/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:34:30,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:34:30,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:34:30,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:34:30,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:34:30,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:34:30,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:34:30,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:34:30,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:34:30,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:34:30,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:34:30,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:34:30,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:34:30,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:34:30,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:34:30,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:34:30,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:34:30,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:34:30,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:34:30,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:34:30,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:34:30,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:34:30,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:34:30,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:34:30,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:34:30,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:34:30,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:34:30,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:34:30,971 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-SemanticLbe.epf [2021-03-11 22:34:31,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:34:31,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:34:31,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:34:31,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:34:31,009 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:34:31,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:34:31,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:34:31,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:34:31,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:34:31,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:34:31,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:34:31,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:34:31,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:34:31,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:34:31,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:34:31,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:34:31,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:34:31,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:34:31,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:34:31,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:34:31,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:34:31,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:34:31,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:34:31,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:34:31,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:34:31,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:34:31,348 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 22:34:31,364 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 22:34:31,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-03-11 22:34:31,365 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-03-11 22:34:31,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:34:31,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 22:34:31,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:34:31,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:34:31,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:34:31,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:34:31,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:34:31,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:34:31,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:34:31,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/1) ... [2021-03-11 22:34:31,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:34:31,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:34:31,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:34:31,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:34:31,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (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 [2021-03-11 22:34:31,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-11 22:34:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-11 22:34:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-11 22:34:31,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-11 22:34:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-11 22:34:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-11 22:34:31,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 22:34:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:34:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:34:31,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-11 22:34:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-11 22:34:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-11 22:34:31,501 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:34:31,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:34:31,726 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-11 22:34:31,727 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:34:31 BoogieIcfgContainer [2021-03-11 22:34:31,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:34:31,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:34:31,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:34:31,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:34:31,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:31" (1/2) ... [2021-03-11 22:34:31,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467aaa56 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:34:31, skipping insertion in model container [2021-03-11 22:34:31,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:34:31" (2/2) ... [2021-03-11 22:34:31,733 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-03-11 22:34:31,737 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:34:31,741 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 22:34:31,741 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:34:31,763 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,763 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,764 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,764 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,765 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,765 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,765 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,765 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,766 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,767 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,767 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,767 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,768 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,768 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,768 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,768 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,773 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,775 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:31,776 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 22:34:31,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-11 22:34:31,825 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:34:31,825 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:34:31,826 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:34:31,826 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:34:31,826 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:34:31,826 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:34:31,826 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:34:31,826 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:34:31,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-11 22:34:31,909 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-11 22:34:31,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:31,914 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. [2021-03-11 22:34:31,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-11 22:34:31,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:31,921 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:34:31,940 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:31,943 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:31,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:31,963 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-11 22:34:31,963 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:31,965 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. [2021-03-11 22:34:31,966 INFO L116 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-11 22:34:32,386 INFO L131 LiptonReduction]: Checked pairs total: 1436 [2021-03-11 22:34:32,386 INFO L133 LiptonReduction]: Total number of compositions: 12 [2021-03-11 22:34:32,387 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 469 [2021-03-11 22:34:32,396 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-11 22:34:32,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:32,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:32,397 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 22:34:32,397 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:32,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash 176055231, now seen corresponding path program 1 times [2021-03-11 22:34:32,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:32,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957306934] [2021-03-11 22:34:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:32,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:32,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957306934] [2021-03-11 22:34:32,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:32,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 22:34:32,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196765673] [2021-03-11 22:34:32,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:32,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:32,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:32,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:32,518 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 58 [2021-03-11 22:34:32,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:32,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 58 [2021-03-11 22:34:32,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:32,584 INFO L129 PetriNetUnfolder]: 31/107 cut-off events. [2021-03-11 22:34:32,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:32,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 107 events. 31/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 363 event pairs, 4 based on Foata normal form. 41/137 useless extension candidates. Maximal degree in co-relation 153. Up to 30 conditions per place. [2021-03-11 22:34:32,589 INFO L132 encePairwiseOnDemand]: 46/58 looper letters, 8 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2021-03-11 22:34:32,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 107 flow [2021-03-11 22:34:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-11 22:34:32,608 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8390804597701149 [2021-03-11 22:34:32,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-11 22:34:32,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-11 22:34:32,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:32,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-11 22:34:32,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,624 INFO L185 Difference]: Start difference. First operand has 36 places, 31 transitions, 71 flow. Second operand 3 states and 146 transitions. [2021-03-11 22:34:32,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 107 flow [2021-03-11 22:34:32,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 22:34:32,631 INFO L241 Difference]: Finished difference. Result has 34 places, 34 transitions, 118 flow [2021-03-11 22:34:32,633 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2021-03-11 22:34:32,633 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2021-03-11 22:34:32,634 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 118 flow [2021-03-11 22:34:32,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,634 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:32,634 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:32,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:34:32,635 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1037054279, now seen corresponding path program 1 times [2021-03-11 22:34:32,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:32,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833331485] [2021-03-11 22:34:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:32,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:32,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:32,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833331485] [2021-03-11 22:34:32,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:32,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:32,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494201957] [2021-03-11 22:34:32,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:32,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:32,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:32,676 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:32,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:32,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:32,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:32,755 INFO L129 PetriNetUnfolder]: 102/253 cut-off events. [2021-03-11 22:34:32,756 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-11 22:34:32,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 253 events. 102/253 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1142 event pairs, 18 based on Foata normal form. 4/230 useless extension candidates. Maximal degree in co-relation 540. Up to 101 conditions per place. [2021-03-11 22:34:32,759 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 11 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2021-03-11 22:34:32,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 162 flow [2021-03-11 22:34:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-11 22:34:32,761 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-03-11 22:34:32,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-11 22:34:32,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-11 22:34:32,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:32,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-11 22:34:32,762 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) [2021-03-11 22:34:32,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,763 INFO L185 Difference]: Start difference. First operand has 34 places, 34 transitions, 118 flow. Second operand 3 states and 122 transitions. [2021-03-11 22:34:32,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 162 flow [2021-03-11 22:34:32,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:32,766 INFO L241 Difference]: Finished difference. Result has 36 places, 38 transitions, 150 flow [2021-03-11 22:34:32,766 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2021-03-11 22:34:32,767 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-03-11 22:34:32,767 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 150 flow [2021-03-11 22:34:32,767 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) [2021-03-11 22:34:32,767 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:32,767 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:32,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:34:32,768 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash 441830099, now seen corresponding path program 2 times [2021-03-11 22:34:32,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:32,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518081133] [2021-03-11 22:34:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:32,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:32,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:32,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518081133] [2021-03-11 22:34:32,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:32,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:32,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265369096] [2021-03-11 22:34:32,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:32,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:32,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:32,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:32,786 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:32,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 150 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) [2021-03-11 22:34:32,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:32,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:32,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:32,830 INFO L129 PetriNetUnfolder]: 91/242 cut-off events. [2021-03-11 22:34:32,830 INFO L130 PetriNetUnfolder]: For 107/114 co-relation queries the response was YES. [2021-03-11 22:34:32,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 242 events. 91/242 cut-off events. For 107/114 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 968 event pairs, 12 based on Foata normal form. 23/252 useless extension candidates. Maximal degree in co-relation 582. Up to 106 conditions per place. [2021-03-11 22:34:32,833 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 13 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2021-03-11 22:34:32,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 198 flow [2021-03-11 22:34:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-11 22:34:32,835 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2021-03-11 22:34:32,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-11 22:34:32,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-11 22:34:32,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:32,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-11 22:34:32,836 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) [2021-03-11 22:34:32,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,837 INFO L185 Difference]: Start difference. First operand has 36 places, 38 transitions, 150 flow. Second operand 3 states and 124 transitions. [2021-03-11 22:34:32,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 198 flow [2021-03-11 22:34:32,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:32,840 INFO L241 Difference]: Finished difference. Result has 38 places, 40 transitions, 180 flow [2021-03-11 22:34:32,840 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2021-03-11 22:34:32,840 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2021-03-11 22:34:32,840 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 180 flow [2021-03-11 22:34:32,841 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) [2021-03-11 22:34:32,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:32,841 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:32,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 22:34:32,841 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:32,842 INFO L82 PathProgramCache]: Analyzing trace with hash 140281354, now seen corresponding path program 1 times [2021-03-11 22:34:32,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:32,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766901902] [2021-03-11 22:34:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:32,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:32,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:32,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766901902] [2021-03-11 22:34:32,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:32,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:32,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513774283] [2021-03-11 22:34:32,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:32,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:32,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:32,864 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:32,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 180 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) [2021-03-11 22:34:32,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:32,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:32,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:32,907 INFO L129 PetriNetUnfolder]: 98/274 cut-off events. [2021-03-11 22:34:32,907 INFO L130 PetriNetUnfolder]: For 177/186 co-relation queries the response was YES. [2021-03-11 22:34:32,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 274 events. 98/274 cut-off events. For 177/186 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1175 event pairs, 14 based on Foata normal form. 5/267 useless extension candidates. Maximal degree in co-relation 730. Up to 86 conditions per place. [2021-03-11 22:34:32,910 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2021-03-11 22:34:32,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 252 flow [2021-03-11 22:34:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-11 22:34:32,912 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-03-11 22:34:32,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-11 22:34:32,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-11 22:34:32,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:32,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-11 22:34:32,913 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) [2021-03-11 22:34:32,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,914 INFO L185 Difference]: Start difference. First operand has 38 places, 40 transitions, 180 flow. Second operand 3 states and 122 transitions. [2021-03-11 22:34:32,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 252 flow [2021-03-11 22:34:32,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:32,917 INFO L241 Difference]: Finished difference. Result has 40 places, 44 transitions, 234 flow [2021-03-11 22:34:32,918 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2021-03-11 22:34:32,918 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2021-03-11 22:34:32,918 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 234 flow [2021-03-11 22:34:32,918 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) [2021-03-11 22:34:32,918 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:32,918 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:32,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 22:34:32,919 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:32,919 INFO L82 PathProgramCache]: Analyzing trace with hash -498960000, now seen corresponding path program 2 times [2021-03-11 22:34:32,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:32,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743409747] [2021-03-11 22:34:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:32,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:32,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:32,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:32,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743409747] [2021-03-11 22:34:32,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:32,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:32,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579871564] [2021-03-11 22:34:32,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:32,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:32,939 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:32,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 234 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) [2021-03-11 22:34:32,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:32,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:32,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:32,982 INFO L129 PetriNetUnfolder]: 87/260 cut-off events. [2021-03-11 22:34:32,982 INFO L130 PetriNetUnfolder]: For 394/408 co-relation queries the response was YES. [2021-03-11 22:34:32,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 260 events. 87/260 cut-off events. For 394/408 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1061 event pairs, 13 based on Foata normal form. 16/263 useless extension candidates. Maximal degree in co-relation 783. Up to 82 conditions per place. [2021-03-11 22:34:32,985 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2021-03-11 22:34:32,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 264 flow [2021-03-11 22:34:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-11 22:34:32,986 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2021-03-11 22:34:32,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-11 22:34:32,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-11 22:34:32,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:32,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-11 22:34:32,987 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) [2021-03-11 22:34:32,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:32,989 INFO L185 Difference]: Start difference. First operand has 40 places, 44 transitions, 234 flow. Second operand 3 states and 124 transitions. [2021-03-11 22:34:32,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 264 flow [2021-03-11 22:34:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:32,992 INFO L241 Difference]: Finished difference. Result has 40 places, 42 transitions, 216 flow [2021-03-11 22:34:32,992 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2021-03-11 22:34:32,992 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2021-03-11 22:34:32,992 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 216 flow [2021-03-11 22:34:32,992 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) [2021-03-11 22:34:32,993 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:32,993 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:32,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 22:34:32,993 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:32,993 INFO L82 PathProgramCache]: Analyzing trace with hash -930303852, now seen corresponding path program 1 times [2021-03-11 22:34:32,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:32,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864537816] [2021-03-11 22:34:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:33,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:33,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:33,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864537816] [2021-03-11 22:34:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:33,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:33,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952609916] [2021-03-11 22:34:33,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 22:34:33,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 22:34:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 22:34:33,036 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-11 22:34:33,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 216 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) [2021-03-11 22:34:33,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:33,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-11 22:34:33,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:33,110 INFO L129 PetriNetUnfolder]: 179/386 cut-off events. [2021-03-11 22:34:33,111 INFO L130 PetriNetUnfolder]: For 307/313 co-relation queries the response was YES. [2021-03-11 22:34:33,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 386 events. 179/386 cut-off events. For 307/313 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1436 event pairs, 22 based on Foata normal form. 12/383 useless extension candidates. Maximal degree in co-relation 1016. Up to 188 conditions per place. [2021-03-11 22:34:33,115 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-11 22:34:33,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 282 flow [2021-03-11 22:34:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 22:34:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 22:34:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-11 22:34:33,117 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2021-03-11 22:34:33,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-11 22:34:33,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-11 22:34:33,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:33,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-11 22:34:33,118 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) [2021-03-11 22:34:33,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,120 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,120 INFO L185 Difference]: Start difference. First operand has 40 places, 42 transitions, 216 flow. Second operand 4 states and 137 transitions. [2021-03-11 22:34:33,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 282 flow [2021-03-11 22:34:33,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:34:33,124 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 222 flow [2021-03-11 22:34:33,125 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-03-11 22:34:33,125 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2021-03-11 22:34:33,125 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 222 flow [2021-03-11 22:34:33,125 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) [2021-03-11 22:34:33,125 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:33,125 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:33,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 22:34:33,126 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2138433851, now seen corresponding path program 1 times [2021-03-11 22:34:33,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:33,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399411957] [2021-03-11 22:34:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:33,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:34:33,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:33,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399411957] [2021-03-11 22:34:33,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:33,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 22:34:33,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424758941] [2021-03-11 22:34:33,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 22:34:33,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:33,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 22:34:33,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 22:34:33,206 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2021-03-11 22:34:33,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 222 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) [2021-03-11 22:34:33,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:33,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2021-03-11 22:34:33,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:33,368 INFO L129 PetriNetUnfolder]: 185/416 cut-off events. [2021-03-11 22:34:33,369 INFO L130 PetriNetUnfolder]: For 373/387 co-relation queries the response was YES. [2021-03-11 22:34:33,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 416 events. 185/416 cut-off events. For 373/387 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1525 event pairs, 19 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 1226. Up to 128 conditions per place. [2021-03-11 22:34:33,389 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 15 selfloop transitions, 3 changer transitions 19/65 dead transitions. [2021-03-11 22:34:33,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 408 flow [2021-03-11 22:34:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:34:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:34:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-11 22:34:33,391 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5763546798029556 [2021-03-11 22:34:33,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-11 22:34:33,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-11 22:34:33,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:33,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-11 22:34:33,392 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) [2021-03-11 22:34:33,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,393 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,393 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 222 flow. Second operand 7 states and 234 transitions. [2021-03-11 22:34:33,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 408 flow [2021-03-11 22:34:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 391 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:33,396 INFO L241 Difference]: Finished difference. Result has 51 places, 42 transitions, 228 flow [2021-03-11 22:34:33,397 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2021-03-11 22:34:33,397 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2021-03-11 22:34:33,397 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 228 flow [2021-03-11 22:34:33,397 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) [2021-03-11 22:34:33,397 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:33,397 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:33,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 22:34:33,398 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:33,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1868742205, now seen corresponding path program 2 times [2021-03-11 22:34:33,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:33,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378488394] [2021-03-11 22:34:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:33,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:33,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:33,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378488394] [2021-03-11 22:34:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:33,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:33,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610871984] [2021-03-11 22:34:33,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 22:34:33,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:33,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 22:34:33,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 22:34:33,458 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-11 22:34:33,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 228 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) [2021-03-11 22:34:33,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:33,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-11 22:34:33,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:33,522 INFO L129 PetriNetUnfolder]: 159/370 cut-off events. [2021-03-11 22:34:33,522 INFO L130 PetriNetUnfolder]: For 492/505 co-relation queries the response was YES. [2021-03-11 22:34:33,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 370 events. 159/370 cut-off events. For 492/505 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1320 event pairs, 26 based on Foata normal form. 12/370 useless extension candidates. Maximal degree in co-relation 1154. Up to 190 conditions per place. [2021-03-11 22:34:33,525 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-11 22:34:33,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 297 flow [2021-03-11 22:34:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 22:34:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 22:34:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2021-03-11 22:34:33,527 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2021-03-11 22:34:33,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2021-03-11 22:34:33,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2021-03-11 22:34:33,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:33,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2021-03-11 22:34:33,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,528 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,528 INFO L185 Difference]: Start difference. First operand has 51 places, 42 transitions, 228 flow. Second operand 4 states and 136 transitions. [2021-03-11 22:34:33,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 297 flow [2021-03-11 22:34:33,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 283 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-11 22:34:33,531 INFO L241 Difference]: Finished difference. Result has 47 places, 43 transitions, 234 flow [2021-03-11 22:34:33,531 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2021-03-11 22:34:33,531 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2021-03-11 22:34:33,532 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 234 flow [2021-03-11 22:34:33,532 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) [2021-03-11 22:34:33,532 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:33,532 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:33,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 22:34:33,532 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:33,533 INFO L82 PathProgramCache]: Analyzing trace with hash -93905818, now seen corresponding path program 3 times [2021-03-11 22:34:33,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:33,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210185591] [2021-03-11 22:34:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:33,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:34:33,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:33,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:33,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210185591] [2021-03-11 22:34:33,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:33,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 22:34:33,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63680900] [2021-03-11 22:34:33,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 22:34:33,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:33,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 22:34:33,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 22:34:33,579 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2021-03-11 22:34:33,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 234 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) [2021-03-11 22:34:33,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:33,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2021-03-11 22:34:33,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:33,682 INFO L129 PetriNetUnfolder]: 75/171 cut-off events. [2021-03-11 22:34:33,682 INFO L130 PetriNetUnfolder]: For 252/256 co-relation queries the response was YES. [2021-03-11 22:34:33,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 171 events. 75/171 cut-off events. For 252/256 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 471 event pairs, 4 based on Foata normal form. 8/177 useless extension candidates. Maximal degree in co-relation 596. Up to 60 conditions per place. [2021-03-11 22:34:33,683 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2021-03-11 22:34:33,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 361 flow [2021-03-11 22:34:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:34:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:34:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2021-03-11 22:34:33,685 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5738916256157636 [2021-03-11 22:34:33,685 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2021-03-11 22:34:33,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2021-03-11 22:34:33,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:33,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2021-03-11 22:34:33,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:33,687 INFO L185 Difference]: Start difference. First operand has 47 places, 43 transitions, 234 flow. Second operand 7 states and 233 transitions. [2021-03-11 22:34:33,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 361 flow [2021-03-11 22:34:33,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 316 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 22:34:33,689 INFO L241 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2021-03-11 22:34:33,689 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2021-03-11 22:34:33,689 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2021-03-11 22:34:33,689 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2021-03-11 22:34:33,690 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) [2021-03-11 22:34:33,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 22:34:33,693 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:34:33 BasicIcfg [2021-03-11 22:34:33,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:34:33,694 INFO L168 Benchmark]: Toolchain (without parser) took 2308.70 ms. Allocated memory is still 325.1 MB. Free memory was 305.4 MB in the beginning and 259.4 MB in the end (delta: 46.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:33,694 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory was 306.6 MB in the beginning and 306.5 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:34:33,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.36 ms. Allocated memory is still 325.1 MB. Free memory was 304.9 MB in the beginning and 303.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:34:33,695 INFO L168 Benchmark]: Boogie Preprocessor took 14.58 ms. Allocated memory is still 325.1 MB. Free memory was 303.5 MB in the beginning and 302.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:33,695 INFO L168 Benchmark]: RCFGBuilder took 298.55 ms. Allocated memory is still 325.1 MB. Free memory was 302.5 MB in the beginning and 290.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:33,696 INFO L168 Benchmark]: TraceAbstraction took 1964.79 ms. Allocated memory is still 325.1 MB. Free memory was 289.7 MB in the beginning and 259.4 MB in the end (delta: 30.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:33,697 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 0.10 ms. Allocated memory is still 325.1 MB. Free memory was 306.6 MB in the beginning and 306.5 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.36 ms. Allocated memory is still 325.1 MB. Free memory was 304.9 MB in the beginning and 303.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.58 ms. Allocated memory is still 325.1 MB. Free memory was 303.5 MB in the beginning and 302.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 298.55 ms. Allocated memory is still 325.1 MB. Free memory was 302.5 MB in the beginning and 290.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1964.79 ms. Allocated memory is still 325.1 MB. Free memory was 289.7 MB in the beginning and 259.4 MB in the end (delta: 30.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 443.4ms, 48 PlacesBefore, 36 PlacesAfterwards, 43 TransitionsBefore, 31 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 1436 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 682, positive: 608, positive conditional: 0, positive unconditional: 608, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 391, positive: 359, positive conditional: 0, positive unconditional: 359, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 391, positive: 339, positive conditional: 0, positive unconditional: 339, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 165, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 682, positive: 249, positive conditional: 0, positive unconditional: 249, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 391, unknown conditional: 0, unknown unconditional: 391] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - 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: 1868.8ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 842.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 566.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 61 SDslu, 9 SDs, 0 SdLazy, 222 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 184.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 162.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.0ms SsaConstructionTime, 58.7ms SatisfiabilityAnalysisTime, 248.1ms InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...