/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:50:55,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:50:55,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:50:55,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:50:55,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:50:55,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:50:55,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:50:55,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:50:55,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:50:55,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:50:55,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:50:55,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:50:55,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:50:55,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:50:55,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:50:55,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:50:55,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:50:55,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:50:55,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:50:55,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:50:55,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:50:55,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:50:55,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:50:55,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:50:55,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 21:50:55,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 21:50:55,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 21:50:55,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 21:50:55,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 21:50:55,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 21:50:55,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 21:50:55,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 21:50:55,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 21:50:55,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 21:50:55,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 21:50:55,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 21:50:55,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 21:50:55,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 21:50:55,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 21:50:55,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 21:50:55,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 21:50:55,888 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-NoLbe.epf [2021-08-12 21:50:55,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:50:55,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:50:55,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:50:55,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:50:55,925 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:50:55,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:50:55,925 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:50:55,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:50:55,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:50:55,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:50:55,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:50:55,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:50:55,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:50:55,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:50:55,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:50:55,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:50:55,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:50:55,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:50:55,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:50:55,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:50:55,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:50:55,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:50:55,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:50:56,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:50:56,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:50:56,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:50:56,266 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 21:50:56,267 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 21:50:56,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl [2021-08-12 21:50:56,268 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl' [2021-08-12 21:50:56,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:50:56,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 21:50:56,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:50:56,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:50:56,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:50:56,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:50:56,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:50:56,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:50:56,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:50:56,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/1) ... [2021-08-12 21:50:56,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:50:56,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:50:56,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:50:56,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:50:56,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (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 [2021-08-12 21:50:56,407 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-08-12 21:50:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-12 21:50:56,409 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-12 21:50:56,409 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 21:50:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:50:56,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:50:56,410 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 21:50:56,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:50:56,535 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 21:50:56,536 INFO L202 PluginConnector]: Adding new model ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:50:56 BoogieIcfgContainer [2021-08-12 21:50:56,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:50:56,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:50:56,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:50:56,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:50:56,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:50:56" (1/2) ... [2021-08-12 21:50:56,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7713ac and model type ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:50:56, skipping insertion in model container [2021-08-12 21:50:56,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:50:56" (2/2) ... [2021-08-12 21:50:56,543 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkJoinExplained.bpl [2021-08-12 21:50:56,547 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:50:56,548 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-12 21:50:56,549 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:50:56,567 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,568 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,568 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,568 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,569 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,569 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,569 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,569 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,570 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,570 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,570 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,571 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,571 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,571 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,572 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,572 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,574 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,598 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:50:56,606 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-12 21:50:56,638 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-12 21:50:56,656 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:50:56,657 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:50:56,657 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:50:56,657 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:50:56,657 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:50:56,657 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:50:56,657 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:50:56,657 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:50:56,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 84 flow [2021-08-12 21:50:56,688 INFO L129 PetriNetUnfolder]: 3/33 cut-off events. [2021-08-12 21:50:56,689 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-12 21:50:56,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 33 events. 3/33 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2021-08-12 21:50:56,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 84 flow [2021-08-12 21:50:56,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 72 flow [2021-08-12 21:50:56,705 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-08-12 21:50:56,706 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-12 21:50:56,706 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:56,707 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:56,707 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash -211848501, now seen corresponding path program 1 times [2021-08-12 21:50:56,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:56,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167071650] [2021-08-12 21:50:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:56,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:56,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:56,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:56,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:56,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:56,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:56,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167071650] [2021-08-12 21:50:56,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167071650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:56,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:56,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:50:56,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297350985] [2021-08-12 21:50:56,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:50:56,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:50:56,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:50:56,860 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 31 [2021-08-12 21:50:56,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-08-12 21:50:56,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:56,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 31 [2021-08-12 21:50:56,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:56,885 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-08-12 21:50:56,885 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-12 21:50:56,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 28 events. 2/28 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2021-08-12 21:50:56,887 INFO L132 encePairwiseOnDemand]: 29/31 looper letters, 1 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-08-12 21:50:56,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 70 flow [2021-08-12 21:50:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:50:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:50:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2021-08-12 21:50:56,903 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2021-08-12 21:50:56,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2021-08-12 21:50:56,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2021-08-12 21:50:56,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:56,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2021-08-12 21:50:56,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-08-12 21:50:56,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:56,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:56,917 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-08-12 21:50:56,928 INFO L482 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 70 flow [2021-08-12 21:50:56,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-08-12 21:50:56,928 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:56,929 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:56,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:50:56,929 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:56,931 INFO L82 PathProgramCache]: Analyzing trace with hash 686358403, now seen corresponding path program 1 times [2021-08-12 21:50:56,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:56,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620162536] [2021-08-12 21:50:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:56,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:56,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:56,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:56,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:56,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:56,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:56,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:56,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620162536] [2021-08-12 21:50:56,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620162536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:56,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:56,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:50:56,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384818534] [2021-08-12 21:50:56,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:50:56,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:56,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:50:56,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:50:56,988 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 31 [2021-08-12 21:50:56,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-08-12 21:50:56,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:56,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 31 [2021-08-12 21:50:56,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:57,005 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2021-08-12 21:50:57,005 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-08-12 21:50:57,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 25 events. 1/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2021-08-12 21:50:57,006 INFO L132 encePairwiseOnDemand]: 29/31 looper letters, 1 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2021-08-12 21:50:57,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 68 flow [2021-08-12 21:50:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:50:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:50:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2021-08-12 21:50:57,013 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2021-08-12 21:50:57,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2021-08-12 21:50:57,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2021-08-12 21:50:57,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:57,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2021-08-12 21:50:57,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-08-12 21:50:57,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,019 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-08-12 21:50:57,019 INFO L482 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 68 flow [2021-08-12 21:50:57,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-08-12 21:50:57,019 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:57,020 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:57,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:50:57,020 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:57,021 INFO L82 PathProgramCache]: Analyzing trace with hash -230697950, now seen corresponding path program 1 times [2021-08-12 21:50:57,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:57,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384325941] [2021-08-12 21:50:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:57,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:57,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,097 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-12 21:50:57,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:57,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:57,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384325941] [2021-08-12 21:50:57,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384325941] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:57,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:57,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:50:57,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364082969] [2021-08-12 21:50:57,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:50:57,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:57,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:50:57,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:50:57,117 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-08-12 21:50:57,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-08-12 21:50:57,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:57,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-08-12 21:50:57,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:57,174 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2021-08-12 21:50:57,174 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-08-12 21:50:57,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 32 events. 4/32 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 62 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 49. Up to 5 conditions per place. [2021-08-12 21:50:57,176 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 6 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-08-12 21:50:57,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 103 flow [2021-08-12 21:50:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:50:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:50:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2021-08-12 21:50:57,182 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8193548387096774 [2021-08-12 21:50:57,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 127 transitions. [2021-08-12 21:50:57,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 127 transitions. [2021-08-12 21:50:57,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:57,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 127 transitions. [2021-08-12 21:50:57,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2021-08-12 21:50:57,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,189 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-08-12 21:50:57,189 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 103 flow [2021-08-12 21:50:57,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-08-12 21:50:57,190 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:57,190 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:57,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 21:50:57,191 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash -182266038, now seen corresponding path program 1 times [2021-08-12 21:50:57,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:57,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461912992] [2021-08-12 21:50:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:57,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:57,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:50:57,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:57,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:57,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461912992] [2021-08-12 21:50:57,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461912992] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:57,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:57,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:50:57,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651536903] [2021-08-12 21:50:57,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:50:57,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:57,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:50:57,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:50:57,233 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 31 [2021-08-12 21:50:57,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-08-12 21:50:57,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:57,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 31 [2021-08-12 21:50:57,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:57,246 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-08-12 21:50:57,246 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-08-12 21:50:57,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 16 events. 0/16 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 3/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-12 21:50:57,247 INFO L132 encePairwiseOnDemand]: 28/31 looper letters, 0 selfloop transitions, 1 changer transitions 1/16 dead transitions. [2021-08-12 21:50:57,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 16 transitions, 59 flow [2021-08-12 21:50:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:50:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:50:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2021-08-12 21:50:57,248 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2021-08-12 21:50:57,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2021-08-12 21:50:57,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2021-08-12 21:50:57,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:57,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2021-08-12 21:50:57,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-08-12 21:50:57,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,251 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-08-12 21:50:57,251 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 16 transitions, 59 flow [2021-08-12 21:50:57,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-08-12 21:50:57,251 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:57,251 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:57,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 21:50:57,252 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:57,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:57,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1438298200, now seen corresponding path program 1 times [2021-08-12 21:50:57,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:57,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214297669] [2021-08-12 21:50:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:57,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:57,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-12 21:50:57,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:57,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:57,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214297669] [2021-08-12 21:50:57,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214297669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:57,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:57,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:50:57,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724426356] [2021-08-12 21:50:57,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:50:57,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:57,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:50:57,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:50:57,326 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-08-12 21:50:57,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 16 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-08-12 21:50:57,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:57,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-08-12 21:50:57,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:57,357 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-08-12 21:50:57,357 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-08-12 21:50:57,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 22 events. 2/22 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 35. Up to 7 conditions per place. [2021-08-12 21:50:57,359 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 2 selfloop transitions, 4 changer transitions 2/19 dead transitions. [2021-08-12 21:50:57,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 19 transitions, 81 flow [2021-08-12 21:50:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 21:50:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-12 21:50:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2021-08-12 21:50:57,361 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8145161290322581 [2021-08-12 21:50:57,361 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 101 transitions. [2021-08-12 21:50:57,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 101 transitions. [2021-08-12 21:50:57,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:57,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 101 transitions. [2021-08-12 21:50:57,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.25) internal successors, (101), 4 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) [2021-08-12 21:50:57,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,362 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-08-12 21:50:57,362 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 81 flow [2021-08-12 21:50:57,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-08-12 21:50:57,363 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:57,363 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:57,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 21:50:57,363 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:57,364 INFO L82 PathProgramCache]: Analyzing trace with hash -205283794, now seen corresponding path program 1 times [2021-08-12 21:50:57,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:57,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940812387] [2021-08-12 21:50:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:57,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:57,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-12 21:50:57,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:57,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:57,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940812387] [2021-08-12 21:50:57,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940812387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:57,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:57,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:50:57,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57385602] [2021-08-12 21:50:57,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:50:57,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:50:57,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:50:57,442 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-08-12 21:50:57,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 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) [2021-08-12 21:50:57,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:57,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-08-12 21:50:57,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:57,487 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-08-12 21:50:57,487 INFO L130 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2021-08-12 21:50:57,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 27 events. 1/27 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 54. Up to 8 conditions per place. [2021-08-12 21:50:57,488 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 2 selfloop transitions, 2 changer transitions 5/20 dead transitions. [2021-08-12 21:50:57,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 20 transitions, 103 flow [2021-08-12 21:50:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:50:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:50:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2021-08-12 21:50:57,489 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8064516129032258 [2021-08-12 21:50:57,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2021-08-12 21:50:57,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2021-08-12 21:50:57,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:57,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2021-08-12 21:50:57,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,492 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-08-12 21:50:57,492 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 20 transitions, 103 flow [2021-08-12 21:50:57,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 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) [2021-08-12 21:50:57,493 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:50:57,493 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:50:57,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 21:50:57,493 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:50:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:50:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1176386758, now seen corresponding path program 2 times [2021-08-12 21:50:57,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:50:57,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018044359] [2021-08-12 21:50:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:50:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:50:57,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:50:57,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:50:57,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,550 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-12 21:50:57,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:50:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:50:57,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:50:57,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018044359] [2021-08-12 21:50:57,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018044359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:50:57,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:50:57,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:50:57,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870400833] [2021-08-12 21:50:57,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:50:57,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:50:57,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:50:57,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:50:57,561 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-08-12 21:50:57,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 20 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 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) [2021-08-12 21:50:57,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:50:57,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-08-12 21:50:57,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:50:57,586 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-08-12 21:50:57,586 INFO L130 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2021-08-12 21:50:57,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 28 events. 1/28 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 61. Up to 7 conditions per place. [2021-08-12 21:50:57,587 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-08-12 21:50:57,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 19 transitions, 113 flow [2021-08-12 21:50:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:50:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:50:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2021-08-12 21:50:57,589 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7935483870967742 [2021-08-12 21:50:57,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2021-08-12 21:50:57,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2021-08-12 21:50:57,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:50:57,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2021-08-12 21:50:57,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2021-08-12 21:50:57,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:50:57,592 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2021-08-12 21:50:57,592 INFO L482 AbstractCegarLoop]: Abstraction has has 42 places, 19 transitions, 113 flow [2021-08-12 21:50:57,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 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) [2021-08-12 21:50:57,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 21:50:57,661 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 9534 in 64172101ns [2021-08-12 21:50:57,663 INFO L113 kiGriesValidityCheck]: 13#false [2021-08-12 21:50:57,669 INFO L113 kiGriesValidityCheck]: 2#(or (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= 3 g) (<= fooThread1of1ForFork1_n 3) (not v_np11_1) (not v_np14_1) (<= g 3) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (< 2 g) (not v_np19_1) (not v_np29_1) v_np1_1 (not v_np26_1) (<= ULTIMATE.start_z 42) v_np5_1 (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (<= 2 g) (not v_np5_1) (<= g 2) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np2_1) (not v_np17_1) v_np15_1 (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) v_np1_1 (not v_np26_1) (not v_np28_1) (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1) v_np24_1) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= 3 g) (<= fooThread1of1ForFork1_n 3) (not v_np11_1) (not v_np14_1) (<= g 3) v_np13_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (< 2 g) (not v_np19_1) (not v_np29_1) v_np1_1 (not v_np26_1) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1)) (and (not v_np25_1) (not v_np22_1) (not v_np20_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= 3 g) (<= fooThread1of1ForFork1_n 3) (not v_np11_1) (not v_np14_1) (<= g 3) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (< 2 g) (not v_np19_1) (not v_np29_1) v_np1_1 (not v_np26_1) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1) v_np23_1)) [2021-08-12 21:50:57,674 INFO L113 kiGriesValidityCheck]: 8#false [2021-08-12 21:50:57,675 INFO L113 kiGriesValidityCheck]: 12#false [2021-08-12 21:50:57,677 INFO L113 kiGriesValidityCheck]: 26#false [2021-08-12 21:50:57,678 INFO L113 kiGriesValidityCheck]: 14#(or (and (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) (< 4 g) (not v_np29_1) (not v_np26_1) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1) (<= g 5) v_np20_1) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= 3 g) (<= fooThread1of1ForFork1_n 3) (not v_np11_1) (not v_np14_1) (<= g 3) v_np13_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (< 2 g) (not v_np19_1) (not v_np29_1) v_np1_1 (not v_np26_1) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1))) [2021-08-12 21:50:57,682 INFO L113 kiGriesValidityCheck]: 21#(or (and (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) (< 4 g) (not v_np29_1) (not v_np26_1) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1) (<= g 5) v_np20_1) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 (<= g 4) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np2_1) (not v_np17_1) v_np15_1 (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) (not v_np26_1) (<= 4 g) (not v_np28_1) (not v_np0_1) (<= fooThread1of1ForFork1_thidvar0 13) v_np24_1 v_np20_1) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np2_1) (not v_np17_1) (<= 42 fooThread1of1ForFork0_res) v_np15_1 (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) (< 4 g) (not v_np26_1) v_np4_1 (not v_np28_1) (not v_np0_1) (<= fooThread1of1ForFork1_thidvar0 13) (<= g 5) v_np20_1) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) v_np18_1 (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np2_1) (not v_np17_1) (<= 42 fooThread1of1ForFork0_res) v_np15_1 (not v_np21_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) (< 4 g) (not v_np26_1) (not v_np28_1) (not v_np0_1) (<= fooThread1of1ForFork1_thidvar0 13) (<= g 5) v_np20_1) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np2_1) (not v_np17_1) (or (and (<= fooThread1of1ForFork1_thidvar0 13) (<= fooThread1of1ForFork1_n 3) (<= g 6) (< 5 g) (<= 7 fooThread1of1ForFork0_n)) (and (<= fooThread1of1ForFork1_thidvar0 13) (<= fooThread1of1ForFork1_n 3) (<= g 5) (<= 7 fooThread1of1ForFork0_n) (< 4 g))) v_np15_1 (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) v_np8_1 v_np20_1) (and (not v_np25_1) (not v_np22_1) v_np27_1 v_np28_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (or (and (<= fooThread1of1ForFork0_res 42) (<= 42 fooThread1of1ForFork0_res) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (< 41 ULTIMATE.start_z) (<= fooThread1of1ForFork1_n 3) (<= g 5) (<= 7 fooThread1of1ForFork0_n) (< 4 g)) (and (<= fooThread1of1ForFork0_res 42) (<= 42 fooThread1of1ForFork0_res) (<= ULTIMATE.start_z 42) (<= fooThread1of1ForFork1_thidvar0 13) (< 41 ULTIMATE.start_z) (<= fooThread1of1ForFork1_n 3) (<= g 6) (< 5 g) (<= 7 fooThread1of1ForFork0_n))) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np29_1) (not v_np26_1) (not v_np0_1) v_np23_1 v_np20_1) (and (not v_np25_1) (not v_np22_1) (not v_np23_1) v_np27_1 v_np28_1 (< 41 ULTIMATE.start_z) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (<= fooThread1of1ForFork1_n 3) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (<= fooThread1of1ForFork0_res 42) (not v_np15_1) (not v_np2_1) (<= 42 fooThread1of1ForFork0_res) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 7 fooThread1of1ForFork0_n) (not v_np19_1) (< 4 g) (not v_np29_1) (not v_np26_1) (<= ULTIMATE.start_z 42) v_np5_1 (<= fooThread1of1ForFork1_thidvar0 13) (not v_np0_1) (<= g 5) v_np20_1)) [2021-08-12 21:50:57,762 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 105788009ns [2021-08-12 21:50:57,763 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Invalid Owicki-Gries annotation at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-12 21:50:57,766 INFO L168 Benchmark]: Toolchain (without parser) took 1466.12 ms. Allocated memory is still 182.5 MB. Free memory was 163.6 MB in the beginning and 157.2 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-08-12 21:50:57,767 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 182.5 MB. Free memory is still 164.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:50:57,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.74 ms. Allocated memory is still 182.5 MB. Free memory was 163.5 MB in the beginning and 162.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:50:57,767 INFO L168 Benchmark]: Boogie Preprocessor took 12.21 ms. Allocated memory is still 182.5 MB. Free memory was 162.1 MB in the beginning and 161.2 MB in the end (delta: 926.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-12 21:50:57,768 INFO L168 Benchmark]: RCFGBuilder took 190.05 ms. Allocated memory is still 182.5 MB. Free memory was 161.2 MB in the beginning and 151.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-12 21:50:57,768 INFO L168 Benchmark]: TraceAbstraction took 1227.95 ms. Allocated memory is still 182.5 MB. Free memory was 150.9 MB in the beginning and 157.2 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:50:57,769 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 0.16 ms. Allocated memory is still 182.5 MB. Free memory is still 164.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.74 ms. Allocated memory is still 182.5 MB. Free memory was 163.5 MB in the beginning and 162.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.21 ms. Allocated memory is still 182.5 MB. Free memory was 162.1 MB in the beginning and 161.2 MB in the end (delta: 926.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 190.05 ms. Allocated memory is still 182.5 MB. Free memory was 161.2 MB in the beginning and 151.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1227.95 ms. Allocated memory is still 182.5 MB. Free memory was 150.9 MB in the beginning and 157.2 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Invalid Owicki-Gries annotation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Invalid Owicki-Gries annotation: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...