/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 18:12:51,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 18:12:51,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 18:12:51,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 18:12:51,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 18:12:51,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 18:12:51,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 18:12:51,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 18:12:51,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 18:12:51,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 18:12:51,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 18:12:51,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 18:12:51,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 18:12:51,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 18:12:51,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 18:12:51,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 18:12:51,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 18:12:51,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 18:12:51,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 18:12:51,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 18:12:51,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 18:12:51,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 18:12:51,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 18:12:51,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 18:12:51,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 18:12:51,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 18:12:51,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 18:12:51,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 18:12:51,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 18:12:51,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 18:12:51,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 18:12:51,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 18:12:51,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 18:12:51,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 18:12:51,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 18:12:51,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 18:12:51,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 18:12:51,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 18:12:51,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 18:12:51,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 18:12:51,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 18:12:51,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 18:12:51,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 18:12:51,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 18:12:51,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 18:12:51,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 18:12:51,172 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 18:12:51,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 18:12:51,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 18:12:51,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 18:12:51,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 18:12:51,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 18:12:51,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 18:12:51,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 18:12:51,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 18:12:51,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 18:12:51,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 18:12:51,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 18:12:51,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 18:12:51,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 18:12:51,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 18:12:51,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 18:12:51,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 18:12:51,176 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 18:12:51,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 18:12:51,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 18:12:51,177 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 18:12:51,177 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 18:12:51,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 18:12:51,177 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 18:12:51,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 18:12:51,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 18:12:51,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 18:12:51,526 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 18:12:51,527 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 18:12:51,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2021-08-13 18:12:51,529 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2021-08-13 18:12:51,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 18:12:51,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 18:12:51,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 18:12:51,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 18:12:51,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 18:12:51,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 18:12:51,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 18:12:51,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 18:12:51,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 18:12:51,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... [2021-08-13 18:12:51,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 18:12:51,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 18:12:51,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 18:12:51,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 18:12:51,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 18:12:51,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 18:12:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 18:12:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 18:12:51,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 18:12:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 18:12:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 18:12:51,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 18:12:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 18:12:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 18:12:51,672 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 18:12:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 18:12:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 18:12:51,672 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 18:12:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 18:12:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 18:12:51,674 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 18:12:51,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 18:12:51,823 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 18:12:51,824 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:12:51 BoogieIcfgContainer [2021-08-13 18:12:51,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 18:12:51,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 18:12:51,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 18:12:51,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 18:12:51,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:12:51" (1/2) ... [2021-08-13 18:12:51,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c354b52 and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:12:51, skipping insertion in model container [2021-08-13 18:12:51,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:12:51" (2/2) ... [2021-08-13 18:12:51,830 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2021-08-13 18:12:51,833 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 18:12:51,834 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 18:12:51,835 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 18:12:51,873 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 18:12:51,894 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 18:12:51,915 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 18:12:51,915 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 18:12:51,915 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 18:12:51,915 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 18:12:51,915 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 18:12:51,916 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 18:12:51,916 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 18:12:51,916 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 18:12:51,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 122 flow [2021-08-13 18:12:51,953 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2021-08-13 18:12:51,953 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 18:12:51,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 4/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2021-08-13 18:12:51,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 122 flow [2021-08-13 18:12:51,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 102 flow [2021-08-13 18:12:51,972 INFO L129 PetriNetUnfolder]: 4/38 cut-off events. [2021-08-13 18:12:51,972 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 18:12:51,973 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:51,973 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:51,974 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:51,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:51,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1191194427, now seen corresponding path program 1 times [2021-08-13 18:12:51,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:51,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743968567] [2021-08-13 18:12:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:52,139 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 18:12:52,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:12:52,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:52,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:52,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:52,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743968567] [2021-08-13 18:12:52,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743968567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:12:52,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:12:52,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 18:12:52,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171930548] [2021-08-13 18:12:52,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 18:12:52,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:52,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 18:12:52,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 18:12:52,197 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:12:52,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:52,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:52,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:12:52,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:12:52,411 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 26#L18true, 58#true, 45#L66true, 15#L40true, 47#thread4FINALtrue]) [2021-08-13 18:12:52,411 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,411 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,411 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,412 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,412 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 26#L18true, 58#true, 45#L66true, 15#L40true, 31#L52true]) [2021-08-13 18:12:52,412 INFO L384 tUnfolder$Statistics]: this new event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,413 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,413 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,413 INFO L387 tUnfolder$Statistics]: existing Event has 11 ancestors and is cut-off event [2021-08-13 18:12:52,441 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 10#L19true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 18:12:52,441 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 10#L19true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 18:12:52,442 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,442 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,448 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 9#thread1FINALtrue, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 18:12:52,448 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,448 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,448 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,449 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,449 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 9#thread1FINALtrue, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 18:12:52,449 INFO L384 tUnfolder$Statistics]: this new event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,449 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,449 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,449 INFO L387 tUnfolder$Statistics]: existing Event has 12 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 36#L20true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 18:12:52,488 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 36#L20true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 18:12:52,488 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-08-13 18:12:52,488 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 18:12:52,532 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [18#L29true, 51#true, 53#true, 55#true, 57#true, 41#L21true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 18:12:52,532 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-08-13 18:12:52,533 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 18:12:52,533 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 18:12:52,533 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 18:12:52,533 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [18#L29true, 51#true, 53#true, 55#true, 57#true, 41#L21true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 18:12:52,534 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-08-13 18:12:52,534 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 18:12:52,534 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 18:12:52,534 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-08-13 18:12:52,617 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([116] L51-->thread4FINAL: Formula: (not (< v_x4_7 v_n_7)) InVars {x4=v_x4_7, n=v_n_7} OutVars{x4=v_x4_7, n=v_n_7} AuxVars[] AssignedVars[][24], [17#L22true, 18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 47#thread4FINALtrue, 15#L40true]) [2021-08-13 18:12:52,618 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-08-13 18:12:52,618 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 18:12:52,618 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-08-13 18:12:52,618 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 18:12:52,618 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([115] L51-->L52: Formula: (< v_x4_8 v_n_8) InVars {x4=v_x4_8, n=v_n_8} OutVars{x4=v_x4_8, n=v_n_8} AuxVars[] AssignedVars[][25], [17#L22true, 18#L29true, 51#true, 53#true, 55#true, 57#true, 58#true, 45#L66true, 31#L52true, 15#L40true]) [2021-08-13 18:12:52,618 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-08-13 18:12:52,618 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 18:12:52,618 INFO L387 tUnfolder$Statistics]: existing Event has 10 ancestors and is cut-off event [2021-08-13 18:12:52,619 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-08-13 18:12:52,749 INFO L129 PetriNetUnfolder]: 5212/7020 cut-off events. [2021-08-13 18:12:52,749 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-08-13 18:12:52,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13938 conditions, 7020 events. 5212/7020 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 32472 event pairs, 1884 based on Foata normal form. 1/5609 useless extension candidates. Maximal degree in co-relation 13911. Up to 6632 conditions per place. [2021-08-13 18:12:52,797 INFO L132 encePairwiseOnDemand]: 39/45 looper letters, 33 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2021-08-13 18:12:52,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 202 flow [2021-08-13 18:12:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 18:12:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 18:12:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2021-08-13 18:12:52,808 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2021-08-13 18:12:52,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2021-08-13 18:12:52,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2021-08-13 18:12:52,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:12:52,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2021-08-13 18:12:52,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:52,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:52,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:52,827 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2021-08-13 18:12:52,827 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 202 flow [2021-08-13 18:12:52,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:52,828 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:52,828 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:52,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 18:12:52,828 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1608113992, now seen corresponding path program 1 times [2021-08-13 18:12:52,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:52,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288859270] [2021-08-13 18:12:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:52,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:52,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:52,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:52,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:52,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:52,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:52,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:52,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288859270] [2021-08-13 18:12:52,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288859270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:12:52,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:12:52,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:12:52,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147537103] [2021-08-13 18:12:52,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:12:52,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:52,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:12:52,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:12:52,889 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:12:52,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:52,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:52,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:12:52,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:12:53,577 INFO L129 PetriNetUnfolder]: 7703/10664 cut-off events. [2021-08-13 18:12:53,577 INFO L130 PetriNetUnfolder]: For 3317/3447 co-relation queries the response was YES. [2021-08-13 18:12:53,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28241 conditions, 10664 events. 7703/10664 cut-off events. For 3317/3447 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 55250 event pairs, 2425 based on Foata normal form. 4/8566 useless extension candidates. Maximal degree in co-relation 28199. Up to 10023 conditions per place. [2021-08-13 18:12:53,694 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 53 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2021-08-13 18:12:53,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 480 flow [2021-08-13 18:12:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:12:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:12:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2021-08-13 18:12:53,697 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 18:12:53,697 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2021-08-13 18:12:53,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2021-08-13 18:12:53,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:12:53,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2021-08-13 18:12:53,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:53,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:53,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:53,703 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 6 predicate places. [2021-08-13 18:12:53,703 INFO L482 AbstractCegarLoop]: Abstraction has has 54 places, 88 transitions, 480 flow [2021-08-13 18:12:53,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:53,703 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:53,703 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:53,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 18:12:53,704 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash 375731404, now seen corresponding path program 2 times [2021-08-13 18:12:53,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:53,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046548487] [2021-08-13 18:12:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:53,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:53,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:53,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:53,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:53,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:53,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:53,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:53,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046548487] [2021-08-13 18:12:53,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046548487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:12:53,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:12:53,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:12:53,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470793338] [2021-08-13 18:12:53,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:12:53,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:53,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:12:53,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:12:53,739 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:12:53,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 88 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:53,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:53,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:12:53,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:12:54,306 INFO L129 PetriNetUnfolder]: 7075/9753 cut-off events. [2021-08-13 18:12:54,307 INFO L130 PetriNetUnfolder]: For 9262/9538 co-relation queries the response was YES. [2021-08-13 18:12:54,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32475 conditions, 9753 events. 7075/9753 cut-off events. For 9262/9538 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49166 event pairs, 2164 based on Foata normal form. 13/7892 useless extension candidates. Maximal degree in co-relation 32435. Up to 9148 conditions per place. [2021-08-13 18:12:54,371 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 90 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2021-08-13 18:12:54,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 954 flow [2021-08-13 18:12:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:12:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:12:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 18:12:54,375 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 18:12:54,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 18:12:54,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 18:12:54,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:12:54,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 18:12:54,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:54,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:54,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:54,379 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2021-08-13 18:12:54,379 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 131 transitions, 954 flow [2021-08-13 18:12:54,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:54,379 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:54,379 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:54,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 18:12:54,379 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 815941149, now seen corresponding path program 1 times [2021-08-13 18:12:54,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:54,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083295620] [2021-08-13 18:12:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:54,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:54,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:54,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:54,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:54,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:54,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:54,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:54,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083295620] [2021-08-13 18:12:54,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083295620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:12:54,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:12:54,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:12:54,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670706880] [2021-08-13 18:12:54,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:12:54,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:54,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:12:54,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:12:54,431 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:12:54,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 131 transitions, 954 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:54,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:54,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:12:54,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:12:55,038 INFO L129 PetriNetUnfolder]: 7208/9938 cut-off events. [2021-08-13 18:12:55,038 INFO L130 PetriNetUnfolder]: For 18981/19887 co-relation queries the response was YES. [2021-08-13 18:12:55,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39852 conditions, 9938 events. 7208/9938 cut-off events. For 18981/19887 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50342 event pairs, 1980 based on Foata normal form. 32/8105 useless extension candidates. Maximal degree in co-relation 39808. Up to 9375 conditions per place. [2021-08-13 18:12:55,109 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 113 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2021-08-13 18:12:55,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 153 transitions, 1390 flow [2021-08-13 18:12:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:12:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:12:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 18:12:55,112 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 18:12:55,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 18:12:55,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 18:12:55,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:12:55,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 18:12:55,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:55,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:55,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:55,114 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2021-08-13 18:12:55,114 INFO L482 AbstractCegarLoop]: Abstraction has has 62 places, 153 transitions, 1390 flow [2021-08-13 18:12:55,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:55,114 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:55,114 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:55,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 18:12:55,115 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1360935607, now seen corresponding path program 1 times [2021-08-13 18:12:55,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:55,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918106177] [2021-08-13 18:12:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:55,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:55,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:55,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:55,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:55,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:55,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:55,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:55,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918106177] [2021-08-13 18:12:55,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918106177] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:12:55,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:12:55,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:12:55,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409431695] [2021-08-13 18:12:55,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:12:55,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:55,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:12:55,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:12:55,156 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:12:55,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 153 transitions, 1390 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:55,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:55,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:12:55,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:12:56,004 INFO L129 PetriNetUnfolder]: 8134/11286 cut-off events. [2021-08-13 18:12:56,005 INFO L130 PetriNetUnfolder]: For 22731/23785 co-relation queries the response was YES. [2021-08-13 18:12:56,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53312 conditions, 11286 events. 8134/11286 cut-off events. For 22731/23785 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60053 event pairs, 1365 based on Foata normal form. 20/9208 useless extension candidates. Maximal degree in co-relation 53255. Up to 10679 conditions per place. [2021-08-13 18:12:56,150 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 223 selfloop transitions, 61 changer transitions 2/328 dead transitions. [2021-08-13 18:12:56,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 328 transitions, 3652 flow [2021-08-13 18:12:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:12:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:12:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2021-08-13 18:12:56,151 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2021-08-13 18:12:56,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 179 transitions. [2021-08-13 18:12:56,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 179 transitions. [2021-08-13 18:12:56,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:12:56,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 179 transitions. [2021-08-13 18:12:56,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:56,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:56,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:56,153 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2021-08-13 18:12:56,153 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 328 transitions, 3652 flow [2021-08-13 18:12:56,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:56,153 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:56,154 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:56,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 18:12:56,154 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:56,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:56,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2135301104, now seen corresponding path program 1 times [2021-08-13 18:12:56,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:56,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971210416] [2021-08-13 18:12:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:56,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:56,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:56,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971210416] [2021-08-13 18:12:56,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971210416] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 18:12:56,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706470185] [2021-08-13 18:12:56,197 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 [2021-08-13 18:12:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:56,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-13 18:12:56,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 18:12:56,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:12:56,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 18:12:56,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:12:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-13 18:12:56,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:56,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:12:56,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-08-13 18:12:56,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:56,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:56,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706470185] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 18:12:56,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 18:12:56,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-13 18:12:56,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419543204] [2021-08-13 18:12:56,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:12:56,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:56,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:12:56,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:12:56,382 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:12:56,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 328 transitions, 3652 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:56,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:56,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:12:56,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:12:58,010 INFO L129 PetriNetUnfolder]: 8557/12458 cut-off events. [2021-08-13 18:12:58,011 INFO L130 PetriNetUnfolder]: For 23056/24809 co-relation queries the response was YES. [2021-08-13 18:12:58,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65416 conditions, 12458 events. 8557/12458 cut-off events. For 23056/24809 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 71872 event pairs, 1428 based on Foata normal form. 31/10583 useless extension candidates. Maximal degree in co-relation 65334. Up to 11528 conditions per place. [2021-08-13 18:12:58,137 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 482 selfloop transitions, 89 changer transitions 3/616 dead transitions. [2021-08-13 18:12:58,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 616 transitions, 8196 flow [2021-08-13 18:12:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:12:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:12:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2021-08-13 18:12:58,138 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 18:12:58,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2021-08-13 18:12:58,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2021-08-13 18:12:58,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:12:58,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2021-08-13 18:12:58,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:58,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:58,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:58,140 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2021-08-13 18:12:58,140 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 616 transitions, 8196 flow [2021-08-13 18:12:58,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:58,140 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:12:58,140 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:12:58,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-13 18:12:58,363 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:12:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:12:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash -875771450, now seen corresponding path program 2 times [2021-08-13 18:12:58,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:12:58,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950991566] [2021-08-13 18:12:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:12:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:12:58,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:58,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:58,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:58,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:12:58,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:12:58,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:12:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:12:58,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:12:58,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950991566] [2021-08-13 18:12:58,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950991566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:12:58,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:12:58,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:12:58,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524007780] [2021-08-13 18:12:58,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:12:58,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:12:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:12:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:12:58,473 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:12:58,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 616 transitions, 8196 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:12:58,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:12:58,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:12:58,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:00,021 INFO L129 PetriNetUnfolder]: 7898/11522 cut-off events. [2021-08-13 18:13:00,021 INFO L130 PetriNetUnfolder]: For 21760/24940 co-relation queries the response was YES. [2021-08-13 18:13:00,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67512 conditions, 11522 events. 7898/11522 cut-off events. For 21760/24940 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 66185 event pairs, 999 based on Foata normal form. 47/9866 useless extension candidates. Maximal degree in co-relation 67445. Up to 10566 conditions per place. [2021-08-13 18:13:00,127 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 460 selfloop transitions, 111 changer transitions 8/621 dead transitions. [2021-08-13 18:13:00,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 621 transitions, 9430 flow [2021-08-13 18:13:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:13:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:13:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2021-08-13 18:13:00,129 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-08-13 18:13:00,129 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 177 transitions. [2021-08-13 18:13:00,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 177 transitions. [2021-08-13 18:13:00,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:00,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 177 transitions. [2021-08-13 18:13:00,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:00,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:00,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:00,131 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2021-08-13 18:13:00,131 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 621 transitions, 9430 flow [2021-08-13 18:13:00,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:00,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:00,131 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:00,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 18:13:00,131 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:00,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1538529383, now seen corresponding path program 2 times [2021-08-13 18:13:00,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:00,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812581010] [2021-08-13 18:13:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:00,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:00,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:13:00,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:00,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:13:00,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:00,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:13:00,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:00,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812581010] [2021-08-13 18:13:00,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812581010] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:00,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:00,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:13:00,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022808796] [2021-08-13 18:13:00,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:13:00,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:00,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:13:00,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:13:00,153 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:13:00,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 621 transitions, 9430 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:00,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:00,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:13:00,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:01,858 INFO L129 PetriNetUnfolder]: 8769/12632 cut-off events. [2021-08-13 18:13:01,858 INFO L130 PetriNetUnfolder]: For 29271/31838 co-relation queries the response was YES. [2021-08-13 18:13:01,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83572 conditions, 12632 events. 8769/12632 cut-off events. For 29271/31838 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 69838 event pairs, 1044 based on Foata normal form. 6/10839 useless extension candidates. Maximal degree in co-relation 83500. Up to 11772 conditions per place. [2021-08-13 18:13:01,953 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 614 selfloop transitions, 88 changer transitions 8/752 dead transitions. [2021-08-13 18:13:01,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 752 transitions, 12928 flow [2021-08-13 18:13:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:13:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:13:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 18:13:01,955 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 18:13:01,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 18:13:01,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 18:13:01,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:01,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 18:13:01,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:01,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:01,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:01,956 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2021-08-13 18:13:01,956 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 752 transitions, 12928 flow [2021-08-13 18:13:01,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:01,956 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:01,957 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:01,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 18:13:01,957 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:01,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:01,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1585811695, now seen corresponding path program 2 times [2021-08-13 18:13:01,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:01,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731571700] [2021-08-13 18:13:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:01,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:01,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 18:13:01,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:01,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 18:13:01,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:01,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:13:01,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:01,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731571700] [2021-08-13 18:13:01,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731571700] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:01,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:01,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:13:01,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622810339] [2021-08-13 18:13:01,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 18:13:01,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:01,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 18:13:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 18:13:01,987 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 18:13:01,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 752 transitions, 12928 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:01,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:01,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 18:13:01,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:03,821 INFO L129 PetriNetUnfolder]: 9736/14036 cut-off events. [2021-08-13 18:13:03,822 INFO L130 PetriNetUnfolder]: For 51822/55308 co-relation queries the response was YES. [2021-08-13 18:13:03,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102926 conditions, 14036 events. 9736/14036 cut-off events. For 51822/55308 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 78669 event pairs, 1172 based on Foata normal form. 51/12192 useless extension candidates. Maximal degree in co-relation 102849. Up to 13108 conditions per place. [2021-08-13 18:13:03,946 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 754 selfloop transitions, 106 changer transitions 8/913 dead transitions. [2021-08-13 18:13:03,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 913 transitions, 17538 flow [2021-08-13 18:13:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 18:13:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 18:13:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2021-08-13 18:13:03,948 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-08-13 18:13:03,948 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2021-08-13 18:13:03,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2021-08-13 18:13:03,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:03,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2021-08-13 18:13:03,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:03,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:03,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:03,950 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2021-08-13 18:13:03,950 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 913 transitions, 17538 flow [2021-08-13 18:13:03,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:03,950 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:03,950 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:03,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 18:13:03,951 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:03,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:03,951 INFO L82 PathProgramCache]: Analyzing trace with hash -466782790, now seen corresponding path program 1 times [2021-08-13 18:13:03,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:03,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813862775] [2021-08-13 18:13:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:03,980 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:03,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:03,987 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:03,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:03,995 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:03,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:04,004 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:04,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:04,013 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:04,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:04,024 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:04,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:04,025 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:04,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:04,027 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:04,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:04,029 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:13:04,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:13:04,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:04,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:13:04,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:04,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813862775] [2021-08-13 18:13:04,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813862775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:04,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:04,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:13:04,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354546883] [2021-08-13 18:13:04,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:13:04,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:04,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:13:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:13:04,034 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:13:04,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 913 transitions, 17538 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:04,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:04,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:13:04,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:07,171 INFO L129 PetriNetUnfolder]: 10822/16116 cut-off events. [2021-08-13 18:13:07,172 INFO L130 PetriNetUnfolder]: For 49382/50409 co-relation queries the response was YES. [2021-08-13 18:13:07,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130527 conditions, 16116 events. 10822/16116 cut-off events. For 49382/50409 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 98791 event pairs, 892 based on Foata normal form. 29/14000 useless extension candidates. Maximal degree in co-relation 130429. Up to 14608 conditions per place. [2021-08-13 18:13:07,297 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 1312 selfloop transitions, 80 changer transitions 14/1419 dead transitions. [2021-08-13 18:13:07,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1419 transitions, 29870 flow [2021-08-13 18:13:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:13:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:13:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 18:13:07,298 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 18:13:07,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 18:13:07,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 18:13:07,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:07,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 18:13:07,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:07,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:07,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:07,300 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2021-08-13 18:13:07,300 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 1419 transitions, 29870 flow [2021-08-13 18:13:07,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:07,300 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:07,300 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:07,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 18:13:07,300 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:07,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:07,300 INFO L82 PathProgramCache]: Analyzing trace with hash -779885262, now seen corresponding path program 1 times [2021-08-13 18:13:07,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:07,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238543879] [2021-08-13 18:13:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:07,321 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:07,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:07,327 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,335 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,343 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,352 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,362 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,363 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,365 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:07,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:07,367 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:13:07,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:13:07,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:07,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:13:07,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:07,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238543879] [2021-08-13 18:13:07,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238543879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:07,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:07,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:13:07,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903984011] [2021-08-13 18:13:07,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:13:07,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:13:07,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:13:07,381 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:13:07,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1419 transitions, 29870 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:07,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:07,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:13:07,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:11,827 INFO L129 PetriNetUnfolder]: 11908/17705 cut-off events. [2021-08-13 18:13:11,827 INFO L130 PetriNetUnfolder]: For 53912/55402 co-relation queries the response was YES. [2021-08-13 18:13:11,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160460 conditions, 17705 events. 11908/17705 cut-off events. For 53912/55402 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 109497 event pairs, 904 based on Foata normal form. 36/15344 useless extension candidates. Maximal degree in co-relation 160339. Up to 16108 conditions per place. [2021-08-13 18:13:12,025 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 1812 selfloop transitions, 80 changer transitions 20/1925 dead transitions. [2021-08-13 18:13:12,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1925 transitions, 44226 flow [2021-08-13 18:13:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:13:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:13:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 18:13:12,026 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 18:13:12,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 18:13:12,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 18:13:12,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:12,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 18:13:12,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:12,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:12,028 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:12,028 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2021-08-13 18:13:12,028 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 1925 transitions, 44226 flow [2021-08-13 18:13:12,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:12,028 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:12,028 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:12,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 18:13:12,029 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:12,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1161876054, now seen corresponding path program 2 times [2021-08-13 18:13:12,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:12,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210901156] [2021-08-13 18:13:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:12,050 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:12,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:12,056 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:12,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:12,064 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:12,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:12,073 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:12,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:12,084 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:12,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:12,085 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:12,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:12,086 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:12,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:12,087 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:12,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:12,105 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:13:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:13:12,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:12,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:13:12,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:12,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210901156] [2021-08-13 18:13:12,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210901156] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:12,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:12,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:13:12,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310104839] [2021-08-13 18:13:12,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:13:12,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:12,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:13:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:13:12,110 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:13:12,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1925 transitions, 44226 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:12,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:12,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:13:12,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:20,567 INFO L129 PetriNetUnfolder]: 13495/20032 cut-off events. [2021-08-13 18:13:20,567 INFO L130 PetriNetUnfolder]: For 60743/65228 co-relation queries the response was YES. [2021-08-13 18:13:20,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200688 conditions, 20032 events. 13495/20032 cut-off events. For 60743/65228 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 125844 event pairs, 904 based on Foata normal form. 114/17397 useless extension candidates. Maximal degree in co-relation 200556. Up to 18290 conditions per place. [2021-08-13 18:13:20,764 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 2490 selfloop transitions, 135 changer transitions 32/2670 dead transitions. [2021-08-13 18:13:20,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 2670 transitions, 66380 flow [2021-08-13 18:13:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:13:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:13:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 18:13:20,765 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 18:13:20,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 18:13:20,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 18:13:20,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:20,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 18:13:20,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:20,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:20,766 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:20,767 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2021-08-13 18:13:20,767 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 2670 transitions, 66380 flow [2021-08-13 18:13:20,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:20,767 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:20,767 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:20,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 18:13:20,767 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2017671836, now seen corresponding path program 2 times [2021-08-13 18:13:20,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:20,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056785574] [2021-08-13 18:13:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:20,813 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:20,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:20,819 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:20,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:20,827 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:20,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:20,836 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:20,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:20,846 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:20,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:20,847 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:20,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:20,848 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:20,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:20,849 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:20,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:20,860 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:13:20,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:13:20,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:20,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:13:20,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:20,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056785574] [2021-08-13 18:13:20,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056785574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:20,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:20,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:13:20,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060970828] [2021-08-13 18:13:20,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:13:20,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:20,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:13:20,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:13:20,867 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:13:20,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 2670 transitions, 66380 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:20,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:20,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:13:20,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:13:37,526 INFO L129 PetriNetUnfolder]: 15082/22471 cut-off events. [2021-08-13 18:13:37,526 INFO L130 PetriNetUnfolder]: For 66950/68747 co-relation queries the response was YES. [2021-08-13 18:13:37,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245484 conditions, 22471 events. 15082/22471 cut-off events. For 66950/68747 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 147225 event pairs, 774 based on Foata normal form. 56/19427 useless extension candidates. Maximal degree in co-relation 245341. Up to 20472 conditions per place. [2021-08-13 18:13:37,734 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 3223 selfloop transitions, 135 changer transitions 44/3415 dead transitions. [2021-08-13 18:13:37,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 3415 transitions, 91514 flow [2021-08-13 18:13:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:13:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:13:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 18:13:37,735 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 18:13:37,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 18:13:37,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 18:13:37,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:13:37,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 18:13:37,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:37,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:37,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:37,737 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2021-08-13 18:13:37,737 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 3415 transitions, 91514 flow [2021-08-13 18:13:37,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:37,737 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:13:37,737 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:13:37,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 18:13:37,737 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:13:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:13:37,738 INFO L82 PathProgramCache]: Analyzing trace with hash 443512840, now seen corresponding path program 3 times [2021-08-13 18:13:37,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:13:37,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182600620] [2021-08-13 18:13:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:13:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:13:37,775 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:37,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:37,783 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:37,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:37,790 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:37,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:37,801 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:37,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:37,802 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:13:37,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:13:37,803 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:37,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:37,811 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:37,824 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:13:37,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:13:37,826 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:13:37,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:13:37,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:13:37,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:13:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:13:37,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:13:37,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182600620] [2021-08-13 18:13:37,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182600620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:13:37,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:13:37,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:13:37,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311915395] [2021-08-13 18:13:37,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:13:37,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:13:37,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:13:37,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:13:37,831 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:13:37,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 3415 transitions, 91514 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:13:37,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:13:37,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:13:37,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:14:11,823 INFO L129 PetriNetUnfolder]: 17225/25626 cut-off events. [2021-08-13 18:14:11,823 INFO L130 PetriNetUnfolder]: For 76782/85432 co-relation queries the response was YES. [2021-08-13 18:14:11,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304452 conditions, 25626 events. 17225/25626 cut-off events. For 76782/85432 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 170081 event pairs, 774 based on Foata normal form. 138/22182 useless extension candidates. Maximal degree in co-relation 304296. Up to 23420 conditions per place. [2021-08-13 18:14:12,096 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 4178 selfloop transitions, 179 changer transitions 62/4432 dead transitions. [2021-08-13 18:14:12,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 4432 transitions, 127436 flow [2021-08-13 18:14:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:14:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:14:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 18:14:12,097 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 18:14:12,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 18:14:12,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 18:14:12,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:14:12,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 18:14:12,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:14:12,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:14:12,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:14:12,099 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 64 predicate places. [2021-08-13 18:14:12,099 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 4432 transitions, 127436 flow [2021-08-13 18:14:12,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:14:12,099 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:14:12,099 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:14:12,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 18:14:12,099 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:14:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:14:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1363035022, now seen corresponding path program 4 times [2021-08-13 18:14:12,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:14:12,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596006860] [2021-08-13 18:14:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:14:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:14:12,141 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:14:12,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:14:12,147 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:14:12,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:14:12,154 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:14:12,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:14:12,157 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:14:12,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:14:12,164 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:14:12,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:14:12,172 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:14:12,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:14:12,181 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:14:12,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:14:12,183 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:14:12,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:14:12,184 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:14:12,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:14:12,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:14:12,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:14:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:14:12,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:14:12,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596006860] [2021-08-13 18:14:12,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596006860] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:14:12,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:14:12,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:14:12,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479687256] [2021-08-13 18:14:12,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:14:12,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:14:12,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:14:12,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:14:12,188 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:14:12,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 4432 transitions, 127436 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:14:12,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:14:12,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:14:12,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:15:23,368 INFO L129 PetriNetUnfolder]: 19772/29412 cut-off events. [2021-08-13 18:15:23,369 INFO L130 PetriNetUnfolder]: For 83706/85949 co-relation queries the response was YES. [2021-08-13 18:15:23,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377234 conditions, 29412 events. 19772/29412 cut-off events. For 83706/85949 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 199352 event pairs, 774 based on Foata normal form. 44/25292 useless extension candidates. Maximal degree in co-relation 377063. Up to 26926 conditions per place. [2021-08-13 18:15:23,671 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 5347 selfloop transitions, 209 changer transitions 86/5655 dead transitions. [2021-08-13 18:15:23,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 5655 transitions, 173778 flow [2021-08-13 18:15:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:15:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:15:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2021-08-13 18:15:23,672 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-08-13 18:15:23,672 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2021-08-13 18:15:23,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2021-08-13 18:15:23,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:15:23,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2021-08-13 18:15:23,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:15:23,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:15:23,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:15:23,673 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 70 predicate places. [2021-08-13 18:15:23,674 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 5655 transitions, 173778 flow [2021-08-13 18:15:23,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:15:23,674 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:15:23,674 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:15:23,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 18:15:23,674 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:15:23,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:15:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash 286299708, now seen corresponding path program 5 times [2021-08-13 18:15:23,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:15:23,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997662600] [2021-08-13 18:15:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:15:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:15:23,690 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:15:23,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:15:23,696 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,702 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,709 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,717 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,726 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,727 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,728 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:15:23,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:15:23,729 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:15:23,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:15:23,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:15:23,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:15:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:15:23,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:15:23,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997662600] [2021-08-13 18:15:23,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997662600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:15:23,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:15:23,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:15:23,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132036435] [2021-08-13 18:15:23,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:15:23,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:15:23,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:15:23,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:15:23,733 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:15:23,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 5655 transitions, 173778 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:15:23,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:15:23,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:15:23,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:17:51,079 INFO L129 PetriNetUnfolder]: 22469/33413 cut-off events. [2021-08-13 18:17:51,080 INFO L130 PetriNetUnfolder]: For 96450/104419 co-relation queries the response was YES. [2021-08-13 18:17:51,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460443 conditions, 33413 events. 22469/33413 cut-off events. For 96450/104419 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 229746 event pairs, 774 based on Foata normal form. 138/28752 useless extension candidates. Maximal degree in co-relation 460237. Up to 30646 conditions per place. [2021-08-13 18:17:51,494 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 6633 selfloop transitions, 212 changer transitions 110/6968 dead transitions. [2021-08-13 18:17:51,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 6968 transitions, 228048 flow [2021-08-13 18:17:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:17:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:17:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-08-13 18:17:51,495 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7746031746031746 [2021-08-13 18:17:51,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-08-13 18:17:51,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-08-13 18:17:51,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:17:51,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-08-13 18:17:51,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:17:51,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:17:51,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:17:51,496 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 76 predicate places. [2021-08-13 18:17:51,496 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 6968 transitions, 228048 flow [2021-08-13 18:17:51,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:17:51,497 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:17:51,497 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:17:51,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 18:17:51,497 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:17:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:17:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash 960725144, now seen corresponding path program 3 times [2021-08-13 18:17:51,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:17:51,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903952253] [2021-08-13 18:17:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:17:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:17:51,512 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:17:51,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:17:51,518 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:17:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:17:51,524 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:17:51,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:17:51,532 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:17:51,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:17:51,533 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 18:17:51,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 18:17:51,533 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:17:51,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:17:51,542 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:17:51,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:17:51,551 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 18:17:51,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 18:17:51,552 INFO L142 QuantifierPusher]: treesize reduction 15, result has 44.4 percent of original size [2021-08-13 18:17:51,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 18:17:51,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:17:51,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:17:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 18:17:51,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:17:51,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903952253] [2021-08-13 18:17:51,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903952253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:17:51,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:17:51,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:17:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502138282] [2021-08-13 18:17:51,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:17:51,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:17:51,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:17:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:17:51,556 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-08-13 18:17:51,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 6968 transitions, 228048 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:17:51,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:17:51,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-08-13 18:17:51,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 18:22:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:22:14,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 18:22:14,448 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 18:22:14,450 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 18:22:14,451 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 18:22:14,451 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 06:22:14 BasicIcfg [2021-08-13 18:22:14,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 18:22:14,452 INFO L168 Benchmark]: Toolchain (without parser) took 562891.24 ms. Allocated memory was 182.5 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 164.0 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 5.5 GB. Max. memory is 8.0 GB. [2021-08-13 18:22:14,452 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 182.5 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 18:22:14,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.54 ms. Allocated memory is still 182.5 MB. Free memory was 163.8 MB in the beginning and 162.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 18:22:14,452 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 ms. Allocated memory is still 182.5 MB. Free memory was 162.4 MB in the beginning and 161.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 18:22:14,452 INFO L168 Benchmark]: RCFGBuilder took 223.37 ms. Allocated memory is still 182.5 MB. Free memory was 161.3 MB in the beginning and 148.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-13 18:22:14,452 INFO L168 Benchmark]: TraceAbstraction took 562625.95 ms. Allocated memory was 182.5 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 148.3 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 5.5 GB. Max. memory is 8.0 GB. [2021-08-13 18:22:14,453 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 0.14 ms. Allocated memory is still 182.5 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 21.54 ms. Allocated memory is still 182.5 MB. Free memory was 163.8 MB in the beginning and 162.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.68 ms. Allocated memory is still 182.5 MB. Free memory was 162.4 MB in the beginning and 161.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 223.37 ms. Allocated memory is still 182.5 MB. Free memory was 161.3 MB in the beginning and 148.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 562625.95 ms. Allocated memory was 182.5 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 148.3 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 5.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 18/45 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 505649 conditions, 34248 events (23113/34247 cut-off events. For 99332/108135 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 246360 event pairs, 587 based on Foata normal form. 209/29948 useless extension candidates. Maximal degree in co-relation 505595. Up to 31528 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 562537.7ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 560806.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 44.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 210 SDtfs, 445 SDslu, 52 SDs, 0 SdLazy, 4684 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2196.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 407.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=228048occurred in iteration=16, InterpolantAutomatonStates: 92, 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: 28.1ms SsaConstructionTime, 142.1ms SatisfiabilityAnalysisTime, 985.0ms InterpolantComputationTime, 467 NumberOfCodeBlocks, 467 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 449 ConstructedInterpolants, 0 QuantifiedInterpolants, 2961 SizeOfPredicates, 1 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 23/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown