/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 12:59:46,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 12:59:46,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 12:59:46,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-30 12:59:46,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-30 12:59:46,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-30 12:59:46,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-30 12:59:46,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-30 12:59:46,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-30 12:59:46,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-30 12:59:46,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-30 12:59:46,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-30 12:59:46,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-30 12:59:46,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-30 12:59:46,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-30 12:59:46,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-30 12:59:46,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-30 12:59:46,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-30 12:59:46,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-30 12:59:46,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-30 12:59:46,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-30 12:59:46,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-30 12:59:46,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-30 12:59:46,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-30 12:59:46,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-30 12:59:46,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-30 12:59:46,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-30 12:59:46,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-30 12:59:46,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-30 12:59:46,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-30 12:59:46,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-30 12:59:46,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-30 12:59:46,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-30 12:59:46,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-30 12:59:46,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-30 12:59:46,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-30 12:59:46,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-30 12:59:46,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-30 12:59:46,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-30 12:59:46,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-30 12:59:46,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-30 12:59:46,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-30 12:59:46,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 12:59:46,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 12:59:46,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 12:59:46,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 12:59:46,261 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 12:59:46,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 12:59:46,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 12:59:46,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 12:59:46,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 12:59:46,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 12:59:46,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 12:59:46,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 12:59:46,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 12:59:46,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 12:59:46,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 12:59:46,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-30 12:59:46,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 12:59:46,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 12:59:46,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 12:59:46,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 12:59:46,529 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 12:59:46,530 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 12:59:46,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr05.bpl [2021-06-30 12:59:46,540 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr05.bpl' [2021-06-30 12:59:46,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 12:59:46,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 12:59:46,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 12:59:46,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 12:59:46,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 12:59:46,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 12:59:46,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 12:59:46,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 12:59:46,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 12:59:46,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... [2021-06-30 12:59:46,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 12:59:46,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 12:59:46,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 12:59:46,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 12:59:46,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 12:59:46,653 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 12:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 12:59:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 12:59:46,655 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 12:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 12:59:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 12:59:46,656 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 12:59:46,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 12:59:46,774 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 12:59:46,776 INFO L202 PluginConnector]: Adding new model incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 12:59:46 BoogieIcfgContainer [2021-06-30 12:59:46,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 12:59:46,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 12:59:46,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 12:59:46,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 12:59:46,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 12:59:46" (1/2) ... [2021-06-30 12:59:46,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc41f23 and model type incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 12:59:46, skipping insertion in model container [2021-06-30 12:59:46,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 12:59:46" (2/2) ... [2021-06-30 12:59:46,781 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr05.bpl [2021-06-30 12:59:46,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 12:59:46,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 12:59:46,790 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 12:59:46,888 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-30 12:59:46,921 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-30 12:59:46,934 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 12:59:46,935 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 12:59:46,935 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 12:59:46,935 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 12:59:46,935 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 12:59:46,935 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 12:59:46,935 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 12:59:46,935 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 12:59:46,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 34 transitions, 108 flow [2021-06-30 12:59:46,980 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-06-30 12:59:46,981 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-30 12:59:46,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 29 events. 5/29 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-06-30 12:59:46,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 34 transitions, 108 flow [2021-06-30 12:59:46,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 27 transitions, 84 flow [2021-06-30 12:59:47,003 INFO L129 PetriNetUnfolder]: 5/26 cut-off events. [2021-06-30 12:59:47,004 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-30 12:59:47,004 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-30 12:59:47,005 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 12:59:47,005 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:59:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:59:47,013 INFO L82 PathProgramCache]: Analyzing trace with hash -816577503, now seen corresponding path program 1 times [2021-06-30 12:59:47,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:59:47,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775414088] [2021-06-30 12:59:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:59:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:47,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:59:47,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:59:47,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775414088] [2021-06-30 12:59:47,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775414088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 12:59:47,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 12:59:47,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-30 12:59:47,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333319593] [2021-06-30 12:59:47,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-30 12:59:47,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:59:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-30 12:59:47,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 12:59:47,195 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 34 [2021-06-30 12:59:47,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-30 12:59:47,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 34 [2021-06-30 12:59:47,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-30 12:59:47,273 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][18], [48#true, 17#L12true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, 25#L28true, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, 29#L26true, ThreadThread1of1ForFork4NotInUse, 15#L26true]) [2021-06-30 12:59:47,273 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,273 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,274 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,274 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,274 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][24], [48#true, 18#L28true, 36#L13true, 20#L26true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, 29#L26true, ThreadThread1of1ForFork4InUse, 15#L26true]) [2021-06-30 12:59:47,274 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,274 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,274 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,274 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,280 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][18], [48#true, 17#L12true, 22#L26true, ThreadThread1of1ForFork1InUse, 25#L28true, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, ThreadThread1of1ForFork4NotInUse, 15#L26true, 31#L28true]) [2021-06-30 12:59:47,280 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,280 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-30 12:59:47,280 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,280 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,281 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][24], [48#true, 18#L28true, 20#L26true, 36#L13true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, ThreadThread1of1ForFork4InUse, 31#L28true, 15#L26true]) [2021-06-30 12:59:47,282 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is not cut-off event [2021-06-30 12:59:47,282 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is not cut-off event [2021-06-30 12:59:47,282 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is not cut-off event [2021-06-30 12:59:47,282 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is not cut-off event [2021-06-30 12:59:47,288 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][24], [48#true, 18#L28true, 20#L26true, 36#L13true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, 29#L26true, 15#L26true, ThreadThread1of1ForFork4InUse]) [2021-06-30 12:59:47,288 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,289 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,289 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,289 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,290 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,302 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][24], [48#true, 18#L28true, 20#L26true, 36#L13true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, 15#L26true, ThreadThread1of1ForFork4InUse, 31#L28true]) [2021-06-30 12:59:47,303 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,303 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,303 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,303 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,303 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,304 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][24], [48#true, 18#L28true, 20#L26true, 36#L13true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, 29#L26true, 30#L28true, ThreadThread1of1ForFork4InUse]) [2021-06-30 12:59:47,305 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,305 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,305 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,305 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,308 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][24], [48#true, 18#L28true, 20#L26true, 36#L13true, 22#L26true, ThreadThread1of1ForFork1InUse, ThreadThread1of1ForFork0InUse, ThreadThread1of1ForFork2InUse, ThreadThread1of1ForFork3InUse, 30#L28true, ThreadThread1of1ForFork4InUse, 31#L28true]) [2021-06-30 12:59:47,308 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,308 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,308 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,308 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,316 INFO L129 PetriNetUnfolder]: 257/372 cut-off events. [2021-06-30 12:59:47,316 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-06-30 12:59:47,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 372 events. 257/372 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1099 event pairs, 57 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 688. Up to 317 conditions per place. [2021-06-30 12:59:47,322 INFO L132 encePairwiseOnDemand]: 27/34 looper letters, 11 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2021-06-30 12:59:47,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 128 flow [2021-06-30 12:59:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-30 12:59:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-30 12:59:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2021-06-30 12:59:47,333 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-06-30 12:59:47,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2021-06-30 12:59:47,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2021-06-30 12:59:47,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-30 12:59:47,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2021-06-30 12:59:47,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,340 INFO L185 Difference]: Start difference. First operand has 38 places, 27 transitions, 84 flow. Second operand 3 states and 81 transitions. [2021-06-30 12:59:47,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 128 flow [2021-06-30 12:59:47,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 108 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-06-30 12:59:47,345 INFO L241 Difference]: Finished difference. Result has 31 places, 32 transitions, 104 flow [2021-06-30 12:59:47,346 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2021-06-30 12:59:47,347 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2021-06-30 12:59:47,347 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 104 flow [2021-06-30 12:59:47,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,347 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-30 12:59:47,347 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 12:59:47,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-30 12:59:47,347 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:59:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:59:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash 971790687, now seen corresponding path program 1 times [2021-06-30 12:59:47,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:59:47,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735706691] [2021-06-30 12:59:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:59:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:47,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-30 12:59:47,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 12:59:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:59:47,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:59:47,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735706691] [2021-06-30 12:59:47,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735706691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 12:59:47,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 12:59:47,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 12:59:47,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260542629] [2021-06-30 12:59:47,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 12:59:47,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:59:47,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 12:59:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 12:59:47,424 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 34 [2021-06-30 12:59:47,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-30 12:59:47,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 34 [2021-06-30 12:59:47,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-30 12:59:47,463 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][26], [48#true, 17#L12true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), 25#L28true, 29#L26true, 15#L26true]) [2021-06-30 12:59:47,464 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,464 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,464 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,464 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,464 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][35], [48#true, 18#L28true, 36#L13true, 20#L26true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), 29#L26true, 15#L26true]) [2021-06-30 12:59:47,464 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,464 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,464 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,465 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,470 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][27], [48#true, 17#L12true, Black: 50#(= x 0), 53#true, 22#L26true, 25#L28true, 31#L28true, 15#L26true]) [2021-06-30 12:59:47,470 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][36], [48#true, 18#L28true, Black: 50#(= x 0), 36#L13true, 20#L26true, 53#true, 22#L26true, 31#L28true, 15#L26true]) [2021-06-30 12:59:47,471 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,471 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,472 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][35], [48#true, 18#L28true, 20#L26true, 36#L13true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), 29#L26true, 15#L26true]) [2021-06-30 12:59:47,473 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,473 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,473 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,473 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,473 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,475 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][34], [48#true, 18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, 15#L26true, 31#L28true]) [2021-06-30 12:59:47,475 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,476 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,476 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,476 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,477 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][34], [48#true, 18#L28true, 20#L26true, 36#L13true, Black: 50#(= x 0), 53#true, 22#L26true, 29#L26true, 30#L28true]) [2021-06-30 12:59:47,477 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,477 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,477 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,477 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,478 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][36], [48#true, 18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, 31#L28true, 15#L26true]) [2021-06-30 12:59:47,479 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,479 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,479 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,479 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,479 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,479 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][36], [48#true, 18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, 29#L26true, 30#L28true]) [2021-06-30 12:59:47,479 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,480 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,480 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,480 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,482 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][34], [48#true, 18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, 30#L28true, 31#L28true]) [2021-06-30 12:59:47,482 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,482 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,482 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,482 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,483 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][34], [48#true, 18#L28true, 20#L26true, 36#L13true, Black: 50#(= x 0), 53#true, 22#L26true, 29#L26true, 15#L26true]) [2021-06-30 12:59:47,483 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,483 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,484 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,484 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,491 INFO L129 PetriNetUnfolder]: 332/488 cut-off events. [2021-06-30 12:59:47,492 INFO L130 PetriNetUnfolder]: For 122/230 co-relation queries the response was YES. [2021-06-30 12:59:47,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 488 events. 332/488 cut-off events. For 122/230 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1565 event pairs, 21 based on Foata normal form. 7/479 useless extension candidates. Maximal degree in co-relation 1121. Up to 362 conditions per place. [2021-06-30 12:59:47,497 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 11 selfloop transitions, 21 changer transitions 0/47 dead transitions. [2021-06-30 12:59:47,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 218 flow [2021-06-30 12:59:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 12:59:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-30 12:59:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2021-06-30 12:59:47,503 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2021-06-30 12:59:47,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2021-06-30 12:59:47,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2021-06-30 12:59:47,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-30 12:59:47,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2021-06-30 12:59:47,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 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) [2021-06-30 12:59:47,509 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 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) [2021-06-30 12:59:47,509 INFO L185 Difference]: Start difference. First operand has 31 places, 32 transitions, 104 flow. Second operand 4 states and 112 transitions. [2021-06-30 12:59:47,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 218 flow [2021-06-30 12:59:47,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-30 12:59:47,515 INFO L241 Difference]: Finished difference. Result has 35 places, 47 transitions, 248 flow [2021-06-30 12:59:47,515 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=35, PETRI_TRANSITIONS=47} [2021-06-30 12:59:47,516 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2021-06-30 12:59:47,516 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 47 transitions, 248 flow [2021-06-30 12:59:47,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,516 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-30 12:59:47,516 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 12:59:47,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-30 12:59:47,516 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:59:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:59:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2145095935, now seen corresponding path program 1 times [2021-06-30 12:59:47,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:59:47,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121584635] [2021-06-30 12:59:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:59:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:47,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,582 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-30 12:59:47,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 12:59:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:59:47,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:59:47,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121584635] [2021-06-30 12:59:47,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121584635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:47,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110389468] [2021-06-30 12:59:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:47,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-30 12:59:47,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:59:47,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:47,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:47,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:47,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:47,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:47,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:59:47,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110389468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:47,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:59:47,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-30 12:59:47,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816152317] [2021-06-30 12:59:47,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 12:59:47,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:59:47,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 12:59:47,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 12:59:47,794 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 34 [2021-06-30 12:59:47,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 47 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-30 12:59:47,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 34 [2021-06-30 12:59:47,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-30 12:59:47,867 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][26], [17#L12true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), 25#L28true, Black: 55#(and (<= x 0) (<= 0 x)), 29#L26true, 63#(and (<= 1 x) (<= x 1)), 15#L26true]) [2021-06-30 12:59:47,867 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,867 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,867 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,867 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,867 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][41], [18#L28true, Black: 50#(= x 0), 36#L13true, 20#L26true, 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 55#(and (<= x 0) (<= 0 x)), 29#L26true, 15#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:47,868 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,868 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,868 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,868 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,880 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][22], [64#(and (<= x 2) (<= 2 x)), 17#L12true, Black: 50#(= x 0), 53#true, 22#L26true, 25#L28true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 15#L26true, 31#L28true]) [2021-06-30 12:59:47,881 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][38], [64#(and (<= x 2) (<= 2 x)), 18#L28true, 36#L13true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 15#L26true, 31#L28true]) [2021-06-30 12:59:47,881 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,881 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,884 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][41], [18#L28true, 20#L26true, 36#L13true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 55#(and (<= x 0) (<= 0 x)), 29#L26true, 63#(and (<= 1 x) (<= x 1)), 15#L26true]) [2021-06-30 12:59:47,885 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,885 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,885 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,885 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,885 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,893 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][44], [64#(and (<= x 2) (<= 2 x)), 18#L28true, Black: 50#(= x 0), 20#L26true, 36#L13true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 31#L28true, 15#L26true]) [2021-06-30 12:59:47,893 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,893 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,893 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,893 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][44], [64#(and (<= x 2) (<= 2 x)), 18#L28true, 20#L26true, 36#L13true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, 30#L28true]) [2021-06-30 12:59:47,895 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][38], [64#(and (<= x 2) (<= 2 x)), 18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 31#L28true, 15#L26true]) [2021-06-30 12:59:47,895 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,895 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,896 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][38], [64#(and (<= x 2) (<= 2 x)), 18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, 30#L28true]) [2021-06-30 12:59:47,896 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,896 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:47,896 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,896 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:47,901 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][52], [18#L28true, 20#L26true, 36#L13true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, 15#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:47,901 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,902 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,902 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][43], [18#L28true, 20#L26true, Black: 50#(= x 0), 36#L13true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 60#true, 30#L28true, 31#L28true]) [2021-06-30 12:59:47,902 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,903 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,903 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:47,903 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:47,915 INFO L129 PetriNetUnfolder]: 470/706 cut-off events. [2021-06-30 12:59:47,915 INFO L130 PetriNetUnfolder]: For 712/1200 co-relation queries the response was YES. [2021-06-30 12:59:47,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2360 conditions, 706 events. 470/706 cut-off events. For 712/1200 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2570 event pairs, 20 based on Foata normal form. 23/714 useless extension candidates. Maximal degree in co-relation 2280. Up to 384 conditions per place. [2021-06-30 12:59:47,923 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 11 selfloop transitions, 46 changer transitions 0/72 dead transitions. [2021-06-30 12:59:47,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 72 transitions, 492 flow [2021-06-30 12:59:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 12:59:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-30 12:59:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2021-06-30 12:59:47,928 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8411764705882353 [2021-06-30 12:59:47,928 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 143 transitions. [2021-06-30 12:59:47,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 143 transitions. [2021-06-30 12:59:47,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-30 12:59:47,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 143 transitions. [2021-06-30 12:59:47,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,931 INFO L185 Difference]: Start difference. First operand has 35 places, 47 transitions, 248 flow. Second operand 5 states and 143 transitions. [2021-06-30 12:59:47,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 72 transitions, 492 flow [2021-06-30 12:59:47,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 72 transitions, 482 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-06-30 12:59:47,937 INFO L241 Difference]: Finished difference. Result has 40 places, 72 transitions, 508 flow [2021-06-30 12:59:47,937 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=40, PETRI_TRANSITIONS=72} [2021-06-30 12:59:47,938 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2021-06-30 12:59:47,938 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 72 transitions, 508 flow [2021-06-30 12:59:47,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:47,938 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-30 12:59:47,938 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 12:59:48,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-30 12:59:48,153 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:59:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:59:48,154 INFO L82 PathProgramCache]: Analyzing trace with hash -810914495, now seen corresponding path program 1 times [2021-06-30 12:59:48,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:59:48,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918501155] [2021-06-30 12:59:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:59:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:48,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,240 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-30 12:59:48,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 12:59:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:59:48,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:59:48,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918501155] [2021-06-30 12:59:48,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918501155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:48,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550490012] [2021-06-30 12:59:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:48,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-30 12:59:48,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:59:48,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:59:48,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550490012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:48,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:59:48,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-30 12:59:48,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018689600] [2021-06-30 12:59:48,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-30 12:59:48,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:59:48,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-30 12:59:48,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 12:59:48,435 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 34 [2021-06-30 12:59:48,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 72 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:48,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-30 12:59:48,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 34 [2021-06-30 12:59:48,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-30 12:59:48,522 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][25], [17#L12true, 130#(and (<= 1 x) (<= x 1)), Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), 25#L28true, Black: 55#(and (<= x 0) (<= 0 x)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 15#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:48,522 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,522 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,522 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,522 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,522 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][40], [18#L28true, 130#(and (<= 1 x) (<= x 1)), 36#L13true, 20#L26true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 55#(and (<= x 0) (<= 0 x)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 15#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:48,522 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,523 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,523 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,523 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,539 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][26], [64#(and (<= x 2) (<= 2 x)), 17#L12true, 131#(and (<= x 2) (<= 2 x)), Black: 50#(= x 0), 53#true, 22#L26true, 25#L28true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true, 15#L26true]) [2021-06-30 12:59:48,539 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,539 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-30 12:59:48,539 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,540 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,540 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:48,540 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,540 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,540 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,540 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,541 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][40], [130#(and (<= 1 x) (<= x 1)), 18#L28true, 36#L13true, 20#L26true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 55#(and (<= x 0) (<= 0 x)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 15#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:48,541 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,541 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,541 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,541 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,541 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,548 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][43], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:48,548 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,548 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,549 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,549 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,550 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][43], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 30#L28true]) [2021-06-30 12:59:48,550 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,550 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,550 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,550 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:48,552 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 30#L28true]) [2021-06-30 12:59:48,552 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,552 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:48,553 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,553 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:48,566 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][54], [130#(and (<= 1 x) (<= x 1)), 36#L13true, 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:48,566 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,566 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,566 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,566 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,567 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][44], [36#L13true, 132#(and (<= 3 x) (<= x 3)), 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 55#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 60#true, 30#L28true, Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:48,567 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,567 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,567 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:48,567 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:48,593 INFO L129 PetriNetUnfolder]: 635/969 cut-off events. [2021-06-30 12:59:48,593 INFO L130 PetriNetUnfolder]: For 1102/1634 co-relation queries the response was YES. [2021-06-30 12:59:48,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 969 events. 635/969 cut-off events. For 1102/1634 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3811 event pairs, 40 based on Foata normal form. 32/986 useless extension candidates. Maximal degree in co-relation 3823. Up to 546 conditions per place. [2021-06-30 12:59:48,604 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 11 selfloop transitions, 81 changer transitions 0/107 dead transitions. [2021-06-30 12:59:48,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 107 transitions, 942 flow [2021-06-30 12:59:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-30 12:59:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-30 12:59:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2021-06-30 12:59:48,605 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2021-06-30 12:59:48,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 174 transitions. [2021-06-30 12:59:48,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 174 transitions. [2021-06-30 12:59:48,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-30 12:59:48,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 174 transitions. [2021-06-30 12:59:48,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.0) internal successors, (174), 6 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) [2021-06-30 12:59:48,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:48,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:48,608 INFO L185 Difference]: Start difference. First operand has 40 places, 72 transitions, 508 flow. Second operand 6 states and 174 transitions. [2021-06-30 12:59:48,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 107 transitions, 942 flow [2021-06-30 12:59:48,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 107 transitions, 794 flow, removed 66 selfloop flow, removed 1 redundant places. [2021-06-30 12:59:48,619 INFO L241 Difference]: Finished difference. Result has 45 places, 107 transitions, 830 flow [2021-06-30 12:59:48,619 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=830, PETRI_PLACES=45, PETRI_TRANSITIONS=107} [2021-06-30 12:59:48,619 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2021-06-30 12:59:48,619 INFO L482 AbstractCegarLoop]: Abstraction has has 45 places, 107 transitions, 830 flow [2021-06-30 12:59:48,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:48,619 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-30 12:59:48,619 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 12:59:48,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:48,836 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:59:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:59:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash -932983265, now seen corresponding path program 1 times [2021-06-30 12:59:48,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:59:48,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138967767] [2021-06-30 12:59:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:59:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:48,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,913 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-30 12:59:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 12:59:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:59:48,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:59:48,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138967767] [2021-06-30 12:59:48,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138967767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:48,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811491817] [2021-06-30 12:59:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:48,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-30 12:59:48,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:59:48,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:48,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:48,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:48,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 12:59:49,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811491817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:49,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:59:49,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-06-30 12:59:49,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249040928] [2021-06-30 12:59:49,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-30 12:59:49,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:59:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-30 12:59:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-30 12:59:49,043 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 34 [2021-06-30 12:59:49,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 107 transitions, 830 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:49,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-30 12:59:49,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 34 [2021-06-30 12:59:49,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-30 12:59:49,139 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][26], [17#L12true, 130#(and (<= 1 x) (<= x 1)), Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 129#(and (<= x 0) (<= 0 x)), 25#L28true, 204#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 63#(and (<= 1 x) (<= x 1)), 15#L26true]) [2021-06-30 12:59:49,139 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][41], [130#(and (<= 1 x) (<= x 1)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 22#L26true, 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,139 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,139 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][27], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 17#L12true, Black: 50#(= x 0), 53#true, 22#L26true, 25#L28true, Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:49,156 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][44], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:49,156 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,156 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,158 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][41], [130#(and (<= 1 x) (<= x 1)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 22#L26true, 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,158 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,158 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,158 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,158 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,158 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,176 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:49,176 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,176 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,176 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,176 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,178 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 30#L28true]) [2021-06-30 12:59:49,178 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,178 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,178 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,178 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][44], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:49,179 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][44], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 30#L28true]) [2021-06-30 12:59:49,179 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,179 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,180 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,180 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,197 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][52], [130#(and (<= 1 x) (<= x 1)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, Black: 62#(and (<= x 0) (<= 0 x)), 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,197 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,197 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,197 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,197 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,198 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][39], [132#(and (<= 3 x) (<= x 3)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 206#(and (<= 3 x) (<= x 3)), 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 56#(and (<= 1 x) (<= x 1)), 60#true, 30#L28true, Black: 62#(and (<= x 0) (<= 0 x)), 31#L28true]) [2021-06-30 12:59:49,198 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,198 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,198 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,198 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,245 INFO L129 PetriNetUnfolder]: 759/1167 cut-off events. [2021-06-30 12:59:49,245 INFO L130 PetriNetUnfolder]: For 747/1313 co-relation queries the response was YES. [2021-06-30 12:59:49,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4788 conditions, 1167 events. 759/1167 cut-off events. For 747/1313 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4740 event pairs, 49 based on Foata normal form. 35/1187 useless extension candidates. Maximal degree in co-relation 4667. Up to 701 conditions per place. [2021-06-30 12:59:49,256 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 11 selfloop transitions, 126 changer transitions 0/152 dead transitions. [2021-06-30 12:59:49,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 152 transitions, 1424 flow [2021-06-30 12:59:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-30 12:59:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-30 12:59:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2021-06-30 12:59:49,258 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8613445378151261 [2021-06-30 12:59:49,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 205 transitions. [2021-06-30 12:59:49,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 205 transitions. [2021-06-30 12:59:49,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-30 12:59:49,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 205 transitions. [2021-06-30 12:59:49,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:49,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:49,260 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:49,261 INFO L185 Difference]: Start difference. First operand has 45 places, 107 transitions, 830 flow. Second operand 7 states and 205 transitions. [2021-06-30 12:59:49,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 152 transitions, 1424 flow [2021-06-30 12:59:49,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 152 transitions, 1236 flow, removed 81 selfloop flow, removed 1 redundant places. [2021-06-30 12:59:49,276 INFO L241 Difference]: Finished difference. Result has 51 places, 152 transitions, 1282 flow [2021-06-30 12:59:49,276 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1282, PETRI_PLACES=51, PETRI_TRANSITIONS=152} [2021-06-30 12:59:49,276 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2021-06-30 12:59:49,276 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 152 transitions, 1282 flow [2021-06-30 12:59:49,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:49,276 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-30 12:59:49,276 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 12:59:49,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:49,493 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:59:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:59:49,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1261506061, now seen corresponding path program 1 times [2021-06-30 12:59:49,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:59:49,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224156855] [2021-06-30 12:59:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:59:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:49,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,595 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-30 12:59:49,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 12:59:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:59:49,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:59:49,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224156855] [2021-06-30 12:59:49,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224156855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:49,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308380341] [2021-06-30 12:59:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:59:49,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-30 12:59:49,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:59:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:49,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 12:59:49,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 12:59:49,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 12:59:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:59:49,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308380341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:59:49,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:59:49,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-06-30 12:59:49,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513439883] [2021-06-30 12:59:49,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-30 12:59:49,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:59:49,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-30 12:59:49,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-30 12:59:49,722 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 34 [2021-06-30 12:59:49,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 152 transitions, 1282 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:49,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-30 12:59:49,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 34 [2021-06-30 12:59:49,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-30 12:59:49,837 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][25], [130#(and (<= 1 x) (<= x 1)), Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 17#L12true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 203#(and (<= x 0) (<= 0 x)), 25#L28true, 285#(and (<= 1 x) (<= x 1)), 29#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,837 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,837 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,837 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,837 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,837 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][39], [130#(and (<= 1 x) (<= x 1)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 203#(and (<= x 0) (<= 0 x)), 285#(and (<= 1 x) (<= x 1)), 29#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,837 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,837 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,838 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,838 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,859 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([43] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][27], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 17#L12true, Black: 50#(= x 0), 53#true, 22#L26true, 25#L28true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 286#(and (<= x 2) (<= 2 x)), 31#L28true]) [2021-06-30 12:59:49,859 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,859 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,860 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-30 12:59:49,860 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,860 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][43], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 18#L28true, Black: 50#(= x 0), 20#L26true, 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 286#(and (<= x 2) (<= 2 x)), 31#L28true]) [2021-06-30 12:59:49,860 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,860 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,860 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,860 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,861 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][39], [130#(and (<= 1 x) (<= x 1)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 22#L26true, 56#(and (<= 1 x) (<= x 1)), Black: 203#(and (<= x 0) (<= 0 x)), 285#(and (<= 1 x) (<= x 1)), 29#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,861 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,861 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,861 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,861 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,861 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,912 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 286#(and (<= x 2) (<= 2 x)), 31#L28true]) [2021-06-30 12:59:49,912 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,912 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,912 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,912 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,930 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][42], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, 30#L28true, 286#(and (<= x 2) (<= 2 x))]) [2021-06-30 12:59:49,931 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,931 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,931 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,931 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,932 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][43], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 286#(and (<= x 2) (<= 2 x)), 31#L28true]) [2021-06-30 12:59:49,932 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,932 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,932 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,932 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,932 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,933 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][43], [64#(and (<= x 2) (<= 2 x)), 131#(and (<= x 2) (<= 2 x)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 205#(and (<= x 2) (<= 2 x)), 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 29#L26true, 286#(and (<= x 2) (<= 2 x)), 30#L28true]) [2021-06-30 12:59:49,933 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,933 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,933 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-06-30 12:59:49,933 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-06-30 12:59:49,951 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][57], [130#(and (<= 1 x) (<= x 1)), 36#L13true, Black: 129#(and (<= x 0) (<= 0 x)), 204#(and (<= 1 x) (<= x 1)), 15#L26true, 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 285#(and (<= 1 x) (<= x 1)), 29#L26true, 63#(and (<= 1 x) (<= x 1))]) [2021-06-30 12:59:49,951 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,951 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,951 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,951 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,952 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([49] L26-->L28: Formula: (= v_x_4 (+ v_x_5 1)) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x][40], [36#L13true, 132#(and (<= 3 x) (<= x 3)), Black: 129#(and (<= x 0) (<= 0 x)), 206#(and (<= 3 x) (<= x 3)), 18#L28true, 20#L26true, Black: 50#(= x 0), 53#true, 22#L26true, Black: 203#(and (<= x 0) (<= 0 x)), Black: 56#(and (<= 1 x) (<= x 1)), 60#true, 30#L28true, 287#(and (<= 3 x) (<= x 3)), 31#L28true]) [2021-06-30 12:59:49,952 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,952 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:49,952 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-06-30 12:59:49,952 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-06-30 12:59:50,003 INFO L129 PetriNetUnfolder]: 759/1163 cut-off events. [2021-06-30 12:59:50,004 INFO L130 PetriNetUnfolder]: For 891/1539 co-relation queries the response was YES. [2021-06-30 12:59:50,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 1163 events. 759/1163 cut-off events. For 891/1539 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4695 event pairs, 0 based on Foata normal form. 32/1180 useless extension candidates. Maximal degree in co-relation 5022. Up to 426 conditions per place. [2021-06-30 12:59:50,009 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 0 selfloop transitions, 0 changer transitions 191/191 dead transitions. [2021-06-30 12:59:50,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 191 transitions, 1906 flow [2021-06-30 12:59:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-30 12:59:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-30 12:59:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2021-06-30 12:59:50,010 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2021-06-30 12:59:50,010 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 220 transitions. [2021-06-30 12:59:50,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 220 transitions. [2021-06-30 12:59:50,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-30 12:59:50,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 220 transitions. [2021-06-30 12:59:50,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:50,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:50,012 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:50,012 INFO L185 Difference]: Start difference. First operand has 51 places, 152 transitions, 1282 flow. Second operand 8 states and 220 transitions. [2021-06-30 12:59:50,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 191 transitions, 1906 flow [2021-06-30 12:59:50,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 191 transitions, 1604 flow, removed 110 selfloop flow, removed 2 redundant places. [2021-06-30 12:59:50,027 INFO L241 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2021-06-30 12:59:50,027 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2021-06-30 12:59:50,027 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2021-06-30 12:59:50,027 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2021-06-30 12:59:50,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:59:50,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:59:50,239 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-30 12:59:50,240 INFO L202 PluginConnector]: Adding new model incr-decr05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.06 12:59:50 BasicIcfg [2021-06-30 12:59:50,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-30 12:59:50,241 INFO L168 Benchmark]: Toolchain (without parser) took 3679.55 ms. Allocated memory was 183.5 MB in the beginning and 237.0 MB in the end (delta: 53.5 MB). Free memory was 162.9 MB in the beginning and 162.7 MB in the end (delta: 173.4 kB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2021-06-30 12:59:50,241 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 183.5 MB. Free memory is still 163.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-30 12:59:50,241 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.28 ms. Allocated memory is still 183.5 MB. Free memory was 162.9 MB in the beginning and 161.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-30 12:59:50,241 INFO L168 Benchmark]: Boogie Preprocessor took 10.99 ms. Allocated memory is still 183.5 MB. Free memory was 161.5 MB in the beginning and 160.6 MB in the end (delta: 919.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-30 12:59:50,241 INFO L168 Benchmark]: RCFGBuilder took 181.15 ms. Allocated memory is still 183.5 MB. Free memory was 160.4 MB in the beginning and 151.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-30 12:59:50,241 INFO L168 Benchmark]: TraceAbstraction took 3463.19 ms. Allocated memory was 183.5 MB in the beginning and 237.0 MB in the end (delta: 53.5 MB). Free memory was 151.2 MB in the beginning and 162.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2021-06-30 12:59:50,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 183.5 MB. Free memory is still 163.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.28 ms. Allocated memory is still 183.5 MB. Free memory was 162.9 MB in the beginning and 161.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.99 ms. Allocated memory is still 183.5 MB. Free memory was 161.5 MB in the beginning and 160.6 MB in the end (delta: 919.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 181.15 ms. Allocated memory is still 183.5 MB. Free memory was 160.4 MB in the beginning and 151.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3463.19 ms. Allocated memory was 183.5 MB in the beginning and 237.0 MB in the end (delta: 53.5 MB). Free memory was 151.2 MB in the beginning and 162.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3305.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1121.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 52.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 846 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 372.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1282occurred in iteration=5, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.3ms SsaConstructionTime, 103.8ms SatisfiabilityAnalysisTime, 863.7ms InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 1462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 5/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...