/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:55:27,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:55:27,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:55:27,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 03:55:27,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 03:55:27,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 03:55:27,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 03:55:27,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 03:55:27,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 03:55:27,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 03:55:27,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 03:55:27,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 03:55:27,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 03:55:27,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 03:55:27,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 03:55:27,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 03:55:27,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 03:55:27,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 03:55:27,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 03:55:27,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 03:55:27,940 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 03:55:27,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:55:28,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:55:28,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:55:28,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:55:28,005 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:55:28,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:55:28,006 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:55:28,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:55:28,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:55:28,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:55:28,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:55:28,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:55:28,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:55:28,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:55:28,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:55:28,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:55:28,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:55:28,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:55:28,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:55:28,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:55:28,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:55:28,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:55:28,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:55:28,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:55:28,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:55:28,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:55:28,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:55:28,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:55:28,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:55:28,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:55:28,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:55:28,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:55:28,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:55:28,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:55:28,499 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 03:55:28,500 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 03:55:28,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-04-29 03:55:28,501 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-04-29 03:55:28,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:55:28,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 03:55:28,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:55:28,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:55:28,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:55:28,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:55:28,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:55:28,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:55:28,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:55:28,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/1) ... [2021-04-29 03:55:28,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:55:28,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:55:28,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:55:28,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:55:28,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (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 [2021-04-29 03:55:28,808 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-04-29 03:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-04-29 03:55:28,811 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-04-29 03:55:28,818 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-04-29 03:55:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-04-29 03:55:28,818 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-04-29 03:55:28,819 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 03:55:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:55:28,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:55:28,819 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-04-29 03:55:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-04-29 03:55:28,819 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-04-29 03:55:28,820 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 03:55:29,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:55:29,162 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-04-29 03:55:29,164 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:55:29 BoogieIcfgContainer [2021-04-29 03:55:29,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:55:29,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:55:29,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:55:29,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:55:29,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:28" (1/2) ... [2021-04-29 03:55:29,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7034641e and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:55:29, skipping insertion in model container [2021-04-29 03:55:29,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:55:29" (2/2) ... [2021-04-29 03:55:29,183 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-04-29 03:55:29,192 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:55:29,198 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-29 03:55:29,199 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:55:29,233 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,234 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,235 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,235 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,236 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,236 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,236 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,237 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,239 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,239 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,240 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,241 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,241 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,242 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,242 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,242 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,250 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,253 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:55:29,256 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 03:55:29,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-04-29 03:55:29,313 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:55:29,313 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:55:29,313 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:55:29,313 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:55:29,313 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:55:29,313 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:55:29,314 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:55:29,314 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:55:29,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-04-29 03:55:29,404 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-04-29 03:55:29,405 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:29,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-04-29 03:55:29,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-04-29 03:55:29,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-04-29 03:55:29,423 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:29,450 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-04-29 03:55:29,457 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-04-29 03:55:29,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-04-29 03:55:29,489 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-04-29 03:55:29,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:29,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-04-29 03:55:29,496 INFO L146 LiptonReduction]: Number of co-enabled transitions 818 [2021-04-29 03:55:30,307 INFO L158 LiptonReduction]: Checked pairs total: 2824 [2021-04-29 03:55:30,307 INFO L160 LiptonReduction]: Total number of compositions: 13 [2021-04-29 03:55:30,316 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 895 [2021-04-29 03:55:30,345 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-04-29 03:55:30,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:30,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:30,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-04-29 03:55:30,347 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash 176978752, now seen corresponding path program 1 times [2021-04-29 03:55:30,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:30,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668926624] [2021-04-29 03:55:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:30,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:30,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668926624] [2021-04-29 03:55:30,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:30,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 03:55:30,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284403117] [2021-04-29 03:55:30,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:30,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:30,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:30,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 59 [2021-04-29 03:55:30,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:30,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 59 [2021-04-29 03:55:30,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:30,677 INFO L129 PetriNetUnfolder]: 31/134 cut-off events. [2021-04-29 03:55:30,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:30,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 134 events. 31/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 537 event pairs, 4 based on Foata normal form. 41/137 useless extension candidates. Maximal degree in co-relation 177. Up to 33 conditions per place. [2021-04-29 03:55:30,681 INFO L132 encePairwiseOnDemand]: 41/59 looper letters, 8 selfloop transitions, 7 changer transitions 3/43 dead transitions. [2021-04-29 03:55:30,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 131 flow [2021-04-29 03:55:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-04-29 03:55:30,698 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8757062146892656 [2021-04-29 03:55:30,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-04-29 03:55:30,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-04-29 03:55:30,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:30,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-04-29 03:55:30,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,716 INFO L185 Difference]: Start difference. First operand has 48 places, 43 transitions, 95 flow. Second operand 3 states and 155 transitions. [2021-04-29 03:55:30,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 131 flow [2021-04-29 03:55:30,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 03:55:30,723 INFO L241 Difference]: Finished difference. Result has 43 places, 40 transitions, 130 flow [2021-04-29 03:55:30,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2021-04-29 03:55:30,727 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2021-04-29 03:55:30,727 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:30,727 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 40 transitions, 130 flow [2021-04-29 03:55:30,728 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 40 transitions, 130 flow [2021-04-29 03:55:30,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 130 flow [2021-04-29 03:55:30,745 INFO L129 PetriNetUnfolder]: 31/122 cut-off events. [2021-04-29 03:55:30,746 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-04-29 03:55:30,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 122 events. 31/122 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 461 event pairs, 3 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 191. Up to 30 conditions per place. [2021-04-29 03:55:30,749 INFO L146 LiptonReduction]: Number of co-enabled transitions 528 [2021-04-29 03:55:30,760 INFO L158 LiptonReduction]: Checked pairs total: 396 [2021-04-29 03:55:30,760 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:30,760 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-04-29 03:55:30,763 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2021-04-29 03:55:30,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:30,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:30,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:55:30,764 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:30,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1381575724, now seen corresponding path program 1 times [2021-04-29 03:55:30,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:30,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519047231] [2021-04-29 03:55:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:30,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:30,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:30,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:30,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:30,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519047231] [2021-04-29 03:55:30,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:30,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:30,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004077674] [2021-04-29 03:55:30,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:30,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:30,796 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 59 [2021-04-29 03:55:30,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:30,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 59 [2021-04-29 03:55:30,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:30,896 INFO L129 PetriNetUnfolder]: 146/380 cut-off events. [2021-04-29 03:55:30,896 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-04-29 03:55:30,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 380 events. 146/380 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2031 event pairs, 22 based on Foata normal form. 7/294 useless extension candidates. Maximal degree in co-relation 775. Up to 189 conditions per place. [2021-04-29 03:55:30,904 INFO L132 encePairwiseOnDemand]: 47/59 looper letters, 18 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2021-04-29 03:55:30,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 210 flow [2021-04-29 03:55:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-04-29 03:55:30,907 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2021-04-29 03:55:30,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-04-29 03:55:30,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-04-29 03:55:30,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:30,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-04-29 03:55:30,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:30,911 INFO L185 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 3 states and 135 transitions. [2021-04-29 03:55:30,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 210 flow [2021-04-29 03:55:30,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:30,917 INFO L241 Difference]: Finished difference. Result has 42 places, 48 transitions, 192 flow [2021-04-29 03:55:30,917 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=42, PETRI_TRANSITIONS=48} [2021-04-29 03:55:30,918 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2021-04-29 03:55:30,918 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:30,918 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 48 transitions, 192 flow [2021-04-29 03:55:30,919 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 48 transitions, 192 flow [2021-04-29 03:55:30,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 48 transitions, 192 flow [2021-04-29 03:55:30,954 INFO L129 PetriNetUnfolder]: 102/318 cut-off events. [2021-04-29 03:55:30,954 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-04-29 03:55:30,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 318 events. 102/318 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1783 event pairs, 12 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 616. Up to 122 conditions per place. [2021-04-29 03:55:30,963 INFO L146 LiptonReduction]: Number of co-enabled transitions 570 [2021-04-29 03:55:31,001 INFO L158 LiptonReduction]: Checked pairs total: 208 [2021-04-29 03:55:31,002 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:31,002 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-04-29 03:55:31,004 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 192 flow [2021-04-29 03:55:31,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,005 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:31,005 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:31,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:55:31,006 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash -770400184, now seen corresponding path program 2 times [2021-04-29 03:55:31,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:31,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323935742] [2021-04-29 03:55:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:31,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:31,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:31,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323935742] [2021-04-29 03:55:31,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:31,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:31,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502785115] [2021-04-29 03:55:31,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:31,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:31,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:31,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:31,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 59 [2021-04-29 03:55:31,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 48 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:31,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 59 [2021-04-29 03:55:31,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:31,126 INFO L129 PetriNetUnfolder]: 134/375 cut-off events. [2021-04-29 03:55:31,127 INFO L130 PetriNetUnfolder]: For 117/143 co-relation queries the response was YES. [2021-04-29 03:55:31,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 375 events. 134/375 cut-off events. For 117/143 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1907 event pairs, 32 based on Foata normal form. 15/315 useless extension candidates. Maximal degree in co-relation 909. Up to 188 conditions per place. [2021-04-29 03:55:31,134 INFO L132 encePairwiseOnDemand]: 49/59 looper letters, 18 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2021-04-29 03:55:31,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 240 flow [2021-04-29 03:55:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-04-29 03:55:31,137 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2021-04-29 03:55:31,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-04-29 03:55:31,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-04-29 03:55:31,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:31,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-04-29 03:55:31,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,140 INFO L185 Difference]: Start difference. First operand has 42 places, 48 transitions, 192 flow. Second operand 3 states and 130 transitions. [2021-04-29 03:55:31,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 240 flow [2021-04-29 03:55:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:31,145 INFO L241 Difference]: Finished difference. Result has 43 places, 47 transitions, 193 flow [2021-04-29 03:55:31,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2021-04-29 03:55:31,146 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2021-04-29 03:55:31,146 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:31,146 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 47 transitions, 193 flow [2021-04-29 03:55:31,146 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 47 transitions, 193 flow [2021-04-29 03:55:31,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 47 transitions, 193 flow [2021-04-29 03:55:31,182 INFO L129 PetriNetUnfolder]: 85/282 cut-off events. [2021-04-29 03:55:31,182 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2021-04-29 03:55:31,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 282 events. 85/282 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1421 event pairs, 8 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 563. Up to 102 conditions per place. [2021-04-29 03:55:31,190 INFO L146 LiptonReduction]: Number of co-enabled transitions 536 [2021-04-29 03:55:31,215 INFO L158 LiptonReduction]: Checked pairs total: 182 [2021-04-29 03:55:31,215 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:31,216 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 70 [2021-04-29 03:55:31,218 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 193 flow [2021-04-29 03:55:31,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:31,219 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:31,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 03:55:31,219 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:31,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1513297944, now seen corresponding path program 1 times [2021-04-29 03:55:31,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:31,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240516342] [2021-04-29 03:55:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:31,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:31,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:31,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240516342] [2021-04-29 03:55:31,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:31,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:31,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316108916] [2021-04-29 03:55:31,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:31,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:31,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:31,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:31,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 59 [2021-04-29 03:55:31,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:31,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 59 [2021-04-29 03:55:31,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:31,349 INFO L129 PetriNetUnfolder]: 146/422 cut-off events. [2021-04-29 03:55:31,349 INFO L130 PetriNetUnfolder]: For 151/171 co-relation queries the response was YES. [2021-04-29 03:55:31,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 422 events. 146/422 cut-off events. For 151/171 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2224 event pairs, 24 based on Foata normal form. 6/344 useless extension candidates. Maximal degree in co-relation 1060. Up to 141 conditions per place. [2021-04-29 03:55:31,357 INFO L132 encePairwiseOnDemand]: 49/59 looper letters, 20 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2021-04-29 03:55:31,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 291 flow [2021-04-29 03:55:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2021-04-29 03:55:31,360 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.751412429378531 [2021-04-29 03:55:31,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2021-04-29 03:55:31,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2021-04-29 03:55:31,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:31,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2021-04-29 03:55:31,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,363 INFO L185 Difference]: Start difference. First operand has 43 places, 47 transitions, 193 flow. Second operand 3 states and 133 transitions. [2021-04-29 03:55:31,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 291 flow [2021-04-29 03:55:31,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:31,369 INFO L241 Difference]: Finished difference. Result has 46 places, 52 transitions, 270 flow [2021-04-29 03:55:31,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=46, PETRI_TRANSITIONS=52} [2021-04-29 03:55:31,370 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2021-04-29 03:55:31,370 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:31,370 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 52 transitions, 270 flow [2021-04-29 03:55:31,370 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 52 transitions, 270 flow [2021-04-29 03:55:31,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 52 transitions, 270 flow [2021-04-29 03:55:31,411 INFO L129 PetriNetUnfolder]: 92/322 cut-off events. [2021-04-29 03:55:31,412 INFO L130 PetriNetUnfolder]: For 210/220 co-relation queries the response was YES. [2021-04-29 03:55:31,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 322 events. 92/322 cut-off events. For 210/220 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1688 event pairs, 8 based on Foata normal form. 1/269 useless extension candidates. Maximal degree in co-relation 823. Up to 112 conditions per place. [2021-04-29 03:55:31,420 INFO L146 LiptonReduction]: Number of co-enabled transitions 584 [2021-04-29 03:55:31,464 INFO L158 LiptonReduction]: Checked pairs total: 211 [2021-04-29 03:55:31,464 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:31,464 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-04-29 03:55:31,467 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 52 transitions, 270 flow [2021-04-29 03:55:31,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:31,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:31,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 03:55:31,468 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:31,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2085259038, now seen corresponding path program 2 times [2021-04-29 03:55:31,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:31,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857864802] [2021-04-29 03:55:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:31,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:31,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:31,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857864802] [2021-04-29 03:55:31,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:31,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:31,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319674994] [2021-04-29 03:55:31,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:31,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:31,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:31,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 59 [2021-04-29 03:55:31,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:31,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 59 [2021-04-29 03:55:31,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:31,594 INFO L129 PetriNetUnfolder]: 131/401 cut-off events. [2021-04-29 03:55:31,595 INFO L130 PetriNetUnfolder]: For 478/514 co-relation queries the response was YES. [2021-04-29 03:55:31,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 401 events. 131/401 cut-off events. For 478/514 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1995 event pairs, 24 based on Foata normal form. 19/333 useless extension candidates. Maximal degree in co-relation 1193. Up to 128 conditions per place. [2021-04-29 03:55:31,602 INFO L132 encePairwiseOnDemand]: 49/59 looper letters, 20 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2021-04-29 03:55:31,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 54 transitions, 322 flow [2021-04-29 03:55:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-04-29 03:55:31,604 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2021-04-29 03:55:31,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-04-29 03:55:31,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-04-29 03:55:31,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:31,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-04-29 03:55:31,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,607 INFO L185 Difference]: Start difference. First operand has 46 places, 52 transitions, 270 flow. Second operand 3 states and 135 transitions. [2021-04-29 03:55:31,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 54 transitions, 322 flow [2021-04-29 03:55:31,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:31,613 INFO L241 Difference]: Finished difference. Result has 46 places, 50 transitions, 254 flow [2021-04-29 03:55:31,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2021-04-29 03:55:31,614 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2021-04-29 03:55:31,614 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:31,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 50 transitions, 254 flow [2021-04-29 03:55:31,614 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 50 transitions, 254 flow [2021-04-29 03:55:31,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 50 transitions, 254 flow [2021-04-29 03:55:31,652 INFO L129 PetriNetUnfolder]: 80/310 cut-off events. [2021-04-29 03:55:31,652 INFO L130 PetriNetUnfolder]: For 197/208 co-relation queries the response was YES. [2021-04-29 03:55:31,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 310 events. 80/310 cut-off events. For 197/208 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1530 event pairs, 8 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 775. Up to 100 conditions per place. [2021-04-29 03:55:31,660 INFO L146 LiptonReduction]: Number of co-enabled transitions 554 [2021-04-29 03:55:31,687 INFO L158 LiptonReduction]: Checked pairs total: 185 [2021-04-29 03:55:31,687 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:31,687 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 73 [2021-04-29 03:55:31,689 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 254 flow [2021-04-29 03:55:31,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:31,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:31,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 03:55:31,690 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1518095080, now seen corresponding path program 1 times [2021-04-29 03:55:31,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:31,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385414251] [2021-04-29 03:55:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:31,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:31,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:31,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385414251] [2021-04-29 03:55:31,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:31,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:31,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070780090] [2021-04-29 03:55:31,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 03:55:31,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:31,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 03:55:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 03:55:31,730 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2021-04-29 03:55:31,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:31,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2021-04-29 03:55:31,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:31,850 INFO L129 PetriNetUnfolder]: 251/564 cut-off events. [2021-04-29 03:55:31,850 INFO L130 PetriNetUnfolder]: For 385/401 co-relation queries the response was YES. [2021-04-29 03:55:31,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 564 events. 251/564 cut-off events. For 385/401 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2491 event pairs, 36 based on Foata normal form. 31/577 useless extension candidates. Maximal degree in co-relation 1457. Up to 288 conditions per place. [2021-04-29 03:55:31,858 INFO L132 encePairwiseOnDemand]: 54/59 looper letters, 19 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2021-04-29 03:55:31,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 328 flow [2021-04-29 03:55:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 03:55:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 03:55:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2021-04-29 03:55:31,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.597457627118644 [2021-04-29 03:55:31,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2021-04-29 03:55:31,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2021-04-29 03:55:31,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:31,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2021-04-29 03:55:31,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,863 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,863 INFO L185 Difference]: Start difference. First operand has 46 places, 50 transitions, 254 flow. Second operand 4 states and 141 transitions. [2021-04-29 03:55:31,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 328 flow [2021-04-29 03:55:31,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:31,868 INFO L241 Difference]: Finished difference. Result has 49 places, 51 transitions, 260 flow [2021-04-29 03:55:31,869 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2021-04-29 03:55:31,869 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2021-04-29 03:55:31,869 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:31,869 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 260 flow [2021-04-29 03:55:31,870 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 51 transitions, 260 flow [2021-04-29 03:55:31,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 260 flow [2021-04-29 03:55:31,913 INFO L129 PetriNetUnfolder]: 109/349 cut-off events. [2021-04-29 03:55:31,913 INFO L130 PetriNetUnfolder]: For 150/161 co-relation queries the response was YES. [2021-04-29 03:55:31,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 349 events. 109/349 cut-off events. For 150/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1629 event pairs, 8 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 858. Up to 100 conditions per place. [2021-04-29 03:55:31,922 INFO L146 LiptonReduction]: Number of co-enabled transitions 584 [2021-04-29 03:55:31,951 INFO L158 LiptonReduction]: Checked pairs total: 133 [2021-04-29 03:55:31,951 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:31,951 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 82 [2021-04-29 03:55:31,953 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 260 flow [2021-04-29 03:55:31,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:31,954 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:31,954 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:31,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 03:55:31,954 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:31,955 INFO L82 PathProgramCache]: Analyzing trace with hash 186085883, now seen corresponding path program 1 times [2021-04-29 03:55:31,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:31,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710280269] [2021-04-29 03:55:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:31,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:31,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 03:55:31,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:31,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:32,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:32,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:32,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710280269] [2021-04-29 03:55:32,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:32,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:55:32,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960354337] [2021-04-29 03:55:32,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 03:55:32,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 03:55:32,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-29 03:55:32,019 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2021-04-29 03:55:32,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:32,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2021-04-29 03:55:32,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:32,264 INFO L129 PetriNetUnfolder]: 266/620 cut-off events. [2021-04-29 03:55:32,265 INFO L130 PetriNetUnfolder]: For 507/532 co-relation queries the response was YES. [2021-04-29 03:55:32,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 620 events. 266/620 cut-off events. For 507/532 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2797 event pairs, 30 based on Foata normal form. 11/619 useless extension candidates. Maximal degree in co-relation 1788. Up to 201 conditions per place. [2021-04-29 03:55:32,272 INFO L132 encePairwiseOnDemand]: 50/59 looper letters, 18 selfloop transitions, 3 changer transitions 22/77 dead transitions. [2021-04-29 03:55:32,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 476 flow [2021-04-29 03:55:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:55:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:55:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2021-04-29 03:55:32,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5786924939467313 [2021-04-29 03:55:32,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 239 transitions. [2021-04-29 03:55:32,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 239 transitions. [2021-04-29 03:55:32,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:32,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 239 transitions. [2021-04-29 03:55:32,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,280 INFO L185 Difference]: Start difference. First operand has 49 places, 51 transitions, 260 flow. Second operand 7 states and 239 transitions. [2021-04-29 03:55:32,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 476 flow [2021-04-29 03:55:32,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 459 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-04-29 03:55:32,286 INFO L241 Difference]: Finished difference. Result has 57 places, 51 transitions, 282 flow [2021-04-29 03:55:32,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2021-04-29 03:55:32,286 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2021-04-29 03:55:32,287 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:32,287 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 51 transitions, 282 flow [2021-04-29 03:55:32,287 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 51 transitions, 282 flow [2021-04-29 03:55:32,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 282 flow [2021-04-29 03:55:32,343 INFO L129 PetriNetUnfolder]: 102/352 cut-off events. [2021-04-29 03:55:32,343 INFO L130 PetriNetUnfolder]: For 299/300 co-relation queries the response was YES. [2021-04-29 03:55:32,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 352 events. 102/352 cut-off events. For 299/300 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1550 event pairs, 11 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 948. Up to 103 conditions per place. [2021-04-29 03:55:32,366 INFO L146 LiptonReduction]: Number of co-enabled transitions 544 [2021-04-29 03:55:32,392 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:32,393 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:32,393 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-04-29 03:55:32,394 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 282 flow [2021-04-29 03:55:32,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:32,395 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:32,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 03:55:32,395 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2045404939, now seen corresponding path program 2 times [2021-04-29 03:55:32,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:32,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96344372] [2021-04-29 03:55:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:32,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:32,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:32,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:32,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96344372] [2021-04-29 03:55:32,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:32,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:32,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776589727] [2021-04-29 03:55:32,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 03:55:32,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:32,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 03:55:32,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 03:55:32,434 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2021-04-29 03:55:32,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:32,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2021-04-29 03:55:32,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:32,545 INFO L129 PetriNetUnfolder]: 218/520 cut-off events. [2021-04-29 03:55:32,546 INFO L130 PetriNetUnfolder]: For 622/629 co-relation queries the response was YES. [2021-04-29 03:55:32,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 520 events. 218/520 cut-off events. For 622/629 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2116 event pairs, 37 based on Foata normal form. 30/537 useless extension candidates. Maximal degree in co-relation 1598. Up to 277 conditions per place. [2021-04-29 03:55:32,553 INFO L132 encePairwiseOnDemand]: 54/59 looper letters, 15 selfloop transitions, 3 changer transitions 5/58 dead transitions. [2021-04-29 03:55:32,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 367 flow [2021-04-29 03:55:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 03:55:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 03:55:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2021-04-29 03:55:32,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2021-04-29 03:55:32,555 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 140 transitions. [2021-04-29 03:55:32,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 140 transitions. [2021-04-29 03:55:32,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:32,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 140 transitions. [2021-04-29 03:55:32,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,557 INFO L185 Difference]: Start difference. First operand has 54 places, 51 transitions, 282 flow. Second operand 4 states and 140 transitions. [2021-04-29 03:55:32,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 367 flow [2021-04-29 03:55:32,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 343 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-04-29 03:55:32,564 INFO L241 Difference]: Finished difference. Result has 53 places, 52 transitions, 284 flow [2021-04-29 03:55:32,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2021-04-29 03:55:32,564 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2021-04-29 03:55:32,565 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:32,565 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 52 transitions, 284 flow [2021-04-29 03:55:32,565 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 52 transitions, 284 flow [2021-04-29 03:55:32,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 52 transitions, 284 flow [2021-04-29 03:55:32,616 INFO L129 PetriNetUnfolder]: 143/423 cut-off events. [2021-04-29 03:55:32,616 INFO L130 PetriNetUnfolder]: For 269/270 co-relation queries the response was YES. [2021-04-29 03:55:32,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 423 events. 143/423 cut-off events. For 269/270 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1816 event pairs, 14 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 1162. Up to 110 conditions per place. [2021-04-29 03:55:32,628 INFO L146 LiptonReduction]: Number of co-enabled transitions 558 [2021-04-29 03:55:32,691 INFO L158 LiptonReduction]: Checked pairs total: 36 [2021-04-29 03:55:32,691 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:32,691 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 126 [2021-04-29 03:55:32,693 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 284 flow [2021-04-29 03:55:32,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:32,694 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:32,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 03:55:32,694 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:55:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 360888984, now seen corresponding path program 3 times [2021-04-29 03:55:32,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:32,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252286483] [2021-04-29 03:55:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:32,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:32,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 03:55:32,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:32,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:55:32,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:32,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:32,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252286483] [2021-04-29 03:55:32,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:32,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:55:32,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140994523] [2021-04-29 03:55:32,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 03:55:32,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:32,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 03:55:32,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-29 03:55:32,751 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2021-04-29 03:55:32,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:32,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2021-04-29 03:55:32,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:32,945 INFO L129 PetriNetUnfolder]: 149/358 cut-off events. [2021-04-29 03:55:32,945 INFO L130 PetriNetUnfolder]: For 459/465 co-relation queries the response was YES. [2021-04-29 03:55:32,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 358 events. 149/358 cut-off events. For 459/465 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1418 event pairs, 18 based on Foata normal form. 10/365 useless extension candidates. Maximal degree in co-relation 1230. Up to 138 conditions per place. [2021-04-29 03:55:32,948 INFO L132 encePairwiseOnDemand]: 50/59 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2021-04-29 03:55:32,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 462 flow [2021-04-29 03:55:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:55:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:55:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2021-04-29 03:55:32,951 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5786924939467313 [2021-04-29 03:55:32,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 239 transitions. [2021-04-29 03:55:32,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 239 transitions. [2021-04-29 03:55:32,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:32,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 239 transitions. [2021-04-29 03:55:32,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,955 INFO L185 Difference]: Start difference. First operand has 53 places, 52 transitions, 284 flow. Second operand 7 states and 239 transitions. [2021-04-29 03:55:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 462 flow [2021-04-29 03:55:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 429 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-04-29 03:55:32,960 INFO L241 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2021-04-29 03:55:32,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2021-04-29 03:55:32,960 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2021-04-29 03:55:32,961 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:32,961 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 0 transitions, 0 flow [2021-04-29 03:55:32,961 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 0 transitions, 0 flow [2021-04-29 03:55:32,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 03:55:32,962 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 03:55:32,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:32,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 03:55:32,962 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:55:32,962 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:32,962 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:32,962 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-04-29 03:55:32,964 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 03:55:32,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:32,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 03:55:32,969 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:55:32 BasicIcfg [2021-04-29 03:55:32,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:55:32,971 INFO L168 Benchmark]: Toolchain (without parser) took 4434.29 ms. Allocated memory was 302.0 MB in the beginning and 388.0 MB in the end (delta: 86.0 MB). Free memory was 270.7 MB in the beginning and 277.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:32,971 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:55:32,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.93 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 283.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:32,972 INFO L168 Benchmark]: Boogie Preprocessor took 27.49 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:55:32,973 INFO L168 Benchmark]: RCFGBuilder took 488.77 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 276.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:32,973 INFO L168 Benchmark]: TraceAbstraction took 3800.72 ms. Allocated memory was 302.0 MB in the beginning and 388.0 MB in the end (delta: 86.0 MB). Free memory was 276.3 MB in the beginning and 277.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.0 GB. [2021-04-29 03:55:32,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.93 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 283.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.49 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 488.77 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 276.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3800.72 ms. Allocated memory was 302.0 MB in the beginning and 388.0 MB in the end (delta: 86.0 MB). Free memory was 276.3 MB in the beginning and 277.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 850.6ms, 48 PlacesBefore, 48 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 4 FixpointIterations, 4 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 2824 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1573, positive: 1445, positive conditional: 1445, positive unconditional: 0, negative: 128, negative conditional: 128, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 548, positive: 513, positive conditional: 0, positive unconditional: 513, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 548, positive: 513, positive conditional: 0, positive unconditional: 513, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 548, positive: 485, positive conditional: 0, positive unconditional: 485, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 331, positive: 145, positive conditional: 0, positive unconditional: 145, negative: 186, negative conditional: 0, negative unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1573, positive: 932, positive conditional: 932, positive unconditional: 0, negative: 93, negative conditional: 93, negative unconditional: 0, unknown: 548, unknown conditional: 548, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 548, Positive cache size: 513, Positive conditional cache size: 513, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.8ms, 43 PlacesBefore, 40 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 396 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 239, positive: 215, positive conditional: 215, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 51, positive: 51, positive conditional: 12, positive unconditional: 39, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 51, positive: 51, positive conditional: 12, positive unconditional: 39, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 51, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 239, positive: 164, positive conditional: 164, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 51, unknown conditional: 51, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 599, Positive cache size: 564, Positive conditional cache size: 564, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 83.5ms, 42 PlacesBefore, 42 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 570 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 208 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 191, positive: 180, positive conditional: 180, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 58, positive: 58, positive conditional: 3, positive unconditional: 55, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 58, positive: 58, positive conditional: 3, positive unconditional: 55, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 58, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 1, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 28, positive: 28, positive conditional: 8, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 191, positive: 122, positive conditional: 122, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 58, unknown conditional: 58, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 657, Positive cache size: 622, Positive conditional cache size: 622, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 69.0ms, 43 PlacesBefore, 43 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 536 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 182 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 167, positive: 157, positive conditional: 157, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 7, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 7, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, positive: 13, positive conditional: 6, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 167, positive: 141, positive conditional: 141, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 673, Positive cache size: 638, Positive conditional cache size: 638, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 94.0ms, 46 PlacesBefore, 46 PlacesAfterwards, 52 TransitionsBefore, 52 TransitionsAfterwards, 584 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 211 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 196, positive: 185, positive conditional: 185, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 41, positive: 41, positive conditional: 12, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 41, positive: 41, positive conditional: 12, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 41, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 2, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 33, positive conditional: 14, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 196, positive: 144, positive conditional: 144, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 41, unknown conditional: 41, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 714, Positive cache size: 679, Positive conditional cache size: 679, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 72.6ms, 46 PlacesBefore, 46 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 554 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 185 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 165, positive: 155, positive conditional: 155, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 11, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 11, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, positive: 16, positive conditional: 13, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 165, positive: 135, positive conditional: 135, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 734, Positive cache size: 699, Positive conditional cache size: 699, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 81.5ms, 49 PlacesBefore, 49 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 584 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 133 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 740, Positive cache size: 701, Positive conditional cache size: 701, Positive unconditional cache size: 0, Negative cache size: 39, Negative conditional cache size: 39, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 105.4ms, 57 PlacesBefore, 54 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 544 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 740, Positive cache size: 701, Positive conditional cache size: 701, Positive unconditional cache size: 0, Negative cache size: 39, Negative conditional cache size: 39, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 126.1ms, 53 PlacesBefore, 53 PlacesAfterwards, 52 TransitionsBefore, 52 TransitionsAfterwards, 558 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 36 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 751, Positive cache size: 711, Positive conditional cache size: 711, Positive unconditional cache size: 0, Negative cache size: 40, Negative conditional cache size: 40, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 53 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 751, Positive cache size: 711, Positive conditional cache size: 711, Positive unconditional cache size: 0, Negative cache size: 40, Negative conditional cache size: 40, Negative unconditional cache size: 0 - PositiveResult [Line: 78]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 57]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3658.5ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 1368.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1018.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 123 SDtfs, 82 SDslu, 9 SDs, 0 SdLazy, 274 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 312.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 188.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=8, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.4ms SsaConstructionTime, 72.0ms SatisfiabilityAnalysisTime, 264.9ms InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 298 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...