/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:24:52,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:24:52,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:24:52,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:24:52,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:24:52,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:24:52,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:24:52,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:24:52,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:24:52,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:24:52,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:24:52,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:24:52,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:24:52,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:24:52,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:24:52,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:24:52,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:24:52,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:24:52,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:24:52,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:24:52,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:24:52,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:24:52,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:24:52,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:24:52,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 09:24:52,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:24:52,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:24:52,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:24:52,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:24:52,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:24:52,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:24:52,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:24:52,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:24:52,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:24:52,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:24:52,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:24:52,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-06-11 09:24:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:24:52,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:24:52,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:24:52,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:24:52,371 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:24:52,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:24:52,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:24:52,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:24:52,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:24:52,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:24:52,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:24:52,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:24:52,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:24:52,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:24:52,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:24:52,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:24:52,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:24:52,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:24:52,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:24:52,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:24:52,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:24:52,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:24:52,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:24:52,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:24:52,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:24:52,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:24:52,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:24:52,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:24:52,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:24:52,376 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:24:52,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:24:52,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:24:52,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:24:52,755 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:24:52,756 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:24:52,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl [2021-06-11 09:24:52,757 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl' [2021-06-11 09:24:52,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:24:52,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:24:52,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:24:52,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:24:52,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:24:52,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:24:52,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:24:52,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:24:52,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:24:52,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... [2021-06-11 09:24:52,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:24:52,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:24:52,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:24:52,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:24:52,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:24:52,907 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:24:52,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:24:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:24:52,909 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-06-11 09:24:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-11 09:24:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-11 09:24:52,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 09:24:53,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:24:53,032 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 09:24:53,033 INFO L202 PluginConnector]: Adding new model pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:24:53 BoogieIcfgContainer [2021-06-11 09:24:53,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:24:53,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:24:53,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:24:53,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:24:53,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:24:52" (1/2) ... [2021-06-11 09:24:53,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145dea8f and model type pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:24:53, skipping insertion in model container [2021-06-11 09:24:53,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:24:53" (2/2) ... [2021-06-11 09:24:53,041 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread_nondet_loop_bound.bpl [2021-06-11 09:24:53,046 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:24:53,050 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:24:53,050 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:24:53,067 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,068 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,068 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,069 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,071 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,075 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:53,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 09:24:53,128 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:53,128 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:53,128 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:53,128 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:53,128 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:53,129 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:53,129 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:53,129 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:53,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 13 transitions, 31 flow [2021-06-11 09:24:53,172 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-11 09:24:53,173 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:53,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 09:24:53,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 13 transitions, 31 flow [2021-06-11 09:24:53,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 13 transitions, 31 flow [2021-06-11 09:24:53,181 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:53,195 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 13 transitions, 31 flow [2021-06-11 09:24:53,200 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 13 transitions, 31 flow [2021-06-11 09:24:53,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 13 transitions, 31 flow [2021-06-11 09:24:53,215 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-11 09:24:53,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:53,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 09:24:53,217 INFO L151 LiptonReduction]: Number of co-enabled transitions 50 [2021-06-11 09:24:53,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:53,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:53,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:53,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:53,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:53,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:53,534 INFO L163 LiptonReduction]: Checked pairs total: 28 [2021-06-11 09:24:53,534 INFO L165 LiptonReduction]: Total number of compositions: 7 [2021-06-11 09:24:53,536 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 356 [2021-06-11 09:24:53,545 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-11 09:24:53,545 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:53,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:53,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-11 09:24:53,547 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-11 09:24:53,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1984598, now seen corresponding path program 1 times [2021-06-11 09:24:53,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:53,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517643895] [2021-06-11 09:24:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:53,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:53,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:53,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:53,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:53,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517643895] [2021-06-11 09:24:53,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:53,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 09:24:53,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878080005] [2021-06-11 09:24:53,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 09:24:53,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 09:24:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 09:24:53,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2021-06-11 09:24:53,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:53,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:53,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2021-06-11 09:24:53,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:53,764 INFO L129 PetriNetUnfolder]: 4/17 cut-off events. [2021-06-11 09:24:53,764 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 09:24:53,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 17 events. 4/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 28 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 20. Up to 10 conditions per place. [2021-06-11 09:24:53,767 INFO L132 encePairwiseOnDemand]: 16/20 looper letters, 5 selfloop transitions, 3 changer transitions 5/13 dead transitions. [2021-06-11 09:24:53,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 13 transitions, 59 flow [2021-06-11 09:24:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 09:24:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 09:24:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-06-11 09:24:53,778 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.325 [2021-06-11 09:24:53,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 26 transitions. [2021-06-11 09:24:53,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 26 transitions. [2021-06-11 09:24:53,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:53,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 26 transitions. [2021-06-11 09:24:53,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:53,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:53,788 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:53,790 INFO L185 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 4 states and 26 transitions. [2021-06-11 09:24:53,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 13 transitions, 59 flow [2021-06-11 09:24:53,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:53,795 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 23 flow [2021-06-11 09:24:53,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=23, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2021-06-11 09:24:53,798 INFO L343 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2021-06-11 09:24:53,798 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:53,798 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 6 transitions, 23 flow [2021-06-11 09:24:53,799 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 6 transitions, 23 flow [2021-06-11 09:24:53,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 6 transitions, 23 flow [2021-06-11 09:24:53,801 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 09:24:53,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:24:53,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 09:24:53,802 INFO L151 LiptonReduction]: Number of co-enabled transitions 4 [2021-06-11 09:24:53,872 INFO L163 LiptonReduction]: Checked pairs total: 2 [2021-06-11 09:24:53,872 INFO L165 LiptonReduction]: Total number of compositions: 3 [2021-06-11 09:24:53,873 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-06-11 09:24:53,875 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 23 flow [2021-06-11 09:24:53,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:53,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:53,876 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-11 09:24:53,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:24:53,877 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-11 09:24:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:53,878 INFO L82 PathProgramCache]: Analyzing trace with hash 61521954, now seen corresponding path program 1 times [2021-06-11 09:24:53,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:53,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647682452] [2021-06-11 09:24:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:53,890 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:53,901 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:53,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:53,917 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:53,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:24:53,922 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:53,923 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-11 09:24:53,929 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,930 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,930 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,930 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,931 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,932 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,932 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,933 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,934 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,936 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:53,940 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:53,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-11 09:24:53,944 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:53,945 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:53,950 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:53,950 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:53,950 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:53,951 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:53,951 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:53,951 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:53,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-06-11 09:24:53,966 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-11 09:24:53,967 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 09:24:53,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 26 events. 0/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 09:24:53,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 50 flow [2021-06-11 09:24:53,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2021-06-11 09:24:53,969 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:53,969 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 50 flow [2021-06-11 09:24:53,970 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 50 flow [2021-06-11 09:24:53,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-06-11 09:24:53,979 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-11 09:24:53,979 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 09:24:53,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 26 events. 0/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 09:24:53,980 INFO L151 LiptonReduction]: Number of co-enabled transitions 160 [2021-06-11 09:24:53,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:54,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:54,106 INFO L163 LiptonReduction]: Checked pairs total: 248 [2021-06-11 09:24:54,106 INFO L165 LiptonReduction]: Total number of compositions: 5 [2021-06-11 09:24:54,106 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 137 [2021-06-11 09:24:54,113 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 09:24:54,114 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 09:24:54,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:54,114 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:24:54,114 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1357935136, now seen corresponding path program 1 times [2021-06-11 09:24:54,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:54,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586441472] [2021-06-11 09:24:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:54,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:54,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:54,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:54,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:54,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586441472] [2021-06-11 09:24:54,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:54,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 09:24:54,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339105698] [2021-06-11 09:24:54,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-11 09:24:54,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:54,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-11 09:24:54,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-11 09:24:54,178 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2021-06-11 09:24:54,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:54,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:54,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2021-06-11 09:24:54,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:54,463 INFO L129 PetriNetUnfolder]: 248/493 cut-off events. [2021-06-11 09:24:54,464 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-06-11 09:24:54,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 493 events. 248/493 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2452 event pairs, 29 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 726. Up to 151 conditions per place. [2021-06-11 09:24:54,470 INFO L132 encePairwiseOnDemand]: 14/24 looper letters, 44 selfloop transitions, 17 changer transitions 5/66 dead transitions. [2021-06-11 09:24:54,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 66 transitions, 306 flow [2021-06-11 09:24:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 09:24:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 09:24:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2021-06-11 09:24:54,473 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.475 [2021-06-11 09:24:54,473 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 114 transitions. [2021-06-11 09:24:54,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 114 transitions. [2021-06-11 09:24:54,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:54,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 114 transitions. [2021-06-11 09:24:54,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:54,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 24.0) internal successors, (264), 11 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:54,476 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 24.0) internal successors, (264), 11 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:54,476 INFO L185 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 10 states and 114 transitions. [2021-06-11 09:24:54,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 66 transitions, 306 flow [2021-06-11 09:24:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 66 transitions, 294 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:54,481 INFO L241 Difference]: Finished difference. Result has 37 places, 31 transitions, 173 flow [2021-06-11 09:24:54,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=173, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2021-06-11 09:24:54,482 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2021-06-11 09:24:54,482 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:54,482 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 31 transitions, 173 flow [2021-06-11 09:24:54,483 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 31 transitions, 173 flow [2021-06-11 09:24:54,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 31 transitions, 173 flow [2021-06-11 09:24:54,504 INFO L129 PetriNetUnfolder]: 35/124 cut-off events. [2021-06-11 09:24:54,504 INFO L130 PetriNetUnfolder]: For 135/155 co-relation queries the response was YES. [2021-06-11 09:24:54,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 124 events. 35/124 cut-off events. For 135/155 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 678 event pairs, 16 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 372. Up to 50 conditions per place. [2021-06-11 09:24:54,510 INFO L151 LiptonReduction]: Number of co-enabled transitions 156 [2021-06-11 09:24:54,539 INFO L163 LiptonReduction]: Checked pairs total: 64 [2021-06-11 09:24:54,540 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 09:24:54,540 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 58 [2021-06-11 09:24:54,541 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 175 flow [2021-06-11 09:24:54,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:54,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:54,541 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2021-06-11 09:24:54,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:24:54,542 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:54,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:54,542 INFO L82 PathProgramCache]: Analyzing trace with hash 686687621, now seen corresponding path program 1 times [2021-06-11 09:24:54,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:54,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674875103] [2021-06-11 09:24:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:54,548 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:24:54,553 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:24:54,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:24:54,555 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:24:54,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:24:54,555 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:24:54,556 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-11 09:24:54,560 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,560 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,561 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,561 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,561 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,561 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,562 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,562 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,562 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,562 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,563 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,563 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,563 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,565 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,566 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:24:54,567 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:24:54,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-11 09:24:54,568 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:24:54,568 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:24:54,569 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:24:54,569 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:24:54,569 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:24:54,569 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:24:54,569 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:24:54,569 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:24:54,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2021-06-11 09:24:54,574 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-06-11 09:24:54,574 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-11 09:24:54,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 36 events. 0/36 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 09:24:54,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2021-06-11 09:24:54,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 71 flow [2021-06-11 09:24:54,575 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:54,575 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 25 transitions, 71 flow [2021-06-11 09:24:54,575 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 25 transitions, 71 flow [2021-06-11 09:24:54,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2021-06-11 09:24:54,579 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-06-11 09:24:54,579 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-11 09:24:54,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 36 events. 0/36 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 09:24:54,580 INFO L151 LiptonReduction]: Number of co-enabled transitions 330 [2021-06-11 09:24:54,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:54,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:24:54,747 INFO L163 LiptonReduction]: Checked pairs total: 618 [2021-06-11 09:24:54,747 INFO L165 LiptonReduction]: Total number of compositions: 6 [2021-06-11 09:24:54,747 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 172 [2021-06-11 09:24:54,754 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 09:24:54,754 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 09:24:54,754 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:54,754 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:24:54,754 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash -268914209, now seen corresponding path program 1 times [2021-06-11 09:24:54,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:54,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773900418] [2021-06-11 09:24:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:54,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:54,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:54,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:54,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:54,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:54,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773900418] [2021-06-11 09:24:54,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:24:54,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 09:24:54,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940520647] [2021-06-11 09:24:54,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-11 09:24:54,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-11 09:24:54,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-11 09:24:54,824 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2021-06-11 09:24:54,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:54,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:54,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2021-06-11 09:24:54,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:55,400 INFO L129 PetriNetUnfolder]: 2853/4577 cut-off events. [2021-06-11 09:24:55,400 INFO L130 PetriNetUnfolder]: For 1921/1921 co-relation queries the response was YES. [2021-06-11 09:24:55,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10174 conditions, 4577 events. 2853/4577 cut-off events. For 1921/1921 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 27378 event pairs, 431 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 5492. Up to 1275 conditions per place. [2021-06-11 09:24:55,438 INFO L132 encePairwiseOnDemand]: 18/31 looper letters, 75 selfloop transitions, 28 changer transitions 1/104 dead transitions. [2021-06-11 09:24:55,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 104 transitions, 512 flow [2021-06-11 09:24:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 09:24:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 09:24:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2021-06-11 09:24:55,441 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.535483870967742 [2021-06-11 09:24:55,441 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 166 transitions. [2021-06-11 09:24:55,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 166 transitions. [2021-06-11 09:24:55,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:55,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 166 transitions. [2021-06-11 09:24:55,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:55,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:55,444 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:55,444 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 61 flow. Second operand 10 states and 166 transitions. [2021-06-11 09:24:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 104 transitions, 512 flow [2021-06-11 09:24:55,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 104 transitions, 476 flow, removed 18 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:55,449 INFO L241 Difference]: Finished difference. Result has 44 places, 50 transitions, 279 flow [2021-06-11 09:24:55,449 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=44, PETRI_TRANSITIONS=50} [2021-06-11 09:24:55,449 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2021-06-11 09:24:55,449 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:55,449 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 50 transitions, 279 flow [2021-06-11 09:24:55,450 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 50 transitions, 279 flow [2021-06-11 09:24:55,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 50 transitions, 279 flow [2021-06-11 09:24:55,512 INFO L129 PetriNetUnfolder]: 418/876 cut-off events. [2021-06-11 09:24:55,512 INFO L130 PetriNetUnfolder]: For 889/1148 co-relation queries the response was YES. [2021-06-11 09:24:55,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2926 conditions, 876 events. 418/876 cut-off events. For 889/1148 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6085 event pairs, 147 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 2884. Up to 350 conditions per place. [2021-06-11 09:24:55,527 INFO L151 LiptonReduction]: Number of co-enabled transitions 428 [2021-06-11 09:24:55,562 INFO L163 LiptonReduction]: Checked pairs total: 912 [2021-06-11 09:24:55,562 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 09:24:55,562 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 113 [2021-06-11 09:24:55,563 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 50 transitions, 281 flow [2021-06-11 09:24:55,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:55,563 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:55,563 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:24:55,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:24:55,564 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:55,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1643670601, now seen corresponding path program 1 times [2021-06-11 09:24:55,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:55,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003488584] [2021-06-11 09:24:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:55,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:55,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:55,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:55,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-11 09:24:55,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003488584] [2021-06-11 09:24:55,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444198293] [2021-06-11 09:24:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:24:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:55,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-11 09:24:55,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:24:55,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:55,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:55,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:55,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:55,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:55,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:55,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:24:55,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:55,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:55,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:24:55,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:55,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:55,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:55,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:55,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:55,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:55,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:55,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:24:55,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-06-11 09:24:55,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609428752] [2021-06-11 09:24:55,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:24:55,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:55,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:24:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:24:55,858 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2021-06-11 09:24:55,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 50 transitions, 281 flow. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:55,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:55,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2021-06-11 09:24:55,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:24:56,992 INFO L129 PetriNetUnfolder]: 4714/7936 cut-off events. [2021-06-11 09:24:56,992 INFO L130 PetriNetUnfolder]: For 11791/11791 co-relation queries the response was YES. [2021-06-11 09:24:57,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29695 conditions, 7936 events. 4714/7936 cut-off events. For 11791/11791 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 57075 event pairs, 1086 based on Foata normal form. 345/8281 useless extension candidates. Maximal degree in co-relation 15570. Up to 2014 conditions per place. [2021-06-11 09:24:57,082 INFO L132 encePairwiseOnDemand]: 17/32 looper letters, 120 selfloop transitions, 87 changer transitions 3/210 dead transitions. [2021-06-11 09:24:57,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 210 transitions, 1529 flow [2021-06-11 09:24:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-11 09:24:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-11 09:24:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 211 transitions. [2021-06-11 09:24:57,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.47098214285714285 [2021-06-11 09:24:57,088 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 211 transitions. [2021-06-11 09:24:57,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 211 transitions. [2021-06-11 09:24:57,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:24:57,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 211 transitions. [2021-06-11 09:24:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.071428571428571) internal successors, (211), 14 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:57,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 32.0) internal successors, (480), 15 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:57,093 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 32.0) internal successors, (480), 15 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:57,094 INFO L185 Difference]: Start difference. First operand has 44 places, 50 transitions, 281 flow. Second operand 14 states and 211 transitions. [2021-06-11 09:24:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 210 transitions, 1529 flow [2021-06-11 09:24:57,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 210 transitions, 1527 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-11 09:24:57,292 INFO L241 Difference]: Finished difference. Result has 66 places, 124 transitions, 1108 flow [2021-06-11 09:24:57,292 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1108, PETRI_PLACES=66, PETRI_TRANSITIONS=124} [2021-06-11 09:24:57,293 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 39 predicate places. [2021-06-11 09:24:57,293 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:24:57,293 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 124 transitions, 1108 flow [2021-06-11 09:24:57,293 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 124 transitions, 1108 flow [2021-06-11 09:24:57,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 124 transitions, 1108 flow [2021-06-11 09:24:57,475 INFO L129 PetriNetUnfolder]: 971/2125 cut-off events. [2021-06-11 09:24:57,475 INFO L130 PetriNetUnfolder]: For 6808/7259 co-relation queries the response was YES. [2021-06-11 09:24:57,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10813 conditions, 2125 events. 971/2125 cut-off events. For 6808/7259 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 18029 event pairs, 256 based on Foata normal form. 10/2014 useless extension candidates. Maximal degree in co-relation 10721. Up to 728 conditions per place. [2021-06-11 09:24:57,510 INFO L151 LiptonReduction]: Number of co-enabled transitions 824 [2021-06-11 09:24:57,536 INFO L163 LiptonReduction]: Checked pairs total: 1274 [2021-06-11 09:24:57,536 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:24:57,536 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 243 [2021-06-11 09:24:57,540 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 124 transitions, 1108 flow [2021-06-11 09:24:57,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:57,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:24:57,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:24:57,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-11 09:24:57,757 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:24:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:24:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2085779841, now seen corresponding path program 1 times [2021-06-11 09:24:57,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:24:57,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798248672] [2021-06-11 09:24:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:24:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:57,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:57,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:57,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:57,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:57,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:57,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:24:57,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:24:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:57,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798248672] [2021-06-11 09:24:57,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319238916] [2021-06-11 09:24:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:24:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:24:57,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-11 09:24:57,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:24:57,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:24:57,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:57,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:57,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:57,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:57,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:57,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:57,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:57,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:57,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:24:57,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:57,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:57,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:57,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:57,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:58,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:58,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:58,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:58,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:24:58,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:58,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:58,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:24:58,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:24:58,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:24:58,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:24:58,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:24:58,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:24:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:24:58,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:24:58,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-06-11 09:24:58,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396353205] [2021-06-11 09:24:58,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:24:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:24:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:24:58,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:24:58,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2021-06-11 09:24:58,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 124 transitions, 1108 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:24:58,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:24:58,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2021-06-11 09:24:58,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:02,052 INFO L129 PetriNetUnfolder]: 13050/22323 cut-off events. [2021-06-11 09:25:02,053 INFO L130 PetriNetUnfolder]: For 83378/83378 co-relation queries the response was YES. [2021-06-11 09:25:02,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116395 conditions, 22323 events. 13050/22323 cut-off events. For 83378/83378 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 192542 event pairs, 1203 based on Foata normal form. 369/22692 useless extension candidates. Maximal degree in co-relation 112582. Up to 7603 conditions per place. [2021-06-11 09:25:02,288 INFO L132 encePairwiseOnDemand]: 16/32 looper letters, 457 selfloop transitions, 435 changer transitions 5/897 dead transitions. [2021-06-11 09:25:02,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 897 transitions, 9312 flow [2021-06-11 09:25:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-11 09:25:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-06-11 09:25:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 824 transitions. [2021-06-11 09:25:02,292 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2021-06-11 09:25:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 824 transitions. [2021-06-11 09:25:02,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 824 transitions. [2021-06-11 09:25:02,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:02,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 824 transitions. [2021-06-11 09:25:02,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 15.547169811320755) internal successors, (824), 53 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:02,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 32.0) internal successors, (1728), 54 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:02,301 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 32.0) internal successors, (1728), 54 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:02,301 INFO L185 Difference]: Start difference. First operand has 64 places, 124 transitions, 1108 flow. Second operand 53 states and 824 transitions. [2021-06-11 09:25:02,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 897 transitions, 9312 flow [2021-06-11 09:25:03,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 897 transitions, 9228 flow, removed 42 selfloop flow, removed 1 redundant places. [2021-06-11 09:25:03,772 INFO L241 Difference]: Finished difference. Result has 146 places, 517 transitions, 6339 flow [2021-06-11 09:25:03,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6339, PETRI_PLACES=146, PETRI_TRANSITIONS=517} [2021-06-11 09:25:03,773 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 119 predicate places. [2021-06-11 09:25:03,773 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:03,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 517 transitions, 6339 flow [2021-06-11 09:25:03,774 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 517 transitions, 6339 flow [2021-06-11 09:25:03,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 517 transitions, 6339 flow [2021-06-11 09:25:04,872 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([94] L18-->L19: Formula: (= v_x_3 (+ v_threadThread2of3ForFork0_t_3 1)) InVars {threadThread2of3ForFork0_t=v_threadThread2of3ForFork0_t_3} OutVars{threadThread2of3ForFork0_t=v_threadThread2of3ForFork0_t_3, x=v_x_3} AuxVars[] AssignedVars[x][230], [Black: 193#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 197#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 201#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n)), 7#L19true, Black: 203#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 205#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 207#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 144#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0)), Black: 148#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 213#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 215#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 217#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 221#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 223#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), 18#threadEXITtrue, Black: 225#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 227#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 231#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 233#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), 21#threadEXITtrue, Black: 171#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0)), 22#L30true, Black: 173#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 239#(and (<= (+ x 1) n) (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 175#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0)), Black: 177#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 243#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 181#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 247#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), threadThread1of3ForFork0InUse, Black: 185#(and (<= (+ x 1) n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 187#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 251#(and (<= x n) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), threadThread2of3ForFork0InUse, Black: 253#(and (<= x n) (<= x ULTIMATE.start_i)), Black: 189#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x 1)), threadThread3of3ForFork0InUse, 40#(<= (+ threadThread1of3ForFork0_t 1) n), Black: 49#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 51#(and (<= x n) (<= x ULTIMATE.start_i)), Black: 36#true, 183#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 41#(<= x n), Black: 43#(and (<= (+ x 1) n) (<= x ULTIMATE.start_i)), Black: 47#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n)), 62#true, Black: 112#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1)), Black: 98#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n)), Black: 67#(<= x n), Black: 100#(and (<= x 0) (<= (+ x 1) n) (<= 1 ULTIMATE.start_i)), Black: 102#(and (<= x 0) (< 1 n) (<= 1 ULTIMATE.start_i)), Black: 92#(and (<= threadThread2of3ForFork0_t 0) (< 1 n)), Black: 108#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1) (<= x ULTIMATE.start_i)), Black: 110#(and (<= x n) (<= threadThread2of3ForFork0_t 0) (< 1 n))]) [2021-06-11 09:25:04,872 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2021-06-11 09:25:04,872 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:04,872 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:04,872 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:05,249 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([94] L18-->L19: Formula: (= v_x_3 (+ v_threadThread2of3ForFork0_t_3 1)) InVars {threadThread2of3ForFork0_t=v_threadThread2of3ForFork0_t_3} OutVars{threadThread2of3ForFork0_t=v_threadThread2of3ForFork0_t_3, x=v_x_3} AuxVars[] AssignedVars[x][230], [Black: 193#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 197#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 201#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n)), 7#L19true, Black: 203#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 205#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 207#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 144#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0)), Black: 148#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 213#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 215#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 217#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 221#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 223#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), 18#threadEXITtrue, Black: 225#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 227#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 231#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 233#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), 21#threadEXITtrue, Black: 171#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0)), Black: 173#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 239#(and (<= (+ x 1) n) (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 175#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0)), Black: 177#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 243#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 181#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), 28#ULTIMATE.startErr0INUSE_VIOLATIONtrue, Black: 247#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 185#(and (<= (+ x 1) n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), threadThread1of3ForFork0InUse, Black: 187#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 251#(and (<= x n) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), threadThread2of3ForFork0InUse, Black: 253#(and (<= x n) (<= x ULTIMATE.start_i)), Black: 189#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x 1)), threadThread3of3ForFork0InUse, 40#(<= (+ threadThread1of3ForFork0_t 1) n), Black: 49#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 51#(and (<= x n) (<= x ULTIMATE.start_i)), Black: 36#true, 183#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 41#(<= x n), Black: 43#(and (<= (+ x 1) n) (<= x ULTIMATE.start_i)), Black: 47#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n)), 62#true, Black: 112#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1)), Black: 98#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n)), Black: 67#(<= x n), Black: 100#(and (<= x 0) (<= (+ x 1) n) (<= 1 ULTIMATE.start_i)), Black: 102#(and (<= x 0) (< 1 n) (<= 1 ULTIMATE.start_i)), Black: 92#(and (<= threadThread2of3ForFork0_t 0) (< 1 n)), Black: 108#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1) (<= x ULTIMATE.start_i)), Black: 110#(and (<= x n) (<= threadThread2of3ForFork0_t 0) (< 1 n))]) [2021-06-11 09:25:05,250 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is not cut-off event [2021-06-11 09:25:05,250 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is not cut-off event [2021-06-11 09:25:05,250 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is not cut-off event [2021-06-11 09:25:05,250 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is not cut-off event [2021-06-11 09:25:05,605 INFO L129 PetriNetUnfolder]: 5813/12013 cut-off events. [2021-06-11 09:25:05,605 INFO L130 PetriNetUnfolder]: For 188976/192631 co-relation queries the response was YES. [2021-06-11 09:25:05,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91372 conditions, 12013 events. 5813/12013 cut-off events. For 188976/192631 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 126044 event pairs, 1563 based on Foata normal form. 562/11827 useless extension candidates. Maximal degree in co-relation 85514. Up to 4510 conditions per place. [2021-06-11 09:25:05,903 INFO L151 LiptonReduction]: Number of co-enabled transitions 2236 [2021-06-11 09:25:06,044 INFO L163 LiptonReduction]: Checked pairs total: 32915 [2021-06-11 09:25:06,044 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:06,045 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2272 [2021-06-11 09:25:06,045 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 517 transitions, 6339 flow [2021-06-11 09:25:06,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:06,046 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:06,046 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:25:06,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:25:06,261 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:06,261 INFO L82 PathProgramCache]: Analyzing trace with hash -228520049, now seen corresponding path program 2 times [2021-06-11 09:25:06,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:06,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848768554] [2021-06-11 09:25:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:06,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:06,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:06,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:06,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:06,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:06,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:06,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:06,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848768554] [2021-06-11 09:25:06,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416947720] [2021-06-11 09:25:06,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:25:06,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-11 09:25:06,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-11 09:25:06,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-11 09:25:06,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:25:06,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:06,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:06,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:06,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:06,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:25:06,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:06,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:25:06,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:06,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:06,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:06,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:25:06,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:06,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:06,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:06,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:06,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:06,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:06,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:06,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:25:06,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-06-11 09:25:06,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819582264] [2021-06-11 09:25:06,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:25:06,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:25:06,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:25:06,547 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2021-06-11 09:25:06,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 517 transitions, 6339 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:06,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:06,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2021-06-11 09:25:06,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:15,621 INFO L129 PetriNetUnfolder]: 20548/35685 cut-off events. [2021-06-11 09:25:15,621 INFO L130 PetriNetUnfolder]: For 656446/656446 co-relation queries the response was YES. [2021-06-11 09:25:16,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295005 conditions, 35685 events. 20548/35685 cut-off events. For 656446/656446 co-relation queries the response was YES. Maximal size of possible extension queue 3171. Compared 335349 event pairs, 2239 based on Foata normal form. 342/36027 useless extension candidates. Maximal degree in co-relation 271447. Up to 13218 conditions per place. [2021-06-11 09:25:16,309 INFO L132 encePairwiseOnDemand]: 16/32 looper letters, 505 selfloop transitions, 900 changer transitions 19/1424 dead transitions. [2021-06-11 09:25:16,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1424 transitions, 20712 flow [2021-06-11 09:25:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 09:25:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 09:25:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 456 transitions. [2021-06-11 09:25:16,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4596774193548387 [2021-06-11 09:25:16,312 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 456 transitions. [2021-06-11 09:25:16,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 456 transitions. [2021-06-11 09:25:16,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:16,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 456 transitions. [2021-06-11 09:25:16,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 14.709677419354838) internal successors, (456), 31 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:16,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 32.0) internal successors, (1024), 32 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:16,317 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 32.0) internal successors, (1024), 32 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:16,317 INFO L185 Difference]: Start difference. First operand has 146 places, 517 transitions, 6339 flow. Second operand 31 states and 456 transitions. [2021-06-11 09:25:16,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1424 transitions, 20712 flow [2021-06-11 09:25:29,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1424 transitions, 20060 flow, removed 287 selfloop flow, removed 3 redundant places. [2021-06-11 09:25:29,124 INFO L241 Difference]: Finished difference. Result has 189 places, 1076 transitions, 16524 flow [2021-06-11 09:25:29,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6110, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=16524, PETRI_PLACES=189, PETRI_TRANSITIONS=1076} [2021-06-11 09:25:29,125 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 162 predicate places. [2021-06-11 09:25:29,125 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:25:29,125 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 1076 transitions, 16524 flow [2021-06-11 09:25:29,125 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 1076 transitions, 16524 flow [2021-06-11 09:25:29,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 1076 transitions, 16524 flow [2021-06-11 09:25:32,085 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([95] L19-->threadErr0ASSERT_VIOLATIONASSERT: Formula: (not (<= v_x_4 v_n_3)) InVars {x=v_x_4, n=v_n_3} OutVars{x=v_x_4, n=v_n_3} AuxVars[] AssignedVars[][1005], [Black: 352#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n)), Black: 354#(and (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 193#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 197#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 201#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 292#true, 8#threadErr0ASSERT_VIOLATIONASSERTtrue, Black: 203#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 356#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= x ULTIMATE.start_i)), Black: 358#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0)), Black: 205#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 362#(and (<= threadThread2of3ForFork0_t 1) (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 207#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 144#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0)), Black: 330#(and (<= threadThread2of3ForFork0_t 1) (< 1 n)), Black: 148#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 364#(and (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= (+ x 2) n)), Black: 213#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 366#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 370#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x ULTIMATE.start_i)), Black: 215#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 372#(and (<= threadThread2of3ForFork0_t 1) (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= (+ x 2) n)), Black: 217#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 340#(and (<= x 0) (< 1 n) (<= 1 ULTIMATE.start_i)), 16#threadErr0ASSERT_VIOLATIONASSERTtrue, Black: 221#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 223#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), 17#L19true, Black: 376#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0)), Black: 225#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 378#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 227#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 346#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= x ULTIMATE.start_i)), Black: 231#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 233#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 171#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0)), 22#L30true, Black: 173#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 239#(and (<= (+ x 1) n) (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 175#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0)), Black: 177#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 243#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 181#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 247#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), threadThread1of3ForFork0InUse, Black: 185#(and (<= (+ x 1) n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 187#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 251#(and (<= x n) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), threadThread2of3ForFork0InUse, Black: 253#(and (<= x n) (<= x ULTIMATE.start_i)), Black: 189#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x 1)), threadThread3of3ForFork0InUse, 40#(<= (+ threadThread1of3ForFork0_t 1) n), Black: 49#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 51#(and (<= x n) (<= x ULTIMATE.start_i)), 183#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 36#true, Black: 41#(<= x n), Black: 43#(and (<= (+ x 1) n) (<= x ULTIMATE.start_i)), Black: 47#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n)), 62#true, 322#(and (< 1 n) (<= threadThread1of3ForFork0_t 0)), Black: 112#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1)), Black: 98#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n)), Black: 67#(<= x n), Black: 100#(and (<= x 0) (<= (+ x 1) n) (<= 1 ULTIMATE.start_i)), Black: 102#(and (<= x 0) (< 1 n) (<= 1 ULTIMATE.start_i)), Black: 92#(and (<= threadThread2of3ForFork0_t 0) (< 1 n)), Black: 108#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1) (<= x ULTIMATE.start_i)), Black: 110#(and (<= x n) (<= threadThread2of3ForFork0_t 0) (< 1 n))]) [2021-06-11 09:25:32,085 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,085 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,085 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,085 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,086 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([95] L19-->threadErr0ASSERT_VIOLATIONASSERT: Formula: (not (<= v_x_4 v_n_3)) InVars {x=v_x_4, n=v_n_3} OutVars{x=v_x_4, n=v_n_3} AuxVars[] AssignedVars[][1005], [Black: 352#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n)), Black: 354#(and (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 193#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 197#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 201#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 292#true, Black: 203#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 356#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= x ULTIMATE.start_i)), 8#threadErr0ASSERT_VIOLATIONASSERTtrue, Black: 205#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 358#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0)), Black: 362#(and (<= threadThread2of3ForFork0_t 1) (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 207#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 330#(and (<= threadThread2of3ForFork0_t 1) (< 1 n)), Black: 144#(and (<= 0 ULTIMATE.start_i) (<= threadThread1of3ForFork0_t 0)), Black: 148#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 364#(and (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= (+ x 2) n)), Black: 366#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 213#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 215#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 370#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x ULTIMATE.start_i)), Black: 217#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 372#(and (<= threadThread2of3ForFork0_t 1) (<= (+ x 1) ULTIMATE.start_i) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= (+ x 2) n)), Black: 221#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), 16#threadErr0ASSERT_VIOLATIONASSERTtrue, Black: 340#(and (<= x 0) (< 1 n) (<= 1 ULTIMATE.start_i)), Black: 376#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0)), 17#L19true, Black: 223#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 378#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1)), Black: 225#(and (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 227#(and (<= x n) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 346#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= x 1) (<= x ULTIMATE.start_i)), Black: 231#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n)), Black: 233#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 171#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0)), Black: 173#(and (<= x 0) (<= (+ x 1) n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 239#(and (<= (+ x 1) n) (<= x 2) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 175#(and (<= 0 ULTIMATE.start_i) (<= x n) (<= threadThread1of3ForFork0_t 0)), Black: 177#(and (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 243#(and (<= x n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= (+ threadThread2of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), 28#ULTIMATE.startErr0INUSE_VIOLATIONtrue, Black: 181#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 247#(and (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 185#(and (<= (+ x 1) n) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), threadThread1of3ForFork0InUse, Black: 187#(and (<= x n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x ULTIMATE.start_i)), Black: 251#(and (<= x n) (<= threadThread2of3ForFork0_t 1) (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), threadThread2of3ForFork0InUse, Black: 253#(and (<= x n) (<= x ULTIMATE.start_i)), threadThread3of3ForFork0InUse, Black: 189#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i) (<= x 1)), 40#(<= (+ threadThread1of3ForFork0_t 1) n), Black: 49#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n) (<= x ULTIMATE.start_i)), Black: 51#(and (<= x n) (<= x ULTIMATE.start_i)), 183#(and (< 1 n) (<= threadThread1of3ForFork0_t 0) (<= 1 ULTIMATE.start_i)), Black: 36#true, Black: 41#(<= x n), Black: 43#(and (<= (+ x 1) n) (<= x ULTIMATE.start_i)), Black: 47#(and (<= x n) (<= (+ threadThread1of3ForFork0_t 1) n)), 62#true, 322#(and (< 1 n) (<= threadThread1of3ForFork0_t 0)), Black: 112#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1)), Black: 98#(and (<= 0 ULTIMATE.start_i) (<= x 0) (<= (+ x 1) n)), Black: 67#(<= x n), Black: 100#(and (<= x 0) (<= (+ x 1) n) (<= 1 ULTIMATE.start_i)), Black: 102#(and (<= x 0) (< 1 n) (<= 1 ULTIMATE.start_i)), Black: 92#(and (<= threadThread2of3ForFork0_t 0) (< 1 n)), Black: 108#(and (<= threadThread2of3ForFork0_t 0) (< 1 n) (<= x 1) (<= x ULTIMATE.start_i)), Black: 110#(and (<= x n) (<= threadThread2of3ForFork0_t 0) (< 1 n))]) [2021-06-11 09:25:32,087 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,087 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,087 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:32,087 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 09:25:33,672 INFO L129 PetriNetUnfolder]: 9615/20257 cut-off events. [2021-06-11 09:25:33,673 INFO L130 PetriNetUnfolder]: For 473307/482073 co-relation queries the response was YES. [2021-06-11 09:25:33,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179522 conditions, 20257 events. 9615/20257 cut-off events. For 473307/482073 co-relation queries the response was YES. Maximal size of possible extension queue 2965. Compared 231152 event pairs, 2483 based on Foata normal form. 1537/20727 useless extension candidates. Maximal degree in co-relation 172510. Up to 7711 conditions per place. [2021-06-11 09:25:34,127 INFO L151 LiptonReduction]: Number of co-enabled transitions 3690 [2021-06-11 09:25:34,406 INFO L163 LiptonReduction]: Checked pairs total: 131428 [2021-06-11 09:25:34,406 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:25:34,406 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5281 [2021-06-11 09:25:34,407 INFO L480 AbstractCegarLoop]: Abstraction has has 189 places, 1076 transitions, 16524 flow [2021-06-11 09:25:34,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:34,407 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:25:34,407 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:25:34,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:25:34,618 INFO L428 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:25:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:25:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash -424838043, now seen corresponding path program 3 times [2021-06-11 09:25:34,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:25:34,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517410283] [2021-06-11 09:25:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:25:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:25:34,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:34,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:34,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:34,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:34,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:34,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:25:34,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:25:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:34,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517410283] [2021-06-11 09:25:34,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246498133] [2021-06-11 09:25:34,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:25:34,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-11 09:25:34,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-11 09:25:34,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-11 09:25:34,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:25:34,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:34,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:34,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:34,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:34,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:25:34,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:34,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:25:34,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:34,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:34,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:34,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:34,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:25:34,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:34,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:25:34,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:25:34,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:25:34,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:25:34,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:25:34,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:25:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:25:34,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:25:34,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-06-11 09:25:34,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663311614] [2021-06-11 09:25:34,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:25:34,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:25:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:25:34,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:25:34,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2021-06-11 09:25:34,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 1076 transitions, 16524 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:34,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:25:34,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2021-06-11 09:25:34,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:25:55,134 INFO L129 PetriNetUnfolder]: 28900/49871 cut-off events. [2021-06-11 09:25:55,134 INFO L130 PetriNetUnfolder]: For 1349273/1349273 co-relation queries the response was YES. [2021-06-11 09:25:55,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 477512 conditions, 49871 events. 28900/49871 cut-off events. For 1349273/1349273 co-relation queries the response was YES. Maximal size of possible extension queue 4482. Compared 485678 event pairs, 2370 based on Foata normal form. 381/50252 useless extension candidates. Maximal degree in co-relation 459125. Up to 18844 conditions per place. [2021-06-11 09:25:56,171 INFO L132 encePairwiseOnDemand]: 16/32 looper letters, 643 selfloop transitions, 1256 changer transitions 27/1926 dead transitions. [2021-06-11 09:25:56,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1926 transitions, 33435 flow [2021-06-11 09:25:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-11 09:25:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-06-11 09:25:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 557 transitions. [2021-06-11 09:25:56,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4463141025641026 [2021-06-11 09:25:56,174 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 557 transitions. [2021-06-11 09:25:56,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 557 transitions. [2021-06-11 09:25:56,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:25:56,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 557 transitions. [2021-06-11 09:25:56,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 14.282051282051283) internal successors, (557), 39 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:56,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 32.0) internal successors, (1280), 40 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:56,179 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 32.0) internal successors, (1280), 40 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:25:56,179 INFO L185 Difference]: Start difference. First operand has 189 places, 1076 transitions, 16524 flow. Second operand 39 states and 557 transitions. [2021-06-11 09:25:56,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1926 transitions, 33435 flow [2021-06-11 09:26:39,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1926 transitions, 33176 flow, removed 112 selfloop flow, removed 3 redundant places. [2021-06-11 09:26:39,539 INFO L241 Difference]: Finished difference. Result has 248 places, 1512 transitions, 28064 flow [2021-06-11 09:26:39,540 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=16316, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=845, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=28064, PETRI_PLACES=248, PETRI_TRANSITIONS=1512} [2021-06-11 09:26:39,540 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 221 predicate places. [2021-06-11 09:26:39,540 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:39,541 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 1512 transitions, 28064 flow [2021-06-11 09:26:39,541 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 1512 transitions, 28064 flow [2021-06-11 09:26:39,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 248 places, 1512 transitions, 28064 flow [2021-06-11 09:26:49,231 INFO L129 PetriNetUnfolder]: 13395/27946 cut-off events. [2021-06-11 09:26:49,231 INFO L130 PetriNetUnfolder]: For 1083633/1099551 co-relation queries the response was YES. [2021-06-11 09:26:49,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305886 conditions, 27946 events. 13395/27946 cut-off events. For 1083633/1099551 co-relation queries the response was YES. Maximal size of possible extension queue 4052. Compared 328597 event pairs, 3346 based on Foata normal form. 3121/29707 useless extension candidates. Maximal degree in co-relation 296204. Up to 10489 conditions per place. [2021-06-11 09:26:50,333 INFO L151 LiptonReduction]: Number of co-enabled transitions 5020 [2021-06-11 09:26:50,735 INFO L163 LiptonReduction]: Checked pairs total: 273768 [2021-06-11 09:26:50,735 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:26:50,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11195 [2021-06-11 09:26:50,736 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 1512 transitions, 28064 flow [2021-06-11 09:26:50,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:50,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:50,736 INFO L263 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2021-06-11 09:26:50,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:26:50,945 INFO L428 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1487830332, now seen corresponding path program 1 times [2021-06-11 09:26:50,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:50,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532764118] [2021-06-11 09:26:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:50,950 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:26:50,954 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:26:50,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:26:50,955 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:26:50,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 09:26:50,956 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-11 09:26:50,956 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-06-11 09:26:50,960 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,961 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,962 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,963 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,964 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,964 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,965 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:26:50,966 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 09:26:50,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-11 09:26:50,967 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:26:50,967 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:26:50,967 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:26:50,967 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:26:50,967 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:26:50,967 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:26:50,967 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:26:50,967 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:26:50,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 31 transitions, 94 flow [2021-06-11 09:26:50,970 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-06-11 09:26:50,970 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-11 09:26:50,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 46 events. 0/46 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-11 09:26:50,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 31 transitions, 94 flow [2021-06-11 09:26:50,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 94 flow [2021-06-11 09:26:50,970 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:50,970 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 31 transitions, 94 flow [2021-06-11 09:26:50,971 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 31 transitions, 94 flow [2021-06-11 09:26:50,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 31 transitions, 94 flow [2021-06-11 09:26:50,973 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-06-11 09:26:50,973 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-11 09:26:50,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 46 events. 0/46 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-11 09:26:50,973 INFO L151 LiptonReduction]: Number of co-enabled transitions 560 [2021-06-11 09:26:50,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:50,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:26:51,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:51,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:26:51,095 INFO L163 LiptonReduction]: Checked pairs total: 1062 [2021-06-11 09:26:51,095 INFO L165 LiptonReduction]: Total number of compositions: 7 [2021-06-11 09:26:51,095 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 125 [2021-06-11 09:26:51,097 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 09:26:51,097 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 09:26:51,097 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:51,097 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:26:51,097 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1055805166, now seen corresponding path program 1 times [2021-06-11 09:26:51,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:51,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469533936] [2021-06-11 09:26:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:51,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:51,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:51,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:51,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:26:51,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:51,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:26:51,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:51,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:26:51,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469533936] [2021-06-11 09:26:51,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:26:51,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 09:26:51,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829426665] [2021-06-11 09:26:51,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-11 09:26:51,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:26:51,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-11 09:26:51,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-11 09:26:51,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2021-06-11 09:26:51,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:51,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:26:51,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2021-06-11 09:26:51,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:26:53,157 INFO L129 PetriNetUnfolder]: 24171/34574 cut-off events. [2021-06-11 09:26:53,158 INFO L130 PetriNetUnfolder]: For 19469/19469 co-relation queries the response was YES. [2021-06-11 09:26:53,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77307 conditions, 34574 events. 24171/34574 cut-off events. For 19469/19469 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 224742 event pairs, 4270 based on Foata normal form. 0/27670 useless extension candidates. Maximal degree in co-relation 32176. Up to 10417 conditions per place. [2021-06-11 09:26:53,344 INFO L132 encePairwiseOnDemand]: 22/38 looper letters, 97 selfloop transitions, 36 changer transitions 1/134 dead transitions. [2021-06-11 09:26:53,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 134 transitions, 698 flow [2021-06-11 09:26:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 09:26:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 09:26:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2021-06-11 09:26:53,346 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2021-06-11 09:26:53,346 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2021-06-11 09:26:53,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2021-06-11 09:26:53,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:26:53,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2021-06-11 09:26:53,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:53,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:53,348 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:53,348 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 82 flow. Second operand 10 states and 210 transitions. [2021-06-11 09:26:53,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 134 transitions, 698 flow [2021-06-11 09:26:53,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 134 transitions, 626 flow, removed 36 selfloop flow, removed 0 redundant places. [2021-06-11 09:26:53,355 INFO L241 Difference]: Finished difference. Result has 51 places, 64 transitions, 359 flow [2021-06-11 09:26:53,355 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=359, PETRI_PLACES=51, PETRI_TRANSITIONS=64} [2021-06-11 09:26:53,355 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2021-06-11 09:26:53,355 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:26:53,355 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 64 transitions, 359 flow [2021-06-11 09:26:53,355 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 64 transitions, 359 flow [2021-06-11 09:26:53,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 64 transitions, 359 flow [2021-06-11 09:26:53,787 INFO L129 PetriNetUnfolder]: 3025/5203 cut-off events. [2021-06-11 09:26:53,787 INFO L130 PetriNetUnfolder]: For 4871/6452 co-relation queries the response was YES. [2021-06-11 09:26:53,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17328 conditions, 5203 events. 3025/5203 cut-off events. For 4871/6452 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 40140 event pairs, 1046 based on Foata normal form. 5/4668 useless extension candidates. Maximal degree in co-relation 17285. Up to 2000 conditions per place. [2021-06-11 09:26:53,836 INFO L151 LiptonReduction]: Number of co-enabled transitions 758 [2021-06-11 09:26:53,867 INFO L163 LiptonReduction]: Checked pairs total: 2208 [2021-06-11 09:26:53,868 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 09:26:53,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 513 [2021-06-11 09:26:53,868 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 361 flow [2021-06-11 09:26:53,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:53,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:26:53,868 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:26:53,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 09:26:53,868 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:26:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:26:53,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1059818345, now seen corresponding path program 1 times [2021-06-11 09:26:53,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:26:53,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683310329] [2021-06-11 09:26:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:26:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:53,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:53,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:26:53,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:26:53,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:26:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-11 09:26:53,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683310329] [2021-06-11 09:26:53,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597695891] [2021-06-11 09:26:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:26:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:26:53,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-11 09:26:53,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:26:53,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:26:53,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:26:53,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:26:53,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:26:53,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:26:53,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:26:53,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:26:53,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:26:53,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:26:53,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:53,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:26:53,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:26:53,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:53,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:54,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:26:54,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:54,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:54,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:26:54,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:26:54,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:26:54,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:26:54,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:54,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:26:54,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:26:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:26:54,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:26:54,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-06-11 09:26:54,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843351059] [2021-06-11 09:26:54,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:26:54,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:26:54,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:26:54,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:26:54,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2021-06-11 09:26:54,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 64 transitions, 361 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:26:54,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:26:54,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2021-06-11 09:26:54,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:01,104 INFO L129 PetriNetUnfolder]: 47079/69196 cut-off events. [2021-06-11 09:27:01,104 INFO L130 PetriNetUnfolder]: For 98759/98759 co-relation queries the response was YES. [2021-06-11 09:27:01,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254818 conditions, 69196 events. 47079/69196 cut-off events. For 98759/98759 co-relation queries the response was YES. Maximal size of possible extension queue 3693. Compared 523444 event pairs, 11085 based on Foata normal form. 2349/71545 useless extension candidates. Maximal degree in co-relation 128424. Up to 17803 conditions per place. [2021-06-11 09:27:01,584 INFO L132 encePairwiseOnDemand]: 21/39 looper letters, 160 selfloop transitions, 121 changer transitions 3/284 dead transitions. [2021-06-11 09:27:01,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 284 transitions, 2073 flow [2021-06-11 09:27:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-11 09:27:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-11 09:27:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 265 transitions. [2021-06-11 09:27:01,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.48534798534798534 [2021-06-11 09:27:01,594 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 265 transitions. [2021-06-11 09:27:01,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 265 transitions. [2021-06-11 09:27:01,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:01,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 265 transitions. [2021-06-11 09:27:01,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 18.928571428571427) internal successors, (265), 14 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:01,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 39.0) internal successors, (585), 15 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:01,595 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 39.0) internal successors, (585), 15 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:01,595 INFO L185 Difference]: Start difference. First operand has 51 places, 64 transitions, 361 flow. Second operand 14 states and 265 transitions. [2021-06-11 09:27:01,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 284 transitions, 2073 flow [2021-06-11 09:27:07,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 284 transitions, 2071 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-11 09:27:07,384 INFO L241 Difference]: Finished difference. Result has 73 places, 170 transitions, 1534 flow [2021-06-11 09:27:07,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1534, PETRI_PLACES=73, PETRI_TRANSITIONS=170} [2021-06-11 09:27:07,385 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2021-06-11 09:27:07,385 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:07,385 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 170 transitions, 1534 flow [2021-06-11 09:27:07,385 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 170 transitions, 1534 flow [2021-06-11 09:27:07,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 170 transitions, 1534 flow [2021-06-11 09:27:08,603 INFO L129 PetriNetUnfolder]: 8536/14495 cut-off events. [2021-06-11 09:27:08,603 INFO L130 PetriNetUnfolder]: For 41723/51854 co-relation queries the response was YES. [2021-06-11 09:27:08,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73211 conditions, 14495 events. 8536/14495 cut-off events. For 41723/51854 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 126264 event pairs, 2074 based on Foata normal form. 41/13734 useless extension candidates. Maximal degree in co-relation 73118. Up to 5026 conditions per place. [2021-06-11 09:27:08,801 INFO L151 LiptonReduction]: Number of co-enabled transitions 1646 [2021-06-11 09:27:08,815 INFO L163 LiptonReduction]: Checked pairs total: 6990 [2021-06-11 09:27:08,815 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:08,815 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1430 [2021-06-11 09:27:08,816 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 170 transitions, 1534 flow [2021-06-11 09:27:08,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:08,816 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:08,816 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:27:09,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-11 09:27:09,027 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash -701278519, now seen corresponding path program 1 times [2021-06-11 09:27:09,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:09,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825012459] [2021-06-11 09:27:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:09,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:09,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:09,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:27:09,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:27:09,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:27:09,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:27:09,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:09,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825012459] [2021-06-11 09:27:09,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584978201] [2021-06-11 09:27:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:27:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-11 09:27:09,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:27:09,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:09,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:27:09,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:27:09,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:27:09,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:27:09,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:27:09,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:09,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:27:09,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:27:09,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:27:09,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:27:09,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:09,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:27:09,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:27:09,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:27:09,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:27:09,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:27:09,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:09,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:09,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:27:09,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-06-11 09:27:09,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986827266] [2021-06-11 09:27:09,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:27:09,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:09,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:27:09,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:27:09,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2021-06-11 09:27:09,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 170 transitions, 1534 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:09,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:09,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2021-06-11 09:27:09,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:44,343 INFO L129 PetriNetUnfolder]: 127980/190650 cut-off events. [2021-06-11 09:27:44,343 INFO L130 PetriNetUnfolder]: For 636720/636720 co-relation queries the response was YES. [2021-06-11 09:27:45,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 978919 conditions, 190650 events. 127980/190650 cut-off events. For 636720/636720 co-relation queries the response was YES. Maximal size of possible extension queue 10571. Compared 1662737 event pairs, 12632 based on Foata normal form. 2322/192972 useless extension candidates. Maximal degree in co-relation 975171. Up to 60868 conditions per place. [2021-06-11 09:27:46,210 INFO L132 encePairwiseOnDemand]: 20/39 looper letters, 647 selfloop transitions, 611 changer transitions 0/1258 dead transitions. [2021-06-11 09:27:46,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 1258 transitions, 12949 flow [2021-06-11 09:27:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-11 09:27:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-06-11 09:27:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1086 transitions. [2021-06-11 09:27:46,213 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.525399129172714 [2021-06-11 09:27:46,214 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 1086 transitions. [2021-06-11 09:27:46,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 1086 transitions. [2021-06-11 09:27:46,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:46,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 1086 transitions. [2021-06-11 09:27:46,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 20.49056603773585) internal successors, (1086), 53 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:46,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 39.0) internal successors, (2106), 54 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:46,220 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 39.0) internal successors, (2106), 54 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:46,220 INFO L185 Difference]: Start difference. First operand has 71 places, 170 transitions, 1534 flow. Second operand 53 states and 1086 transitions. [2021-06-11 09:27:46,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 1258 transitions, 12949 flow [2021-06-11 09:30:24,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 1258 transitions, 12865 flow, removed 42 selfloop flow, removed 1 redundant places. [2021-06-11 09:30:24,408 INFO L241 Difference]: Finished difference. Result has 153 places, 716 transitions, 8869 flow [2021-06-11 09:30:24,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=8869, PETRI_PLACES=153, PETRI_TRANSITIONS=716} [2021-06-11 09:30:24,409 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 119 predicate places. [2021-06-11 09:30:24,409 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:30:24,409 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 716 transitions, 8869 flow [2021-06-11 09:30:24,409 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 716 transitions, 8869 flow [2021-06-11 09:30:24,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 716 transitions, 8869 flow [2021-06-11 09:30:44,674 INFO L129 PetriNetUnfolder]: 51298/86040 cut-off events. [2021-06-11 09:30:44,675 INFO L130 PetriNetUnfolder]: For 1278112/1315506 co-relation queries the response was YES. [2021-06-11 09:30:45,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 651801 conditions, 86040 events. 51298/86040 cut-off events. For 1278112/1315506 co-relation queries the response was YES. Maximal size of possible extension queue 7753. Compared 888914 event pairs, 12648 based on Foata normal form. 3878/84637 useless extension candidates. Maximal degree in co-relation 604800. Up to 30952 conditions per place. [2021-06-11 09:30:47,338 INFO L151 LiptonReduction]: Number of co-enabled transitions 4954 [2021-06-11 09:30:47,504 INFO L163 LiptonReduction]: Checked pairs total: 157404 [2021-06-11 09:30:47,504 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:30:47,504 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23095 [2021-06-11 09:30:47,505 INFO L480 AbstractCegarLoop]: Abstraction has has 153 places, 716 transitions, 8869 flow [2021-06-11 09:30:47,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:30:47,505 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:30:47,505 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:30:47,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:30:47,721 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:30:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:30:47,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1537416515, now seen corresponding path program 2 times [2021-06-11 09:30:47,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:30:47,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293375012] [2021-06-11 09:30:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:30:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:30:47,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:30:47,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:30:47,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:30:47,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:30:47,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:30:47,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 09:30:47,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:30:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:30:47,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293375012] [2021-06-11 09:30:47,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449588674] [2021-06-11 09:30:47,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-11 09:30:47,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-11 09:30:47,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-11 09:30:47,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-11 09:30:47,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-11 09:30:47,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:30:47,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:30:47,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:30:47,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:30:47,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:30:47,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:30:47,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:30:47,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:30:47,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:30:47,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:30:47,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:30:47,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:30:47,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:30:47,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-11 09:30:47,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:30:47,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 09:30:47,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:30:47,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:30:47,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:30:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:30:47,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-11 09:30:47,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-06-11 09:30:47,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965623875] [2021-06-11 09:30:47,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-11 09:30:47,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:30:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-11 09:30:47,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-11 09:30:47,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2021-06-11 09:30:47,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 716 transitions, 8869 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:30:47,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:30:47,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2021-06-11 09:30:47,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:32:42,963 INFO L129 PetriNetUnfolder]: 211103/316948 cut-off events. [2021-06-11 09:32:42,963 INFO L130 PetriNetUnfolder]: For 4920366/4920366 co-relation queries the response was YES. [2021-06-11 09:32:47,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2496121 conditions, 316948 events. 211103/316948 cut-off events. For 4920366/4920366 co-relation queries the response was YES. Maximal size of possible extension queue 17990. Compared 2962815 event pairs, 27504 based on Foata normal form. 2190/319138 useless extension candidates. Maximal degree in co-relation 2255777. Up to 108496 conditions per place. [2021-06-11 09:32:49,536 INFO L132 encePairwiseOnDemand]: 20/39 looper letters, 672 selfloop transitions, 1440 changer transitions 15/2127 dead transitions. [2021-06-11 09:32:49,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 2127 transitions, 30683 flow [2021-06-11 09:32:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 09:32:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 09:32:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 603 transitions. [2021-06-11 09:32:49,539 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4987593052109181 [2021-06-11 09:32:49,539 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 603 transitions. [2021-06-11 09:32:49,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 603 transitions. [2021-06-11 09:32:49,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:32:49,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 603 transitions. [2021-06-11 09:32:49,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 19.451612903225808) internal successors, (603), 31 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:32:49,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 39.0) internal successors, (1248), 32 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:32:49,544 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 39.0) internal successors, (1248), 32 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:32:49,544 INFO L185 Difference]: Start difference. First operand has 153 places, 716 transitions, 8869 flow. Second operand 31 states and 603 transitions. [2021-06-11 09:32:49,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 2127 transitions, 30683 flow Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown