/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:54:48,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:54:48,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:54:48,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 07:54:48,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:54:48,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:54:48,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:54:48,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:54:48,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:54:48,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:54:48,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:54:48,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:54:48,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:54:48,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:54:48,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:54:48,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:54:48,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:54:48,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:54:48,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:54:48,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:54:48,529 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-RepeatedVariableLbe.epf [2021-03-25 07:54:48,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:54:48,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:54:48,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:54:48,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:54:48,572 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:54:48,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:54:48,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:54:48,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:54:48,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:54:48,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:54:48,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:54:48,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:54:48,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:54:48,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:54:48,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:54:48,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:54:48,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:54:48,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:54:48,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:54:48,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:54:48,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:54:48,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:48,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:54:48,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:54:48,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:54:48,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:54:48,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:54:48,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:54:48,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:54:48,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:54:48,576 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:54:48,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:54:48,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:54:48,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:54:48,920 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:54:48,921 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:54:48,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-03-25 07:54:48,923 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-03-25 07:54:48,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:54:48,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:54:48,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:48,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:54:48,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:54:48,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:48,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:49,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:54:49,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:54:49,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:54:49,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... [2021-03-25 07:54:49,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:54:49,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:54:49,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:54:49,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:54:49,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:49,087 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-25 07:54:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-25 07:54:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-25 07:54:49,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-25 07:54:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-25 07:54:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-25 07:54:49,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 07:54:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:54:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:54:49,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-25 07:54:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-25 07:54:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-25 07:54:49,090 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:54:49,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:54:49,291 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-25 07:54:49,292 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:49 BoogieIcfgContainer [2021-03-25 07:54:49,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:54:49,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:54:49,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:54:49,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:54:49,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:48" (1/2) ... [2021-03-25 07:54:49,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30acfea3 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:54:49, skipping insertion in model container [2021-03-25 07:54:49,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:49" (2/2) ... [2021-03-25 07:54:49,298 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-03-25 07:54:49,302 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:54:49,305 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 07:54:49,305 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:54:49,324 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,325 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,325 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,325 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,326 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,326 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,326 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,326 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,327 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,328 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,328 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,328 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,329 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,329 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,329 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,329 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,334 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,336 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:49,337 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:54:49,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 07:54:49,368 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:54:49,369 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:54:49,369 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:54:49,369 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:54:49,369 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:54:49,369 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:54:49,369 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:54:49,369 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:54:49,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-25 07:54:49,417 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 07:54:49,417 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:49,421 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. [2021-03-25 07:54:49,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-25 07:54:49,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-25 07:54:49,426 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:49,434 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-25 07:54:49,437 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-25 07:54:49,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-25 07:54:49,453 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 07:54:49,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:49,454 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. [2021-03-25 07:54:49,456 INFO L142 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-25 07:54:49,614 INFO L154 LiptonReduction]: Checked pairs total: 1916 [2021-03-25 07:54:49,614 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 07:54:49,616 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 191 [2021-03-25 07:54:49,623 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-25 07:54:49,623 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:49,624 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:49,624 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:54:49,624 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash 926283158, now seen corresponding path program 1 times [2021-03-25 07:54:49,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:49,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460850311] [2021-03-25 07:54:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:49,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:49,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:49,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460850311] [2021-03-25 07:54:49,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:49,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 07:54:49,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985699127] [2021-03-25 07:54:49,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:49,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:49,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:49,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:49,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 51 [2021-03-25 07:54:49,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 85 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) [2021-03-25 07:54:49,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:49,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 51 [2021-03-25 07:54:49,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:49,793 INFO L129 PetriNetUnfolder]: 31/132 cut-off events. [2021-03-25 07:54:49,793 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:49,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 132 events. 31/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 488 event pairs, 4 based on Foata normal form. 41/162 useless extension candidates. Maximal degree in co-relation 177. Up to 30 conditions per place. [2021-03-25 07:54:49,796 INFO L132 encePairwiseOnDemand]: 39/51 looper letters, 8 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2021-03-25 07:54:49,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 121 flow [2021-03-25 07:54:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2021-03-25 07:54:49,806 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8366013071895425 [2021-03-25 07:54:49,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2021-03-25 07:54:49,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2021-03-25 07:54:49,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:49,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2021-03-25 07:54:49,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:49,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:49,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:49,817 INFO L185 Difference]: Start difference. First operand has 43 places, 38 transitions, 85 flow. Second operand 3 states and 128 transitions. [2021-03-25 07:54:49,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 121 flow [2021-03-25 07:54:49,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 07:54:49,822 INFO L241 Difference]: Finished difference. Result has 41 places, 41 transitions, 132 flow [2021-03-25 07:54:49,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2021-03-25 07:54:49,824 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2021-03-25 07:54:49,825 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:49,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 41 transitions, 132 flow [2021-03-25 07:54:49,825 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 41 transitions, 132 flow [2021-03-25 07:54:49,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 41 transitions, 132 flow [2021-03-25 07:54:49,843 INFO L129 PetriNetUnfolder]: 31/123 cut-off events. [2021-03-25 07:54:49,843 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 07:54:49,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 123 events. 31/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 2 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 191. Up to 30 conditions per place. [2021-03-25 07:54:49,846 INFO L142 LiptonReduction]: Number of co-enabled transitions 528 [2021-03-25 07:54:49,897 INFO L154 LiptonReduction]: Checked pairs total: 132 [2021-03-25 07:54:49,897 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 07:54:49,898 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 73 [2021-03-25 07:54:49,899 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2021-03-25 07:54:49,899 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) [2021-03-25 07:54:49,899 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:49,899 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:49,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:54:49,900 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 431960874, now seen corresponding path program 1 times [2021-03-25 07:54:49,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:49,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700815778] [2021-03-25 07:54:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:49,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:49,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:49,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:49,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:49,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:49,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:49,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700815778] [2021-03-25 07:54:49,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:49,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:49,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081949674] [2021-03-25 07:54:49,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:49,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:49,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:49,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:49,926 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-25 07:54:49,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 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) [2021-03-25 07:54:49,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:49,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-25 07:54:49,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:50,025 INFO L129 PetriNetUnfolder]: 98/289 cut-off events. [2021-03-25 07:54:50,026 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 07:54:50,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 289 events. 98/289 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1394 event pairs, 13 based on Foata normal form. 4/269 useless extension candidates. Maximal degree in co-relation 569. Up to 115 conditions per place. [2021-03-25 07:54:50,030 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 13 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2021-03-25 07:54:50,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 190 flow [2021-03-25 07:54:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-25 07:54:50,043 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8012820512820513 [2021-03-25 07:54:50,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-25 07:54:50,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-25 07:54:50,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:50,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-25 07:54:50,046 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) [2021-03-25 07:54:50,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,047 INFO L185 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 3 states and 125 transitions. [2021-03-25 07:54:50,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 190 flow [2021-03-25 07:54:50,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 07:54:50,053 INFO L241 Difference]: Finished difference. Result has 42 places, 47 transitions, 180 flow [2021-03-25 07:54:50,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2021-03-25 07:54:50,054 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2021-03-25 07:54:50,054 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:50,054 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 47 transitions, 180 flow [2021-03-25 07:54:50,055 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 47 transitions, 180 flow [2021-03-25 07:54:50,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 47 transitions, 180 flow [2021-03-25 07:54:50,079 INFO L129 PetriNetUnfolder]: 85/278 cut-off events. [2021-03-25 07:54:50,079 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-03-25 07:54:50,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 278 events. 85/278 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1437 event pairs, 5 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 509. Up to 93 conditions per place. [2021-03-25 07:54:50,084 INFO L142 LiptonReduction]: Number of co-enabled transitions 588 [2021-03-25 07:54:50,098 INFO L154 LiptonReduction]: Checked pairs total: 34 [2021-03-25 07:54:50,098 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:50,099 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-25 07:54:50,100 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 180 flow [2021-03-25 07:54:50,100 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) [2021-03-25 07:54:50,100 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:50,100 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:50,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:54:50,101 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:50,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1003120831, now seen corresponding path program 1 times [2021-03-25 07:54:50,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:50,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24323124] [2021-03-25 07:54:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:50,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:50,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:50,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24323124] [2021-03-25 07:54:50,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:50,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:50,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307739356] [2021-03-25 07:54:50,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:50,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:50,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:50,122 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-25 07:54:50,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 180 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) [2021-03-25 07:54:50,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:50,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-25 07:54:50,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:50,172 INFO L129 PetriNetUnfolder]: 86/287 cut-off events. [2021-03-25 07:54:50,172 INFO L130 PetriNetUnfolder]: For 113/126 co-relation queries the response was YES. [2021-03-25 07:54:50,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 287 events. 86/287 cut-off events. For 113/126 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1268 event pairs, 19 based on Foata normal form. 13/290 useless extension candidates. Maximal degree in co-relation 637. Up to 110 conditions per place. [2021-03-25 07:54:50,176 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 14 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2021-03-25 07:54:50,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 214 flow [2021-03-25 07:54:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-03-25 07:54:50,178 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7756410256410257 [2021-03-25 07:54:50,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-03-25 07:54:50,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-03-25 07:54:50,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:50,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-03-25 07:54:50,179 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) [2021-03-25 07:54:50,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,180 INFO L185 Difference]: Start difference. First operand has 42 places, 47 transitions, 180 flow. Second operand 3 states and 121 transitions. [2021-03-25 07:54:50,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 214 flow [2021-03-25 07:54:50,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 07:54:50,183 INFO L241 Difference]: Finished difference. Result has 43 places, 46 transitions, 179 flow [2021-03-25 07:54:50,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2021-03-25 07:54:50,184 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2021-03-25 07:54:50,184 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:50,184 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 46 transitions, 179 flow [2021-03-25 07:54:50,185 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 46 transitions, 179 flow [2021-03-25 07:54:50,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 46 transitions, 179 flow [2021-03-25 07:54:50,203 INFO L129 PetriNetUnfolder]: 73/262 cut-off events. [2021-03-25 07:54:50,204 INFO L130 PetriNetUnfolder]: For 33/35 co-relation queries the response was YES. [2021-03-25 07:54:50,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 262 events. 73/262 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1122 event pairs, 4 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 494. Up to 84 conditions per place. [2021-03-25 07:54:50,208 INFO L142 LiptonReduction]: Number of co-enabled transitions 548 [2021-03-25 07:54:50,215 INFO L154 LiptonReduction]: Checked pairs total: 17 [2021-03-25 07:54:50,215 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:50,216 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 07:54:50,216 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 179 flow [2021-03-25 07:54:50,217 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) [2021-03-25 07:54:50,217 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:50,217 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:50,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:54:50,217 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:50,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:50,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1220890440, now seen corresponding path program 1 times [2021-03-25 07:54:50,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:50,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746911758] [2021-03-25 07:54:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:50,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:50,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:50,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746911758] [2021-03-25 07:54:50,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:50,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:50,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001407198] [2021-03-25 07:54:50,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:50,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:50,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:50,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:50,243 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-25 07:54:50,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 179 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) [2021-03-25 07:54:50,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:50,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-25 07:54:50,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:50,314 INFO L129 PetriNetUnfolder]: 94/324 cut-off events. [2021-03-25 07:54:50,314 INFO L130 PetriNetUnfolder]: For 144/159 co-relation queries the response was YES. [2021-03-25 07:54:50,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 324 events. 94/324 cut-off events. For 144/159 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1468 event pairs, 16 based on Foata normal form. 7/321 useless extension candidates. Maximal degree in co-relation 741. Up to 94 conditions per place. [2021-03-25 07:54:50,319 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 14 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2021-03-25 07:54:50,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 250 flow [2021-03-25 07:54:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-25 07:54:50,321 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-25 07:54:50,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-25 07:54:50,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-25 07:54:50,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:50,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-25 07:54:50,323 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) [2021-03-25 07:54:50,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,325 INFO L185 Difference]: Start difference. First operand has 43 places, 46 transitions, 179 flow. Second operand 3 states and 122 transitions. [2021-03-25 07:54:50,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 250 flow [2021-03-25 07:54:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:54:50,331 INFO L241 Difference]: Finished difference. Result has 46 places, 50 transitions, 242 flow [2021-03-25 07:54:50,331 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2021-03-25 07:54:50,331 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2021-03-25 07:54:50,331 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:50,331 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 50 transitions, 242 flow [2021-03-25 07:54:50,332 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 50 transitions, 242 flow [2021-03-25 07:54:50,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 50 transitions, 242 flow [2021-03-25 07:54:50,352 INFO L129 PetriNetUnfolder]: 73/279 cut-off events. [2021-03-25 07:54:50,352 INFO L130 PetriNetUnfolder]: For 183/188 co-relation queries the response was YES. [2021-03-25 07:54:50,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 279 events. 73/279 cut-off events. For 183/188 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1258 event pairs, 9 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 645. Up to 85 conditions per place. [2021-03-25 07:54:50,356 INFO L142 LiptonReduction]: Number of co-enabled transitions 584 [2021-03-25 07:54:50,363 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 07:54:50,363 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:50,364 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 07:54:50,366 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 242 flow [2021-03-25 07:54:50,366 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) [2021-03-25 07:54:50,366 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:50,367 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:50,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 07:54:50,367 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:50,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1012452382, now seen corresponding path program 2 times [2021-03-25 07:54:50,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:50,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652015482] [2021-03-25 07:54:50,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:50,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:50,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:50,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652015482] [2021-03-25 07:54:50,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:50,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:50,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539018001] [2021-03-25 07:54:50,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:50,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:50,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:50,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:50,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-25 07:54:50,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 242 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) [2021-03-25 07:54:50,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:50,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-25 07:54:50,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:50,480 INFO L129 PetriNetUnfolder]: 86/310 cut-off events. [2021-03-25 07:54:50,480 INFO L130 PetriNetUnfolder]: For 398/420 co-relation queries the response was YES. [2021-03-25 07:54:50,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 310 events. 86/310 cut-off events. For 398/420 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1262 event pairs, 13 based on Foata normal form. 17/312 useless extension candidates. Maximal degree in co-relation 820. Up to 82 conditions per place. [2021-03-25 07:54:50,485 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 14 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2021-03-25 07:54:50,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 274 flow [2021-03-25 07:54:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-25 07:54:50,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-25 07:54:50,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-25 07:54:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-25 07:54:50,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:50,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-25 07:54:50,488 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) [2021-03-25 07:54:50,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,490 INFO L185 Difference]: Start difference. First operand has 46 places, 50 transitions, 242 flow. Second operand 3 states and 124 transitions. [2021-03-25 07:54:50,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 274 flow [2021-03-25 07:54:50,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 07:54:50,494 INFO L241 Difference]: Finished difference. Result has 46 places, 48 transitions, 226 flow [2021-03-25 07:54:50,494 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2021-03-25 07:54:50,494 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2021-03-25 07:54:50,494 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:50,495 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 48 transitions, 226 flow [2021-03-25 07:54:50,495 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 48 transitions, 226 flow [2021-03-25 07:54:50,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 226 flow [2021-03-25 07:54:50,518 INFO L129 PetriNetUnfolder]: 68/274 cut-off events. [2021-03-25 07:54:50,518 INFO L130 PetriNetUnfolder]: For 181/187 co-relation queries the response was YES. [2021-03-25 07:54:50,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 274 events. 68/274 cut-off events. For 181/187 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1116 event pairs, 8 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 617. Up to 76 conditions per place. [2021-03-25 07:54:50,522 INFO L142 LiptonReduction]: Number of co-enabled transitions 552 [2021-03-25 07:54:50,530 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:50,530 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:50,530 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 07:54:50,531 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 226 flow [2021-03-25 07:54:50,531 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) [2021-03-25 07:54:50,531 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:50,531 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:50,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 07:54:50,532 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:50,532 INFO L82 PathProgramCache]: Analyzing trace with hash -796131889, now seen corresponding path program 1 times [2021-03-25 07:54:50,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:50,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690017603] [2021-03-25 07:54:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:50,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:50,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:50,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:50,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690017603] [2021-03-25 07:54:50,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:50,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:50,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551155633] [2021-03-25 07:54:50,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 07:54:50,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 07:54:50,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 07:54:50,607 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-25 07:54:50,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 226 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) [2021-03-25 07:54:50,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:50,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-25 07:54:50,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:50,689 INFO L129 PetriNetUnfolder]: 220/522 cut-off events. [2021-03-25 07:54:50,689 INFO L130 PetriNetUnfolder]: For 217/224 co-relation queries the response was YES. [2021-03-25 07:54:50,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 522 events. 220/522 cut-off events. For 217/224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2135 event pairs, 40 based on Foata normal form. 18/519 useless extension candidates. Maximal degree in co-relation 1207. Up to 239 conditions per place. [2021-03-25 07:54:50,694 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 13 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2021-03-25 07:54:50,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 268 flow [2021-03-25 07:54:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 07:54:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 07:54:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-25 07:54:50,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2021-03-25 07:54:50,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-25 07:54:50,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-25 07:54:50,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:50,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-25 07:54:50,697 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) [2021-03-25 07:54:50,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,698 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,698 INFO L185 Difference]: Start difference. First operand has 46 places, 48 transitions, 226 flow. Second operand 4 states and 137 transitions. [2021-03-25 07:54:50,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 268 flow [2021-03-25 07:54:50,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:54:50,703 INFO L241 Difference]: Finished difference. Result has 49 places, 49 transitions, 232 flow [2021-03-25 07:54:50,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2021-03-25 07:54:50,704 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2021-03-25 07:54:50,704 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:50,704 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 49 transitions, 232 flow [2021-03-25 07:54:50,705 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 49 transitions, 232 flow [2021-03-25 07:54:50,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 49 transitions, 232 flow [2021-03-25 07:54:50,735 INFO L129 PetriNetUnfolder]: 86/301 cut-off events. [2021-03-25 07:54:50,736 INFO L130 PetriNetUnfolder]: For 112/118 co-relation queries the response was YES. [2021-03-25 07:54:50,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 301 events. 86/301 cut-off events. For 112/118 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1170 event pairs, 8 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 683. Up to 76 conditions per place. [2021-03-25 07:54:50,740 INFO L142 LiptonReduction]: Number of co-enabled transitions 582 [2021-03-25 07:54:50,747 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:50,747 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:50,747 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 07:54:50,748 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 232 flow [2021-03-25 07:54:50,748 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) [2021-03-25 07:54:50,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:50,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:50,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 07:54:50,749 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash -7757776, now seen corresponding path program 1 times [2021-03-25 07:54:50,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:50,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941877672] [2021-03-25 07:54:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:50,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:50,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:50,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:50,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:50,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:50,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:50,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941877672] [2021-03-25 07:54:50,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:50,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 07:54:50,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094604786] [2021-03-25 07:54:50,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 07:54:50,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 07:54:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 07:54:50,814 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2021-03-25 07:54:50,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 232 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) [2021-03-25 07:54:50,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:50,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2021-03-25 07:54:50,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:50,952 INFO L129 PetriNetUnfolder]: 236/589 cut-off events. [2021-03-25 07:54:50,952 INFO L130 PetriNetUnfolder]: For 255/266 co-relation queries the response was YES. [2021-03-25 07:54:50,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 589 events. 236/589 cut-off events. For 255/266 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2480 event pairs, 31 based on Foata normal form. 17/592 useless extension candidates. Maximal degree in co-relation 1538. Up to 161 conditions per place. [2021-03-25 07:54:50,956 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 15 selfloop transitions, 3 changer transitions 15/69 dead transitions. [2021-03-25 07:54:50,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 367 flow [2021-03-25 07:54:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 07:54:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 07:54:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-25 07:54:50,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2021-03-25 07:54:50,959 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-25 07:54:50,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-25 07:54:50,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:50,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-25 07:54:50,960 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) [2021-03-25 07:54:50,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:50,962 INFO L185 Difference]: Start difference. First operand has 49 places, 49 transitions, 232 flow. Second operand 7 states and 234 transitions. [2021-03-25 07:54:50,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 367 flow [2021-03-25 07:54:50,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 350 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-25 07:54:50,966 INFO L241 Difference]: Finished difference. Result has 57 places, 49 transitions, 246 flow [2021-03-25 07:54:50,967 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2021-03-25 07:54:50,967 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2021-03-25 07:54:50,967 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:50,967 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 49 transitions, 246 flow [2021-03-25 07:54:50,967 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 49 transitions, 246 flow [2021-03-25 07:54:50,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 49 transitions, 246 flow [2021-03-25 07:54:50,994 INFO L129 PetriNetUnfolder]: 89/325 cut-off events. [2021-03-25 07:54:50,994 INFO L130 PetriNetUnfolder]: For 144/147 co-relation queries the response was YES. [2021-03-25 07:54:50,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 325 events. 89/325 cut-off events. For 144/147 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1230 event pairs, 14 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 793. Up to 80 conditions per place. [2021-03-25 07:54:50,999 INFO L142 LiptonReduction]: Number of co-enabled transitions 548 [2021-03-25 07:54:51,007 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:51,008 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:51,008 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-25 07:54:51,010 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 246 flow [2021-03-25 07:54:51,011 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) [2021-03-25 07:54:51,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:51,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:51,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 07:54:51,011 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1238072814, now seen corresponding path program 2 times [2021-03-25 07:54:51,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:51,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674265442] [2021-03-25 07:54:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:51,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:51,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:51,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:51,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674265442] [2021-03-25 07:54:51,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:51,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:51,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536728604] [2021-03-25 07:54:51,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 07:54:51,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:51,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 07:54:51,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 07:54:51,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-25 07:54:51,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 246 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) [2021-03-25 07:54:51,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:51,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-25 07:54:51,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:51,124 INFO L129 PetriNetUnfolder]: 196/499 cut-off events. [2021-03-25 07:54:51,124 INFO L130 PetriNetUnfolder]: For 371/383 co-relation queries the response was YES. [2021-03-25 07:54:51,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 499 events. 196/499 cut-off events. For 371/383 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1904 event pairs, 39 based on Foata normal form. 17/501 useless extension candidates. Maximal degree in co-relation 1408. Up to 238 conditions per place. [2021-03-25 07:54:51,128 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 11 selfloop transitions, 3 changer transitions 4/55 dead transitions. [2021-03-25 07:54:51,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 308 flow [2021-03-25 07:54:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 07:54:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 07:54:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-25 07:54:51,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2021-03-25 07:54:51,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-25 07:54:51,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-25 07:54:51,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:51,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-25 07:54:51,131 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) [2021-03-25 07:54:51,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:51,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:51,132 INFO L185 Difference]: Start difference. First operand has 54 places, 49 transitions, 246 flow. Second operand 4 states and 137 transitions. [2021-03-25 07:54:51,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 308 flow [2021-03-25 07:54:51,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 298 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 07:54:51,136 INFO L241 Difference]: Finished difference. Result has 54 places, 50 transitions, 256 flow [2021-03-25 07:54:51,136 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2021-03-25 07:54:51,136 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2021-03-25 07:54:51,136 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:51,136 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 256 flow [2021-03-25 07:54:51,137 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 256 flow [2021-03-25 07:54:51,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 256 flow [2021-03-25 07:54:51,164 INFO L129 PetriNetUnfolder]: 116/380 cut-off events. [2021-03-25 07:54:51,164 INFO L130 PetriNetUnfolder]: For 181/184 co-relation queries the response was YES. [2021-03-25 07:54:51,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 380 events. 116/380 cut-off events. For 181/184 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1444 event pairs, 16 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 979. Up to 82 conditions per place. [2021-03-25 07:54:51,170 INFO L142 LiptonReduction]: Number of co-enabled transitions 564 [2021-03-25 07:54:51,177 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:51,177 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:51,178 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-25 07:54:51,178 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 256 flow [2021-03-25 07:54:51,178 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) [2021-03-25 07:54:51,178 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:51,178 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:54:51,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 07:54:51,179 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 07:54:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1049853445, now seen corresponding path program 3 times [2021-03-25 07:54:51,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:51,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465263143] [2021-03-25 07:54:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:51,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:51,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:51,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:51,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:54:51,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:51,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:54:51,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465263143] [2021-03-25 07:54:51,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:51,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 07:54:51,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160766788] [2021-03-25 07:54:51,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 07:54:51,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 07:54:51,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 07:54:51,237 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2021-03-25 07:54:51,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 256 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) [2021-03-25 07:54:51,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:51,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2021-03-25 07:54:51,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:51,370 INFO L129 PetriNetUnfolder]: 131/334 cut-off events. [2021-03-25 07:54:51,370 INFO L130 PetriNetUnfolder]: For 355/365 co-relation queries the response was YES. [2021-03-25 07:54:51,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 334 events. 131/334 cut-off events. For 355/365 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1229 event pairs, 17 based on Foata normal form. 15/343 useless extension candidates. Maximal degree in co-relation 1076. Up to 112 conditions per place. [2021-03-25 07:54:51,372 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2021-03-25 07:54:51,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 378 flow [2021-03-25 07:54:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 07:54:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 07:54:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-25 07:54:51,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2021-03-25 07:54:51,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-25 07:54:51,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-25 07:54:51,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:51,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-25 07:54:51,375 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) [2021-03-25 07:54:51,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:51,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:54:51,377 INFO L185 Difference]: Start difference. First operand has 54 places, 50 transitions, 256 flow. Second operand 7 states and 234 transitions. [2021-03-25 07:54:51,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 378 flow [2021-03-25 07:54:51,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 345 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 07:54:51,380 INFO L241 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2021-03-25 07:54:51,380 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2021-03-25 07:54:51,381 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2021-03-25 07:54:51,381 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:51,381 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 0 transitions, 0 flow [2021-03-25 07:54:51,381 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 0 transitions, 0 flow [2021-03-25 07:54:51,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:51,381 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:54:51,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:51,382 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. [2021-03-25 07:54:51,382 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:54:51,382 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:51,382 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:51,382 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 07:54:51,382 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:51,385 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) [2021-03-25 07:54:51,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 07:54:51,389 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:54:51 BasicIcfg [2021-03-25 07:54:51,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:54:51,390 INFO L168 Benchmark]: Toolchain (without parser) took 2416.76 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 236.6 MB in the beginning and 315.7 MB in the end (delta: -79.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:51,390 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.57 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 182.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:51,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.36 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:51,391 INFO L168 Benchmark]: Boogie Preprocessor took 18.08 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.2 MB in the end (delta: 973.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:51,391 INFO L168 Benchmark]: RCFGBuilder took 272.31 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 237.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:51,391 INFO L168 Benchmark]: TraceAbstraction took 2095.15 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 237.0 MB in the beginning and 315.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:51,393 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 0.57 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 182.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.36 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.08 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.2 MB in the end (delta: 973.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 272.31 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 237.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2095.15 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 237.0 MB in the beginning and 315.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 177.3ms, 48 PlacesBefore, 43 PlacesAfterwards, 43 TransitionsBefore, 38 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1916 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1153, positive: 1057, positive conditional: 0, positive unconditional: 1057, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 239, positive: 220, positive conditional: 0, positive unconditional: 220, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 239, positive: 220, positive conditional: 0, positive unconditional: 220, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1153, positive: 837, positive conditional: 0, positive unconditional: 837, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 239, unknown conditional: 0, unknown unconditional: 239] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 72.3ms, 41 PlacesBefore, 40 PlacesAfterwards, 41 TransitionsBefore, 40 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 132 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 73, positive conditional: 0, positive unconditional: 73, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 81, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.8ms, 42 PlacesBefore, 42 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 588 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 2, negative conditional: 0, negative unconditional: 2, 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: 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] , Cache Queries: [ total: 34, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.9ms, 43 PlacesBefore, 43 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 548 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 1, negative conditional: 0, negative unconditional: 1, 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: 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] , Cache Queries: [ total: 17, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.8ms, 46 PlacesBefore, 46 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 584 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 1, negative conditional: 0, negative unconditional: 1, 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: 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] , Cache Queries: [ total: 18, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.5ms, 46 PlacesBefore, 46 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 552 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: 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] , 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): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.4ms, 49 PlacesBefore, 49 PlacesAfterwards, 49 TransitionsBefore, 49 TransitionsAfterwards, 582 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: 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] , 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): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.7ms, 57 PlacesBefore, 54 PlacesAfterwards, 49 TransitionsBefore, 49 TransitionsAfterwards, 548 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: 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] , 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): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.8ms, 54 PlacesBefore, 54 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 564 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: 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] , 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): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 54 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: 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] , 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): 162, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - 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: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2021.0ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 921.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 250.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 62 SDslu, 9 SDs, 0 SdLazy, 227 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred 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: 15.3ms SsaConstructionTime, 92.8ms SatisfiabilityAnalysisTime, 241.0ms InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 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...