-13 17:58:05,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:05,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463779927] [2021-08-13 17:58:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:05,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:05,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:05,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:05,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:05,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:05,951 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:05,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:05,961 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:05,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:05,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:05,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:06,004 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:06,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:06,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:06,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463779927] [2021-08-13 17:58:06,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463779927] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:06,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:06,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:06,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877041061] [2021-08-13 17:58:06,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:06,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:06,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:06,038 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:06,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1192 transitions, 131362 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:06,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:06,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:06,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:08,083 INFO L129 PetriNetUnfolder]: 245/3676 cut-off events. [2021-08-13 17:58:08,083 INFO L130 PetriNetUnfolder]: For 664762/733060 co-relation queries the response was YES. [2021-08-13 17:58:08,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72115 conditions, 3676 events. 245/3676 cut-off events. For 664762/733060 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54616 event pairs, 0 based on Foata normal form. 113/3671 useless extension candidates. Maximal degree in co-relation 57338. Up to 753 conditions per place. [2021-08-13 17:58:08,128 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 786 selfloop transitions, 255 changer transitions 130/1191 dead transitions. [2021-08-13 17:58:08,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1191 transitions, 133592 flow [2021-08-13 17:58:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:08,129 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:08,129 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:08,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:08,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:08,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:08,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:08,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:08,130 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:08,130 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 400 predicate places. [2021-08-13 17:58:08,130 INFO L482 AbstractCegarLoop]: Abstraction has has 444 places, 1191 transitions, 133592 flow [2021-08-13 17:58:08,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:08,130 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:08,130 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] [2021-08-13 17:58:08,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 17:58:08,130 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:08,130 INFO L82 PathProgramCache]: Analyzing trace with hash 575310327, now seen corresponding path program 57 times [2021-08-13 17:58:08,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:08,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514785354] [2021-08-13 17:58:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:08,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:08,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:08,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:08,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:08,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:08,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:08,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:08,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:08,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:08,242 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:08,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:08,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514785354] [2021-08-13 17:58:08,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514785354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:08,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:08,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:08,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397998335] [2021-08-13 17:58:08,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:08,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:08,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:08,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:08,275 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:08,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1191 transitions, 133592 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:08,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:08,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:08,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:10,606 INFO L129 PetriNetUnfolder]: 245/3671 cut-off events. [2021-08-13 17:58:10,607 INFO L130 PetriNetUnfolder]: For 814073/920486 co-relation queries the response was YES. [2021-08-13 17:58:10,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73218 conditions, 3671 events. 245/3671 cut-off events. For 814073/920486 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54430 event pairs, 0 based on Foata normal form. 184/3739 useless extension candidates. Maximal degree in co-relation 58256. Up to 752 conditions per place. [2021-08-13 17:58:10,662 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 787 selfloop transitions, 253 changer transitions 130/1190 dead transitions. [2021-08-13 17:58:10,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1190 transitions, 135818 flow [2021-08-13 17:58:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:10,663 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:10,663 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:10,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:10,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:10,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:10,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,664 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,665 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 407 predicate places. [2021-08-13 17:58:10,665 INFO L482 AbstractCegarLoop]: Abstraction has has 451 places, 1190 transitions, 135818 flow [2021-08-13 17:58:10,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,665 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:10,666 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] [2021-08-13 17:58:10,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 17:58:10,666 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 171400321, now seen corresponding path program 58 times [2021-08-13 17:58:10,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:10,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431409688] [2021-08-13 17:58:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:10,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:10,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:10,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:10,687 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:10,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:10,701 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:10,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:10,725 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:10,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:10,741 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:10,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:10,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:10,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431409688] [2021-08-13 17:58:10,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431409688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:10,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:10,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:10,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165436261] [2021-08-13 17:58:10,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:10,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:10,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:10,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:10,853 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:10,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 1190 transitions, 135818 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:10,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:10,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:10,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:12,884 INFO L129 PetriNetUnfolder]: 244/3716 cut-off events. [2021-08-13 17:58:12,884 INFO L130 PetriNetUnfolder]: For 852484/962887 co-relation queries the response was YES. [2021-08-13 17:58:12,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75055 conditions, 3716 events. 244/3716 cut-off events. For 852484/962887 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55425 event pairs, 0 based on Foata normal form. 184/3784 useless extension candidates. Maximal degree in co-relation 59600. Up to 758 conditions per place. [2021-08-13 17:58:12,936 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 798 selfloop transitions, 250 changer transitions 132/1200 dead transitions. [2021-08-13 17:58:12,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1200 transitions, 139338 flow [2021-08-13 17:58:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:12,938 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:12,938 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:12,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:12,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:12,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:12,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:12,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:12,939 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:12,939 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2021-08-13 17:58:12,939 INFO L482 AbstractCegarLoop]: Abstraction has has 458 places, 1200 transitions, 139338 flow [2021-08-13 17:58:12,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:12,939 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:12,939 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] [2021-08-13 17:58:12,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 17:58:12,939 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2104679181, now seen corresponding path program 59 times [2021-08-13 17:58:12,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:12,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018980330] [2021-08-13 17:58:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:12,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:12,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:12,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:12,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:12,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:13,103 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-08-13 17:58:13,105 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:13,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:13,133 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:13,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:13,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:13,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018980330] [2021-08-13 17:58:13,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018980330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:13,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:13,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:13,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277676730] [2021-08-13 17:58:13,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:13,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:13,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:13,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:13,150 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:13,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1200 transitions, 139338 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:13,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:13,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:13,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:15,317 INFO L129 PetriNetUnfolder]: 244/3718 cut-off events. [2021-08-13 17:58:15,318 INFO L130 PetriNetUnfolder]: For 994348/1150427 co-relation queries the response was YES. [2021-08-13 17:58:15,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76184 conditions, 3718 events. 244/3718 cut-off events. For 994348/1150427 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55437 event pairs, 0 based on Foata normal form. 214/3816 useless extension candidates. Maximal degree in co-relation 60543. Up to 757 conditions per place. [2021-08-13 17:58:15,369 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 796 selfloop transitions, 246 changer transitions 137/1199 dead transitions. [2021-08-13 17:58:15,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1199 transitions, 141578 flow [2021-08-13 17:58:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:15,370 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:15,371 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:15,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:15,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:15,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:15,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:15,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:15,372 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:15,372 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 421 predicate places. [2021-08-13 17:58:15,372 INFO L482 AbstractCegarLoop]: Abstraction has has 465 places, 1199 transitions, 141578 flow [2021-08-13 17:58:15,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:15,372 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:15,372 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] [2021-08-13 17:58:15,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 17:58:15,372 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1475531183, now seen corresponding path program 60 times [2021-08-13 17:58:15,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:15,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980482436] [2021-08-13 17:58:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:15,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:15,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:15,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:15,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:15,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:15,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:15,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:15,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:15,435 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:15,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:15,461 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:15,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:15,476 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:15,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:15,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:15,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980482436] [2021-08-13 17:58:15,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980482436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:15,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:15,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:15,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911755015] [2021-08-13 17:58:15,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:15,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:15,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:15,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:15,504 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:15,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1199 transitions, 141578 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:15,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:15,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:15,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:17,705 INFO L129 PetriNetUnfolder]: 244/3718 cut-off events. [2021-08-13 17:58:17,706 INFO L130 PetriNetUnfolder]: For 1114649/1303207 co-relation queries the response was YES. [2021-08-13 17:58:17,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77307 conditions, 3718 events. 244/3718 cut-off events. For 1114649/1303207 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55394 event pairs, 0 based on Foata normal form. 235/3834 useless extension candidates. Maximal degree in co-relation 61482. Up to 756 conditions per place. [2021-08-13 17:58:17,755 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 793 selfloop transitions, 246 changer transitions 139/1198 dead transitions. [2021-08-13 17:58:17,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1198 transitions, 143814 flow [2021-08-13 17:58:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:17,756 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:17,757 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:17,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:17,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:17,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:17,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,758 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 428 predicate places. [2021-08-13 17:58:17,758 INFO L482 AbstractCegarLoop]: Abstraction has has 472 places, 1198 transitions, 143814 flow [2021-08-13 17:58:17,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,758 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:17,758 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] [2021-08-13 17:58:17,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-13 17:58:17,758 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1649531573, now seen corresponding path program 61 times [2021-08-13 17:58:17,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:17,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799768704] [2021-08-13 17:58:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:17,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:17,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:17,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:17,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:17,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:17,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:17,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:17,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:17,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:17,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:17,814 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:17,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:17,839 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:17,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:17,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:17,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799768704] [2021-08-13 17:58:17,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799768704] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:17,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:17,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:17,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760603540] [2021-08-13 17:58:17,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:17,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:17,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:17,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:17,855 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:17,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1198 transitions, 143814 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:17,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:17,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:17,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:20,061 INFO L129 PetriNetUnfolder]: 244/3717 cut-off events. [2021-08-13 17:58:20,061 INFO L130 PetriNetUnfolder]: For 867760/965999 co-relation queries the response was YES. [2021-08-13 17:58:20,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78424 conditions, 3717 events. 244/3717 cut-off events. For 867760/965999 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55426 event pairs, 0 based on Foata normal form. 128/3726 useless extension candidates. Maximal degree in co-relation 62417. Up to 755 conditions per place. [2021-08-13 17:58:20,112 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 783 selfloop transitions, 255 changer transitions 139/1197 dead transitions. [2021-08-13 17:58:20,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1197 transitions, 146046 flow [2021-08-13 17:58:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:20,113 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:20,113 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:20,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:20,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:20,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:20,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:20,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:20,114 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:20,114 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 435 predicate places. [2021-08-13 17:58:20,114 INFO L482 AbstractCegarLoop]: Abstraction has has 479 places, 1197 transitions, 146046 flow [2021-08-13 17:58:20,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:20,114 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:20,114 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] [2021-08-13 17:58:20,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-13 17:58:20,114 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash 468627889, now seen corresponding path program 62 times [2021-08-13 17:58:20,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:20,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104188338] [2021-08-13 17:58:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:20,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:20,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:20,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:20,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:20,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:20,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:20,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:20,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:20,143 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:20,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:20,154 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:20,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:20,171 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:20,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:20,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:20,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104188338] [2021-08-13 17:58:20,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104188338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:20,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:20,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:20,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881091170] [2021-08-13 17:58:20,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:20,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:20,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:20,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:20,187 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:20,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1197 transitions, 146046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:20,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:20,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:20,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:22,603 INFO L129 PetriNetUnfolder]: 244/3716 cut-off events. [2021-08-13 17:58:22,603 INFO L130 PetriNetUnfolder]: For 823219/906097 co-relation queries the response was YES. [2021-08-13 17:58:22,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79539 conditions, 3716 events. 244/3716 cut-off events. For 823219/906097 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55364 event pairs, 0 based on Foata normal form. 111/3708 useless extension candidates. Maximal degree in co-relation 63352. Up to 754 conditions per place. [2021-08-13 17:58:22,687 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 782 selfloop transitions, 255 changer transitions 139/1196 dead transitions. [2021-08-13 17:58:22,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1196 transitions, 148274 flow [2021-08-13 17:58:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:22,689 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:22,689 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:22,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:22,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:22,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:22,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:22,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:22,690 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:22,690 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2021-08-13 17:58:22,690 INFO L482 AbstractCegarLoop]: Abstraction has has 486 places, 1196 transitions, 148274 flow [2021-08-13 17:58:22,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:22,690 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:22,691 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] [2021-08-13 17:58:22,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-13 17:58:22,691 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1756983537, now seen corresponding path program 63 times [2021-08-13 17:58:22,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:22,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579974893] [2021-08-13 17:58:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:22,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:22,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:22,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:22,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:22,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:22,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:22,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:22,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:22,724 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:22,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:22,750 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:22,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:22,773 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:22,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:22,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:22,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579974893] [2021-08-13 17:58:22,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579974893] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:22,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:22,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:22,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13079792] [2021-08-13 17:58:22,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:22,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:22,796 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:22,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1196 transitions, 148274 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:22,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:22,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:22,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:25,085 INFO L129 PetriNetUnfolder]: 244/3713 cut-off events. [2021-08-13 17:58:25,085 INFO L130 PetriNetUnfolder]: For 927486/1032097 co-relation queries the response was YES. [2021-08-13 17:58:25,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80646 conditions, 3713 events. 244/3713 cut-off events. For 927486/1032097 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55291 event pairs, 0 based on Foata normal form. 128/3724 useless extension candidates. Maximal degree in co-relation 64281. Up to 753 conditions per place. [2021-08-13 17:58:25,287 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 777 selfloop transitions, 243 changer transitions 155/1195 dead transitions. [2021-08-13 17:58:25,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1195 transitions, 150498 flow [2021-08-13 17:58:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:25,288 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:25,288 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:25,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:25,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:25,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:25,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,290 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 449 predicate places. [2021-08-13 17:58:25,290 INFO L482 AbstractCegarLoop]: Abstraction has has 493 places, 1195 transitions, 150498 flow [2021-08-13 17:58:25,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,290 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:25,290 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:25,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-13 17:58:25,290 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:25,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:25,290 INFO L82 PathProgramCache]: Analyzing trace with hash -937552063, now seen corresponding path program 64 times [2021-08-13 17:58:25,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:25,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346135179] [2021-08-13 17:58:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:25,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:25,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:25,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:25,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:25,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:25,323 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:25,343 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:25,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:25,360 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:25,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:25,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:25,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346135179] [2021-08-13 17:58:25,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346135179] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:25,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:25,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:25,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408759044] [2021-08-13 17:58:25,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:25,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:25,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:25,379 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:25,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1195 transitions, 150498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:25,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:25,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:25,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:27,592 INFO L129 PetriNetUnfolder]: 244/3716 cut-off events. [2021-08-13 17:58:27,592 INFO L130 PetriNetUnfolder]: For 889785/978407 co-relation queries the response was YES. [2021-08-13 17:58:27,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81767 conditions, 3716 events. 244/3716 cut-off events. For 889785/978407 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55392 event pairs, 0 based on Foata normal form. 113/3711 useless extension candidates. Maximal degree in co-relation 65226. Up to 752 conditions per place. [2021-08-13 17:58:27,645 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 775 selfloop transitions, 242 changer transitions 157/1194 dead transitions. [2021-08-13 17:58:27,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1194 transitions, 152718 flow [2021-08-13 17:58:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:27,646 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:27,646 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:27,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:27,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:27,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:27,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:27,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:27,647 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:27,647 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-08-13 17:58:27,647 INFO L482 AbstractCegarLoop]: Abstraction has has 500 places, 1194 transitions, 152718 flow [2021-08-13 17:58:27,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:27,647 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:27,647 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] [2021-08-13 17:58:27,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-13 17:58:27,647 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:27,648 INFO L82 PathProgramCache]: Analyzing trace with hash 631145331, now seen corresponding path program 65 times [2021-08-13 17:58:27,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:27,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575552793] [2021-08-13 17:58:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:27,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:27,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:27,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:27,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:27,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:27,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:27,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:27,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:27,679 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:27,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:27,691 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:27,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:27,708 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:27,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:27,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:27,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575552793] [2021-08-13 17:58:27,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575552793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:27,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:27,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:27,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018196941] [2021-08-13 17:58:27,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:27,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:27,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:27,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:27,727 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:27,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1194 transitions, 152718 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:27,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:27,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:27,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:29,898 INFO L129 PetriNetUnfolder]: 244/3710 cut-off events. [2021-08-13 17:58:29,899 INFO L130 PetriNetUnfolder]: For 1325777/1545569 co-relation queries the response was YES. [2021-08-13 17:58:29,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82863 conditions, 3710 events. 244/3710 cut-off events. For 1325777/1545569 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55242 event pairs, 0 based on Foata normal form. 223/3816 useless extension candidates. Maximal degree in co-relation 66148. Up to 751 conditions per place. [2021-08-13 17:58:29,952 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 767 selfloop transitions, 249 changer transitions 157/1193 dead transitions. [2021-08-13 17:58:29,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1193 transitions, 154934 flow [2021-08-13 17:58:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:29,953 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:29,953 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:29,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:29,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:29,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:29,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,954 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,954 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 463 predicate places. [2021-08-13 17:58:29,954 INFO L482 AbstractCegarLoop]: Abstraction has has 507 places, 1193 transitions, 154934 flow [2021-08-13 17:58:29,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:29,954 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:29,954 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] [2021-08-13 17:58:29,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-13 17:58:29,954 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:29,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash -91405923, now seen corresponding path program 66 times [2021-08-13 17:58:29,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:29,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096761004] [2021-08-13 17:58:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:29,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:29,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:29,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:29,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:29,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:29,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:29,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:29,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:29,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:29,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:30,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:30,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:30,019 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:30,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:30,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:30,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096761004] [2021-08-13 17:58:30,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096761004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:30,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:30,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:30,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147946480] [2021-08-13 17:58:30,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:30,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:30,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:30,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:30,038 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:30,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 1193 transitions, 154934 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:30,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:30,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:30,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:32,419 INFO L129 PetriNetUnfolder]: 244/3710 cut-off events. [2021-08-13 17:58:32,419 INFO L130 PetriNetUnfolder]: For 936036/1028610 co-relation queries the response was YES. [2021-08-13 17:58:32,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83973 conditions, 3710 events. 244/3710 cut-off events. For 936036/1028610 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55259 event pairs, 0 based on Foata normal form. 107/3700 useless extension candidates. Maximal degree in co-relation 67086. Up to 750 conditions per place. [2021-08-13 17:58:32,471 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 766 selfloop transitions, 244 changer transitions 162/1192 dead transitions. [2021-08-13 17:58:32,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1192 transitions, 157146 flow [2021-08-13 17:58:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:32,472 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:32,472 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:32,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:32,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:32,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:32,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:32,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:32,473 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:32,473 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 470 predicate places. [2021-08-13 17:58:32,473 INFO L482 AbstractCegarLoop]: Abstraction has has 514 places, 1192 transitions, 157146 flow [2021-08-13 17:58:32,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:32,473 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:32,473 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] [2021-08-13 17:58:32,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-13 17:58:32,473 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:32,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1405503585, now seen corresponding path program 67 times [2021-08-13 17:58:32,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:32,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113398315] [2021-08-13 17:58:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:32,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:32,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:32,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:32,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:32,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:32,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:32,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:32,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:32,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:32,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:32,524 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:32,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:32,543 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:32,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:32,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:32,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113398315] [2021-08-13 17:58:32,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113398315] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:32,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:32,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:32,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654462160] [2021-08-13 17:58:32,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:32,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:32,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:32,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:32,562 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:32,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 1192 transitions, 157146 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:32,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:32,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:32,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:34,886 INFO L129 PetriNetUnfolder]: 244/3706 cut-off events. [2021-08-13 17:58:34,886 INFO L130 PetriNetUnfolder]: For 1141664/1286934 co-relation queries the response was YES. [2021-08-13 17:58:34,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85069 conditions, 3706 events. 244/3706 cut-off events. For 1141664/1286934 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55228 event pairs, 0 based on Foata normal form. 170/3760 useless extension candidates. Maximal degree in co-relation 68012. Up to 749 conditions per place. [2021-08-13 17:58:34,939 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 767 selfloop transitions, 239 changer transitions 165/1191 dead transitions. [2021-08-13 17:58:34,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1191 transitions, 159354 flow [2021-08-13 17:58:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:34,940 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:34,940 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:34,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:34,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:34,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:34,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:34,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:34,941 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:34,942 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 477 predicate places. [2021-08-13 17:58:34,942 INFO L482 AbstractCegarLoop]: Abstraction has has 521 places, 1191 transitions, 159354 flow [2021-08-13 17:58:34,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:34,942 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:34,942 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:34,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-13 17:58:34,942 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:34,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1200613371, now seen corresponding path program 68 times [2021-08-13 17:58:34,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:34,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017449770] [2021-08-13 17:58:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:34,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:34,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:34,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:34,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:34,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:34,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:34,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:34,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:34,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:58:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:34,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:34,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:35,014 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:35,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:35,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:35,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017449770] [2021-08-13 17:58:35,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017449770] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:35,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:35,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:35,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100690188] [2021-08-13 17:58:35,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:35,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:35,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:35,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:35,033 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:35,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1191 transitions, 159354 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:35,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:35,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:35,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:37,466 INFO L129 PetriNetUnfolder]: 244/3705 cut-off events. [2021-08-13 17:58:37,466 INFO L130 PetriNetUnfolder]: For 1343792/1544167 co-relation queries the response was YES. [2021-08-13 17:58:37,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86172 conditions, 3705 events. 244/3705 cut-off events. For 1343792/1544167 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55171 event pairs, 0 based on Foata normal form. 202/3791 useless extension candidates. Maximal degree in co-relation 68947. Up to 748 conditions per place. [2021-08-13 17:58:37,521 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 764 selfloop transitions, 239 changer transitions 167/1190 dead transitions. [2021-08-13 17:58:37,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1190 transitions, 161558 flow [2021-08-13 17:58:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:37,522 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:37,522 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:37,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:37,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:37,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:37,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:37,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:37,523 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:37,524 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 484 predicate places. [2021-08-13 17:58:37,524 INFO L482 AbstractCegarLoop]: Abstraction has has 528 places, 1190 transitions, 161558 flow [2021-08-13 17:58:37,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:37,524 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:37,524 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:37,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-13 17:58:37,524 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1778700025, now seen corresponding path program 69 times [2021-08-13 17:58:37,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:37,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084401920] [2021-08-13 17:58:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:37,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:37,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:37,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:37,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:37,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:37,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:37,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:37,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:37,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:58:37,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:37,577 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:37,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:37,595 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:37,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:37,706 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-08-13 17:58:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:37,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:37,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084401920] [2021-08-13 17:58:37,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084401920] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:37,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:37,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:37,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019243281] [2021-08-13 17:58:37,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:37,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:37,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:37,707 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:37,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1190 transitions, 161558 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:37,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:37,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:37,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:39,896 INFO L129 PetriNetUnfolder]: 244/3707 cut-off events. [2021-08-13 17:58:39,896 INFO L130 PetriNetUnfolder]: For 1119420/1243101 co-relation queries the response was YES. [2021-08-13 17:58:39,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87282 conditions, 3707 events. 244/3707 cut-off events. For 1119420/1243101 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55201 event pairs, 0 based on Foata normal form. 122/3712 useless extension candidates. Maximal degree in co-relation 69891. Up to 747 conditions per place. [2021-08-13 17:58:39,954 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 761 selfloop transitions, 237 changer transitions 171/1189 dead transitions. [2021-08-13 17:58:39,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 1189 transitions, 163758 flow [2021-08-13 17:58:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:39,955 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:39,955 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:39,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:39,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:39,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:39,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:39,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:39,956 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:39,956 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 491 predicate places. [2021-08-13 17:58:39,956 INFO L482 AbstractCegarLoop]: Abstraction has has 535 places, 1189 transitions, 163758 flow [2021-08-13 17:58:39,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:39,957 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:39,957 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] [2021-08-13 17:58:39,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-13 17:58:39,957 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1220282421, now seen corresponding path program 70 times [2021-08-13 17:58:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:39,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720110955] [2021-08-13 17:58:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:39,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:39,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:39,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:39,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:39,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:39,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:39,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:39,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:39,987 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:39,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:39,999 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:40,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:40,121 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-08-13 17:58:40,122 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:40,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:40,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:40,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720110955] [2021-08-13 17:58:40,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720110955] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:40,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:40,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:40,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798748937] [2021-08-13 17:58:40,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:40,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:40,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:40,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:40,143 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:40,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1189 transitions, 163758 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:40,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:40,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:40,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:42,368 INFO L129 PetriNetUnfolder]: 244/3706 cut-off events. [2021-08-13 17:58:42,369 INFO L130 PetriNetUnfolder]: For 1054267/1156569 co-relation queries the response was YES. [2021-08-13 17:58:42,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88380 conditions, 3706 events. 244/3706 cut-off events. For 1054267/1156569 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55199 event pairs, 0 based on Foata normal form. 107/3697 useless extension candidates. Maximal degree in co-relation 70825. Up to 746 conditions per place. [2021-08-13 17:58:42,439 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 767 selfloop transitions, 227 changer transitions 174/1188 dead transitions. [2021-08-13 17:58:42,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1188 transitions, 165954 flow [2021-08-13 17:58:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:42,441 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:42,441 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:42,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:42,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:42,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:42,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:42,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:42,442 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:42,442 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 498 predicate places. [2021-08-13 17:58:42,442 INFO L482 AbstractCegarLoop]: Abstraction has has 542 places, 1188 transitions, 165954 flow [2021-08-13 17:58:42,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:42,442 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:42,442 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] [2021-08-13 17:58:42,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-13 17:58:42,442 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash 154264053, now seen corresponding path program 71 times [2021-08-13 17:58:42,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:42,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052818468] [2021-08-13 17:58:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:42,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:42,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:42,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:42,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:42,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:42,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:42,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:42,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:42,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:58:42,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:58:42,492 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:58:42,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:58:42,511 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:42,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:42,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:42,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052818468] [2021-08-13 17:58:42,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052818468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:42,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:42,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:42,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944899218] [2021-08-13 17:58:42,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:42,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:42,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:42,533 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:42,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1188 transitions, 165954 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:42,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:42,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:42,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:44,983 INFO L129 PetriNetUnfolder]: 244/3709 cut-off events. [2021-08-13 17:58:44,983 INFO L130 PetriNetUnfolder]: For 1084942/1189676 co-relation queries the response was YES. [2021-08-13 17:58:45,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89488 conditions, 3709 events. 244/3709 cut-off events. For 1084942/1189676 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55273 event pairs, 0 based on Foata normal form. 107/3698 useless extension candidates. Maximal degree in co-relation 71771. Up to 745 conditions per place. [2021-08-13 17:58:45,041 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 760 selfloop transitions, 229 changer transitions 178/1187 dead transitions. [2021-08-13 17:58:45,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1187 transitions, 168146 flow [2021-08-13 17:58:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:45,042 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:45,042 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:45,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:45,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:45,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:45,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:45,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:45,043 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:45,043 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 505 predicate places. [2021-08-13 17:58:45,043 INFO L482 AbstractCegarLoop]: Abstraction has has 549 places, 1187 transitions, 168146 flow [2021-08-13 17:58:45,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:45,043 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:45,043 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] [2021-08-13 17:58:45,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-13 17:58:45,043 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:45,044 INFO L82 PathProgramCache]: Analyzing trace with hash -909918889, now seen corresponding path program 72 times [2021-08-13 17:58:45,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:45,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516119874] [2021-08-13 17:58:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:45,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:45,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:45,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:45,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:45,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:45,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:45,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:45,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:45,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:45,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:45,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:45,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:45,098 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:45,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:45,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:45,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516119874] [2021-08-13 17:58:45,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516119874] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:45,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:45,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:45,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911544673] [2021-08-13 17:58:45,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:45,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:45,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:45,116 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:45,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 1187 transitions, 168146 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:45,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:45,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:45,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:47,799 INFO L129 PetriNetUnfolder]: 245/3925 cut-off events. [2021-08-13 17:58:47,799 INFO L130 PetriNetUnfolder]: For 1711512/1975166 co-relation queries the response was YES. [2021-08-13 17:58:47,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95091 conditions, 3925 events. 245/3925 cut-off events. For 1711512/1975166 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59285 event pairs, 0 based on Foata normal form. 223/4029 useless extension candidates. Maximal degree in co-relation 75618. Up to 780 conditions per place. [2021-08-13 17:58:47,859 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 800 selfloop transitions, 245 changer transitions 178/1243 dead transitions. [2021-08-13 17:58:47,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 1243 transitions, 178656 flow [2021-08-13 17:58:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:47,860 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:47,860 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:47,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:47,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:47,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:47,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:47,862 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:47,862 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 512 predicate places. [2021-08-13 17:58:47,862 INFO L482 AbstractCegarLoop]: Abstraction has has 556 places, 1243 transitions, 178656 flow [2021-08-13 17:58:47,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:47,862 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:47,862 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] [2021-08-13 17:58:47,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-13 17:58:47,862 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1105884209, now seen corresponding path program 73 times [2021-08-13 17:58:47,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:47,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113427810] [2021-08-13 17:58:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:47,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:47,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:47,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:47,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:47,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:47,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:47,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:47,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:47,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:47,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:47,899 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:47,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:47,916 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:47,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:47,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:47,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113427810] [2021-08-13 17:58:47,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113427810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:47,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:47,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:47,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831045308] [2021-08-13 17:58:47,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:47,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:47,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:47,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:47,934 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:47,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 1243 transitions, 178656 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:47,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:47,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:47,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:51,418 INFO L129 PetriNetUnfolder]: 245/3928 cut-off events. [2021-08-13 17:58:51,418 INFO L130 PetriNetUnfolder]: For 1200411/1309997 co-relation queries the response was YES. [2021-08-13 17:58:51,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96251 conditions, 3928 events. 245/3928 cut-off events. For 1200411/1309997 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59434 event pairs, 0 based on Foata normal form. 105/3913 useless extension candidates. Maximal degree in co-relation 76599. Up to 779 conditions per place. [2021-08-13 17:58:51,485 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 804 selfloop transitions, 238 changer transitions 180/1242 dead transitions. [2021-08-13 17:58:51,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 1242 transitions, 180954 flow [2021-08-13 17:58:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:51,486 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:51,486 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:51,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:51,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:51,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:51,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:51,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:51,488 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:51,488 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 519 predicate places. [2021-08-13 17:58:51,488 INFO L482 AbstractCegarLoop]: Abstraction has has 563 places, 1242 transitions, 180954 flow [2021-08-13 17:58:51,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:51,488 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:51,488 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] [2021-08-13 17:58:51,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-13 17:58:51,488 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:51,488 INFO L82 PathProgramCache]: Analyzing trace with hash -535699647, now seen corresponding path program 74 times [2021-08-13 17:58:51,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:51,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612001564] [2021-08-13 17:58:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:51,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:51,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:51,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:51,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:51,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:51,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:51,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:51,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:51,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:51,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:51,551 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:51,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:51,569 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:51,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:51,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:51,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612001564] [2021-08-13 17:58:51,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612001564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:51,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:51,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:51,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711004064] [2021-08-13 17:58:51,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:51,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:51,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:51,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:51,585 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:51,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 1242 transitions, 180954 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:51,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:51,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:51,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:54,433 INFO L129 PetriNetUnfolder]: 245/3927 cut-off events. [2021-08-13 17:58:54,435 INFO L130 PetriNetUnfolder]: For 1233839/1345857 co-relation queries the response was YES. [2021-08-13 17:58:54,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97399 conditions, 3927 events. 245/3927 cut-off events. For 1233839/1345857 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59343 event pairs, 0 based on Foata normal form. 105/3912 useless extension candidates. Maximal degree in co-relation 77570. Up to 778 conditions per place. [2021-08-13 17:58:54,497 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 797 selfloop transitions, 239 changer transitions 185/1241 dead transitions. [2021-08-13 17:58:54,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1241 transitions, 183248 flow [2021-08-13 17:58:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:54,498 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:54,498 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:54,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:54,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:54,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:54,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:54,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:54,499 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:54,499 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 526 predicate places. [2021-08-13 17:58:54,499 INFO L482 AbstractCegarLoop]: Abstraction has has 570 places, 1241 transitions, 183248 flow [2021-08-13 17:58:54,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:54,500 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:54,500 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] [2021-08-13 17:58:54,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-13 17:58:54,500 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1358796725, now seen corresponding path program 75 times [2021-08-13 17:58:54,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:54,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872682464] [2021-08-13 17:58:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:54,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:54,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:54,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:54,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:54,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:54,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:54,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:54,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:54,774 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-08-13 17:58:54,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:58:54,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:54,808 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:54,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:54,843 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:54,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:54,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:54,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872682464] [2021-08-13 17:58:54,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872682464] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:54,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:54,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:54,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995959788] [2021-08-13 17:58:54,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:54,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:54,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:54,862 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:54,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1241 transitions, 183248 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:54,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:54,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:54,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:58,043 INFO L129 PetriNetUnfolder]: 245/3924 cut-off events. [2021-08-13 17:58:58,043 INFO L130 PetriNetUnfolder]: For 1870969/2153421 co-relation queries the response was YES. [2021-08-13 17:58:58,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98541 conditions, 3924 events. 245/3924 cut-off events. For 1870969/2153421 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59343 event pairs, 0 based on Foata normal form. 223/4026 useless extension candidates. Maximal degree in co-relation 78537. Up to 777 conditions per place. [2021-08-13 17:58:58,104 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 793 selfloop transitions, 240 changer transitions 187/1240 dead transitions. [2021-08-13 17:58:58,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1240 transitions, 185538 flow [2021-08-13 17:58:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:58:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:58:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:58:58,105 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:58:58,105 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:58:58,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:58:58,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:58,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:58:58,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:58,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:58,106 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:58,106 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 533 predicate places. [2021-08-13 17:58:58,106 INFO L482 AbstractCegarLoop]: Abstraction has has 577 places, 1240 transitions, 185538 flow [2021-08-13 17:58:58,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:58,106 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:58,106 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] [2021-08-13 17:58:58,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-13 17:58:58,106 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash -510631087, now seen corresponding path program 76 times [2021-08-13 17:58:58,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:58,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123717157] [2021-08-13 17:58:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:58,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:58,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:58,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:58,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:58,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:58,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:58,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:58,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 17:58:58,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:58,185 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:58:58,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:58:58,203 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:58:58,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:58:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:58,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:58,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123717157] [2021-08-13 17:58:58,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123717157] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:58,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:58,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:58:58,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481054161] [2021-08-13 17:58:58,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:58:58,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:58:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:58:58,223 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:58:58,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1240 transitions, 185538 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:58:58,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:58,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:58:58,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:01,233 INFO L129 PetriNetUnfolder]: 245/3923 cut-off events. [2021-08-13 17:59:01,233 INFO L130 PetriNetUnfolder]: For 1304882/1421776 co-relation queries the response was YES. [2021-08-13 17:59:01,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99683 conditions, 3923 events. 245/3923 cut-off events. For 1304882/1421776 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59367 event pairs, 0 based on Foata normal form. 107/3912 useless extension candidates. Maximal degree in co-relation 79506. Up to 776 conditions per place. [2021-08-13 17:59:01,295 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 793 selfloop transitions, 236 changer transitions 190/1239 dead transitions. [2021-08-13 17:59:01,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 1239 transitions, 187824 flow [2021-08-13 17:59:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:01,296 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:01,296 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:01,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:01,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:01,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:01,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:01,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:01,297 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:01,297 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 540 predicate places. [2021-08-13 17:59:01,297 INFO L482 AbstractCegarLoop]: Abstraction has has 584 places, 1239 transitions, 187824 flow [2021-08-13 17:59:01,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:01,297 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:01,297 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] [2021-08-13 17:59:01,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-13 17:59:01,298 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1105644287, now seen corresponding path program 77 times [2021-08-13 17:59:01,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:01,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890253646] [2021-08-13 17:59:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:01,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:01,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:01,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:01,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:01,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:01,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:01,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:01,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:59:01,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:01,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:01,357 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:01,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:01,374 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:01,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:01,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:01,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890253646] [2021-08-13 17:59:01,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890253646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:01,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:01,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:01,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419555601] [2021-08-13 17:59:01,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:01,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:01,392 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:01,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 1239 transitions, 187824 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:01,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:01,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:01,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:04,291 INFO L129 PetriNetUnfolder]: 245/3921 cut-off events. [2021-08-13 17:59:04,292 INFO L130 PetriNetUnfolder]: For 1339720/1459046 co-relation queries the response was YES. [2021-08-13 17:59:04,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100823 conditions, 3921 events. 245/3921 cut-off events. For 1339720/1459046 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59250 event pairs, 0 based on Foata normal form. 107/3910 useless extension candidates. Maximal degree in co-relation 80475. Up to 775 conditions per place. [2021-08-13 17:59:04,383 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 794 selfloop transitions, 229 changer transitions 195/1238 dead transitions. [2021-08-13 17:59:04,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 1238 transitions, 190106 flow [2021-08-13 17:59:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:04,384 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:04,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:04,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:04,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:04,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:04,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:04,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:04,385 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:04,385 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 547 predicate places. [2021-08-13 17:59:04,386 INFO L482 AbstractCegarLoop]: Abstraction has has 591 places, 1238 transitions, 190106 flow [2021-08-13 17:59:04,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:04,386 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:04,386 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] [2021-08-13 17:59:04,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-13 17:59:04,386 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1684125983, now seen corresponding path program 78 times [2021-08-13 17:59:04,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:04,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430932066] [2021-08-13 17:59:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:04,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:04,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:04,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:04,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:04,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:04,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:04,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:04,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:04,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:04,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:04,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:04,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:04,442 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:04,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:04,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:04,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430932066] [2021-08-13 17:59:04,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430932066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:04,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:04,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:04,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46056250] [2021-08-13 17:59:04,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:04,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:04,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:04,460 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:04,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1238 transitions, 190106 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:04,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:04,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:04,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:07,310 INFO L129 PetriNetUnfolder]: 245/4106 cut-off events. [2021-08-13 17:59:07,310 INFO L130 PetriNetUnfolder]: For 1560305/1712660 co-relation queries the response was YES. [2021-08-13 17:59:07,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106134 conditions, 4106 events. 245/4106 cut-off events. For 1560305/1712660 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62830 event pairs, 0 based on Foata normal form. 88/4071 useless extension candidates. Maximal degree in co-relation 84141. Up to 805 conditions per place. [2021-08-13 17:59:07,373 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 812 selfloop transitions, 257 changer transitions 197/1286 dead transitions. [2021-08-13 17:59:07,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1286 transitions, 200126 flow [2021-08-13 17:59:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:07,374 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:07,375 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:07,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:07,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:07,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:07,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:07,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:07,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:07,376 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 554 predicate places. [2021-08-13 17:59:07,376 INFO L482 AbstractCegarLoop]: Abstraction has has 598 places, 1286 transitions, 200126 flow [2021-08-13 17:59:07,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:07,376 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:07,376 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] [2021-08-13 17:59:07,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-13 17:59:07,376 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:07,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:07,376 INFO L82 PathProgramCache]: Analyzing trace with hash 211070585, now seen corresponding path program 79 times [2021-08-13 17:59:07,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:07,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432183610] [2021-08-13 17:59:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:07,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:07,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:07,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:07,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:07,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:07,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:07,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:07,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:07,401 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:07,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:07,413 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:07,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:07,428 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:07,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:07,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:07,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432183610] [2021-08-13 17:59:07,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432183610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:07,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:07,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:07,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333153041] [2021-08-13 17:59:07,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:07,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:07,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:07,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:07,445 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:07,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1286 transitions, 200126 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:07,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:07,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:07,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:10,538 INFO L129 PetriNetUnfolder]: 245/4105 cut-off events. [2021-08-13 17:59:10,538 INFO L130 PetriNetUnfolder]: For 1739213/1931681 co-relation queries the response was YES. [2021-08-13 17:59:10,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107321 conditions, 4105 events. 245/4105 cut-off events. For 1739213/1931681 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62787 event pairs, 0 based on Foata normal form. 92/4074 useless extension candidates. Maximal degree in co-relation 85143. Up to 804 conditions per place. [2021-08-13 17:59:10,600 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 810 selfloop transitions, 255 changer transitions 200/1285 dead transitions. [2021-08-13 17:59:10,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1285 transitions, 202498 flow [2021-08-13 17:59:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:10,601 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:10,601 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:10,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:10,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:10,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:10,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:10,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:10,604 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:10,604 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 561 predicate places. [2021-08-13 17:59:10,604 INFO L482 AbstractCegarLoop]: Abstraction has has 605 places, 1285 transitions, 202498 flow [2021-08-13 17:59:10,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:10,604 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:10,604 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] [2021-08-13 17:59:10,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-13 17:59:10,605 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1833330625, now seen corresponding path program 80 times [2021-08-13 17:59:10,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:10,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106170380] [2021-08-13 17:59:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:10,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:10,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:10,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:10,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:10,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:10,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:10,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:10,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:10,653 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:10,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:10,669 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:10,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:10,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:10,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106170380] [2021-08-13 17:59:10,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106170380] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:10,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:10,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:10,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221876551] [2021-08-13 17:59:10,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:10,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:10,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:10,685 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:10,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 1285 transitions, 202498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:10,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:10,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:10,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:13,862 INFO L129 PetriNetUnfolder]: 245/4104 cut-off events. [2021-08-13 17:59:13,862 INFO L130 PetriNetUnfolder]: For 1907356/2135464 co-relation queries the response was YES. [2021-08-13 17:59:13,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108506 conditions, 4104 events. 245/4104 cut-off events. For 1907356/2135464 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62756 event pairs, 0 based on Foata normal form. 105/4086 useless extension candidates. Maximal degree in co-relation 86145. Up to 803 conditions per place. [2021-08-13 17:59:13,931 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 799 selfloop transitions, 263 changer transitions 202/1284 dead transitions. [2021-08-13 17:59:13,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1284 transitions, 204866 flow [2021-08-13 17:59:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:13,932 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:13,932 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:13,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:13,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:13,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:13,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:13,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:13,933 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:13,933 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 568 predicate places. [2021-08-13 17:59:13,934 INFO L482 AbstractCegarLoop]: Abstraction has has 612 places, 1284 transitions, 204866 flow [2021-08-13 17:59:13,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:13,934 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:13,934 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] [2021-08-13 17:59:13,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-13 17:59:13,934 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1464184719, now seen corresponding path program 81 times [2021-08-13 17:59:13,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:13,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960501887] [2021-08-13 17:59:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:13,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:13,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:13,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:13,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:13,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:13,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:13,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:13,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:13,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:13,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:13,979 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:13,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:13,997 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:13,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:14,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:14,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960501887] [2021-08-13 17:59:14,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960501887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:14,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:14,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:14,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124160728] [2021-08-13 17:59:14,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:14,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:14,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:14,016 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:14,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1284 transitions, 204866 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:14,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:14,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:14,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:17,159 INFO L129 PetriNetUnfolder]: 245/4103 cut-off events. [2021-08-13 17:59:17,159 INFO L130 PetriNetUnfolder]: For 1542341/1674259 co-relation queries the response was YES. [2021-08-13 17:59:17,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109689 conditions, 4103 events. 245/4103 cut-off events. For 1542341/1674259 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62789 event pairs, 0 based on Foata normal form. 75/4055 useless extension candidates. Maximal degree in co-relation 87147. Up to 802 conditions per place. [2021-08-13 17:59:17,230 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 805 selfloop transitions, 256 changer transitions 202/1283 dead transitions. [2021-08-13 17:59:17,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1283 transitions, 207230 flow [2021-08-13 17:59:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:17,231 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:17,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:17,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:17,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:17,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:17,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:17,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:17,232 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:17,232 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 575 predicate places. [2021-08-13 17:59:17,232 INFO L482 AbstractCegarLoop]: Abstraction has has 619 places, 1283 transitions, 207230 flow [2021-08-13 17:59:17,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:17,233 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:17,233 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] [2021-08-13 17:59:17,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-13 17:59:17,233 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:17,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2110886207, now seen corresponding path program 82 times [2021-08-13 17:59:17,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:17,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786572472] [2021-08-13 17:59:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:17,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:17,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:17,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:17,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:17,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:17,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:17,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:17,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:17,265 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:17,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:17,280 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:17,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:17,479 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-08-13 17:59:17,480 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:17,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:17,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:17,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786572472] [2021-08-13 17:59:17,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786572472] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:17,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:17,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:17,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779009155] [2021-08-13 17:59:17,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:17,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:17,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:17,500 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:17,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 1283 transitions, 207230 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:17,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:17,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:17,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:20,644 INFO L129 PetriNetUnfolder]: 245/4102 cut-off events. [2021-08-13 17:59:20,645 INFO L130 PetriNetUnfolder]: For 2028668/2268033 co-relation queries the response was YES. [2021-08-13 17:59:20,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110870 conditions, 4102 events. 245/4102 cut-off events. For 2028668/2268033 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62747 event pairs, 0 based on Foata normal form. 107/4086 useless extension candidates. Maximal degree in co-relation 88149. Up to 801 conditions per place. [2021-08-13 17:59:20,712 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 805 selfloop transitions, 250 changer transitions 207/1282 dead transitions. [2021-08-13 17:59:20,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1282 transitions, 209590 flow [2021-08-13 17:59:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:20,713 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:20,713 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:20,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:20,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:20,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:20,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:20,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:20,714 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:20,714 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 582 predicate places. [2021-08-13 17:59:20,714 INFO L482 AbstractCegarLoop]: Abstraction has has 626 places, 1282 transitions, 209590 flow [2021-08-13 17:59:20,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:20,714 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:20,714 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] [2021-08-13 17:59:20,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-13 17:59:20,714 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1125458977, now seen corresponding path program 83 times [2021-08-13 17:59:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:20,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906298089] [2021-08-13 17:59:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:20,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:20,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:20,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:20,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:20,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:20,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:20,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:20,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:20,745 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:20,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:20,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:20,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:20,775 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:20,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:20,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:20,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906298089] [2021-08-13 17:59:20,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906298089] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:20,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:20,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:20,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333875307] [2021-08-13 17:59:20,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:20,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:20,794 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:20,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1282 transitions, 209590 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:20,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:20,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:20,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:24,030 INFO L129 PetriNetUnfolder]: 245/4103 cut-off events. [2021-08-13 17:59:24,030 INFO L130 PetriNetUnfolder]: For 1616839/1755209 co-relation queries the response was YES. [2021-08-13 17:59:24,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112053 conditions, 4103 events. 245/4103 cut-off events. For 1616839/1755209 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62687 event pairs, 0 based on Foata normal form. 73/4054 useless extension candidates. Maximal degree in co-relation 89155. Up to 800 conditions per place. [2021-08-13 17:59:24,096 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 792 selfloop transitions, 259 changer transitions 210/1281 dead transitions. [2021-08-13 17:59:24,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1281 transitions, 211946 flow [2021-08-13 17:59:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:24,097 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:24,097 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:24,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:24,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:24,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:24,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:24,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:24,098 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:24,098 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 589 predicate places. [2021-08-13 17:59:24,098 INFO L482 AbstractCegarLoop]: Abstraction has has 633 places, 1281 transitions, 211946 flow [2021-08-13 17:59:24,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:24,099 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:24,099 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] [2021-08-13 17:59:24,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-13 17:59:24,099 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash 988450507, now seen corresponding path program 84 times [2021-08-13 17:59:24,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:24,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926978126] [2021-08-13 17:59:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:24,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:24,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:24,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:24,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:24,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:24,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:24,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:24,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:24,123 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:24,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:24,134 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:24,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:24,151 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:24,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:24,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:24,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926978126] [2021-08-13 17:59:24,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926978126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:24,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:24,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:24,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363456616] [2021-08-13 17:59:24,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:24,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:24,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:24,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:24,169 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:24,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1281 transitions, 211946 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:24,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:24,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:24,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:27,497 INFO L129 PetriNetUnfolder]: 245/4100 cut-off events. [2021-08-13 17:59:27,498 INFO L130 PetriNetUnfolder]: For 1818545/1996336 co-relation queries the response was YES. [2021-08-13 17:59:27,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113226 conditions, 4100 events. 245/4100 cut-off events. For 1818545/1996336 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62640 event pairs, 0 based on Foata normal form. 88/4065 useless extension candidates. Maximal degree in co-relation 90153. Up to 799 conditions per place. [2021-08-13 17:59:27,568 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 798 selfloop transitions, 250 changer transitions 212/1280 dead transitions. [2021-08-13 17:59:27,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 1280 transitions, 214298 flow [2021-08-13 17:59:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:27,569 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:27,569 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:27,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:27,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:27,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:27,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:27,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:27,570 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:27,570 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 596 predicate places. [2021-08-13 17:59:27,570 INFO L482 AbstractCegarLoop]: Abstraction has has 640 places, 1280 transitions, 214298 flow [2021-08-13 17:59:27,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:27,570 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:27,570 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] [2021-08-13 17:59:27,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-13 17:59:27,570 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:27,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1696568995, now seen corresponding path program 85 times [2021-08-13 17:59:27,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:27,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879932587] [2021-08-13 17:59:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:27,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:27,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:27,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:27,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:27,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:27,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:27,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:27,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:27,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:27,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:27,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:27,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:27,622 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:27,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:27,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:27,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879932587] [2021-08-13 17:59:27,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879932587] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:27,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:27,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545200479] [2021-08-13 17:59:27,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:27,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:27,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:27,641 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:27,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 1280 transitions, 214298 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:27,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:27,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:27,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:30,762 INFO L129 PetriNetUnfolder]: 245/4099 cut-off events. [2021-08-13 17:59:30,762 INFO L130 PetriNetUnfolder]: For 1696561/1841395 co-relation queries the response was YES. [2021-08-13 17:59:30,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114401 conditions, 4099 events. 245/4099 cut-off events. For 1696561/1841395 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62693 event pairs, 0 based on Foata normal form. 73/4049 useless extension candidates. Maximal degree in co-relation 91155. Up to 798 conditions per place. [2021-08-13 17:59:30,830 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 797 selfloop transitions, 246 changer transitions 216/1279 dead transitions. [2021-08-13 17:59:30,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 1279 transitions, 216646 flow [2021-08-13 17:59:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:30,831 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:30,831 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:30,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:30,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:30,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:30,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,832 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,832 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 603 predicate places. [2021-08-13 17:59:30,832 INFO L482 AbstractCegarLoop]: Abstraction has has 647 places, 1279 transitions, 216646 flow [2021-08-13 17:59:30,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,832 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:30,832 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] [2021-08-13 17:59:30,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-13 17:59:30,832 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1505858515, now seen corresponding path program 86 times [2021-08-13 17:59:30,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:30,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121088380] [2021-08-13 17:59:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:30,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:30,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:30,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:30,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:30,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:30,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:30,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:30,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:30,864 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:59:30,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:59:30,887 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:59:30,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:59:30,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:30,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:30,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:30,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121088380] [2021-08-13 17:59:30,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121088380] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:30,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:30,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:30,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27577457] [2021-08-13 17:59:30,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:30,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:30,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:30,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:30,926 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:30,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1279 transitions, 216646 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:30,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:30,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:30,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:34,140 INFO L129 PetriNetUnfolder]: 245/4098 cut-off events. [2021-08-13 17:59:34,141 INFO L130 PetriNetUnfolder]: For 1909321/2095420 co-relation queries the response was YES. [2021-08-13 17:59:34,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115574 conditions, 4098 events. 245/4098 cut-off events. For 1909321/2095420 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62671 event pairs, 0 based on Foata normal form. 88/4063 useless extension candidates. Maximal degree in co-relation 92157. Up to 797 conditions per place. [2021-08-13 17:59:34,396 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 783 selfloop transitions, 259 changer transitions 216/1278 dead transitions. [2021-08-13 17:59:34,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 1278 transitions, 218990 flow [2021-08-13 17:59:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:34,397 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:34,397 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:34,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:34,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:34,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:34,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:34,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:34,399 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:34,399 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 610 predicate places. [2021-08-13 17:59:34,399 INFO L482 AbstractCegarLoop]: Abstraction has has 654 places, 1278 transitions, 218990 flow [2021-08-13 17:59:34,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:34,399 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:34,399 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] [2021-08-13 17:59:34,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-13 17:59:34,399 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash -311706487, now seen corresponding path program 87 times [2021-08-13 17:59:34,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:34,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510142215] [2021-08-13 17:59:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:34,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:34,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:34,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:34,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:34,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:34,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:34,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:34,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:34,430 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:59:34,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:59:34,453 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:34,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:34,471 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:34,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:34,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:34,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510142215] [2021-08-13 17:59:34,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510142215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:34,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:34,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:34,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216378869] [2021-08-13 17:59:34,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:34,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:34,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:34,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:34,491 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:34,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 1278 transitions, 218990 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:34,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:34,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:34,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:37,917 INFO L129 PetriNetUnfolder]: 245/4097 cut-off events. [2021-08-13 17:59:37,917 INFO L130 PetriNetUnfolder]: For 2294028/2558563 co-relation queries the response was YES. [2021-08-13 17:59:37,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116745 conditions, 4097 events. 245/4097 cut-off events. For 2294028/2558563 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62709 event pairs, 0 based on Foata normal form. 107/4081 useless extension candidates. Maximal degree in co-relation 93159. Up to 796 conditions per place. [2021-08-13 17:59:37,995 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 780 selfloop transitions, 256 changer transitions 221/1277 dead transitions. [2021-08-13 17:59:37,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1277 transitions, 221330 flow [2021-08-13 17:59:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:37,996 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:37,996 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:37,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:37,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:37,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:37,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:37,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:37,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:37,997 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 617 predicate places. [2021-08-13 17:59:37,997 INFO L482 AbstractCegarLoop]: Abstraction has has 661 places, 1277 transitions, 221330 flow [2021-08-13 17:59:37,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:37,997 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:37,997 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] [2021-08-13 17:59:37,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-13 17:59:37,997 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:37,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2063263389, now seen corresponding path program 88 times [2021-08-13 17:59:37,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:37,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459063176] [2021-08-13 17:59:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:38,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:38,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:38,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:38,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:38,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:38,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:38,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:38,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:38,028 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:59:38,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:59:38,050 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:38,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:38,068 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:38,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:38,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:38,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459063176] [2021-08-13 17:59:38,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459063176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:38,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:38,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:38,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221687759] [2021-08-13 17:59:38,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:38,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:38,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:38,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:38,087 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:38,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1277 transitions, 221330 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:38,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:38,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:38,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:41,915 INFO L129 PetriNetUnfolder]: 245/4097 cut-off events. [2021-08-13 17:59:41,916 INFO L130 PetriNetUnfolder]: For 2170380/2399868 co-relation queries the response was YES. [2021-08-13 17:59:41,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117916 conditions, 4097 events. 245/4097 cut-off events. For 2170380/2399868 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62620 event pairs, 0 based on Foata normal form. 94/4069 useless extension candidates. Maximal degree in co-relation 94163. Up to 795 conditions per place. [2021-08-13 17:59:41,995 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 778 selfloop transitions, 255 changer transitions 223/1276 dead transitions. [2021-08-13 17:59:41,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1276 transitions, 223666 flow [2021-08-13 17:59:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:41,996 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:41,996 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:41,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:41,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:41,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:41,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:41,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:41,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:41,997 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 624 predicate places. [2021-08-13 17:59:41,997 INFO L482 AbstractCegarLoop]: Abstraction has has 668 places, 1276 transitions, 223666 flow [2021-08-13 17:59:41,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:41,997 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:42,001 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] [2021-08-13 17:59:42,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-13 17:59:42,001 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash 938578967, now seen corresponding path program 89 times [2021-08-13 17:59:42,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:42,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299718749] [2021-08-13 17:59:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:42,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:42,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:42,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:42,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:42,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:42,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:42,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:59:42,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:59:42,065 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 17:59:42,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 17:59:42,088 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:59:42,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:59:42,109 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:42,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:42,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:42,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299718749] [2021-08-13 17:59:42,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299718749] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:42,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:42,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:42,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128796477] [2021-08-13 17:59:42,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:42,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:42,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:42,128 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:42,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 1276 transitions, 223666 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:42,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:42,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:42,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:45,964 INFO L129 PetriNetUnfolder]: 245/4095 cut-off events. [2021-08-13 17:59:45,964 INFO L130 PetriNetUnfolder]: For 1975371/2147969 co-relation queries the response was YES. [2021-08-13 17:59:46,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119081 conditions, 4095 events. 245/4095 cut-off events. For 1975371/2147969 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62611 event pairs, 0 based on Foata normal form. 76/4048 useless extension candidates. Maximal degree in co-relation 95163. Up to 794 conditions per place. [2021-08-13 17:59:46,035 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 776 selfloop transitions, 252 changer transitions 227/1275 dead transitions. [2021-08-13 17:59:46,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 1275 transitions, 225998 flow [2021-08-13 17:59:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:46,042 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:46,042 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:46,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:46,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:46,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:46,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:46,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:46,043 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:46,043 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 631 predicate places. [2021-08-13 17:59:46,043 INFO L482 AbstractCegarLoop]: Abstraction has has 675 places, 1275 transitions, 225998 flow [2021-08-13 17:59:46,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:46,043 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:46,043 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] [2021-08-13 17:59:46,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-13 17:59:46,044 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:46,044 INFO L82 PathProgramCache]: Analyzing trace with hash -520565829, now seen corresponding path program 90 times [2021-08-13 17:59:46,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:46,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528171352] [2021-08-13 17:59:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:46,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:46,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:46,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:46,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:46,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:46,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:46,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:46,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:46,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:46,092 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:46,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:46,111 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:46,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:46,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:46,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528171352] [2021-08-13 17:59:46,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528171352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:46,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:46,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:46,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542072174] [2021-08-13 17:59:46,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:46,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:46,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:46,136 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:46,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 1275 transitions, 225998 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:46,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:46,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:46,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:49,781 INFO L129 PetriNetUnfolder]: 245/4094 cut-off events. [2021-08-13 17:59:49,782 INFO L130 PetriNetUnfolder]: For 2020372/2196280 co-relation queries the response was YES. [2021-08-13 17:59:49,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120246 conditions, 4094 events. 245/4094 cut-off events. For 2020372/2196280 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62638 event pairs, 0 based on Foata normal form. 76/4047 useless extension candidates. Maximal degree in co-relation 96165. Up to 793 conditions per place. [2021-08-13 17:59:49,855 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 774 selfloop transitions, 253 changer transitions 227/1274 dead transitions. [2021-08-13 17:59:49,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 1274 transitions, 228326 flow [2021-08-13 17:59:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:49,856 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:49,857 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:49,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:49,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:49,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:49,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:49,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:49,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:49,858 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 638 predicate places. [2021-08-13 17:59:49,858 INFO L482 AbstractCegarLoop]: Abstraction has has 682 places, 1274 transitions, 228326 flow [2021-08-13 17:59:49,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:49,858 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:49,858 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] [2021-08-13 17:59:49,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-13 17:59:49,858 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1057808117, now seen corresponding path program 91 times [2021-08-13 17:59:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:49,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316746417] [2021-08-13 17:59:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:49,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:49,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:49,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:49,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:49,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:49,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:49,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:49,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:49,885 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:49,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:49,908 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:49,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:49,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:49,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:49,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:49,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316746417] [2021-08-13 17:59:49,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316746417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:49,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:49,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:49,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24808267] [2021-08-13 17:59:49,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:49,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:49,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:49,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:49,937 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:49,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 1274 transitions, 228326 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:49,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:49,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:49,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:53,996 INFO L129 PetriNetUnfolder]: 245/4094 cut-off events. [2021-08-13 17:59:53,996 INFO L130 PetriNetUnfolder]: For 1951517/2115755 co-relation queries the response was YES. [2021-08-13 17:59:54,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121411 conditions, 4094 events. 245/4094 cut-off events. For 1951517/2115755 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62514 event pairs, 0 based on Foata normal form. 75/4047 useless extension candidates. Maximal degree in co-relation 97169. Up to 792 conditions per place. [2021-08-13 17:59:54,068 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 773 selfloop transitions, 253 changer transitions 227/1273 dead transitions. [2021-08-13 17:59:54,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 1273 transitions, 230650 flow [2021-08-13 17:59:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:54,069 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:54,069 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:54,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:54,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:54,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:54,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:54,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:54,070 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:54,070 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 645 predicate places. [2021-08-13 17:59:54,070 INFO L482 AbstractCegarLoop]: Abstraction has has 689 places, 1273 transitions, 230650 flow [2021-08-13 17:59:54,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:54,070 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:54,070 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] [2021-08-13 17:59:54,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-13 17:59:54,071 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:54,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1790357819, now seen corresponding path program 92 times [2021-08-13 17:59:54,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:54,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135543612] [2021-08-13 17:59:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:54,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:54,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:54,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:54,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:54,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:54,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:54,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:54,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:54,095 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:54,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:54,106 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 17:59:54,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 17:59:54,121 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:54,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:54,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:54,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135543612] [2021-08-13 17:59:54,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135543612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:54,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:54,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:54,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683379820] [2021-08-13 17:59:54,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:54,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:54,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:54,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:54,136 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:54,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 1273 transitions, 230650 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:54,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:54,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:54,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:59:57,580 INFO L129 PetriNetUnfolder]: 245/4092 cut-off events. [2021-08-13 17:59:57,580 INFO L130 PetriNetUnfolder]: For 2195401/2406424 co-relation queries the response was YES. [2021-08-13 17:59:57,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122570 conditions, 4092 events. 245/4092 cut-off events. For 2195401/2406424 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62599 event pairs, 0 based on Foata normal form. 88/4057 useless extension candidates. Maximal degree in co-relation 98169. Up to 791 conditions per place. [2021-08-13 17:59:57,653 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 771 selfloop transitions, 254 changer transitions 227/1272 dead transitions. [2021-08-13 17:59:57,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 1272 transitions, 232970 flow [2021-08-13 17:59:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:59:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:59:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 17:59:57,654 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 17:59:57,654 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 17:59:57,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 17:59:57,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:59:57,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 17:59:57,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:57,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:57,655 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:57,655 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 652 predicate places. [2021-08-13 17:59:57,655 INFO L482 AbstractCegarLoop]: Abstraction has has 696 places, 1272 transitions, 232970 flow [2021-08-13 17:59:57,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:57,655 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:59:57,656 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] [2021-08-13 17:59:57,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-13 17:59:57,656 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:59:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:59:57,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1635735199, now seen corresponding path program 93 times [2021-08-13 17:59:57,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:59:57,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902013793] [2021-08-13 17:59:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:59:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:59:57,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:57,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:59:57,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:57,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:59:57,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:59:57,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:59:57,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:59:57,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:59:57,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:59:57,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:59:57,692 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 17:59:57,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 17:59:57,708 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 17:59:57,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 17:59:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:59:57,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:59:57,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902013793] [2021-08-13 17:59:57,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902013793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:59:57,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:59:57,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 17:59:57,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738346207] [2021-08-13 17:59:57,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 17:59:57,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:59:57,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 17:59:57,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 17:59:57,723 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 17:59:57,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1272 transitions, 232970 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:59:57,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:59:57,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 17:59:57,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:01,531 INFO L129 PetriNetUnfolder]: 245/4091 cut-off events. [2021-08-13 18:00:01,531 INFO L130 PetriNetUnfolder]: For 2634669/2929408 co-relation queries the response was YES. [2021-08-13 18:00:01,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123729 conditions, 4091 events. 245/4091 cut-off events. For 2634669/2929408 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62616 event pairs, 0 based on Foata normal form. 107/4075 useless extension candidates. Maximal degree in co-relation 99171. Up to 790 conditions per place. [2021-08-13 18:00:01,607 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 772 selfloop transitions, 252 changer transitions 227/1271 dead transitions. [2021-08-13 18:00:01,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 703 places, 1271 transitions, 235286 flow [2021-08-13 18:00:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:01,608 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:01,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:01,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:01,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:01,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:01,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:01,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:01,609 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:01,609 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 659 predicate places. [2021-08-13 18:00:01,609 INFO L482 AbstractCegarLoop]: Abstraction has has 703 places, 1271 transitions, 235286 flow [2021-08-13 18:00:01,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:01,610 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:01,610 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] [2021-08-13 18:00:01,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-13 18:00:01,610 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 684472733, now seen corresponding path program 94 times [2021-08-13 18:00:01,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:01,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079252024] [2021-08-13 18:00:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:01,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:01,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:01,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:01,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:01,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:01,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:01,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:01,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:01,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:01,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:01,669 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:01,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:01,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:01,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079252024] [2021-08-13 18:00:01,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079252024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:01,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:01,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:01,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465790722] [2021-08-13 18:00:01,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:01,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:01,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:01,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:01,685 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:01,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 1271 transitions, 235286 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:01,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:01,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:01,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:05,892 INFO L129 PetriNetUnfolder]: 245/4090 cut-off events. [2021-08-13 18:00:05,892 INFO L130 PetriNetUnfolder]: For 2477768/2731916 co-relation queries the response was YES. [2021-08-13 18:00:05,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124886 conditions, 4090 events. 245/4090 cut-off events. For 2477768/2731916 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62408 event pairs, 0 based on Foata normal form. 92/4059 useless extension candidates. Maximal degree in co-relation 100173. Up to 789 conditions per place. [2021-08-13 18:00:05,991 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 766 selfloop transitions, 257 changer transitions 227/1270 dead transitions. [2021-08-13 18:00:05,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 1270 transitions, 237598 flow [2021-08-13 18:00:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:05,992 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:05,992 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:05,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:05,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:05,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:05,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:05,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:05,993 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:05,993 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 666 predicate places. [2021-08-13 18:00:05,993 INFO L482 AbstractCegarLoop]: Abstraction has has 710 places, 1270 transitions, 237598 flow [2021-08-13 18:00:05,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:05,994 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:05,994 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] [2021-08-13 18:00:05,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-13 18:00:05,994 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:05,994 INFO L82 PathProgramCache]: Analyzing trace with hash 762445537, now seen corresponding path program 95 times [2021-08-13 18:00:05,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:05,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824235293] [2021-08-13 18:00:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:06,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:06,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:06,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:06,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:06,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:06,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:06,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:06,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:06,048 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:06,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:06,078 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 18:00:06,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 18:00:06,102 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:06,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:06,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:06,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824235293] [2021-08-13 18:00:06,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824235293] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:06,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:06,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:06,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074012587] [2021-08-13 18:00:06,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:06,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:06,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:06,124 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:06,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 1270 transitions, 237598 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:06,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:06,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:06,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:10,500 INFO L129 PetriNetUnfolder]: 245/4089 cut-off events. [2021-08-13 18:00:10,501 INFO L130 PetriNetUnfolder]: For 2753496/3058303 co-relation queries the response was YES. [2021-08-13 18:00:10,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126041 conditions, 4089 events. 245/4089 cut-off events. For 2753496/3058303 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62527 event pairs, 0 based on Foata normal form. 107/4073 useless extension candidates. Maximal degree in co-relation 101175. Up to 788 conditions per place. [2021-08-13 18:00:10,594 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 759 selfloop transitions, 247 changer transitions 243/1269 dead transitions. [2021-08-13 18:00:10,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 1269 transitions, 239906 flow [2021-08-13 18:00:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:10,596 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:10,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:10,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:10,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:10,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:10,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:10,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:10,597 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:10,597 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 673 predicate places. [2021-08-13 18:00:10,597 INFO L482 AbstractCegarLoop]: Abstraction has has 717 places, 1269 transitions, 239906 flow [2021-08-13 18:00:10,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:10,597 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:10,597 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] [2021-08-13 18:00:10,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-13 18:00:10,598 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2009123215, now seen corresponding path program 96 times [2021-08-13 18:00:10,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:10,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375483152] [2021-08-13 18:00:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:10,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:10,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:10,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:10,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:10,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:10,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:10,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:10,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:10,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:00:10,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:00:10,639 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:10,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:10,657 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:10,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:10,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:10,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375483152] [2021-08-13 18:00:10,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375483152] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:10,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:10,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:10,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668042902] [2021-08-13 18:00:10,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:10,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:10,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:10,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:10,692 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:10,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 1269 transitions, 239906 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:10,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:10,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:10,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:14,805 INFO L129 PetriNetUnfolder]: 245/4090 cut-off events. [2021-08-13 18:00:14,805 INFO L130 PetriNetUnfolder]: For 2169508/2349894 co-relation queries the response was YES. [2021-08-13 18:00:14,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127198 conditions, 4090 events. 245/4090 cut-off events. For 2169508/2349894 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62485 event pairs, 0 based on Foata normal form. 73/4041 useless extension candidates. Maximal degree in co-relation 102181. Up to 787 conditions per place. [2021-08-13 18:00:14,879 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 756 selfloop transitions, 247 changer transitions 245/1268 dead transitions. [2021-08-13 18:00:14,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 1268 transitions, 242210 flow [2021-08-13 18:00:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:14,893 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:14,893 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:14,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:14,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:14,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:14,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:14,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:14,900 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:14,900 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 680 predicate places. [2021-08-13 18:00:14,900 INFO L482 AbstractCegarLoop]: Abstraction has has 724 places, 1268 transitions, 242210 flow [2021-08-13 18:00:14,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:14,900 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:14,900 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] [2021-08-13 18:00:14,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-13 18:00:14,900 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash -94696627, now seen corresponding path program 97 times [2021-08-13 18:00:14,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:14,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021073416] [2021-08-13 18:00:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:14,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:14,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:14,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:14,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:14,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:14,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:14,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:14,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:14,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:00:14,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:00:14,973 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:14,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:14,996 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:14,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:15,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:15,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021073416] [2021-08-13 18:00:15,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021073416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:15,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:15,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:15,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271489543] [2021-08-13 18:00:15,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:15,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:15,023 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:15,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 1268 transitions, 242210 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:15,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:15,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:15,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:19,286 INFO L129 PetriNetUnfolder]: 245/4087 cut-off events. [2021-08-13 18:00:19,287 INFO L130 PetriNetUnfolder]: For 2449201/2680994 co-relation queries the response was YES. [2021-08-13 18:00:19,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128345 conditions, 4087 events. 245/4087 cut-off events. For 2449201/2680994 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62513 event pairs, 0 based on Foata normal form. 88/4052 useless extension candidates. Maximal degree in co-relation 103179. Up to 786 conditions per place. [2021-08-13 18:00:19,362 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 754 selfloop transitions, 245 changer transitions 248/1267 dead transitions. [2021-08-13 18:00:19,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1267 transitions, 244510 flow [2021-08-13 18:00:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:19,373 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:19,373 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:19,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:19,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:19,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:19,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:19,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:19,374 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:19,375 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 687 predicate places. [2021-08-13 18:00:19,375 INFO L482 AbstractCegarLoop]: Abstraction has has 731 places, 1267 transitions, 244510 flow [2021-08-13 18:00:19,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:19,375 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:19,375 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:00:19,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-13 18:00:19,375 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:19,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:19,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1414260673, now seen corresponding path program 98 times [2021-08-13 18:00:19,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:19,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686373374] [2021-08-13 18:00:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:19,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:19,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:19,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:19,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:19,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:19,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:19,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:19,406 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:19,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:19,427 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 18:00:19,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 18:00:19,445 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:19,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:19,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686373374] [2021-08-13 18:00:19,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686373374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:19,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:19,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:19,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114627953] [2021-08-13 18:00:19,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:19,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:19,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:19,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:19,465 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:19,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 1267 transitions, 244510 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:19,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:19,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:19,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:23,928 INFO L129 PetriNetUnfolder]: 245/4086 cut-off events. [2021-08-13 18:00:23,929 INFO L130 PetriNetUnfolder]: For 2701319/2971927 co-relation queries the response was YES. [2021-08-13 18:00:23,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129494 conditions, 4086 events. 245/4086 cut-off events. For 2701319/2971927 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62411 event pairs, 0 based on Foata normal form. 94/4057 useless extension candidates. Maximal degree in co-relation 104181. Up to 785 conditions per place. [2021-08-13 18:00:24,009 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 748 selfloop transitions, 248 changer transitions 250/1266 dead transitions. [2021-08-13 18:00:24,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 1266 transitions, 246806 flow [2021-08-13 18:00:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:24,010 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:24,010 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:24,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:24,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:24,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:24,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,011 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,011 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 694 predicate places. [2021-08-13 18:00:24,011 INFO L482 AbstractCegarLoop]: Abstraction has has 738 places, 1266 transitions, 246806 flow [2021-08-13 18:00:24,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,011 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:24,012 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] [2021-08-13 18:00:24,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-13 18:00:24,012 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:24,012 INFO L82 PathProgramCache]: Analyzing trace with hash -660149955, now seen corresponding path program 99 times [2021-08-13 18:00:24,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:24,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469882393] [2021-08-13 18:00:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:24,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:24,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:24,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:24,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:24,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:24,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:24,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:24,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:24,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 18:00:24,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 18:00:24,214 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-08-13 18:00:24,215 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:24,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:24,243 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:24,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:24,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:24,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469882393] [2021-08-13 18:00:24,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469882393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:24,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:24,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:24,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287131439] [2021-08-13 18:00:24,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:24,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:24,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:24,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:24,262 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:24,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 1266 transitions, 246806 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:24,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:24,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:24,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:28,577 INFO L129 PetriNetUnfolder]: 245/4085 cut-off events. [2021-08-13 18:00:28,577 INFO L130 PetriNetUnfolder]: For 2522534/2761104 co-relation queries the response was YES. [2021-08-13 18:00:28,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130641 conditions, 4085 events. 245/4085 cut-off events. For 2522534/2761104 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62390 event pairs, 0 based on Foata normal form. 86/4048 useless extension candidates. Maximal degree in co-relation 105183. Up to 784 conditions per place. [2021-08-13 18:00:28,667 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 746 selfloop transitions, 246 changer transitions 253/1265 dead transitions. [2021-08-13 18:00:28,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 1265 transitions, 249098 flow [2021-08-13 18:00:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:28,668 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:28,668 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:28,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:28,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:28,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:28,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:28,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:28,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:28,669 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 701 predicate places. [2021-08-13 18:00:28,669 INFO L482 AbstractCegarLoop]: Abstraction has has 745 places, 1265 transitions, 249098 flow [2021-08-13 18:00:28,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:28,670 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:28,670 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] [2021-08-13 18:00:28,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-13 18:00:28,670 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 631074171, now seen corresponding path program 100 times [2021-08-13 18:00:28,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:28,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607657914] [2021-08-13 18:00:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:28,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:28,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:28,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:28,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:28,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:28,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:28,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:28,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:28,736 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:00:28,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:00:28,763 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:28,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:28,780 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:28,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:28,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:28,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607657914] [2021-08-13 18:00:28,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607657914] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:28,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:28,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386333589] [2021-08-13 18:00:28,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:28,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:28,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:28,798 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:28,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 1265 transitions, 249098 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:28,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:28,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:28,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:33,290 INFO L129 PetriNetUnfolder]: 245/4084 cut-off events. [2021-08-13 18:00:33,290 INFO L130 PetriNetUnfolder]: For 2360386/2553712 co-relation queries the response was YES. [2021-08-13 18:00:33,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131786 conditions, 4084 events. 245/4084 cut-off events. For 2360386/2553712 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62326 event pairs, 0 based on Foata normal form. 75/4036 useless extension candidates. Maximal degree in co-relation 106185. Up to 783 conditions per place. [2021-08-13 18:00:33,375 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 744 selfloop transitions, 247 changer transitions 253/1264 dead transitions. [2021-08-13 18:00:33,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1264 transitions, 251386 flow [2021-08-13 18:00:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:33,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:33,376 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:33,376 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:33,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:33,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:33,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:33,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,392 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,392 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 708 predicate places. [2021-08-13 18:00:33,392 INFO L482 AbstractCegarLoop]: Abstraction has has 752 places, 1264 transitions, 251386 flow [2021-08-13 18:00:33,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,392 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:33,392 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] [2021-08-13 18:00:33,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-13 18:00:33,392 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:33,392 INFO L82 PathProgramCache]: Analyzing trace with hash -753197339, now seen corresponding path program 101 times [2021-08-13 18:00:33,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:33,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063234710] [2021-08-13 18:00:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:33,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:33,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:33,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:33,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:33,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:33,431 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:00:33,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:00:33,443 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 18:00:33,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 18:00:33,463 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:33,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:33,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:33,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063234710] [2021-08-13 18:00:33,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063234710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:33,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:33,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:33,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805405338] [2021-08-13 18:00:33,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:33,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:33,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:33,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:33,483 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:33,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 1264 transitions, 251386 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:33,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:33,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:33,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:38,788 INFO L129 PetriNetUnfolder]: 245/4083 cut-off events. [2021-08-13 18:00:38,788 INFO L130 PetriNetUnfolder]: For 2662051/2910460 co-relation queries the response was YES. [2021-08-13 18:00:38,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132929 conditions, 4083 events. 245/4083 cut-off events. For 2662051/2910460 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62483 event pairs, 0 based on Foata normal form. 88/4048 useless extension candidates. Maximal degree in co-relation 107187. Up to 782 conditions per place. [2021-08-13 18:00:38,870 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 741 selfloop transitions, 242 changer transitions 260/1263 dead transitions. [2021-08-13 18:00:38,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 1263 transitions, 253670 flow [2021-08-13 18:00:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:38,871 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:38,871 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:38,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:38,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:38,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:38,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:38,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:38,872 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:38,872 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 715 predicate places. [2021-08-13 18:00:38,872 INFO L482 AbstractCegarLoop]: Abstraction has has 759 places, 1263 transitions, 253670 flow [2021-08-13 18:00:38,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:38,872 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:38,872 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] [2021-08-13 18:00:38,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-13 18:00:38,872 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:38,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1528265887, now seen corresponding path program 102 times [2021-08-13 18:00:38,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:38,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809532996] [2021-08-13 18:00:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:38,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:38,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:38,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:38,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:38,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:38,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:38,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:38,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:00:38,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:00:38,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:00:38,913 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:38,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:38,932 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:38,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:38,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:38,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809532996] [2021-08-13 18:00:38,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809532996] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:38,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:38,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:38,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067034848] [2021-08-13 18:00:38,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:38,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:38,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:38,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:38,951 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:38,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 1263 transitions, 253670 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:38,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:38,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:38,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:44,971 INFO L129 PetriNetUnfolder]: 245/4083 cut-off events. [2021-08-13 18:00:44,972 INFO L130 PetriNetUnfolder]: For 2456241/2656031 co-relation queries the response was YES. [2021-08-13 18:00:45,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134072 conditions, 4083 events. 245/4083 cut-off events. For 2456241/2656031 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62400 event pairs, 0 based on Foata normal form. 75/4036 useless extension candidates. Maximal degree in co-relation 108191. Up to 781 conditions per place. [2021-08-13 18:00:45,053 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 743 selfloop transitions, 239 changer transitions 260/1262 dead transitions. [2021-08-13 18:00:45,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 1262 transitions, 255950 flow [2021-08-13 18:00:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:45,054 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:45,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:45,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:45,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:45,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:45,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:45,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:45,055 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:45,055 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 722 predicate places. [2021-08-13 18:00:45,055 INFO L482 AbstractCegarLoop]: Abstraction has has 766 places, 1262 transitions, 255950 flow [2021-08-13 18:00:45,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:45,055 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:45,055 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] [2021-08-13 18:00:45,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-13 18:00:45,055 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:45,056 INFO L82 PathProgramCache]: Analyzing trace with hash 658202147, now seen corresponding path program 103 times [2021-08-13 18:00:45,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:45,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438810536] [2021-08-13 18:00:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:45,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:45,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:45,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:45,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:45,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:45,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:45,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:45,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:45,194 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:00:45,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:00:45,208 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:45,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:45,252 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:45,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:45,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:45,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438810536] [2021-08-13 18:00:45,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438810536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:45,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:45,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:45,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113865532] [2021-08-13 18:00:45,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:45,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:45,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:45,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:45,269 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:45,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 1262 transitions, 255950 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:45,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:45,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:45,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:51,269 INFO L129 PetriNetUnfolder]: 245/4083 cut-off events. [2021-08-13 18:00:51,269 INFO L130 PetriNetUnfolder]: For 2504832/2707854 co-relation queries the response was YES. [2021-08-13 18:00:51,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135213 conditions, 4083 events. 245/4083 cut-off events. For 2504832/2707854 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62374 event pairs, 0 based on Foata normal form. 75/4036 useless extension candidates. Maximal degree in co-relation 109195. Up to 780 conditions per place. [2021-08-13 18:00:51,350 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 738 selfloop transitions, 241 changer transitions 262/1261 dead transitions. [2021-08-13 18:00:51,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 1261 transitions, 258226 flow [2021-08-13 18:00:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:51,351 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:51,352 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:51,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:51,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:51,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:51,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,352 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,352 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 729 predicate places. [2021-08-13 18:00:51,352 INFO L482 AbstractCegarLoop]: Abstraction has has 773 places, 1261 transitions, 258226 flow [2021-08-13 18:00:51,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,353 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:51,353 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] [2021-08-13 18:00:51,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-13 18:00:51,353 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:51,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:51,353 INFO L82 PathProgramCache]: Analyzing trace with hash 953923129, now seen corresponding path program 104 times [2021-08-13 18:00:51,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:51,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632351117] [2021-08-13 18:00:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:51,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:51,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:51,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:51,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:51,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:51,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:51,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:51,388 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:00:51,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:00:51,400 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:51,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:51,414 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:51,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:51,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:51,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632351117] [2021-08-13 18:00:51,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632351117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:51,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:51,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:51,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158735146] [2021-08-13 18:00:51,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:51,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:51,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:51,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:51,430 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:51,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1261 transitions, 258226 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:51,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:51,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:51,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:00:57,290 INFO L129 PetriNetUnfolder]: 245/4080 cut-off events. [2021-08-13 18:00:57,290 INFO L130 PetriNetUnfolder]: For 2827285/3088156 co-relation queries the response was YES. [2021-08-13 18:00:57,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136346 conditions, 4080 events. 245/4080 cut-off events. For 2827285/3088156 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62358 event pairs, 0 based on Foata normal form. 88/4045 useless extension candidates. Maximal degree in co-relation 110193. Up to 779 conditions per place. [2021-08-13 18:00:57,371 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 736 selfloop transitions, 239 changer transitions 265/1260 dead transitions. [2021-08-13 18:00:57,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 1260 transitions, 260498 flow [2021-08-13 18:00:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:00:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:00:57,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:00:57,372 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:00:57,372 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:00:57,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:00:57,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:00:57,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:00:57,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:57,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:57,373 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:57,373 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 736 predicate places. [2021-08-13 18:00:57,373 INFO L482 AbstractCegarLoop]: Abstraction has has 780 places, 1260 transitions, 260498 flow [2021-08-13 18:00:57,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:57,374 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:00:57,374 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] [2021-08-13 18:00:57,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-13 18:00:57,374 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:00:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:00:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash -750195291, now seen corresponding path program 105 times [2021-08-13 18:00:57,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:00:57,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882797115] [2021-08-13 18:00:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:00:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:00:57,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:57,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:00:57,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:57,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:00:57,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:00:57,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:00:57,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:00:57,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:00:57,400 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:00:57,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:00:57,412 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:00:57,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:00:57,430 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:00:57,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:00:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:00:57,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:00:57,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882797115] [2021-08-13 18:00:57,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882797115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:00:57,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:00:57,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:00:57,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370212939] [2021-08-13 18:00:57,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:00:57,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:00:57,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:00:57,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:00:57,449 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:00:57,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 1260 transitions, 260498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:00:57,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:00:57,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:00:57,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:02,597 INFO L129 PetriNetUnfolder]: 245/4081 cut-off events. [2021-08-13 18:01:02,597 INFO L130 PetriNetUnfolder]: For 2597863/2807337 co-relation queries the response was YES. [2021-08-13 18:01:02,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137485 conditions, 4081 events. 245/4081 cut-off events. For 2597863/2807337 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62317 event pairs, 0 based on Foata normal form. 73/4032 useless extension candidates. Maximal degree in co-relation 111199. Up to 778 conditions per place. [2021-08-13 18:01:02,676 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 733 selfloop transitions, 241 changer transitions 265/1259 dead transitions. [2021-08-13 18:01:02,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 1259 transitions, 262766 flow [2021-08-13 18:01:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:02,676 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:02,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:02,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:02,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:02,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:02,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:02,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:02,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:02,677 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 743 predicate places. [2021-08-13 18:01:02,677 INFO L482 AbstractCegarLoop]: Abstraction has has 787 places, 1259 transitions, 262766 flow [2021-08-13 18:01:02,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:02,678 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:02,678 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] [2021-08-13 18:01:02,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-13 18:01:02,678 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:02,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1349013381, now seen corresponding path program 106 times [2021-08-13 18:01:02,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:02,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805840825] [2021-08-13 18:01:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:02,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:02,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:02,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:02,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:02,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:02,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:02,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:01:02,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:01:02,715 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:02,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:02,732 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:02,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:02,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:02,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805840825] [2021-08-13 18:01:02,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805840825] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:02,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:02,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:02,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902694531] [2021-08-13 18:01:02,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:02,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:02,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:02,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:02,751 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:02,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 1259 transitions, 262766 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:02,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:02,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:02,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:07,730 INFO L129 PetriNetUnfolder]: 245/4080 cut-off events. [2021-08-13 18:01:07,731 INFO L130 PetriNetUnfolder]: For 2647653/2860359 co-relation queries the response was YES. [2021-08-13 18:01:07,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138618 conditions, 4080 events. 245/4080 cut-off events. For 2647653/2860359 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62272 event pairs, 0 based on Foata normal form. 73/4031 useless extension candidates. Maximal degree in co-relation 112201. Up to 777 conditions per place. [2021-08-13 18:01:07,810 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 736 selfloop transitions, 237 changer transitions 265/1258 dead transitions. [2021-08-13 18:01:07,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 1258 transitions, 265030 flow [2021-08-13 18:01:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:07,811 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:07,811 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:07,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:07,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:07,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:07,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:07,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:07,812 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:07,812 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 750 predicate places. [2021-08-13 18:01:07,812 INFO L482 AbstractCegarLoop]: Abstraction has has 794 places, 1258 transitions, 265030 flow [2021-08-13 18:01:07,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:07,812 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:07,812 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] [2021-08-13 18:01:07,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-13 18:01:07,812 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1390549345, now seen corresponding path program 107 times [2021-08-13 18:01:07,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:07,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686300078] [2021-08-13 18:01:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:07,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:07,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:07,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:07,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:07,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:07,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:07,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:07,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:01:07,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:07,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:07,857 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:07,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:07,872 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:07,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:07,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:07,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686300078] [2021-08-13 18:01:07,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686300078] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:07,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:07,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:07,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107393250] [2021-08-13 18:01:07,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:07,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:07,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:07,913 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:07,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 1258 transitions, 265030 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:07,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:07,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:07,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:12,999 INFO L129 PetriNetUnfolder]: 245/4077 cut-off events. [2021-08-13 18:01:12,999 INFO L130 PetriNetUnfolder]: For 2997226/3270559 co-relation queries the response was YES. [2021-08-13 18:01:13,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139745 conditions, 4077 events. 245/4077 cut-off events. For 2997226/3270559 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62332 event pairs, 0 based on Foata normal form. 88/4042 useless extension candidates. Maximal degree in co-relation 113199. Up to 776 conditions per place. [2021-08-13 18:01:13,078 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 735 selfloop transitions, 232 changer transitions 270/1257 dead transitions. [2021-08-13 18:01:13,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 1257 transitions, 267290 flow [2021-08-13 18:01:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:13,079 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:13,079 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:13,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:13,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:13,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:13,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:13,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:13,080 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:13,080 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 757 predicate places. [2021-08-13 18:01:13,080 INFO L482 AbstractCegarLoop]: Abstraction has has 801 places, 1257 transitions, 267290 flow [2021-08-13 18:01:13,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:13,080 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:13,080 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] [2021-08-13 18:01:13,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-13 18:01:13,080 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:13,080 INFO L82 PathProgramCache]: Analyzing trace with hash -964170957, now seen corresponding path program 108 times [2021-08-13 18:01:13,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:13,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416359532] [2021-08-13 18:01:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:13,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:13,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:13,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:13,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:13,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:13,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:13,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:01:13,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 18:01:13,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 18:01:13,123 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:13,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:13,140 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:13,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:13,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:13,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416359532] [2021-08-13 18:01:13,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416359532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:13,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:13,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:13,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896380006] [2021-08-13 18:01:13,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:13,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:13,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:13,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:13,159 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:13,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1257 transitions, 267290 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:13,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:13,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:13,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:17,843 INFO L129 PetriNetUnfolder]: 245/4078 cut-off events. [2021-08-13 18:01:17,844 INFO L130 PetriNetUnfolder]: For 2754292/2973474 co-relation queries the response was YES. [2021-08-13 18:01:17,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140878 conditions, 4078 events. 245/4078 cut-off events. For 2754292/2973474 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62309 event pairs, 0 based on Foata normal form. 75/4031 useless extension candidates. Maximal degree in co-relation 114205. Up to 775 conditions per place. [2021-08-13 18:01:17,923 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 733 selfloop transitions, 231 changer transitions 272/1256 dead transitions. [2021-08-13 18:01:17,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 1256 transitions, 269546 flow [2021-08-13 18:01:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:17,924 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:17,924 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:17,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:17,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:17,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:17,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:17,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:17,925 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:17,925 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 764 predicate places. [2021-08-13 18:01:17,925 INFO L482 AbstractCegarLoop]: Abstraction has has 808 places, 1256 transitions, 269546 flow [2021-08-13 18:01:17,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:17,925 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:17,925 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] [2021-08-13 18:01:17,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-13 18:01:17,925 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:17,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:17,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1933658721, now seen corresponding path program 109 times [2021-08-13 18:01:17,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:17,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138317719] [2021-08-13 18:01:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:17,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:17,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:17,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:17,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:17,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:17,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:17,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:17,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:17,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 18:01:17,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 18:01:17,960 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:17,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:17,976 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:17,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:17,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:17,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138317719] [2021-08-13 18:01:17,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138317719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:17,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:17,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:17,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693674645] [2021-08-13 18:01:17,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:17,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:17,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:17,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:17,995 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:17,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 1256 transitions, 269546 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:17,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:17,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:17,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:22,895 INFO L129 PetriNetUnfolder]: 245/4076 cut-off events. [2021-08-13 18:01:22,895 INFO L130 PetriNetUnfolder]: For 2805464/3027878 co-relation queries the response was YES. [2021-08-13 18:01:22,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142003 conditions, 4076 events. 245/4076 cut-off events. For 2805464/3027878 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62279 event pairs, 0 based on Foata normal form. 75/4029 useless extension candidates. Maximal degree in co-relation 115205. Up to 774 conditions per place. [2021-08-13 18:01:22,979 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 725 selfloop transitions, 236 changer transitions 274/1255 dead transitions. [2021-08-13 18:01:22,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 1255 transitions, 271798 flow [2021-08-13 18:01:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:22,980 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:22,980 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:22,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:22,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:22,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:22,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:22,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:22,981 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:22,981 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 771 predicate places. [2021-08-13 18:01:22,981 INFO L482 AbstractCegarLoop]: Abstraction has has 815 places, 1255 transitions, 271798 flow [2021-08-13 18:01:22,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:22,981 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:22,981 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] [2021-08-13 18:01:22,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-13 18:01:22,981 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:22,981 INFO L82 PathProgramCache]: Analyzing trace with hash 116405423, now seen corresponding path program 110 times [2021-08-13 18:01:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:22,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081388688] [2021-08-13 18:01:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:23,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:23,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:23,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:23,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:23,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:23,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:23,010 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 18:01:23,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 18:01:23,019 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 18:01:23,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 18:01:23,031 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:23,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:23,048 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:23,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:23,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:23,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081388688] [2021-08-13 18:01:23,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081388688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:23,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:23,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:23,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958828539] [2021-08-13 18:01:23,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:23,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:23,068 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:23,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 1255 transitions, 271798 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:23,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:23,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:23,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:28,051 INFO L129 PetriNetUnfolder]: 245/4074 cut-off events. [2021-08-13 18:01:28,052 INFO L130 PetriNetUnfolder]: For 3131483/3415549 co-relation queries the response was YES. [2021-08-13 18:01:28,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143126 conditions, 4074 events. 245/4074 cut-off events. For 3131483/3415549 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62222 event pairs, 0 based on Foata normal form. 86/4037 useless extension candidates. Maximal degree in co-relation 116205. Up to 773 conditions per place. [2021-08-13 18:01:28,132 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 728 selfloop transitions, 232 changer transitions 274/1254 dead transitions. [2021-08-13 18:01:28,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1254 transitions, 274046 flow [2021-08-13 18:01:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:28,133 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:28,133 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:28,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:28,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:28,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:28,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,134 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,134 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 778 predicate places. [2021-08-13 18:01:28,134 INFO L482 AbstractCegarLoop]: Abstraction has has 822 places, 1254 transitions, 274046 flow [2021-08-13 18:01:28,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,134 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:28,134 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] [2021-08-13 18:01:28,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-13 18:01:28,135 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:28,135 INFO L82 PathProgramCache]: Analyzing trace with hash -396891409, now seen corresponding path program 111 times [2021-08-13 18:01:28,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:28,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836655521] [2021-08-13 18:01:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:28,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:28,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:28,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:28,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:28,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:28,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:28,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:28,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:01:28,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 18:01:28,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 18:01:28,179 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:28,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:28,196 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:28,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:28,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:28,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836655521] [2021-08-13 18:01:28,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836655521] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:28,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:28,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:28,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282575334] [2021-08-13 18:01:28,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:28,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:28,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:28,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:28,215 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:28,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 1254 transitions, 274046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:28,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:28,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:28,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:33,600 INFO L129 PetriNetUnfolder]: 245/4073 cut-off events. [2021-08-13 18:01:33,600 INFO L130 PetriNetUnfolder]: For 2902961/3131827 co-relation queries the response was YES. [2021-08-13 18:01:33,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144249 conditions, 4073 events. 245/4073 cut-off events. For 2902961/3131827 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62185 event pairs, 0 based on Foata normal form. 73/4023 useless extension candidates. Maximal degree in co-relation 117207. Up to 772 conditions per place. [2021-08-13 18:01:33,684 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 721 selfloop transitions, 236 changer transitions 276/1253 dead transitions. [2021-08-13 18:01:33,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1253 transitions, 276290 flow [2021-08-13 18:01:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:33,685 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:33,685 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:33,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:33,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:33,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:33,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:33,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:33,686 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:33,686 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 785 predicate places. [2021-08-13 18:01:33,686 INFO L482 AbstractCegarLoop]: Abstraction has has 829 places, 1253 transitions, 276290 flow [2021-08-13 18:01:33,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:33,686 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:33,686 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:01:33,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-13 18:01:33,686 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1856890861, now seen corresponding path program 112 times [2021-08-13 18:01:33,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:33,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380199005] [2021-08-13 18:01:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:33,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:33,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:33,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:33,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:33,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:33,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:33,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:33,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:01:33,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 18:01:33,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 18:01:33,731 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:33,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:33,749 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:33,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:33,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:33,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380199005] [2021-08-13 18:01:33,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380199005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:33,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:33,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:33,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060339767] [2021-08-13 18:01:33,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:33,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:33,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:33,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:33,768 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:33,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 1253 transitions, 276290 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:33,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:33,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:33,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:01:38,959 INFO L129 PetriNetUnfolder]: 245/4072 cut-off events. [2021-08-13 18:01:38,959 INFO L130 PetriNetUnfolder]: For 3088647/3335610 co-relation queries the response was YES. [2021-08-13 18:01:39,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145370 conditions, 4072 events. 245/4072 cut-off events. For 3088647/3335610 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62225 event pairs, 0 based on Foata normal form. 74/4023 useless extension candidates. Maximal degree in co-relation 118209. Up to 771 conditions per place. [2021-08-13 18:01:39,217 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 725 selfloop transitions, 228 changer transitions 279/1252 dead transitions. [2021-08-13 18:01:39,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 1252 transitions, 278530 flow [2021-08-13 18:01:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:01:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:01:39,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 18:01:39,218 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 18:01:39,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 18:01:39,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 18:01:39,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:01:39,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 18:01:39,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:39,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:39,219 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:39,219 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 792 predicate places. [2021-08-13 18:01:39,219 INFO L482 AbstractCegarLoop]: Abstraction has has 836 places, 1252 transitions, 278530 flow [2021-08-13 18:01:39,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:39,219 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:01:39,219 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] [2021-08-13 18:01:39,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-13 18:01:39,220 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 18:01:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:01:39,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1807760683, now seen corresponding path program 113 times [2021-08-13 18:01:39,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:01:39,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715865757] [2021-08-13 18:01:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:01:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:01:39,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:39,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:01:39,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:39,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:01:39,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:39,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 18:01:39,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:01:39,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 18:01:39,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 18:01:39,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 18:01:39,264 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 18:01:39,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 18:01:39,282 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 18:01:39,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 18:01:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:01:39,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:01:39,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715865757] [2021-08-13 18:01:39,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715865757] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:01:39,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:01:39,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:01:39,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280654439] [2021-08-13 18:01:39,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:01:39,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:01:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:01:39,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:01:39,301 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 18:01:39,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 1252 transitions, 278530 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:01:39,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:01:39,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 18:01:39,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand