/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:30:25,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:30:25,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:30:25,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:30:25,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:30:25,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:30:25,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:30:25,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:30:25,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:30:25,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:30:25,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:30:25,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:30:25,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:30:25,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:30:25,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:30:25,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:30:25,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:30:25,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:30:25,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:30:25,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:30:25,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:30:25,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:30:25,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:30:25,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:30:25,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:30:25,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:30:25,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:30:25,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:30:25,668 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-VariableLbe.epf [2021-03-24 13:30:25,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:30:25,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:30:25,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:30:25,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:30:25,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:30:25,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:30:25,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:30:25,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:30:25,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:30:25,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:30:25,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:30:25,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:30:25,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:30:25,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:30:25,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:30:25,966 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:30:25,969 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:30:25,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-03-24 13:30:25,970 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-03-24 13:30:26,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:30:26,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:30:26,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:30:26,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:30:26,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:30:26,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:30:26,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:30:26,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:30:26,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:30:26,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... [2021-03-24 13:30:26,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:30:26,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:30:26,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:30:26,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:30:26,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:30:26,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-24 13:30:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-24 13:30:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-24 13:30:26,131 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-24 13:30:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-24 13:30:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-24 13:30:26,131 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:30:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:30:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:30:26,132 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-24 13:30:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-24 13:30:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-24 13:30:26,133 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:30:26,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:30:26,369 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-24 13:30:26,370 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:30:26 BoogieIcfgContainer [2021-03-24 13:30:26,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:30:26,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:30:26,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:30:26,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:30:26,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:26" (1/2) ... [2021-03-24 13:30:26,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd3b950 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:30:26, skipping insertion in model container [2021-03-24 13:30:26,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:30:26" (2/2) ... [2021-03-24 13:30:26,376 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-03-24 13:30:26,381 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:30:26,384 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 13:30:26,384 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:30:26,437 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,437 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,438 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,438 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,438 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,439 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,439 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,439 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,440 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,440 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,441 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,441 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,441 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,441 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,441 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,442 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,447 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,450 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:26,451 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:30:26,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 13:30:26,510 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:30:26,510 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:30:26,510 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:30:26,510 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:30:26,510 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:30:26,510 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:30:26,510 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:30:26,510 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:30:26,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-24 13:30:26,557 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 13:30:26,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:26,561 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. [2021-03-24 13:30:26,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-24 13:30:26,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:26,567 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:30:26,578 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:26,585 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:26,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:26,606 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 13:30:26,606 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:26,606 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. [2021-03-24 13:30:26,609 INFO L142 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-24 13:30:26,742 INFO L154 LiptonReduction]: Checked pairs total: 1916 [2021-03-24 13:30:26,743 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-24 13:30:26,745 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 179 [2021-03-24 13:30:26,758 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-24 13:30:26,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:26,759 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,759 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,760 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 926283158, now seen corresponding path program 1 times [2021-03-24 13:30:26,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410661799] [2021-03-24 13:30:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410661799] [2021-03-24 13:30:26,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 13:30:26,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835874960] [2021-03-24 13:30:26,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:26,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:26,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:26,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 51 [2021-03-24 13:30:26,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 51 [2021-03-24 13:30:26,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,946 INFO L129 PetriNetUnfolder]: 31/132 cut-off events. [2021-03-24 13:30:26,946 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:26,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 132 events. 31/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 488 event pairs, 4 based on Foata normal form. 41/162 useless extension candidates. Maximal degree in co-relation 177. Up to 30 conditions per place. [2021-03-24 13:30:26,949 INFO L132 encePairwiseOnDemand]: 39/51 looper letters, 8 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2021-03-24 13:30:26,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 121 flow [2021-03-24 13:30:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2021-03-24 13:30:26,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8366013071895425 [2021-03-24 13:30:26,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2021-03-24 13:30:26,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2021-03-24 13:30:26,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2021-03-24 13:30:26,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,969 INFO L185 Difference]: Start difference. First operand has 43 places, 38 transitions, 85 flow. Second operand 3 states and 128 transitions. [2021-03-24 13:30:26,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 121 flow [2021-03-24 13:30:26,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:26,974 INFO L241 Difference]: Finished difference. Result has 41 places, 41 transitions, 132 flow [2021-03-24 13:30:26,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2021-03-24 13:30:26,976 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2021-03-24 13:30:26,977 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 132 flow [2021-03-24 13:30:26,977 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) [2021-03-24 13:30:26,977 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,977 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:30:26,978 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash 431960874, now seen corresponding path program 1 times [2021-03-24 13:30:26,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351974444] [2021-03-24 13:30:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351974444] [2021-03-24 13:30:27,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:27,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89705716] [2021-03-24 13:30:27,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:27,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:27,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:27,003 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 51 [2021-03-24 13:30:27,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-03-24 13:30:27,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 51 [2021-03-24 13:30:27,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,061 INFO L129 PetriNetUnfolder]: 98/290 cut-off events. [2021-03-24 13:30:27,061 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-24 13:30:27,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 290 events. 98/290 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1391 event pairs, 13 based on Foata normal form. 4/270 useless extension candidates. Maximal degree in co-relation 569. Up to 115 conditions per place. [2021-03-24 13:30:27,065 INFO L132 encePairwiseOnDemand]: 41/51 looper letters, 13 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2021-03-24 13:30:27,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 192 flow [2021-03-24 13:30:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-24 13:30:27,067 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7973856209150327 [2021-03-24 13:30:27,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-24 13:30:27,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-24 13:30:27,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-24 13:30:27,069 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) [2021-03-24 13:30:27,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,070 INFO L185 Difference]: Start difference. First operand has 41 places, 41 transitions, 132 flow. Second operand 3 states and 122 transitions. [2021-03-24 13:30:27,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 192 flow [2021-03-24 13:30:27,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:27,074 INFO L241 Difference]: Finished difference. Result has 43 places, 48 transitions, 182 flow [2021-03-24 13:30:27,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=43, PETRI_TRANSITIONS=48} [2021-03-24 13:30:27,075 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2021-03-24 13:30:27,075 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 48 transitions, 182 flow [2021-03-24 13:30:27,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-03-24 13:30:27,075 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,075 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:30:27,076 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1043136414, now seen corresponding path program 2 times [2021-03-24 13:30:27,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614675218] [2021-03-24 13:30:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:27,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614675218] [2021-03-24 13:30:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:27,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540357500] [2021-03-24 13:30:27,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:27,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:27,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:27,096 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 51 [2021-03-24 13:30:27,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-03-24 13:30:27,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 51 [2021-03-24 13:30:27,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,141 INFO L129 PetriNetUnfolder]: 86/288 cut-off events. [2021-03-24 13:30:27,141 INFO L130 PetriNetUnfolder]: For 113/126 co-relation queries the response was YES. [2021-03-24 13:30:27,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 288 events. 86/288 cut-off events. For 113/126 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1268 event pairs, 19 based on Foata normal form. 13/291 useless extension candidates. Maximal degree in co-relation 637. Up to 110 conditions per place. [2021-03-24 13:30:27,145 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 14 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2021-03-24 13:30:27,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 216 flow [2021-03-24 13:30:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2021-03-24 13:30:27,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2021-03-24 13:30:27,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2021-03-24 13:30:27,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2021-03-24 13:30:27,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2021-03-24 13:30:27,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-03-24 13:30:27,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,149 INFO L185 Difference]: Start difference. First operand has 43 places, 48 transitions, 182 flow. Second operand 3 states and 118 transitions. [2021-03-24 13:30:27,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 216 flow [2021-03-24 13:30:27,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:27,153 INFO L241 Difference]: Finished difference. Result has 44 places, 47 transitions, 181 flow [2021-03-24 13:30:27,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2021-03-24 13:30:27,153 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2021-03-24 13:30:27,153 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 181 flow [2021-03-24 13:30:27,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-03-24 13:30:27,154 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,154 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:30:27,154 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,155 INFO L82 PathProgramCache]: Analyzing trace with hash 838218827, now seen corresponding path program 1 times [2021-03-24 13:30:27,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464444862] [2021-03-24 13:30:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:27,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464444862] [2021-03-24 13:30:27,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:27,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019107328] [2021-03-24 13:30:27,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:27,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:27,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:27,178 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 51 [2021-03-24 13:30:27,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 181 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) [2021-03-24 13:30:27,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 51 [2021-03-24 13:30:27,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,223 INFO L129 PetriNetUnfolder]: 94/325 cut-off events. [2021-03-24 13:30:27,223 INFO L130 PetriNetUnfolder]: For 144/159 co-relation queries the response was YES. [2021-03-24 13:30:27,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 325 events. 94/325 cut-off events. For 144/159 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1476 event pairs, 16 based on Foata normal form. 7/322 useless extension candidates. Maximal degree in co-relation 741. Up to 94 conditions per place. [2021-03-24 13:30:27,227 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 14 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2021-03-24 13:30:27,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 252 flow [2021-03-24 13:30:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2021-03-24 13:30:27,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-24 13:30:27,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2021-03-24 13:30:27,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2021-03-24 13:30:27,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2021-03-24 13:30:27,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-03-24 13:30:27,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,235 INFO L185 Difference]: Start difference. First operand has 44 places, 47 transitions, 181 flow. Second operand 3 states and 119 transitions. [2021-03-24 13:30:27,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 252 flow [2021-03-24 13:30:27,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:27,246 INFO L241 Difference]: Finished difference. Result has 47 places, 51 transitions, 244 flow [2021-03-24 13:30:27,246 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2021-03-24 13:30:27,247 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2021-03-24 13:30:27,252 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 244 flow [2021-03-24 13:30:27,252 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) [2021-03-24 13:30:27,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:30:27,253 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,254 INFO L82 PathProgramCache]: Analyzing trace with hash 629780769, now seen corresponding path program 2 times [2021-03-24 13:30:27,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710191491] [2021-03-24 13:30:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:27,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710191491] [2021-03-24 13:30:27,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112120340] [2021-03-24 13:30:27,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:27,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:27,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:27,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 51 [2021-03-24 13:30:27,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 244 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) [2021-03-24 13:30:27,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 51 [2021-03-24 13:30:27,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,359 INFO L129 PetriNetUnfolder]: 86/311 cut-off events. [2021-03-24 13:30:27,359 INFO L130 PetriNetUnfolder]: For 398/420 co-relation queries the response was YES. [2021-03-24 13:30:27,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 311 events. 86/311 cut-off events. For 398/420 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1261 event pairs, 13 based on Foata normal form. 17/313 useless extension candidates. Maximal degree in co-relation 820. Up to 82 conditions per place. [2021-03-24 13:30:27,362 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 14 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2021-03-24 13:30:27,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 276 flow [2021-03-24 13:30:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-03-24 13:30:27,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7908496732026143 [2021-03-24 13:30:27,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-03-24 13:30:27,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-03-24 13:30:27,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-03-24 13:30:27,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,367 INFO L185 Difference]: Start difference. First operand has 47 places, 51 transitions, 244 flow. Second operand 3 states and 121 transitions. [2021-03-24 13:30:27,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 276 flow [2021-03-24 13:30:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:27,371 INFO L241 Difference]: Finished difference. Result has 47 places, 49 transitions, 228 flow [2021-03-24 13:30:27,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2021-03-24 13:30:27,372 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2021-03-24 13:30:27,372 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 228 flow [2021-03-24 13:30:27,372 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) [2021-03-24 13:30:27,372 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,372 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:30:27,372 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash -702349460, now seen corresponding path program 1 times [2021-03-24 13:30:27,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350287747] [2021-03-24 13:30:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:27,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350287747] [2021-03-24 13:30:27,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:27,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833028471] [2021-03-24 13:30:27,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 13:30:27,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 13:30:27,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 13:30:27,447 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 51 [2021-03-24 13:30:27,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 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) [2021-03-24 13:30:27,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 51 [2021-03-24 13:30:27,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,534 INFO L129 PetriNetUnfolder]: 220/523 cut-off events. [2021-03-24 13:30:27,534 INFO L130 PetriNetUnfolder]: For 217/224 co-relation queries the response was YES. [2021-03-24 13:30:27,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 523 events. 220/523 cut-off events. For 217/224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2118 event pairs, 40 based on Foata normal form. 18/520 useless extension candidates. Maximal degree in co-relation 1207. Up to 240 conditions per place. [2021-03-24 13:30:27,540 INFO L132 encePairwiseOnDemand]: 47/51 looper letters, 14 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2021-03-24 13:30:27,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 272 flow [2021-03-24 13:30:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 13:30:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 13:30:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2021-03-24 13:30:27,542 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2021-03-24 13:30:27,542 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 138 transitions. [2021-03-24 13:30:27,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 138 transitions. [2021-03-24 13:30:27,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 138 transitions. [2021-03-24 13:30:27,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2021-03-24 13:30:27,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2021-03-24 13:30:27,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2021-03-24 13:30:27,544 INFO L185 Difference]: Start difference. First operand has 47 places, 49 transitions, 228 flow. Second operand 4 states and 138 transitions. [2021-03-24 13:30:27,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 272 flow [2021-03-24 13:30:27,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:27,550 INFO L241 Difference]: Finished difference. Result has 50 places, 50 transitions, 234 flow [2021-03-24 13:30:27,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2021-03-24 13:30:27,550 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2021-03-24 13:30:27,550 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 234 flow [2021-03-24 13:30:27,551 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) [2021-03-24 13:30:27,551 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,551 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:30:27,551 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1112458897, now seen corresponding path program 1 times [2021-03-24 13:30:27,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835073776] [2021-03-24 13:30:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:27,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835073776] [2021-03-24 13:30:27,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:30:27,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576408671] [2021-03-24 13:30:27,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 13:30:27,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 13:30:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-24 13:30:27,634 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2021-03-24 13:30:27,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 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) [2021-03-24 13:30:27,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2021-03-24 13:30:27,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,792 INFO L129 PetriNetUnfolder]: 236/590 cut-off events. [2021-03-24 13:30:27,793 INFO L130 PetriNetUnfolder]: For 255/266 co-relation queries the response was YES. [2021-03-24 13:30:27,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 590 events. 236/590 cut-off events. For 255/266 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2476 event pairs, 31 based on Foata normal form. 17/593 useless extension candidates. Maximal degree in co-relation 1538. Up to 161 conditions per place. [2021-03-24 13:30:27,798 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 16 selfloop transitions, 3 changer transitions 15/70 dead transitions. [2021-03-24 13:30:27,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 371 flow [2021-03-24 13:30:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 13:30:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 13:30:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-03-24 13:30:27,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6582633053221288 [2021-03-24 13:30:27,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-03-24 13:30:27,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-03-24 13:30:27,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-03-24 13:30:27,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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) [2021-03-24 13:30:27,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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) [2021-03-24 13:30:27,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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) [2021-03-24 13:30:27,803 INFO L185 Difference]: Start difference. First operand has 50 places, 50 transitions, 234 flow. Second operand 7 states and 235 transitions. [2021-03-24 13:30:27,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 371 flow [2021-03-24 13:30:27,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 354 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:27,807 INFO L241 Difference]: Finished difference. Result has 58 places, 50 transitions, 248 flow [2021-03-24 13:30:27,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2021-03-24 13:30:27,808 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2021-03-24 13:30:27,808 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 248 flow [2021-03-24 13:30:27,808 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) [2021-03-24 13:30:27,808 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,808 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:30:27,809 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,810 INFO L82 PathProgramCache]: Analyzing trace with hash -916074307, now seen corresponding path program 2 times [2021-03-24 13:30:27,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5062765] [2021-03-24 13:30:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:27,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:27,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5062765] [2021-03-24 13:30:27,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:27,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:27,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769071610] [2021-03-24 13:30:27,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 13:30:27,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 13:30:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 13:30:27,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 51 [2021-03-24 13:30:27,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2021-03-24 13:30:27,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:27,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 51 [2021-03-24 13:30:27,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,930 INFO L129 PetriNetUnfolder]: 196/500 cut-off events. [2021-03-24 13:30:27,930 INFO L130 PetriNetUnfolder]: For 371/383 co-relation queries the response was YES. [2021-03-24 13:30:27,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 500 events. 196/500 cut-off events. For 371/383 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1904 event pairs, 39 based on Foata normal form. 17/502 useless extension candidates. Maximal degree in co-relation 1408. Up to 239 conditions per place. [2021-03-24 13:30:27,935 INFO L132 encePairwiseOnDemand]: 47/51 looper letters, 12 selfloop transitions, 3 changer transitions 4/56 dead transitions. [2021-03-24 13:30:27,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 312 flow [2021-03-24 13:30:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 13:30:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 13:30:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2021-03-24 13:30:27,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2021-03-24 13:30:27,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 138 transitions. [2021-03-24 13:30:27,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 138 transitions. [2021-03-24 13:30:27,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 138 transitions. [2021-03-24 13:30:27,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2021-03-24 13:30:27,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2021-03-24 13:30:27,938 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2021-03-24 13:30:27,938 INFO L185 Difference]: Start difference. First operand has 58 places, 50 transitions, 248 flow. Second operand 4 states and 138 transitions. [2021-03-24 13:30:27,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 312 flow [2021-03-24 13:30:27,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 302 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 13:30:27,942 INFO L241 Difference]: Finished difference. Result has 55 places, 51 transitions, 258 flow [2021-03-24 13:30:27,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2021-03-24 13:30:27,942 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2021-03-24 13:30:27,942 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 258 flow [2021-03-24 13:30:27,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2021-03-24 13:30:27,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:27,943 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:27,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:30:27,943 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:27,943 INFO L82 PathProgramCache]: Analyzing trace with hash -480963574, now seen corresponding path program 3 times [2021-03-24 13:30:27,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:27,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2938004] [2021-03-24 13:30:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:27,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:27,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:27,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:27,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:27,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:28,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2938004] [2021-03-24 13:30:28,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:30:28,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604986505] [2021-03-24 13:30:28,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 13:30:28,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 13:30:28,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-24 13:30:28,009 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2021-03-24 13:30:28,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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) [2021-03-24 13:30:28,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2021-03-24 13:30:28,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,138 INFO L129 PetriNetUnfolder]: 131/335 cut-off events. [2021-03-24 13:30:28,139 INFO L130 PetriNetUnfolder]: For 355/365 co-relation queries the response was YES. [2021-03-24 13:30:28,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 335 events. 131/335 cut-off events. For 355/365 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1229 event pairs, 17 based on Foata normal form. 15/344 useless extension candidates. Maximal degree in co-relation 1076. Up to 112 conditions per place. [2021-03-24 13:30:28,141 INFO L132 encePairwiseOnDemand]: 43/51 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2021-03-24 13:30:28,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 382 flow [2021-03-24 13:30:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 13:30:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 13:30:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-03-24 13:30:28,142 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6582633053221288 [2021-03-24 13:30:28,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-03-24 13:30:28,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-03-24 13:30:28,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-03-24 13:30:28,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 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) [2021-03-24 13:30:28,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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) [2021-03-24 13:30:28,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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) [2021-03-24 13:30:28,144 INFO L185 Difference]: Start difference. First operand has 55 places, 51 transitions, 258 flow. Second operand 7 states and 235 transitions. [2021-03-24 13:30:28,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 382 flow [2021-03-24 13:30:28,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 349 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 13:30:28,147 INFO L241 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2021-03-24 13:30:28,148 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2021-03-24 13:30:28,148 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2021-03-24 13:30:28,148 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2021-03-24 13:30:28,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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) [2021-03-24 13:30:28,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 13:30:28,151 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:30:28 BasicIcfg [2021-03-24 13:30:28,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:30:28,154 INFO L168 Benchmark]: Toolchain (without parser) took 2137.61 ms. Allocated memory is still 358.6 MB. Free memory was 339.0 MB in the beginning and 319.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:28,155 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory was 340.1 MB in the beginning and 340.0 MB in the end (delta: 75.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:30:28,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.22 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 337.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:28,155 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 ms. Allocated memory is still 358.6 MB. Free memory was 337.4 MB in the beginning and 336.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:30:28,192 INFO L168 Benchmark]: RCFGBuilder took 310.02 ms. Allocated memory is still 358.6 MB. Free memory was 336.3 MB in the beginning and 324.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:28,193 INFO L168 Benchmark]: TraceAbstraction took 1779.90 ms. Allocated memory is still 358.6 MB. Free memory was 323.5 MB in the beginning and 319.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:28,196 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 0.12 ms. Allocated memory is still 358.6 MB. Free memory was 340.1 MB in the beginning and 340.0 MB in the end (delta: 75.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.22 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 337.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.61 ms. Allocated memory is still 358.6 MB. Free memory was 337.4 MB in the beginning and 336.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 310.02 ms. Allocated memory is still 358.6 MB. Free memory was 336.3 MB in the beginning and 324.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1779.90 ms. Allocated memory is still 358.6 MB. Free memory was 323.5 MB in the beginning and 319.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 158.0ms, 48 PlacesBefore, 43 PlacesAfterwards, 43 TransitionsBefore, 38 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1916 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1153, positive: 1057, positive conditional: 0, positive unconditional: 1057, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 239, positive: 220, positive conditional: 0, positive unconditional: 220, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 239, positive: 220, positive conditional: 0, positive unconditional: 220, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1153, positive: 837, positive conditional: 0, positive unconditional: 837, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 239, unknown conditional: 0, unknown unconditional: 239] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - PositiveResult [Line: 78]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 57]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1642.6ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 876.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 240.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 62 SDslu, 13 SDs, 0 SdLazy, 235 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 187.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=8, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.4ms SsaConstructionTime, 92.1ms SatisfiabilityAnalysisTime, 264.8ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...