/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:42:10,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:42:10,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:42:10,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:42:10,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:42:10,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:42:10,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:42:10,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:42:10,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:42:10,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:42:10,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:42:10,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:42:10,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:42:10,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:42:10,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:42:10,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:42:10,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:42:10,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:42:10,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:42:10,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:42:10,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:42:10,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:42:10,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:42:10,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:42:10,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:42:10,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:42:10,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:42:10,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:42:10,648 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-RepeatedSemanticLbe.epf [2021-03-25 17:42:10,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:42:10,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:42:10,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:42:10,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:42:10,668 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:42:10,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:42:10,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:42:10,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:42:10,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:42:10,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:42:10,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:42:10,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:42:10,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:42:10,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:42:10,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:42:10,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:42:10,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:42:10,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:42:10,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:42:10,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:42:10,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:42:10,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:42:10,671 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:42:10,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:42:10,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:42:10,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:42:10,976 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 17:42:10,976 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 17:42:10,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl [2021-03-25 17:42:10,978 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl' [2021-03-25 17:42:11,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:42:11,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 17:42:11,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:42:11,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:42:11,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:42:11,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:42:11,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:42:11,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:42:11,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:42:11,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... [2021-03-25 17:42:11,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:42:11,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:42:11,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:42:11,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:42:11,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:42:11,128 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 17:42:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:42:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:42:11,128 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-03-25 17:42:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-25 17:42:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-25 17:42:11,129 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:42:11,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:42:11,236 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-03-25 17:42:11,238 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:42:11 BoogieIcfgContainer [2021-03-25 17:42:11,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:42:11,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:42:11,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:42:11,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:42:11,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:42:11" (1/2) ... [2021-03-25 17:42:11,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36465032 and model type fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:42:11, skipping insertion in model container [2021-03-25 17:42:11,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:42:11" (2/2) ... [2021-03-25 17:42:11,246 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_unsafe.bpl [2021-03-25 17:42:11,254 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:42:11,262 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:42:11,263 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:42:11,294 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,295 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,296 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,296 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,306 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:42:11,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 17:42:11,356 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:42:11,356 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:42:11,357 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:42:11,357 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:42:11,357 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:42:11,357 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:42:11,357 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:42:11,357 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:42:11,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 10 transitions, 25 flow [2021-03-25 17:42:11,387 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 17:42:11,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:42:11,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:42:11,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 13 places, 10 transitions, 25 flow [2021-03-25 17:42:11,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 13 places, 10 transitions, 25 flow [2021-03-25 17:42:11,395 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:11,407 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 10 transitions, 25 flow [2021-03-25 17:42:11,411 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 10 transitions, 25 flow [2021-03-25 17:42:11,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 10 transitions, 25 flow [2021-03-25 17:42:11,421 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 17:42:11,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:42:11,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:42:11,424 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 17:42:11,649 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-25 17:42:11,649 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 17:42:11,651 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 257 [2021-03-25 17:42:11,658 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 17:42:11,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:42:11,658 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:11,659 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-25 17:42:11,659 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:42:11,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:11,663 INFO L82 PathProgramCache]: Analyzing trace with hash 59486, now seen corresponding path program 1 times [2021-03-25 17:42:11,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:11,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160405659] [2021-03-25 17:42:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:11,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:11,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:11,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:11,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:11,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160405659] [2021-03-25 17:42:11,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:11,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:42:11,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430139078] [2021-03-25 17:42:11,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:42:11,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:11,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:42:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:42:11,795 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 14 [2021-03-25 17:42:11,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 7 transitions, 19 flow. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:11,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:11,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 14 [2021-03-25 17:42:11,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:11,826 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-03-25 17:42:11,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:42:11,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 9. Up to 4 conditions per place. [2021-03-25 17:42:11,828 INFO L132 encePairwiseOnDemand]: 10/14 looper letters, 2 selfloop transitions, 3 changer transitions 1/7 dead transitions. [2021-03-25 17:42:11,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 29 flow [2021-03-25 17:42:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 17:42:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 17:42:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-03-25 17:42:11,837 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2021-03-25 17:42:11,837 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 18 transitions. [2021-03-25 17:42:11,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 18 transitions. [2021-03-25 17:42:11,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:11,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 18 transitions. [2021-03-25 17:42:11,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:11,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:11,843 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:11,844 INFO L185 Difference]: Start difference. First operand has 10 places, 7 transitions, 19 flow. Second operand 4 states and 18 transitions. [2021-03-25 17:42:11,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 29 flow [2021-03-25 17:42:11,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 29 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:11,847 INFO L241 Difference]: Finished difference. Result has 12 places, 5 transitions, 21 flow [2021-03-25 17:42:11,849 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=21, PETRI_PLACES=12, PETRI_TRANSITIONS=5} [2021-03-25 17:42:11,849 INFO L343 CegarLoopForPetriNet]: 10 programPoint places, 2 predicate places. [2021-03-25 17:42:11,849 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:11,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 5 transitions, 21 flow [2021-03-25 17:42:11,850 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 5 transitions, 21 flow [2021-03-25 17:42:11,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 5 transitions, 21 flow [2021-03-25 17:42:11,852 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 17:42:11,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:42:11,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:42:11,852 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 17:42:11,853 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:42:11,853 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:11,853 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 17:42:11,854 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 21 flow [2021-03-25 17:42:11,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:11,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:11,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 17:42:11,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:42:11,855 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:42:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:11,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1843844, now seen corresponding path program 1 times [2021-03-25 17:42:11,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:11,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496307944] [2021-03-25 17:42:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:42:11,860 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:42:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:42:11,863 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:42:11,873 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:42:11,873 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:42:11,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:42:11,874 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:42:11,875 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-25 17:42:11,879 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,879 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,880 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,880 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,880 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,880 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,881 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,881 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:11,884 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:42:11,884 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 17:42:11,886 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:42:11,886 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:42:11,886 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:42:11,886 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:42:11,886 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:42:11,886 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:42:11,886 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:42:11,886 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:42:11,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 17:42:11,891 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 17:42:11,891 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:42:11,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 18 events. 0/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 17:42:11,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 17:42:11,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-03-25 17:42:11,892 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:11,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 17:42:11,893 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 17:42:11,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 17:42:11,896 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 17:42:11,896 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:42:11,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 18 events. 0/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 17:42:11,896 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 17:42:12,055 INFO L154 LiptonReduction]: Checked pairs total: 134 [2021-03-25 17:42:12,055 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 17:42:12,055 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 163 [2021-03-25 17:42:12,058 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 17:42:12,058 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:42:12,058 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:12,058 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 17:42:12,059 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:12,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:12,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2581598, now seen corresponding path program 1 times [2021-03-25 17:42:12,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:12,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759838063] [2021-03-25 17:42:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:12,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:12,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:12,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:12,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759838063] [2021-03-25 17:42:12,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:12,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:42:12,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172808339] [2021-03-25 17:42:12,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 17:42:12,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:12,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 17:42:12,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 17:42:12,085 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2021-03-25 17:42:12,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 36 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:12,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2021-03-25 17:42:12,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:12,140 INFO L129 PetriNetUnfolder]: 32/73 cut-off events. [2021-03-25 17:42:12,140 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 17:42:12,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 73 events. 32/73 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 209 event pairs, 2 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 115. Up to 42 conditions per place. [2021-03-25 17:42:12,142 INFO L132 encePairwiseOnDemand]: 13/20 looper letters, 8 selfloop transitions, 10 changer transitions 0/20 dead transitions. [2021-03-25 17:42:12,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 93 flow [2021-03-25 17:42:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:42:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:42:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-03-25 17:42:12,143 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39 [2021-03-25 17:42:12,143 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 39 transitions. [2021-03-25 17:42:12,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 39 transitions. [2021-03-25 17:42:12,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:12,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 39 transitions. [2021-03-25 17:42:12,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,145 INFO L185 Difference]: Start difference. First operand has 17 places, 12 transitions, 36 flow. Second operand 5 states and 39 transitions. [2021-03-25 17:42:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 93 flow [2021-03-25 17:42:12,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 91 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:12,147 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 72 flow [2021-03-25 17:42:12,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2021-03-25 17:42:12,147 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 5 predicate places. [2021-03-25 17:42:12,147 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:12,147 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 16 transitions, 72 flow [2021-03-25 17:42:12,148 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 16 transitions, 72 flow [2021-03-25 17:42:12,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 16 transitions, 72 flow [2021-03-25 17:42:12,152 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2021-03-25 17:42:12,152 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:42:12,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 64 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 43. Up to 11 conditions per place. [2021-03-25 17:42:12,153 INFO L142 LiptonReduction]: Number of co-enabled transitions 70 [2021-03-25 17:42:12,174 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-25 17:42:12,174 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 17:42:12,174 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-25 17:42:12,175 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 72 flow [2021-03-25 17:42:12,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:12,176 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2021-03-25 17:42:12,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:42:12,176 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:12,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1814101293, now seen corresponding path program 1 times [2021-03-25 17:42:12,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:12,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175145986] [2021-03-25 17:42:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:42:12,182 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:42:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:42:12,185 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:42:12,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:42:12,187 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:42:12,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 17:42:12,187 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:42:12,188 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-25 17:42:12,192 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,192 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,192 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,192 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,192 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,193 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,193 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,193 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,193 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,193 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,193 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,194 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:12,197 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:42:12,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 17:42:12,198 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:42:12,198 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:42:12,198 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:42:12,198 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:42:12,198 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:42:12,198 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:42:12,198 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:42:12,198 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:42:12,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 20 transitions, 61 flow [2021-03-25 17:42:12,203 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-25 17:42:12,203 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 17:42:12,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 25 events. 0/25 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 17:42:12,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 20 transitions, 61 flow [2021-03-25 17:42:12,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 20 transitions, 61 flow [2021-03-25 17:42:12,204 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:12,204 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 20 transitions, 61 flow [2021-03-25 17:42:12,204 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 20 transitions, 61 flow [2021-03-25 17:42:12,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 20 transitions, 61 flow [2021-03-25 17:42:12,208 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-25 17:42:12,208 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 17:42:12,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 25 events. 0/25 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 17:42:12,209 INFO L142 LiptonReduction]: Number of co-enabled transitions 192 [2021-03-25 17:42:12,331 INFO L154 LiptonReduction]: Checked pairs total: 293 [2021-03-25 17:42:12,331 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 17:42:12,331 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-25 17:42:12,333 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 17:42:12,333 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:42:12,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:12,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 17:42:12,334 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash 3564828, now seen corresponding path program 1 times [2021-03-25 17:42:12,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:12,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203283358] [2021-03-25 17:42:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:12,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:12,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:12,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:12,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203283358] [2021-03-25 17:42:12,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:12,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:42:12,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474204964] [2021-03-25 17:42:12,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 17:42:12,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 17:42:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 17:42:12,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2021-03-25 17:42:12,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:12,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2021-03-25 17:42:12,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:12,463 INFO L129 PetriNetUnfolder]: 262/430 cut-off events. [2021-03-25 17:42:12,464 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-03-25 17:42:12,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 430 events. 262/430 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1614 event pairs, 42 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 683. Up to 367 conditions per place. [2021-03-25 17:42:12,473 INFO L132 encePairwiseOnDemand]: 18/27 looper letters, 19 selfloop transitions, 14 changer transitions 0/35 dead transitions. [2021-03-25 17:42:12,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 35 transitions, 176 flow [2021-03-25 17:42:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:42:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:42:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2021-03-25 17:42:12,475 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2021-03-25 17:42:12,475 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 59 transitions. [2021-03-25 17:42:12,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 59 transitions. [2021-03-25 17:42:12,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:12,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 59 transitions. [2021-03-25 17:42:12,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,478 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 53 flow. Second operand 5 states and 59 transitions. [2021-03-25 17:42:12,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 35 transitions, 176 flow [2021-03-25 17:42:12,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 35 transitions, 166 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:12,479 INFO L241 Difference]: Finished difference. Result has 28 places, 28 transitions, 125 flow [2021-03-25 17:42:12,480 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2021-03-25 17:42:12,480 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2021-03-25 17:42:12,480 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:12,480 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 28 transitions, 125 flow [2021-03-25 17:42:12,480 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 28 transitions, 125 flow [2021-03-25 17:42:12,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 28 transitions, 125 flow [2021-03-25 17:42:12,508 INFO L129 PetriNetUnfolder]: 28/79 cut-off events. [2021-03-25 17:42:12,508 INFO L130 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2021-03-25 17:42:12,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 79 events. 28/79 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 315 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 159. Up to 49 conditions per place. [2021-03-25 17:42:12,511 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-25 17:42:12,525 INFO L154 LiptonReduction]: Checked pairs total: 47 [2021-03-25 17:42:12,525 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:12,525 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-25 17:42:12,526 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 125 flow [2021-03-25 17:42:12,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,527 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:12,527 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:42:12,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 17:42:12,527 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash -869458420, now seen corresponding path program 1 times [2021-03-25 17:42:12,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:12,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813420178] [2021-03-25 17:42:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:12,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:12,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:12,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:12,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:12,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:12,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813420178] [2021-03-25 17:42:12,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:12,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 17:42:12,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414135965] [2021-03-25 17:42:12,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 17:42:12,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 17:42:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 17:42:12,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2021-03-25 17:42:12,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:12,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2021-03-25 17:42:12,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:12,931 INFO L129 PetriNetUnfolder]: 483/885 cut-off events. [2021-03-25 17:42:12,932 INFO L130 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2021-03-25 17:42:12,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 885 events. 483/885 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 4810 event pairs, 137 based on Foata normal form. 7/671 useless extension candidates. Maximal degree in co-relation 953. Up to 499 conditions per place. [2021-03-25 17:42:12,946 INFO L132 encePairwiseOnDemand]: 17/27 looper letters, 31 selfloop transitions, 39 changer transitions 0/72 dead transitions. [2021-03-25 17:42:12,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 72 transitions, 453 flow [2021-03-25 17:42:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:42:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:42:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2021-03-25 17:42:12,951 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2021-03-25 17:42:12,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 99 transitions. [2021-03-25 17:42:12,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 99 transitions. [2021-03-25 17:42:12,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:12,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 99 transitions. [2021-03-25 17:42:12,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:12,958 INFO L185 Difference]: Start difference. First operand has 28 places, 28 transitions, 125 flow. Second operand 7 states and 99 transitions. [2021-03-25 17:42:12,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 72 transitions, 453 flow [2021-03-25 17:42:12,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 72 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:42:12,966 INFO L241 Difference]: Finished difference. Result has 36 places, 58 transitions, 414 flow [2021-03-25 17:42:12,966 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=36, PETRI_TRANSITIONS=58} [2021-03-25 17:42:12,972 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2021-03-25 17:42:12,972 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:12,972 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 58 transitions, 414 flow [2021-03-25 17:42:12,972 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 58 transitions, 414 flow [2021-03-25 17:42:12,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 58 transitions, 414 flow [2021-03-25 17:42:13,007 INFO L129 PetriNetUnfolder]: 181/461 cut-off events. [2021-03-25 17:42:13,008 INFO L130 PetriNetUnfolder]: For 223/225 co-relation queries the response was YES. [2021-03-25 17:42:13,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 461 events. 181/461 cut-off events. For 223/225 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3120 event pairs, 24 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 1038. Up to 223 conditions per place. [2021-03-25 17:42:13,014 INFO L142 LiptonReduction]: Number of co-enabled transitions 334 [2021-03-25 17:42:13,057 INFO L154 LiptonReduction]: Checked pairs total: 175 [2021-03-25 17:42:13,057 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:13,058 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-03-25 17:42:13,060 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 58 transitions, 414 flow [2021-03-25 17:42:13,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,061 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:13,061 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:13,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 17:42:13,061 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:13,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1174639039, now seen corresponding path program 1 times [2021-03-25 17:42:13,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:13,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016574183] [2021-03-25 17:42:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:13,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:13,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:13,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:13,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:13,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:42:13,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016574183] [2021-03-25 17:42:13,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:13,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 17:42:13,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298627] [2021-03-25 17:42:13,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 17:42:13,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 17:42:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 17:42:13,122 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2021-03-25 17:42:13,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 58 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:13,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2021-03-25 17:42:13,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:13,357 INFO L129 PetriNetUnfolder]: 614/1240 cut-off events. [2021-03-25 17:42:13,357 INFO L130 PetriNetUnfolder]: For 1266/1266 co-relation queries the response was YES. [2021-03-25 17:42:13,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 1240 events. 614/1240 cut-off events. For 1266/1266 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7882 event pairs, 77 based on Foata normal form. 21/989 useless extension candidates. Maximal degree in co-relation 3267. Up to 523 conditions per place. [2021-03-25 17:42:13,370 INFO L132 encePairwiseOnDemand]: 17/27 looper letters, 29 selfloop transitions, 54 changer transitions 0/85 dead transitions. [2021-03-25 17:42:13,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 85 transitions, 721 flow [2021-03-25 17:42:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:42:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:42:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2021-03-25 17:42:13,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2021-03-25 17:42:13,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 101 transitions. [2021-03-25 17:42:13,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 101 transitions. [2021-03-25 17:42:13,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:13,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 101 transitions. [2021-03-25 17:42:13,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,378 INFO L185 Difference]: Start difference. First operand has 36 places, 58 transitions, 414 flow. Second operand 7 states and 101 transitions. [2021-03-25 17:42:13,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 85 transitions, 721 flow [2021-03-25 17:42:13,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 85 transitions, 719 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:13,387 INFO L241 Difference]: Finished difference. Result has 45 places, 69 transitions, 667 flow [2021-03-25 17:42:13,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=45, PETRI_TRANSITIONS=69} [2021-03-25 17:42:13,388 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 22 predicate places. [2021-03-25 17:42:13,388 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:13,388 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 69 transitions, 667 flow [2021-03-25 17:42:13,388 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 69 transitions, 667 flow [2021-03-25 17:42:13,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 69 transitions, 667 flow [2021-03-25 17:42:13,431 INFO L129 PetriNetUnfolder]: 220/619 cut-off events. [2021-03-25 17:42:13,431 INFO L130 PetriNetUnfolder]: For 954/966 co-relation queries the response was YES. [2021-03-25 17:42:13,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 619 events. 220/619 cut-off events. For 954/966 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 4718 event pairs, 36 based on Foata normal form. 8/475 useless extension candidates. Maximal degree in co-relation 1459. Up to 285 conditions per place. [2021-03-25 17:42:13,438 INFO L142 LiptonReduction]: Number of co-enabled transitions 390 [2021-03-25 17:42:13,510 INFO L154 LiptonReduction]: Checked pairs total: 302 [2021-03-25 17:42:13,510 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:13,510 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-25 17:42:13,515 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 69 transitions, 667 flow [2021-03-25 17:42:13,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,515 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:13,516 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:13,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 17:42:13,516 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:13,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1183390738, now seen corresponding path program 1 times [2021-03-25 17:42:13,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:13,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069631533] [2021-03-25 17:42:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:13,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:13,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:13,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:13,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:13,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069631533] [2021-03-25 17:42:13,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787662023] [2021-03-25 17:42:13,613 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 [2021-03-25 17:42:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:13,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 17:42:13,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 17:42:13,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 17:42:13,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:13,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 17:42:13,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:13,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:13,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:13,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:13,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:13,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:13,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:13,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:13,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:13,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:13,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:13,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:13,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:13,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:13,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 17:42:13,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 17:42:13,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419618814] [2021-03-25 17:42:13,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 17:42:13,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:13,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 17:42:13,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-25 17:42:13,749 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2021-03-25 17:42:13,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 69 transitions, 667 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:13,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2021-03-25 17:42:13,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:13,923 INFO L129 PetriNetUnfolder]: 470/1031 cut-off events. [2021-03-25 17:42:13,923 INFO L130 PetriNetUnfolder]: For 2524/2524 co-relation queries the response was YES. [2021-03-25 17:42:13,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 1031 events. 470/1031 cut-off events. For 2524/2524 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6690 event pairs, 69 based on Foata normal form. 62/868 useless extension candidates. Maximal degree in co-relation 3733. Up to 450 conditions per place. [2021-03-25 17:42:13,934 INFO L132 encePairwiseOnDemand]: 18/27 looper letters, 25 selfloop transitions, 54 changer transitions 0/81 dead transitions. [2021-03-25 17:42:13,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 81 transitions, 914 flow [2021-03-25 17:42:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:42:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:42:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2021-03-25 17:42:13,935 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2021-03-25 17:42:13,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 74 transitions. [2021-03-25 17:42:13,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 74 transitions. [2021-03-25 17:42:13,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:13,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 74 transitions. [2021-03-25 17:42:13,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:13,937 INFO L185 Difference]: Start difference. First operand has 45 places, 69 transitions, 667 flow. Second operand 7 states and 74 transitions. [2021-03-25 17:42:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 81 transitions, 914 flow [2021-03-25 17:42:13,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 897 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-03-25 17:42:13,948 INFO L241 Difference]: Finished difference. Result has 51 places, 69 transitions, 806 flow [2021-03-25 17:42:13,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=806, PETRI_PLACES=51, PETRI_TRANSITIONS=69} [2021-03-25 17:42:13,948 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 28 predicate places. [2021-03-25 17:42:13,948 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:13,948 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 69 transitions, 806 flow [2021-03-25 17:42:13,949 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 69 transitions, 806 flow [2021-03-25 17:42:13,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 69 transitions, 806 flow [2021-03-25 17:42:13,989 INFO L129 PetriNetUnfolder]: 194/617 cut-off events. [2021-03-25 17:42:13,990 INFO L130 PetriNetUnfolder]: For 1200/1208 co-relation queries the response was YES. [2021-03-25 17:42:13,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3028 conditions, 617 events. 194/617 cut-off events. For 1200/1208 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 4986 event pairs, 30 based on Foata normal form. 4/471 useless extension candidates. Maximal degree in co-relation 2155. Up to 277 conditions per place. [2021-03-25 17:42:13,997 INFO L142 LiptonReduction]: Number of co-enabled transitions 344 [2021-03-25 17:42:14,109 INFO L154 LiptonReduction]: Checked pairs total: 588 [2021-03-25 17:42:14,109 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 17:42:14,109 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 161 [2021-03-25 17:42:14,111 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 69 transitions, 812 flow [2021-03-25 17:42:14,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:14,111 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:14,111 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:14,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-03-25 17:42:14,333 INFO L428 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:14,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1183407079, now seen corresponding path program 2 times [2021-03-25 17:42:14,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:14,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463989966] [2021-03-25 17:42:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:14,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:14,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:14,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:14,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:14,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:14,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:14,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:14,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:14,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:14,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:14,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463989966] [2021-03-25 17:42:14,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:14,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:42:14,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411775065] [2021-03-25 17:42:14,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 17:42:14,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:14,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 17:42:14,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 17:42:14,397 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2021-03-25 17:42:14,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 69 transitions, 812 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:14,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:14,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2021-03-25 17:42:14,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:14,676 INFO L129 PetriNetUnfolder]: 399/899 cut-off events. [2021-03-25 17:42:14,676 INFO L130 PetriNetUnfolder]: For 2667/2667 co-relation queries the response was YES. [2021-03-25 17:42:14,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 899 events. 399/899 cut-off events. For 2667/2667 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6085 event pairs, 81 based on Foata normal form. 31/760 useless extension candidates. Maximal degree in co-relation 3344. Up to 475 conditions per place. [2021-03-25 17:42:14,687 INFO L132 encePairwiseOnDemand]: 17/30 looper letters, 37 selfloop transitions, 46 changer transitions 0/85 dead transitions. [2021-03-25 17:42:14,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 1069 flow [2021-03-25 17:42:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 17:42:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 17:42:14,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2021-03-25 17:42:14,689 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.42 [2021-03-25 17:42:14,689 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 126 transitions. [2021-03-25 17:42:14,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 126 transitions. [2021-03-25 17:42:14,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:14,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 126 transitions. [2021-03-25 17:42:14,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:14,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:14,691 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:14,692 INFO L185 Difference]: Start difference. First operand has 51 places, 69 transitions, 812 flow. Second operand 10 states and 126 transitions. [2021-03-25 17:42:14,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 1069 flow [2021-03-25 17:42:14,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 931 flow, removed 29 selfloop flow, removed 5 redundant places. [2021-03-25 17:42:14,704 INFO L241 Difference]: Finished difference. Result has 58 places, 69 transitions, 804 flow [2021-03-25 17:42:14,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=804, PETRI_PLACES=58, PETRI_TRANSITIONS=69} [2021-03-25 17:42:14,705 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 35 predicate places. [2021-03-25 17:42:14,705 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:14,705 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 69 transitions, 804 flow [2021-03-25 17:42:14,705 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 69 transitions, 804 flow [2021-03-25 17:42:14,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 69 transitions, 804 flow [2021-03-25 17:42:14,756 INFO L129 PetriNetUnfolder]: 198/633 cut-off events. [2021-03-25 17:42:14,757 INFO L130 PetriNetUnfolder]: For 1690/1691 co-relation queries the response was YES. [2021-03-25 17:42:14,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 633 events. 198/633 cut-off events. For 1690/1691 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 5139 event pairs, 35 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2443. Up to 219 conditions per place. [2021-03-25 17:42:14,765 INFO L142 LiptonReduction]: Number of co-enabled transitions 316 [2021-03-25 17:42:14,869 INFO L154 LiptonReduction]: Checked pairs total: 342 [2021-03-25 17:42:14,869 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 17:42:14,869 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 164 [2021-03-25 17:42:14,870 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 69 transitions, 834 flow [2021-03-25 17:42:14,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:14,870 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:14,870 INFO L263 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2021-03-25 17:42:14,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 17:42:14,870 INFO L428 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:14,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1968914058, now seen corresponding path program 1 times [2021-03-25 17:42:14,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:14,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778102886] [2021-03-25 17:42:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:42:14,885 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:42:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:42:14,894 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:42:14,896 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:42:14,896 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:42:14,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 17:42:14,896 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 17:42:14,898 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-25 17:42:14,903 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,904 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,904 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,904 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,906 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,907 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,907 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,907 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,907 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,907 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,908 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,908 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,908 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,908 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,908 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,908 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:42:14,913 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:42:14,913 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 17:42:14,915 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:42:14,915 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:42:14,915 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:42:14,915 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:42:14,915 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:42:14,915 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:42:14,915 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:42:14,915 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:42:14,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 25 transitions, 82 flow [2021-03-25 17:42:14,919 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-25 17:42:14,920 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 17:42:14,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 32 events. 0/32 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 17:42:14,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 25 transitions, 82 flow [2021-03-25 17:42:14,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 25 transitions, 82 flow [2021-03-25 17:42:14,921 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:14,921 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 25 transitions, 82 flow [2021-03-25 17:42:14,921 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 25 transitions, 82 flow [2021-03-25 17:42:14,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 25 transitions, 82 flow [2021-03-25 17:42:14,926 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-25 17:42:14,926 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 17:42:14,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 32 events. 0/32 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 17:42:14,927 INFO L142 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-25 17:42:15,151 INFO L154 LiptonReduction]: Checked pairs total: 525 [2021-03-25 17:42:15,152 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 17:42:15,152 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 231 [2021-03-25 17:42:15,153 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 17:42:15,153 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:42:15,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:15,153 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 17:42:15,153 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:15,153 INFO L82 PathProgramCache]: Analyzing trace with hash 4857500, now seen corresponding path program 1 times [2021-03-25 17:42:15,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:15,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762507927] [2021-03-25 17:42:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:15,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:15,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:15,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:15,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762507927] [2021-03-25 17:42:15,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:15,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:42:15,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924751472] [2021-03-25 17:42:15,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 17:42:15,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:15,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 17:42:15,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 17:42:15,190 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:15,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:15,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:15,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:15,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:15,372 INFO L129 PetriNetUnfolder]: 1592/2271 cut-off events. [2021-03-25 17:42:15,372 INFO L130 PetriNetUnfolder]: For 726/726 co-relation queries the response was YES. [2021-03-25 17:42:15,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4932 conditions, 2271 events. 1592/2271 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9593 event pairs, 444 based on Foata normal form. 8/1665 useless extension candidates. Maximal degree in co-relation 3555. Up to 2164 conditions per place. [2021-03-25 17:42:15,393 INFO L132 encePairwiseOnDemand]: 23/34 looper letters, 26 selfloop transitions, 18 changer transitions 0/46 dead transitions. [2021-03-25 17:42:15,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 249 flow [2021-03-25 17:42:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 17:42:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 17:42:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-03-25 17:42:15,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2021-03-25 17:42:15,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-03-25 17:42:15,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-03-25 17:42:15,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:15,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-03-25 17:42:15,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:15,396 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) [2021-03-25 17:42:15,396 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) [2021-03-25 17:42:15,396 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 72 flow. Second operand 5 states and 75 transitions. [2021-03-25 17:42:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 249 flow [2021-03-25 17:42:15,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 225 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:15,398 INFO L241 Difference]: Finished difference. Result has 34 places, 36 transitions, 162 flow [2021-03-25 17:42:15,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2021-03-25 17:42:15,399 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2021-03-25 17:42:15,399 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:15,399 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 36 transitions, 162 flow [2021-03-25 17:42:15,399 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 36 transitions, 162 flow [2021-03-25 17:42:15,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 36 transitions, 162 flow [2021-03-25 17:42:15,412 INFO L129 PetriNetUnfolder]: 136/267 cut-off events. [2021-03-25 17:42:15,412 INFO L130 PetriNetUnfolder]: For 6/14 co-relation queries the response was YES. [2021-03-25 17:42:15,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 267 events. 136/267 cut-off events. For 6/14 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1383 event pairs, 16 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 538. Up to 209 conditions per place. [2021-03-25 17:42:15,415 INFO L142 LiptonReduction]: Number of co-enabled transitions 330 [2021-03-25 17:42:15,430 INFO L154 LiptonReduction]: Checked pairs total: 105 [2021-03-25 17:42:15,431 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:15,431 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 17:42:15,432 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 162 flow [2021-03-25 17:42:15,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:15,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:15,432 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:42:15,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 17:42:15,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:15,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:15,433 INFO L82 PathProgramCache]: Analyzing trace with hash 372927568, now seen corresponding path program 1 times [2021-03-25 17:42:15,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:15,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99051213] [2021-03-25 17:42:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:15,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:15,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:15,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:15,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:15,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:15,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99051213] [2021-03-25 17:42:15,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:15,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 17:42:15,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432068022] [2021-03-25 17:42:15,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 17:42:15,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 17:42:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 17:42:15,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:15,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:15,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:15,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:15,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:15,975 INFO L129 PetriNetUnfolder]: 3563/5455 cut-off events. [2021-03-25 17:42:15,975 INFO L130 PetriNetUnfolder]: For 1731/1731 co-relation queries the response was YES. [2021-03-25 17:42:15,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14917 conditions, 5455 events. 3563/5455 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 31993 event pairs, 1129 based on Foata normal form. 11/3980 useless extension candidates. Maximal degree in co-relation 5472. Up to 3176 conditions per place. [2021-03-25 17:42:16,027 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 47 selfloop transitions, 49 changer transitions 0/98 dead transitions. [2021-03-25 17:42:16,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 98 transitions, 623 flow [2021-03-25 17:42:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:42:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:42:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2021-03-25 17:42:16,028 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5462184873949579 [2021-03-25 17:42:16,028 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2021-03-25 17:42:16,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2021-03-25 17:42:16,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:16,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2021-03-25 17:42:16,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:16,029 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) [2021-03-25 17:42:16,029 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) [2021-03-25 17:42:16,030 INFO L185 Difference]: Start difference. First operand has 34 places, 36 transitions, 162 flow. Second operand 7 states and 130 transitions. [2021-03-25 17:42:16,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 98 transitions, 623 flow [2021-03-25 17:42:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 98 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:42:16,033 INFO L241 Difference]: Finished difference. Result has 42 places, 74 transitions, 527 flow [2021-03-25 17:42:16,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=42, PETRI_TRANSITIONS=74} [2021-03-25 17:42:16,033 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2021-03-25 17:42:16,033 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:16,034 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 74 transitions, 527 flow [2021-03-25 17:42:16,034 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 74 transitions, 527 flow [2021-03-25 17:42:16,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 74 transitions, 527 flow [2021-03-25 17:42:16,137 INFO L129 PetriNetUnfolder]: 923/1883 cut-off events. [2021-03-25 17:42:16,137 INFO L130 PetriNetUnfolder]: For 715/785 co-relation queries the response was YES. [2021-03-25 17:42:16,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5966 conditions, 1883 events. 923/1883 cut-off events. For 715/785 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14240 event pairs, 126 based on Foata normal form. 0/1271 useless extension candidates. Maximal degree in co-relation 5575. Up to 1127 conditions per place. [2021-03-25 17:42:16,162 INFO L142 LiptonReduction]: Number of co-enabled transitions 604 [2021-03-25 17:42:16,468 INFO L154 LiptonReduction]: Checked pairs total: 259 [2021-03-25 17:42:16,468 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:16,468 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 435 [2021-03-25 17:42:16,469 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 74 transitions, 527 flow [2021-03-25 17:42:16,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:16,469 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:16,469 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:16,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 17:42:16,470 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1297027777, now seen corresponding path program 1 times [2021-03-25 17:42:16,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:16,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095881581] [2021-03-25 17:42:16,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:16,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:16,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:16,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:16,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:16,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:16,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:16,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:16,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:16,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:16,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:42:16,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095881581] [2021-03-25 17:42:16,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:16,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 17:42:16,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68183635] [2021-03-25 17:42:16,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 17:42:16,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:16,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 17:42:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 17:42:16,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:16,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 74 transitions, 527 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:16,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:16,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:16,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:17,160 INFO L129 PetriNetUnfolder]: 4938/7930 cut-off events. [2021-03-25 17:42:17,161 INFO L130 PetriNetUnfolder]: For 7549/7549 co-relation queries the response was YES. [2021-03-25 17:42:17,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29197 conditions, 7930 events. 4938/7930 cut-off events. For 7549/7549 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 53043 event pairs, 581 based on Foata normal form. 33/5982 useless extension candidates. Maximal degree in co-relation 17144. Up to 3923 conditions per place. [2021-03-25 17:42:17,236 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 43 selfloop transitions, 82 changer transitions 0/127 dead transitions. [2021-03-25 17:42:17,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 127 transitions, 1063 flow [2021-03-25 17:42:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:42:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:42:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2021-03-25 17:42:17,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5504201680672269 [2021-03-25 17:42:17,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2021-03-25 17:42:17,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2021-03-25 17:42:17,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:17,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2021-03-25 17:42:17,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:17,239 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) [2021-03-25 17:42:17,239 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) [2021-03-25 17:42:17,239 INFO L185 Difference]: Start difference. First operand has 42 places, 74 transitions, 527 flow. Second operand 7 states and 131 transitions. [2021-03-25 17:42:17,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 127 transitions, 1063 flow [2021-03-25 17:42:17,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 127 transitions, 1061 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:17,254 INFO L241 Difference]: Finished difference. Result has 51 places, 101 transitions, 968 flow [2021-03-25 17:42:17,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=968, PETRI_PLACES=51, PETRI_TRANSITIONS=101} [2021-03-25 17:42:17,255 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2021-03-25 17:42:17,255 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:17,255 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 101 transitions, 968 flow [2021-03-25 17:42:17,256 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 101 transitions, 968 flow [2021-03-25 17:42:17,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 101 transitions, 968 flow [2021-03-25 17:42:17,425 INFO L129 PetriNetUnfolder]: 1217/2681 cut-off events. [2021-03-25 17:42:17,425 INFO L130 PetriNetUnfolder]: For 3196/3365 co-relation queries the response was YES. [2021-03-25 17:42:17,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11170 conditions, 2681 events. 1217/2681 cut-off events. For 3196/3365 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 22589 event pairs, 162 based on Foata normal form. 14/1887 useless extension candidates. Maximal degree in co-relation 7707. Up to 1511 conditions per place. [2021-03-25 17:42:17,462 INFO L142 LiptonReduction]: Number of co-enabled transitions 844 [2021-03-25 17:42:18,402 INFO L154 LiptonReduction]: Checked pairs total: 705 [2021-03-25 17:42:18,402 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:18,402 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1147 [2021-03-25 17:42:18,403 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 101 transitions, 968 flow [2021-03-25 17:42:18,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:18,403 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:18,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:18,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 17:42:18,404 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:18,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1319192285, now seen corresponding path program 1 times [2021-03-25 17:42:18,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:18,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116812161] [2021-03-25 17:42:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:18,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:18,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:18,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:18,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:18,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116812161] [2021-03-25 17:42:18,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31064944] [2021-03-25 17:42:18,428 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 [2021-03-25 17:42:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:18,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 17:42:18,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 17:42:18,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 17:42:18,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:18,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 17:42:18,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:18,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:18,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:18,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:18,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:18,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:18,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:18,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:18,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:18,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:42:18,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:42:18,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:42:18,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:18,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:42:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:18,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 17:42:18,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 17:42:18,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79352589] [2021-03-25 17:42:18,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 17:42:18,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:18,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 17:42:18,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-25 17:42:18,558 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:18,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 101 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:18,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:18,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:18,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:19,225 INFO L129 PetriNetUnfolder]: 4631/7487 cut-off events. [2021-03-25 17:42:19,225 INFO L130 PetriNetUnfolder]: For 17334/17334 co-relation queries the response was YES. [2021-03-25 17:42:19,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36120 conditions, 7487 events. 4631/7487 cut-off events. For 17334/17334 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 49597 event pairs, 869 based on Foata normal form. 142/5756 useless extension candidates. Maximal degree in co-relation 21977. Up to 5257 conditions per place. [2021-03-25 17:42:19,290 INFO L132 encePairwiseOnDemand]: 23/34 looper letters, 69 selfloop transitions, 89 changer transitions 0/160 dead transitions. [2021-03-25 17:42:19,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 160 transitions, 1771 flow [2021-03-25 17:42:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:42:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:42:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2021-03-25 17:42:19,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2021-03-25 17:42:19,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 110 transitions. [2021-03-25 17:42:19,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 110 transitions. [2021-03-25 17:42:19,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:19,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 110 transitions. [2021-03-25 17:42:19,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:19,293 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) [2021-03-25 17:42:19,293 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) [2021-03-25 17:42:19,293 INFO L185 Difference]: Start difference. First operand has 51 places, 101 transitions, 968 flow. Second operand 7 states and 110 transitions. [2021-03-25 17:42:19,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 160 transitions, 1771 flow [2021-03-25 17:42:19,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 160 transitions, 1752 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-03-25 17:42:19,325 INFO L241 Difference]: Finished difference. Result has 57 places, 139 transitions, 1581 flow [2021-03-25 17:42:19,325 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=57, PETRI_TRANSITIONS=139} [2021-03-25 17:42:19,326 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2021-03-25 17:42:19,326 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:19,326 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 139 transitions, 1581 flow [2021-03-25 17:42:19,326 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 139 transitions, 1581 flow [2021-03-25 17:42:19,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 139 transitions, 1581 flow [2021-03-25 17:42:19,494 INFO L129 PetriNetUnfolder]: 1215/2772 cut-off events. [2021-03-25 17:42:19,494 INFO L130 PetriNetUnfolder]: For 4518/4808 co-relation queries the response was YES. [2021-03-25 17:42:19,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13627 conditions, 2772 events. 1215/2772 cut-off events. For 4518/4808 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 24601 event pairs, 145 based on Foata normal form. 32/1995 useless extension candidates. Maximal degree in co-relation 10073. Up to 1551 conditions per place. [2021-03-25 17:42:19,530 INFO L142 LiptonReduction]: Number of co-enabled transitions 1152 [2021-03-25 17:42:20,710 INFO L154 LiptonReduction]: Checked pairs total: 2417 [2021-03-25 17:42:20,710 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:20,710 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1384 [2021-03-25 17:42:20,711 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 139 transitions, 1581 flow [2021-03-25 17:42:20,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:20,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:20,711 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:20,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-25 17:42:20,926 INFO L428 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:20,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1324147321, now seen corresponding path program 1 times [2021-03-25 17:42:20,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:20,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208457469] [2021-03-25 17:42:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:20,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:20,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:20,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:20,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:20,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:20,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:20,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:20,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:20,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:20,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208457469] [2021-03-25 17:42:20,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:20,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:42:20,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103192144] [2021-03-25 17:42:20,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 17:42:20,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:20,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 17:42:20,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 17:42:20,957 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:20,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 139 transitions, 1581 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:20,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:20,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:20,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:21,700 INFO L129 PetriNetUnfolder]: 4333/7139 cut-off events. [2021-03-25 17:42:21,701 INFO L130 PetriNetUnfolder]: For 20267/20267 co-relation queries the response was YES. [2021-03-25 17:42:21,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38123 conditions, 7139 events. 4333/7139 cut-off events. For 20267/20267 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 48904 event pairs, 1244 based on Foata normal form. 76/5592 useless extension candidates. Maximal degree in co-relation 22968. Up to 4609 conditions per place. [2021-03-25 17:42:21,761 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 89 selfloop transitions, 83 changer transitions 0/174 dead transitions. [2021-03-25 17:42:21,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 174 transitions, 2113 flow [2021-03-25 17:42:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 17:42:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 17:42:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2021-03-25 17:42:21,763 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2021-03-25 17:42:21,763 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 184 transitions. [2021-03-25 17:42:21,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 184 transitions. [2021-03-25 17:42:21,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:21,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 184 transitions. [2021-03-25 17:42:21,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:21,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 34.0) internal successors, (374), 11 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:21,764 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 34.0) internal successors, (374), 11 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:21,764 INFO L185 Difference]: Start difference. First operand has 57 places, 139 transitions, 1581 flow. Second operand 10 states and 184 transitions. [2021-03-25 17:42:21,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 174 transitions, 2113 flow [2021-03-25 17:42:21,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 174 transitions, 1964 flow, removed 50 selfloop flow, removed 3 redundant places. [2021-03-25 17:42:21,845 INFO L241 Difference]: Finished difference. Result has 66 places, 140 transitions, 1654 flow [2021-03-25 17:42:21,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1654, PETRI_PLACES=66, PETRI_TRANSITIONS=140} [2021-03-25 17:42:21,845 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2021-03-25 17:42:21,845 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:21,845 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 140 transitions, 1654 flow [2021-03-25 17:42:21,845 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 140 transitions, 1654 flow [2021-03-25 17:42:21,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 140 transitions, 1654 flow [2021-03-25 17:42:22,015 INFO L129 PetriNetUnfolder]: 1240/2812 cut-off events. [2021-03-25 17:42:22,015 INFO L130 PetriNetUnfolder]: For 6118/6264 co-relation queries the response was YES. [2021-03-25 17:42:22,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14910 conditions, 2812 events. 1240/2812 cut-off events. For 6118/6264 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 24936 event pairs, 161 based on Foata normal form. 19/2036 useless extension candidates. Maximal degree in co-relation 10967. Up to 1243 conditions per place. [2021-03-25 17:42:22,052 INFO L142 LiptonReduction]: Number of co-enabled transitions 1118 [2021-03-25 17:42:23,500 INFO L154 LiptonReduction]: Checked pairs total: 1949 [2021-03-25 17:42:23,500 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:23,501 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1656 [2021-03-25 17:42:23,501 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 140 transitions, 1654 flow [2021-03-25 17:42:23,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:23,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:23,501 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:23,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 17:42:23,502 INFO L428 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1900822341, now seen corresponding path program 1 times [2021-03-25 17:42:23,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:23,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049324273] [2021-03-25 17:42:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:23,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:23,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:23,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:23,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:23,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:23,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:23,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:23,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:23,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:23,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:23,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049324273] [2021-03-25 17:42:23,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:23,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:42:23,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906344900] [2021-03-25 17:42:23,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 17:42:23,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:23,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 17:42:23,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 17:42:23,530 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:23,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 140 transitions, 1654 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:23,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:23,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:23,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:24,392 INFO L129 PetriNetUnfolder]: 5595/9263 cut-off events. [2021-03-25 17:42:24,392 INFO L130 PetriNetUnfolder]: For 36361/36361 co-relation queries the response was YES. [2021-03-25 17:42:24,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52087 conditions, 9263 events. 5595/9263 cut-off events. For 36361/36361 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 67112 event pairs, 1594 based on Foata normal form. 7/7163 useless extension candidates. Maximal degree in co-relation 36392. Up to 4627 conditions per place. [2021-03-25 17:42:24,476 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 81 selfloop transitions, 182 changer transitions 0/265 dead transitions. [2021-03-25 17:42:24,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 265 transitions, 3579 flow [2021-03-25 17:42:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 17:42:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 17:42:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2021-03-25 17:42:24,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5257352941176471 [2021-03-25 17:42:24,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 143 transitions. [2021-03-25 17:42:24,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 143 transitions. [2021-03-25 17:42:24,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:24,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 143 transitions. [2021-03-25 17:42:24,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:24,479 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) [2021-03-25 17:42:24,479 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) [2021-03-25 17:42:24,479 INFO L185 Difference]: Start difference. First operand has 66 places, 140 transitions, 1654 flow. Second operand 8 states and 143 transitions. [2021-03-25 17:42:24,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 265 transitions, 3579 flow [2021-03-25 17:42:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 265 transitions, 3213 flow, removed 50 selfloop flow, removed 6 redundant places. [2021-03-25 17:42:24,546 INFO L241 Difference]: Finished difference. Result has 72 places, 245 transitions, 3293 flow [2021-03-25 17:42:24,546 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3293, PETRI_PLACES=72, PETRI_TRANSITIONS=245} [2021-03-25 17:42:24,546 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2021-03-25 17:42:24,546 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:24,546 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 245 transitions, 3293 flow [2021-03-25 17:42:24,547 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 245 transitions, 3293 flow [2021-03-25 17:42:24,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 245 transitions, 3293 flow [2021-03-25 17:42:24,825 INFO L129 PetriNetUnfolder]: 1737/3937 cut-off events. [2021-03-25 17:42:24,825 INFO L130 PetriNetUnfolder]: For 13883/14137 co-relation queries the response was YES. [2021-03-25 17:42:24,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22723 conditions, 3937 events. 1737/3937 cut-off events. For 13883/14137 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 37502 event pairs, 165 based on Foata normal form. 35/2877 useless extension candidates. Maximal degree in co-relation 18874. Up to 1419 conditions per place. [2021-03-25 17:42:24,861 INFO L142 LiptonReduction]: Number of co-enabled transitions 1568 [2021-03-25 17:42:28,641 INFO L154 LiptonReduction]: Checked pairs total: 6156 [2021-03-25 17:42:28,641 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:28,642 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4096 [2021-03-25 17:42:28,642 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 245 transitions, 3293 flow [2021-03-25 17:42:28,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:28,642 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:28,642 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:28,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 17:42:28,642 INFO L428 AbstractCegarLoop]: === Iteration 7 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:28,643 INFO L82 PathProgramCache]: Analyzing trace with hash -728714660, now seen corresponding path program 1 times [2021-03-25 17:42:28,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:28,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224893945] [2021-03-25 17:42:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:28,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:28,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:28,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:28,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:28,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:28,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:28,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:28,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:28,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:28,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:28,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:28,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:42:28,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224893945] [2021-03-25 17:42:28,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:28,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:42:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071557719] [2021-03-25 17:42:28,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 17:42:28,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:28,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 17:42:28,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 17:42:28,671 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:28,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 245 transitions, 3293 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:28,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:28,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:28,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:30,011 INFO L129 PetriNetUnfolder]: 6991/12261 cut-off events. [2021-03-25 17:42:30,011 INFO L130 PetriNetUnfolder]: For 65146/65146 co-relation queries the response was YES. [2021-03-25 17:42:30,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75112 conditions, 12261 events. 6991/12261 cut-off events. For 65146/65146 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 101284 event pairs, 824 based on Foata normal form. 42/9677 useless extension candidates. Maximal degree in co-relation 52398. Up to 4181 conditions per place. [2021-03-25 17:42:30,134 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 49 selfloop transitions, 280 changer transitions 0/331 dead transitions. [2021-03-25 17:42:30,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 331 transitions, 4992 flow [2021-03-25 17:42:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 17:42:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 17:42:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2021-03-25 17:42:30,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2021-03-25 17:42:30,136 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 144 transitions. [2021-03-25 17:42:30,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 144 transitions. [2021-03-25 17:42:30,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:30,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 144 transitions. [2021-03-25 17:42:30,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:30,137 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) [2021-03-25 17:42:30,137 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) [2021-03-25 17:42:30,137 INFO L185 Difference]: Start difference. First operand has 72 places, 245 transitions, 3293 flow. Second operand 8 states and 144 transitions. [2021-03-25 17:42:30,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 331 transitions, 4992 flow [2021-03-25 17:42:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 331 transitions, 4986 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:30,278 INFO L241 Difference]: Finished difference. Result has 83 places, 309 transitions, 5185 flow [2021-03-25 17:42:30,278 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5185, PETRI_PLACES=83, PETRI_TRANSITIONS=309} [2021-03-25 17:42:30,278 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2021-03-25 17:42:30,278 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:30,279 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 309 transitions, 5185 flow [2021-03-25 17:42:30,279 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 309 transitions, 5185 flow [2021-03-25 17:42:30,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 309 transitions, 5185 flow [2021-03-25 17:42:30,782 INFO L129 PetriNetUnfolder]: 2209/5152 cut-off events. [2021-03-25 17:42:30,782 INFO L130 PetriNetUnfolder]: For 32191/33250 co-relation queries the response was YES. [2021-03-25 17:42:30,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36403 conditions, 5152 events. 2209/5152 cut-off events. For 32191/33250 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 52354 event pairs, 242 based on Foata normal form. 145/3921 useless extension candidates. Maximal degree in co-relation 29032. Up to 1897 conditions per place. [2021-03-25 17:42:30,837 INFO L142 LiptonReduction]: Number of co-enabled transitions 1876 [2021-03-25 17:42:40,123 INFO L154 LiptonReduction]: Checked pairs total: 8947 [2021-03-25 17:42:40,123 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:40,123 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9845 [2021-03-25 17:42:40,124 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 309 transitions, 5185 flow [2021-03-25 17:42:40,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:40,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:40,124 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:40,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 17:42:40,124 INFO L428 AbstractCegarLoop]: === Iteration 8 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:40,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1204358940, now seen corresponding path program 1 times [2021-03-25 17:42:40,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:40,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296261440] [2021-03-25 17:42:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:40,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:40,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:40,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:40,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:40,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:40,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:40,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:40,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:40,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:40,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:40,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:40,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:42:40,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296261440] [2021-03-25 17:42:40,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:40,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:42:40,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173461031] [2021-03-25 17:42:40,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 17:42:40,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 17:42:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 17:42:40,166 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:40,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 309 transitions, 5185 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:40,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:40,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:40,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:41,780 INFO L129 PetriNetUnfolder]: 7475/12612 cut-off events. [2021-03-25 17:42:41,780 INFO L130 PetriNetUnfolder]: For 102719/102719 co-relation queries the response was YES. [2021-03-25 17:42:41,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95909 conditions, 12612 events. 7475/12612 cut-off events. For 102719/102719 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 98475 event pairs, 1536 based on Foata normal form. 32/9750 useless extension candidates. Maximal degree in co-relation 77173. Up to 6498 conditions per place. [2021-03-25 17:42:41,894 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 116 selfloop transitions, 268 changer transitions 0/386 dead transitions. [2021-03-25 17:42:41,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 386 transitions, 7156 flow [2021-03-25 17:42:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 17:42:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 17:42:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2021-03-25 17:42:41,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5 [2021-03-25 17:42:41,899 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 170 transitions. [2021-03-25 17:42:41,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 170 transitions. [2021-03-25 17:42:41,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:41,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 170 transitions. [2021-03-25 17:42:41,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.0) internal successors, (170), 10 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) [2021-03-25 17:42:41,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 34.0) internal successors, (374), 11 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:41,905 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 34.0) internal successors, (374), 11 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:41,905 INFO L185 Difference]: Start difference. First operand has 83 places, 309 transitions, 5185 flow. Second operand 10 states and 170 transitions. [2021-03-25 17:42:41,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 386 transitions, 7156 flow [2021-03-25 17:42:42,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 386 transitions, 7098 flow, removed 29 selfloop flow, removed 0 redundant places. [2021-03-25 17:42:42,244 INFO L241 Difference]: Finished difference. Result has 96 places, 367 transitions, 7004 flow [2021-03-25 17:42:42,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5131, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7004, PETRI_PLACES=96, PETRI_TRANSITIONS=367} [2021-03-25 17:42:42,244 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2021-03-25 17:42:42,244 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:42,245 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 367 transitions, 7004 flow [2021-03-25 17:42:42,245 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 367 transitions, 7004 flow [2021-03-25 17:42:42,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 367 transitions, 7004 flow [2021-03-25 17:42:42,723 INFO L129 PetriNetUnfolder]: 2544/5709 cut-off events. [2021-03-25 17:42:42,724 INFO L130 PetriNetUnfolder]: For 37557/38380 co-relation queries the response was YES. [2021-03-25 17:42:42,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45189 conditions, 5709 events. 2544/5709 cut-off events. For 37557/38380 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 57018 event pairs, 222 based on Foata normal form. 155/4272 useless extension candidates. Maximal degree in co-relation 37876. Up to 2201 conditions per place. [2021-03-25 17:42:42,797 INFO L142 LiptonReduction]: Number of co-enabled transitions 2078 [2021-03-25 17:42:54,890 INFO L154 LiptonReduction]: Checked pairs total: 10584 [2021-03-25 17:42:54,890 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:42:54,890 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12646 [2021-03-25 17:42:54,890 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 367 transitions, 7004 flow [2021-03-25 17:42:54,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:54,891 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:42:54,891 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:42:54,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 17:42:54,891 INFO L428 AbstractCegarLoop]: === Iteration 9 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:42:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:42:54,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1204049250, now seen corresponding path program 2 times [2021-03-25 17:42:54,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:42:54,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747324520] [2021-03-25 17:42:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:42:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:42:54,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:54,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:54,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:54,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:54,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:54,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:54,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:54,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:42:54,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:42:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:42:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:42:54,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747324520] [2021-03-25 17:42:54,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:42:54,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 17:42:54,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198527363] [2021-03-25 17:42:54,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 17:42:54,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:42:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 17:42:54,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 17:42:54,926 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:42:54,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 367 transitions, 7004 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:54,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:42:54,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:42:54,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:42:56,503 INFO L129 PetriNetUnfolder]: 7203/12466 cut-off events. [2021-03-25 17:42:56,503 INFO L130 PetriNetUnfolder]: For 121237/121237 co-relation queries the response was YES. [2021-03-25 17:42:56,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100934 conditions, 12466 events. 7203/12466 cut-off events. For 121237/121237 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 100620 event pairs, 1888 based on Foata normal form. 66/9754 useless extension candidates. Maximal degree in co-relation 73265. Up to 6426 conditions per place. [2021-03-25 17:42:56,641 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 118 selfloop transitions, 269 changer transitions 0/389 dead transitions. [2021-03-25 17:42:56,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 389 transitions, 7969 flow [2021-03-25 17:42:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 17:42:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 17:42:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2021-03-25 17:42:56,642 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.49732620320855614 [2021-03-25 17:42:56,642 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 186 transitions. [2021-03-25 17:42:56,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 186 transitions. [2021-03-25 17:42:56,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:42:56,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 186 transitions. [2021-03-25 17:42:56,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 16.90909090909091) internal successors, (186), 11 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:56,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 34.0) internal successors, (408), 12 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:56,644 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 34.0) internal successors, (408), 12 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:42:56,644 INFO L185 Difference]: Start difference. First operand has 96 places, 367 transitions, 7004 flow. Second operand 11 states and 186 transitions. [2021-03-25 17:42:56,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 389 transitions, 7969 flow [2021-03-25 17:42:57,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 389 transitions, 7734 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 17:42:57,037 INFO L241 Difference]: Finished difference. Result has 107 places, 368 transitions, 7504 flow [2021-03-25 17:42:57,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6770, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7504, PETRI_PLACES=107, PETRI_TRANSITIONS=368} [2021-03-25 17:42:57,037 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2021-03-25 17:42:57,037 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:42:57,038 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 368 transitions, 7504 flow [2021-03-25 17:42:57,038 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 368 transitions, 7504 flow [2021-03-25 17:42:57,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 368 transitions, 7504 flow [2021-03-25 17:42:57,571 INFO L129 PetriNetUnfolder]: 2539/5672 cut-off events. [2021-03-25 17:42:57,572 INFO L130 PetriNetUnfolder]: For 46496/47004 co-relation queries the response was YES. [2021-03-25 17:42:57,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48219 conditions, 5672 events. 2539/5672 cut-off events. For 46496/47004 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 56282 event pairs, 227 based on Foata normal form. 91/4181 useless extension candidates. Maximal degree in co-relation 40901. Up to 2179 conditions per place. [2021-03-25 17:42:57,631 INFO L142 LiptonReduction]: Number of co-enabled transitions 2016 [2021-03-25 17:43:10,343 INFO L154 LiptonReduction]: Checked pairs total: 9862 [2021-03-25 17:43:10,343 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:43:10,343 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13306 [2021-03-25 17:43:10,344 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 368 transitions, 7504 flow [2021-03-25 17:43:10,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:43:10,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:43:10,344 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:43:10,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 17:43:10,344 INFO L428 AbstractCegarLoop]: === Iteration 10 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:43:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:43:10,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2066053174, now seen corresponding path program 1 times [2021-03-25 17:43:10,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:43:10,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964017963] [2021-03-25 17:43:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:43:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:43:10,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:43:10,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:43:10,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:43:10,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:43:10,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:43:10,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:43:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 17:43:10,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964017963] [2021-03-25 17:43:10,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837828221] [2021-03-25 17:43:10,379 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 [2021-03-25 17:43:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:43:10,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-03-25 17:43:10,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 17:43:10,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 17:43:10,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 17:43:10,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 17:43:10,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:43:10,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 17:43:10,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:43:10,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:43:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:43:10,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 17:43:10,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-03-25 17:43:10,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272123882] [2021-03-25 17:43:10,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 17:43:10,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:43:10,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 17:43:10,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-03-25 17:43:10,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2021-03-25 17:43:10,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 368 transitions, 7504 flow. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:43:10,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:43:10,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2021-03-25 17:43:10,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:43:12,451 INFO L129 PetriNetUnfolder]: 6968/13181 cut-off events. [2021-03-25 17:43:12,451 INFO L130 PetriNetUnfolder]: For 162359/162359 co-relation queries the response was YES. [2021-03-25 17:43:12,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109853 conditions, 13181 events. 6968/13181 cut-off events. For 162359/162359 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 119392 event pairs, 567 based on Foata normal form. 732/11099 useless extension candidates. Maximal degree in co-relation 92847. Up to 4367 conditions per place. [2021-03-25 17:43:12,577 INFO L132 encePairwiseOnDemand]: 22/34 looper letters, 68 selfloop transitions, 389 changer transitions 0/459 dead transitions. [2021-03-25 17:43:12,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 459 transitions, 9780 flow [2021-03-25 17:43:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-25 17:43:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-25 17:43:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 222 transitions. [2021-03-25 17:43:12,578 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38408304498269896 [2021-03-25 17:43:12,578 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 222 transitions. [2021-03-25 17:43:12,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 222 transitions. [2021-03-25 17:43:12,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:43:12,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 222 transitions. [2021-03-25 17:43:12,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 13.058823529411764) internal successors, (222), 17 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:43:12,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 34.0) internal successors, (612), 18 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:43:12,580 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 34.0) internal successors, (612), 18 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:43:12,580 INFO L185 Difference]: Start difference. First operand has 107 places, 368 transitions, 7504 flow. Second operand 17 states and 222 transitions. [2021-03-25 17:43:12,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 459 transitions, 9780 flow [2021-03-25 17:43:13,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 459 transitions, 9329 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-25 17:43:13,228 INFO L241 Difference]: Finished difference. Result has 121 places, 417 transitions, 9192 flow [2021-03-25 17:43:13,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9192, PETRI_PLACES=121, PETRI_TRANSITIONS=417} [2021-03-25 17:43:13,228 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2021-03-25 17:43:13,228 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:43:13,228 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 417 transitions, 9192 flow [2021-03-25 17:43:13,228 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 417 transitions, 9192 flow [2021-03-25 17:43:13,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 417 transitions, 9192 flow [2021-03-25 17:43:13,859 INFO L129 PetriNetUnfolder]: 2658/6374 cut-off events. [2021-03-25 17:43:13,859 INFO L130 PetriNetUnfolder]: For 61508/61972 co-relation queries the response was YES. [2021-03-25 17:43:13,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58517 conditions, 6374 events. 2658/6374 cut-off events. For 61508/61972 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 68637 event pairs, 223 based on Foata normal form. 130/4815 useless extension candidates. Maximal degree in co-relation 50455. Up to 2525 conditions per place. [2021-03-25 17:43:13,949 INFO L142 LiptonReduction]: Number of co-enabled transitions 2190 [2021-03-25 17:43:49,366 INFO L154 LiptonReduction]: Checked pairs total: 22155 [2021-03-25 17:43:49,366 INFO L156 LiptonReduction]: Total number of compositions: 24 [2021-03-25 17:43:49,366 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36138 [2021-03-25 17:43:49,367 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 408 transitions, 9211 flow [2021-03-25 17:43:49,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:43:49,367 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:43:49,367 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:43:49,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 17:43:49,570 INFO L428 AbstractCegarLoop]: === Iteration 11 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:43:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:43:49,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1952499134, now seen corresponding path program 1 times [2021-03-25 17:43:49,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:43:49,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832275135] [2021-03-25 17:43:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:43:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:43:49,575 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:43:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:43:49,578 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:43:49,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:43:49,579 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:43:49,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 17:43:49,596 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:43:49 BasicIcfg [2021-03-25 17:43:49,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:43:49,597 INFO L168 Benchmark]: Toolchain (without parser) took 98585.82 ms. Allocated memory was 341.8 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 322.3 MB in the beginning and 1.1 GB in the end (delta: -814.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. [2021-03-25 17:43:49,597 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 341.8 MB. Free memory was 323.3 MB in the beginning and 323.2 MB in the end (delta: 75.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:43:49,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.84 ms. Allocated memory is still 341.8 MB. Free memory was 322.2 MB in the beginning and 320.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:43:49,597 INFO L168 Benchmark]: Boogie Preprocessor took 14.32 ms. Allocated memory is still 341.8 MB. Free memory was 320.7 MB in the beginning and 319.8 MB in the end (delta: 906.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:43:49,597 INFO L168 Benchmark]: RCFGBuilder took 184.00 ms. Allocated memory is still 341.8 MB. Free memory was 319.8 MB in the beginning and 311.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:43:49,598 INFO L168 Benchmark]: TraceAbstraction took 98356.09 ms. Allocated memory was 341.8 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 310.7 MB in the beginning and 1.1 GB in the end (delta: -826.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. [2021-03-25 17:43:49,598 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 0.13 ms. Allocated memory is still 341.8 MB. Free memory was 323.3 MB in the beginning and 323.2 MB in the end (delta: 75.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.84 ms. Allocated memory is still 341.8 MB. Free memory was 322.2 MB in the beginning and 320.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.32 ms. Allocated memory is still 341.8 MB. Free memory was 320.7 MB in the beginning and 319.8 MB in the end (delta: 906.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 184.00 ms. Allocated memory is still 341.8 MB. Free memory was 319.8 MB in the beginning and 311.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 98356.09 ms. Allocated memory was 341.8 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 310.7 MB in the beginning and 1.1 GB in the end (delta: -826.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 238.1ms, 13 PlacesBefore, 10 PlacesAfterwards, 10 TransitionsBefore, 7 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0ms, 12 PlacesBefore, 11 PlacesAfterwards, 5 TransitionsBefore, 5 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 162.5ms, 20 PlacesBefore, 17 PlacesAfterwards, 15 TransitionsBefore, 12 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 95, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 50, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 50, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 50, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 95, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 50, unknown conditional: 0, unknown unconditional: 50] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.7ms, 22 PlacesBefore, 22 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 20 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 126.8ms, 27 PlacesBefore, 23 PlacesAfterwards, 20 TransitionsBefore, 16 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 293 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 109, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 79, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 79, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 79, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 109, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 79, unknown conditional: 0, unknown unconditional: 79] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.0ms, 28 PlacesBefore, 28 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 47 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 85.1ms, 36 PlacesBefore, 36 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 334 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 175 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 121.9ms, 45 PlacesBefore, 45 PlacesAfterwards, 69 TransitionsBefore, 69 TransitionsAfterwards, 390 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 302 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 160.8ms, 51 PlacesBefore, 51 PlacesAfterwards, 69 TransitionsBefore, 69 TransitionsAfterwards, 344 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 52, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 52, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 163.8ms, 58 PlacesBefore, 58 PlacesAfterwards, 69 TransitionsBefore, 69 TransitionsAfterwards, 316 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 342 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 230.2ms, 34 PlacesBefore, 29 PlacesAfterwards, 25 TransitionsBefore, 20 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 525 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 179, positive: 150, positive conditional: 0, positive unconditional: 150, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 136, positive: 129, positive conditional: 0, positive unconditional: 129, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 136, positive: 129, positive conditional: 0, positive unconditional: 129, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 136, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 75, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 179, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 136, unknown conditional: 0, unknown unconditional: 136] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.4ms, 34 PlacesBefore, 34 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 330 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 105 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 434.5ms, 42 PlacesBefore, 42 PlacesAfterwards, 74 TransitionsBefore, 74 TransitionsAfterwards, 604 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 259 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1146.6ms, 51 PlacesBefore, 51 PlacesAfterwards, 101 TransitionsBefore, 101 TransitionsAfterwards, 844 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 705 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1383.8ms, 57 PlacesBefore, 57 PlacesAfterwards, 139 TransitionsBefore, 139 TransitionsAfterwards, 1152 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 2417 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 37, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1655.2ms, 66 PlacesBefore, 66 PlacesAfterwards, 140 TransitionsBefore, 140 TransitionsAfterwards, 1118 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 1949 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 40, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 40, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4094.9ms, 72 PlacesBefore, 72 PlacesAfterwards, 245 TransitionsBefore, 245 TransitionsAfterwards, 1568 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 6156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9843.6ms, 83 PlacesBefore, 83 PlacesAfterwards, 309 TransitionsBefore, 309 TransitionsAfterwards, 1876 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 8947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 83, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 83, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12645.1ms, 96 PlacesBefore, 96 PlacesAfterwards, 367 TransitionsBefore, 367 TransitionsAfterwards, 2078 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 10584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 96, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 96, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13305.4ms, 107 PlacesBefore, 107 PlacesAfterwards, 368 TransitionsBefore, 368 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 9862 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 94, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 94, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36137.5ms, 121 PlacesBefore, 121 PlacesAfterwards, 417 TransitionsBefore, 408 TransitionsAfterwards, 2190 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 20 ConcurrentYvCompositions, 0 ChoiceCompositions, 24 TotalNumberOfCompositions, 22155 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 292, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 161, negative conditional: 0, negative unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 292, positive: 125, positive conditional: 0, positive unconditional: 125, negative: 159, negative conditional: 0, negative unconditional: 159, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - CounterExampleResult [Line: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L24] 0 x := 0; [L25] 0 i := 0; VAL [i=0, x=0] [L28] FORK 0 fork i thread(i); VAL [i=0, x=0, y=0] [L29] 0 i := i + 1; VAL [i=1, x=0, y=0] [L16] 1 x := x + 1; VAL [i=1, x=1, y=0] [L28] FORK 0 fork i thread(i); VAL [i=1, x=1, y=0] [L29] 0 i := i + 1; VAL [i=2, x=1, y=0] [L16] 2 x := x + 1; VAL [i=2, x=2, y=0] [L28] FORK 0 fork i thread(i); VAL [i=2, x=2, y=0] [L16] 3 x := x + 1; [L17] 3 assert x <= y + 2; [L17] 1 assert x <= y + 2; VAL [i=2, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. Started 4 CEGAR loops. EmptinessCheckTime: 6.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 98192.0ms, OverallIterations: 21, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 14113.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 838.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 484 SDslu, 73 SDs, 0 SdLazy, 2225 SolverSat, 568 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1412.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 729.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9211occurred in iteration=10, InterpolantAutomatonStates: 135, 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: 20.9ms SsaConstructionTime, 129.0ms SatisfiabilityAnalysisTime, 836.0ms InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 530 SizeOfPredicates, 3 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 23/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...