/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-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:35:26,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:35:26,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:35:26,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 03:35:26,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:35:26,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:35:26,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:35:26,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:35:26,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:35:26,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:35:26,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:35:26,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:35:26,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:35:26,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:35:26,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:35:26,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:35:26,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:35:26,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:35:26,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:35:26,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:35:26,282 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 [2021-03-26 03:35:26,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:35:26,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:35:26,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:35:26,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:35:26,319 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:35:26,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:35:26,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:35:26,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:35:26,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:35:26,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:35:26,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:35:26,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:35:26,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:35:26,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:35:26,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:35:26,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:35:26,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:35:26,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:35:26,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:35:26,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:35:26,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:35:26,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:35:26,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:35:26,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:35:26,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:35:26,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:35:26,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:35:26,324 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:35:26,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:35:26,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:35:26,324 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:35:26,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:35:26,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:35:26,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:35:26,682 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:35:26,683 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:35:26,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-03-26 03:35:26,685 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-03-26 03:35:26,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:35:26,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:35:26,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:35:26,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:35:26,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:35:26,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:35:26,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:35:26,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:35:26,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:35:26,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... [2021-03-26 03:35:26,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:35:26,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:35:26,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:35:26,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:35:26,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:35:26,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-26 03:35:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-26 03:35:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-26 03:35:26,840 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-26 03:35:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-26 03:35:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-26 03:35:26,840 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:35:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:35:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:35:26,841 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-26 03:35:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-26 03:35:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-26 03:35:26,842 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:35:26,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:35:26,988 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-26 03:35:26,989 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:35:26 BoogieIcfgContainer [2021-03-26 03:35:26,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:35:26,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:35:26,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:35:26,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:35:26,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:35:26" (1/2) ... [2021-03-26 03:35:26,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e579d2 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:35:26, skipping insertion in model container [2021-03-26 03:35:26,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:35:26" (2/2) ... [2021-03-26 03:35:26,996 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-03-26 03:35:27,000 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:35:27,003 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-26 03:35:27,004 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:35:27,031 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,031 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,032 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,034 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,034 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,034 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,034 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,034 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,036 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,036 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,040 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,041 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,041 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,041 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,042 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,042 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,059 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,061 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:35:27,062 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:35:27,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-26 03:35:27,108 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:35:27,115 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:35:27,127 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:35:27,128 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:35:27,128 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:35:27,128 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:35:27,128 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:35:27,128 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:35:27,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-26 03:35:27,162 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-26 03:35:27,163 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:27,167 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. [2021-03-26 03:35:27,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-26 03:35:27,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-26 03:35:27,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:27,188 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-26 03:35:27,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-26 03:35:27,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-26 03:35:27,205 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-26 03:35:27,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:27,207 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. [2021-03-26 03:35:27,211 INFO L142 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-26 03:35:27,568 INFO L154 LiptonReduction]: Checked pairs total: 1066 [2021-03-26 03:35:27,568 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-26 03:35:27,570 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 398 [2021-03-26 03:35:27,580 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-26 03:35:27,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:27,581 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:27,581 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 03:35:27,582 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1098058064, now seen corresponding path program 1 times [2021-03-26 03:35:27,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:27,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952256788] [2021-03-26 03:35:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:27,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:27,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952256788] [2021-03-26 03:35:27,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:27,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:35:27,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730587895] [2021-03-26 03:35:27,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:27,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:27,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:27,717 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 57 [2021-03-26 03:35:27,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 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) [2021-03-26 03:35:27,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:27,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 57 [2021-03-26 03:35:27,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:27,758 INFO L129 PetriNetUnfolder]: 31/108 cut-off events. [2021-03-26 03:35:27,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:27,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 108 events. 31/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 361 event pairs, 4 based on Foata normal form. 41/138 useless extension candidates. Maximal degree in co-relation 153. Up to 30 conditions per place. [2021-03-26 03:35:27,761 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 8 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2021-03-26 03:35:27,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 109 flow [2021-03-26 03:35:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-26 03:35:27,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2021-03-26 03:35:27,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-26 03:35:27,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-26 03:35:27,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:27,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-26 03:35:27,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,783 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 3 states and 146 transitions. [2021-03-26 03:35:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 109 flow [2021-03-26 03:35:27,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 03:35:27,788 INFO L241 Difference]: Finished difference. Result has 35 places, 35 transitions, 120 flow [2021-03-26 03:35:27,789 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2021-03-26 03:35:27,790 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-03-26 03:35:27,790 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:27,790 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 35 transitions, 120 flow [2021-03-26 03:35:27,791 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 35 transitions, 120 flow [2021-03-26 03:35:27,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 120 flow [2021-03-26 03:35:27,802 INFO L129 PetriNetUnfolder]: 31/102 cut-off events. [2021-03-26 03:35:27,803 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 03:35:27,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 102 events. 31/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 332 event pairs, 2 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 170. Up to 30 conditions per place. [2021-03-26 03:35:27,805 INFO L142 LiptonReduction]: Number of co-enabled transitions 348 [2021-03-26 03:35:27,840 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-26 03:35:27,840 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 03:35:27,841 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-03-26 03:35:27,842 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 118 flow [2021-03-26 03:35:27,842 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) [2021-03-26 03:35:27,843 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:27,843 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:27,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:35:27,843 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:27,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:27,844 INFO L82 PathProgramCache]: Analyzing trace with hash -747120156, now seen corresponding path program 1 times [2021-03-26 03:35:27,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:27,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34672902] [2021-03-26 03:35:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:27,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:27,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:27,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:27,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34672902] [2021-03-26 03:35:27,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:27,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:35:27,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912538074] [2021-03-26 03:35:27,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:27,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:27,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:27,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:27,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-26 03:35:27,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:27,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-26 03:35:27,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:27,918 INFO L129 PetriNetUnfolder]: 98/248 cut-off events. [2021-03-26 03:35:27,918 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 03:35:27,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 248 events. 98/248 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1096 event pairs, 13 based on Foata normal form. 5/229 useless extension candidates. Maximal degree in co-relation 528. Up to 115 conditions per place. [2021-03-26 03:35:27,921 INFO L132 encePairwiseOnDemand]: 48/58 looper letters, 13 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2021-03-26 03:35:27,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 178 flow [2021-03-26 03:35:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-26 03:35:27,923 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7183908045977011 [2021-03-26 03:35:27,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-26 03:35:27,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-26 03:35:27,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:27,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-26 03:35:27,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2021-03-26 03:35:27,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,926 INFO L185 Difference]: Start difference. First operand has 34 places, 34 transitions, 118 flow. Second operand 3 states and 125 transitions. [2021-03-26 03:35:27,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 178 flow [2021-03-26 03:35:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 03:35:27,929 INFO L241 Difference]: Finished difference. Result has 36 places, 41 transitions, 168 flow [2021-03-26 03:35:27,929 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=36, PETRI_TRANSITIONS=41} [2021-03-26 03:35:27,930 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2021-03-26 03:35:27,930 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:27,930 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 41 transitions, 168 flow [2021-03-26 03:35:27,930 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 41 transitions, 168 flow [2021-03-26 03:35:27,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 41 transitions, 168 flow [2021-03-26 03:35:27,945 INFO L129 PetriNetUnfolder]: 88/234 cut-off events. [2021-03-26 03:35:27,946 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-03-26 03:35:27,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 234 events. 88/234 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1075 event pairs, 5 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 469. Up to 93 conditions per place. [2021-03-26 03:35:27,949 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-26 03:35:27,956 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-26 03:35:27,956 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:27,956 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-26 03:35:27,957 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 41 transitions, 168 flow [2021-03-26 03:35:27,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,957 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:27,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:27,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:35:27,958 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1037054279, now seen corresponding path program 1 times [2021-03-26 03:35:27,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:27,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432942686] [2021-03-26 03:35:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:27,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:27,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:27,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:27,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432942686] [2021-03-26 03:35:27,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:27,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:35:27,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553677112] [2021-03-26 03:35:27,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:27,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:27,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-26 03:35:27,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:27,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:27,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-26 03:35:27,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,014 INFO L129 PetriNetUnfolder]: 90/244 cut-off events. [2021-03-26 03:35:28,014 INFO L130 PetriNetUnfolder]: For 91/110 co-relation queries the response was YES. [2021-03-26 03:35:28,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 244 events. 90/244 cut-off events. For 91/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 999 event pairs, 17 based on Foata normal form. 12/242 useless extension candidates. Maximal degree in co-relation 598. Up to 110 conditions per place. [2021-03-26 03:35:28,017 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2021-03-26 03:35:28,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 202 flow [2021-03-26 03:35:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-03-26 03:35:28,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6954022988505747 [2021-03-26 03:35:28,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-03-26 03:35:28,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-03-26 03:35:28,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-03-26 03:35:28,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,021 INFO L185 Difference]: Start difference. First operand has 36 places, 41 transitions, 168 flow. Second operand 3 states and 121 transitions. [2021-03-26 03:35:28,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 202 flow [2021-03-26 03:35:28,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 03:35:28,024 INFO L241 Difference]: Finished difference. Result has 37 places, 40 transitions, 167 flow [2021-03-26 03:35:28,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2021-03-26 03:35:28,025 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2021-03-26 03:35:28,025 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,025 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 40 transitions, 167 flow [2021-03-26 03:35:28,025 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 40 transitions, 167 flow [2021-03-26 03:35:28,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 40 transitions, 167 flow [2021-03-26 03:35:28,039 INFO L129 PetriNetUnfolder]: 79/226 cut-off events. [2021-03-26 03:35:28,039 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:35:28,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 226 events. 79/226 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 947 event pairs, 4 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 464. Up to 86 conditions per place. [2021-03-26 03:35:28,043 INFO L142 LiptonReduction]: Number of co-enabled transitions 352 [2021-03-26 03:35:28,047 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:28,047 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,047 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-26 03:35:28,048 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 167 flow [2021-03-26 03:35:28,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:28,049 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:28,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:35:28,049 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1097866649, now seen corresponding path program 1 times [2021-03-26 03:35:28,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:28,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081362436] [2021-03-26 03:35:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:28,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:28,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:28,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081362436] [2021-03-26 03:35:28,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:28,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:35:28,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848326965] [2021-03-26 03:35:28,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:28,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:28,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:28,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:28,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-26 03:35:28,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 167 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) [2021-03-26 03:35:28,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:28,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-26 03:35:28,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,111 INFO L129 PetriNetUnfolder]: 99/275 cut-off events. [2021-03-26 03:35:28,112 INFO L130 PetriNetUnfolder]: For 115/122 co-relation queries the response was YES. [2021-03-26 03:35:28,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 275 events. 99/275 cut-off events. For 115/122 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1188 event pairs, 14 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 698. Up to 95 conditions per place. [2021-03-26 03:35:28,115 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2021-03-26 03:35:28,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 238 flow [2021-03-26 03:35:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-26 03:35:28,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-03-26 03:35:28,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-26 03:35:28,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-26 03:35:28,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-26 03:35:28,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,118 INFO L185 Difference]: Start difference. First operand has 37 places, 40 transitions, 167 flow. Second operand 3 states and 122 transitions. [2021-03-26 03:35:28,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 238 flow [2021-03-26 03:35:28,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:35:28,121 INFO L241 Difference]: Finished difference. Result has 40 places, 44 transitions, 230 flow [2021-03-26 03:35:28,121 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2021-03-26 03:35:28,122 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2021-03-26 03:35:28,122 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,122 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 44 transitions, 230 flow [2021-03-26 03:35:28,122 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 44 transitions, 230 flow [2021-03-26 03:35:28,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 44 transitions, 230 flow [2021-03-26 03:35:28,138 INFO L129 PetriNetUnfolder]: 79/238 cut-off events. [2021-03-26 03:35:28,138 INFO L130 PetriNetUnfolder]: For 187/195 co-relation queries the response was YES. [2021-03-26 03:35:28,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 238 events. 79/238 cut-off events. For 187/195 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1061 event pairs, 4 based on Foata normal form. 1/228 useless extension candidates. Maximal degree in co-relation 614. Up to 87 conditions per place. [2021-03-26 03:35:28,142 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-26 03:35:28,146 INFO L154 LiptonReduction]: Checked pairs total: 15 [2021-03-26 03:35:28,147 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,147 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-26 03:35:28,148 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 230 flow [2021-03-26 03:35:28,148 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) [2021-03-26 03:35:28,148 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:28,148 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:28,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:35:28,149 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1787421985, now seen corresponding path program 2 times [2021-03-26 03:35:28,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980098503] [2021-03-26 03:35:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:28,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:28,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:28,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980098503] [2021-03-26 03:35:28,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:28,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:35:28,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180116157] [2021-03-26 03:35:28,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:28,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:28,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:28,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-26 03:35:28,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 230 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) [2021-03-26 03:35:28,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:28,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-26 03:35:28,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,208 INFO L129 PetriNetUnfolder]: 87/260 cut-off events. [2021-03-26 03:35:28,208 INFO L130 PetriNetUnfolder]: For 363/375 co-relation queries the response was YES. [2021-03-26 03:35:28,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 260 events. 87/260 cut-off events. For 363/375 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1062 event pairs, 13 based on Foata normal form. 16/263 useless extension candidates. Maximal degree in co-relation 774. Up to 83 conditions per place. [2021-03-26 03:35:28,211 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2021-03-26 03:35:28,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 262 flow [2021-03-26 03:35:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-26 03:35:28,213 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2021-03-26 03:35:28,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-26 03:35:28,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-26 03:35:28,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-26 03:35:28,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,215 INFO L185 Difference]: Start difference. First operand has 40 places, 44 transitions, 230 flow. Second operand 3 states and 124 transitions. [2021-03-26 03:35:28,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 262 flow [2021-03-26 03:35:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 03:35:28,218 INFO L241 Difference]: Finished difference. Result has 40 places, 42 transitions, 214 flow [2021-03-26 03:35:28,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2021-03-26 03:35:28,218 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2021-03-26 03:35:28,218 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,218 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 42 transitions, 214 flow [2021-03-26 03:35:28,219 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 42 transitions, 214 flow [2021-03-26 03:35:28,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 42 transitions, 214 flow [2021-03-26 03:35:28,234 INFO L129 PetriNetUnfolder]: 68/227 cut-off events. [2021-03-26 03:35:28,234 INFO L130 PetriNetUnfolder]: For 178/186 co-relation queries the response was YES. [2021-03-26 03:35:28,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 227 events. 68/227 cut-off events. For 178/186 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 950 event pairs, 4 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 570. Up to 76 conditions per place. [2021-03-26 03:35:28,237 INFO L142 LiptonReduction]: Number of co-enabled transitions 356 [2021-03-26 03:35:28,241 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:28,241 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,241 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-03-26 03:35:28,243 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 214 flow [2021-03-26 03:35:28,243 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) [2021-03-26 03:35:28,243 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:28,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:28,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:35:28,243 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2014802579, now seen corresponding path program 1 times [2021-03-26 03:35:28,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:28,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337276452] [2021-03-26 03:35:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:28,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:28,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337276452] [2021-03-26 03:35:28,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:28,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:35:28,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178067207] [2021-03-26 03:35:28,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:35:28,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:28,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:35:28,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:35:28,273 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-26 03:35:28,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 214 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) [2021-03-26 03:35:28,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:28,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-26 03:35:28,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,329 INFO L129 PetriNetUnfolder]: 179/386 cut-off events. [2021-03-26 03:35:28,330 INFO L130 PetriNetUnfolder]: For 289/295 co-relation queries the response was YES. [2021-03-26 03:35:28,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 386 events. 179/386 cut-off events. For 289/295 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1426 event pairs, 22 based on Foata normal form. 12/383 useless extension candidates. Maximal degree in co-relation 1006. Up to 188 conditions per place. [2021-03-26 03:35:28,333 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-26 03:35:28,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 280 flow [2021-03-26 03:35:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 03:35:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 03:35:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-26 03:35:28,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2021-03-26 03:35:28,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-26 03:35:28,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-26 03:35:28,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-26 03:35:28,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,336 INFO L185 Difference]: Start difference. First operand has 40 places, 42 transitions, 214 flow. Second operand 4 states and 137 transitions. [2021-03-26 03:35:28,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 280 flow [2021-03-26 03:35:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:35:28,339 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 220 flow [2021-03-26 03:35:28,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-03-26 03:35:28,340 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2021-03-26 03:35:28,340 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 43 transitions, 220 flow [2021-03-26 03:35:28,340 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 43 transitions, 220 flow [2021-03-26 03:35:28,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 43 transitions, 220 flow [2021-03-26 03:35:28,359 INFO L129 PetriNetUnfolder]: 85/253 cut-off events. [2021-03-26 03:35:28,359 INFO L130 PetriNetUnfolder]: For 126/132 co-relation queries the response was YES. [2021-03-26 03:35:28,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 253 events. 85/253 cut-off events. For 126/132 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 995 event pairs, 4 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 634. Up to 76 conditions per place. [2021-03-26 03:35:28,362 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-26 03:35:28,367 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:28,367 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,367 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 03:35:28,368 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 220 flow [2021-03-26 03:35:28,368 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) [2021-03-26 03:35:28,368 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:28,368 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:28,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:35:28,369 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash 591918176, now seen corresponding path program 1 times [2021-03-26 03:35:28,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:28,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130482675] [2021-03-26 03:35:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:28,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:35:28,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:28,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130482675] [2021-03-26 03:35:28,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:28,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:35:28,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553274090] [2021-03-26 03:35:28,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:35:28,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:28,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:35:28,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:35:28,419 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2021-03-26 03:35:28,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 220 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) [2021-03-26 03:35:28,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:28,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2021-03-26 03:35:28,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,533 INFO L129 PetriNetUnfolder]: 185/416 cut-off events. [2021-03-26 03:35:28,533 INFO L130 PetriNetUnfolder]: For 369/380 co-relation queries the response was YES. [2021-03-26 03:35:28,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 416 events. 185/416 cut-off events. For 369/380 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1514 event pairs, 19 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 1215. Up to 128 conditions per place. [2021-03-26 03:35:28,537 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 15 selfloop transitions, 3 changer transitions 19/65 dead transitions. [2021-03-26 03:35:28,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 406 flow [2021-03-26 03:35:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 03:35:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 03:35:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-26 03:35:28,538 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5763546798029556 [2021-03-26 03:35:28,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-26 03:35:28,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-26 03:35:28,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-26 03:35:28,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,541 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 220 flow. Second operand 7 states and 234 transitions. [2021-03-26 03:35:28,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 406 flow [2021-03-26 03:35:28,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 389 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-26 03:35:28,545 INFO L241 Difference]: Finished difference. Result has 51 places, 42 transitions, 226 flow [2021-03-26 03:35:28,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2021-03-26 03:35:28,545 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2021-03-26 03:35:28,545 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,545 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 42 transitions, 226 flow [2021-03-26 03:35:28,546 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 42 transitions, 226 flow [2021-03-26 03:35:28,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 226 flow [2021-03-26 03:35:28,569 INFO L129 PetriNetUnfolder]: 78/251 cut-off events. [2021-03-26 03:35:28,569 INFO L130 PetriNetUnfolder]: For 215/217 co-relation queries the response was YES. [2021-03-26 03:35:28,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 251 events. 78/251 cut-off events. For 215/217 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 974 event pairs, 7 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 680. Up to 75 conditions per place. [2021-03-26 03:35:28,573 INFO L142 LiptonReduction]: Number of co-enabled transitions 352 [2021-03-26 03:35:28,577 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:28,577 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,577 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-26 03:35:28,578 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 226 flow [2021-03-26 03:35:28,578 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) [2021-03-26 03:35:28,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:28,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:28,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:35:28,579 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1252490004, now seen corresponding path program 2 times [2021-03-26 03:35:28,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:28,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004861213] [2021-03-26 03:35:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:28,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:28,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:28,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004861213] [2021-03-26 03:35:28,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:28,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:35:28,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928823259] [2021-03-26 03:35:28,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:35:28,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:28,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:35:28,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:35:28,613 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-26 03:35:28,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 226 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) [2021-03-26 03:35:28,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:28,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-26 03:35:28,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,677 INFO L129 PetriNetUnfolder]: 158/366 cut-off events. [2021-03-26 03:35:28,677 INFO L130 PetriNetUnfolder]: For 461/472 co-relation queries the response was YES. [2021-03-26 03:35:28,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 366 events. 158/366 cut-off events. For 461/472 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1281 event pairs, 26 based on Foata normal form. 12/365 useless extension candidates. Maximal degree in co-relation 1134. Up to 188 conditions per place. [2021-03-26 03:35:28,681 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-26 03:35:28,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 295 flow [2021-03-26 03:35:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 03:35:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 03:35:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2021-03-26 03:35:28,682 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2021-03-26 03:35:28,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2021-03-26 03:35:28,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2021-03-26 03:35:28,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2021-03-26 03:35:28,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,684 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,684 INFO L185 Difference]: Start difference. First operand has 48 places, 42 transitions, 226 flow. Second operand 4 states and 136 transitions. [2021-03-26 03:35:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 295 flow [2021-03-26 03:35:28,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 281 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-26 03:35:28,688 INFO L241 Difference]: Finished difference. Result has 47 places, 43 transitions, 232 flow [2021-03-26 03:35:28,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2021-03-26 03:35:28,688 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2021-03-26 03:35:28,689 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,689 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 43 transitions, 232 flow [2021-03-26 03:35:28,689 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 43 transitions, 232 flow [2021-03-26 03:35:28,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 232 flow [2021-03-26 03:35:28,714 INFO L129 PetriNetUnfolder]: 95/286 cut-off events. [2021-03-26 03:35:28,714 INFO L130 PetriNetUnfolder]: For 186/188 co-relation queries the response was YES. [2021-03-26 03:35:28,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 286 events. 95/286 cut-off events. For 186/188 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1104 event pairs, 9 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 787. Up to 77 conditions per place. [2021-03-26 03:35:28,718 INFO L142 LiptonReduction]: Number of co-enabled transitions 364 [2021-03-26 03:35:28,722 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:28,722 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,722 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-26 03:35:28,723 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 232 flow [2021-03-26 03:35:28,724 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) [2021-03-26 03:35:28,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:28,724 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:28,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:35:28,724 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 03:35:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:28,725 INFO L82 PathProgramCache]: Analyzing trace with hash 941350301, now seen corresponding path program 3 times [2021-03-26 03:35:28,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:28,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799289254] [2021-03-26 03:35:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:28,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:35:28,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:35:28,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:28,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:35:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:35:28,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799289254] [2021-03-26 03:35:28,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:28,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:35:28,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114321889] [2021-03-26 03:35:28,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:35:28,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:35:28,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:35:28,776 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2021-03-26 03:35:28,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 232 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) [2021-03-26 03:35:28,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:28,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2021-03-26 03:35:28,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:28,876 INFO L129 PetriNetUnfolder]: 75/170 cut-off events. [2021-03-26 03:35:28,876 INFO L130 PetriNetUnfolder]: For 236/240 co-relation queries the response was YES. [2021-03-26 03:35:28,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 170 events. 75/170 cut-off events. For 236/240 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 456 event pairs, 4 based on Foata normal form. 8/176 useless extension candidates. Maximal degree in co-relation 587. Up to 60 conditions per place. [2021-03-26 03:35:28,878 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2021-03-26 03:35:28,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 359 flow [2021-03-26 03:35:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 03:35:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 03:35:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2021-03-26 03:35:28,879 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5738916256157636 [2021-03-26 03:35:28,880 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2021-03-26 03:35:28,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2021-03-26 03:35:28,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:28,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2021-03-26 03:35:28,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,882 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:35:28,882 INFO L185 Difference]: Start difference. First operand has 47 places, 43 transitions, 232 flow. Second operand 7 states and 233 transitions. [2021-03-26 03:35:28,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 359 flow [2021-03-26 03:35:28,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 314 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-26 03:35:28,884 INFO L241 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2021-03-26 03:35:28,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2021-03-26 03:35:28,885 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2021-03-26 03:35:28,885 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:28,885 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 0 transitions, 0 flow [2021-03-26 03:35:28,885 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 0 transitions, 0 flow [2021-03-26 03:35:28,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 03:35:28,886 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 03:35:28,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:28,886 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. [2021-03-26 03:35:28,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:35:28,886 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:28,886 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:28,887 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 03:35:28,888 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 03:35:28,888 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) [2021-03-26 03:35:28,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:35:28,893 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:35:28 BasicIcfg [2021-03-26 03:35:28,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:35:28,895 INFO L168 Benchmark]: Toolchain (without parser) took 2167.84 ms. Allocated memory is still 356.5 MB. Free memory was 336.9 MB in the beginning and 235.1 MB in the end (delta: 101.9 MB). Peak memory consumption was 104.4 MB. Max. memory is 16.0 GB. [2021-03-26 03:35:28,896 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.60 ms. Allocated memory is still 356.5 MB. Free memory is still 338.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:35:28,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.42 ms. Allocated memory is still 356.5 MB. Free memory was 336.8 MB in the beginning and 335.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:35:28,898 INFO L168 Benchmark]: Boogie Preprocessor took 20.45 ms. Allocated memory is still 356.5 MB. Free memory was 335.4 MB in the beginning and 334.5 MB in the end (delta: 971.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:35:28,898 INFO L168 Benchmark]: RCFGBuilder took 212.42 ms. Allocated memory is still 356.5 MB. Free memory was 334.3 MB in the beginning and 321.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:35:28,898 INFO L168 Benchmark]: TraceAbstraction took 1902.65 ms. Allocated memory is still 356.5 MB. Free memory was 321.5 MB in the beginning and 235.1 MB in the end (delta: 86.4 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:35:28,900 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 0.60 ms. Allocated memory is still 356.5 MB. Free memory is still 338.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.42 ms. Allocated memory is still 356.5 MB. Free memory was 336.8 MB in the beginning and 335.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.45 ms. Allocated memory is still 356.5 MB. Free memory was 335.4 MB in the beginning and 334.5 MB in the end (delta: 971.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 212.42 ms. Allocated memory is still 356.5 MB. Free memory was 334.3 MB in the beginning and 321.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1902.65 ms. Allocated memory is still 356.5 MB. Free memory was 321.5 MB in the beginning and 235.1 MB in the end (delta: 86.4 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 377.7ms, 48 PlacesBefore, 37 PlacesAfterwards, 43 TransitionsBefore, 32 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 1066 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 727, positive: 675, positive conditional: 675, positive unconditional: 0, negative: 52, negative conditional: 52, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 457, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 457, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 457, positive: 407, positive conditional: 0, positive unconditional: 407, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 140, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 727, positive: 245, positive conditional: 245, positive unconditional: 0, negative: 25, negative conditional: 25, negative unconditional: 0, unknown: 457, unknown conditional: 457, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 148, Positive conditional cache size: 148, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.6ms, 35 PlacesBefore, 34 PlacesAfterwards, 35 TransitionsBefore, 34 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 104, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 8, negative conditional: 8, 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: 4, positive unconditional: 12, 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: 4, positive unconditional: 12, 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: 16, positive conditional: 0, positive unconditional: 16, 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: 104, positive: 80, positive conditional: 80, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 164, Positive conditional cache size: 164, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.4ms, 36 PlacesBefore, 36 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 380 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 26, positive conditional: 26, 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: 17, positive: 17, positive conditional: 2, positive unconditional: 15, 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: 17, positive: 17, positive conditional: 2, positive unconditional: 15, 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: 17, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 28, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 181, Positive conditional cache size: 181, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.6ms, 37 PlacesBefore, 37 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 352 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): 201, Positive cache size: 181, Positive conditional cache size: 181, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.4ms, 40 PlacesBefore, 40 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 380 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 15 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 1, positive unconditional: 3, 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: 4, positive: 4, positive conditional: 1, positive unconditional: 3, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 14, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 205, Positive cache size: 185, Positive conditional cache size: 185, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.6ms, 40 PlacesBefore, 40 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 356 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): 205, Positive cache size: 185, Positive conditional cache size: 185, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.4ms, 43 PlacesBefore, 43 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 380 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): 205, Positive cache size: 185, Positive conditional cache size: 185, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.2ms, 51 PlacesBefore, 48 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 352 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): 205, Positive cache size: 185, Positive conditional cache size: 185, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.1ms, 47 PlacesBefore, 47 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 364 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): 205, Positive cache size: 185, Positive conditional cache size: 185, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2ms, 46 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): 205, Positive cache size: 185, Positive conditional cache size: 185, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, 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: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1787.7ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 670.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 448.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 92 SDtfs, 63 SDslu, 9 SDs, 0 SdLazy, 219 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred 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: 9.2ms SsaConstructionTime, 46.9ms SatisfiabilityAnalysisTime, 202.1ms InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 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...