/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:38:07,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:38:07,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:38:07,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:38:07,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:38:07,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:38:07,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:38:07,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:38:07,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:38:07,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:38:07,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:38:07,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:38:07,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:38:07,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:38:07,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:38:07,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:38:07,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:38:08,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:38:08,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:38:08,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:38:08,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:38:08,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:38:08,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:38:08,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:38:08,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 14:38:08,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:38:08,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:38:08,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:38:08,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:38:08,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:38:08,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:38:08,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:38:08,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:38:08,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:38:08,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:38:08,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:38:08,022 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 [2021-06-10 14:38:08,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:38:08,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:38:08,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:38:08,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:38:08,051 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:38:08,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:38:08,051 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:38:08,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:38:08,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:38:08,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:38:08,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:38:08,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:38:08,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:38:08,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:38:08,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:38:08,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:38:08,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:38:08,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:38:08,329 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:38:08,330 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:38:08,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl [2021-06-10 14:38:08,331 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl' [2021-06-10 14:38:08,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:38:08,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:38:08,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:38:08,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:38:08,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:38:08,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:38:08,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:38:08,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:38:08,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:38:08,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/1) ... [2021-06-10 14:38:08,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:38:08,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:38:08,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:38:08,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:38:08,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (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 [2021-06-10 14:38:08,459 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-10 14:38:08,459 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-10 14:38:08,459 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-10 14:38:08,459 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:38:08,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:38:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:38:08,460 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:38:08,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:38:08,582 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:38:08,584 INFO L202 PluginConnector]: Adding new model ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:38:08 BoogieIcfgContainer [2021-06-10 14:38:08,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:38:08,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:38:08,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:38:08,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:38:08,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:08" (1/2) ... [2021-06-10 14:38:08,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ffcf14 and model type ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:38:08, skipping insertion in model container [2021-06-10 14:38:08,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:38:08" (2/2) ... [2021-06-10 14:38:08,592 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkJoinExplained.bpl [2021-06-10 14:38:08,596 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:38:08,600 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-06-10 14:38:08,601 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:38:08,624 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,625 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,625 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,626 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,627 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,627 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,628 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,629 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,629 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,630 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,631 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,631 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,632 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,633 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,633 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,633 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,635 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,650 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:08,661 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-10 14:38:08,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-10 14:38:08,702 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:38:08,702 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:38:08,702 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:38:08,702 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:38:08,702 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:38:08,702 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:38:08,702 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:38:08,702 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:38:08,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 84 flow [2021-06-10 14:38:08,741 INFO L129 PetriNetUnfolder]: 3/33 cut-off events. [2021-06-10 14:38:08,742 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 14:38:08,744 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. [2021-06-10 14:38:08,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 84 flow [2021-06-10 14:38:08,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 72 flow [2021-06-10 14:38:08,760 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-06-10 14:38:08,760 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 14:38:08,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:08,761 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:08,761 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:08,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:08,766 INFO L82 PathProgramCache]: Analyzing trace with hash -211848501, now seen corresponding path program 1 times [2021-06-10 14:38:08,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:08,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181984772] [2021-06-10 14:38:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:08,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:08,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:08,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:08,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:08,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:08,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:08,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181984772] [2021-06-10 14:38:08,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:08,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:08,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616797988] [2021-06-10 14:38:08,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:08,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:08,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:08,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:08,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 31 [2021-06-10 14:38:08,918 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) [2021-06-10 14:38:08,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:08,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 31 [2021-06-10 14:38:08,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:08,929 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-06-10 14:38:08,929 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-10 14:38:08,929 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. [2021-06-10 14:38:08,930 INFO L132 encePairwiseOnDemand]: 29/31 looper letters, 1 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-06-10 14:38:08,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 70 flow [2021-06-10 14:38:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2021-06-10 14:38:08,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2021-06-10 14:38:08,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2021-06-10 14:38:08,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2021-06-10 14:38:08,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:08,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2021-06-10 14:38:08,942 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) [2021-06-10 14:38:08,944 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) [2021-06-10 14:38:08,944 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) [2021-06-10 14:38:08,945 INFO L185 Difference]: Start difference. First operand has 30 places, 27 transitions, 72 flow. Second operand 3 states and 84 transitions. [2021-06-10 14:38:08,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 70 flow [2021-06-10 14:38:08,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 58 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 14:38:08,964 INFO L241 Difference]: Finished difference. Result has 26 places, 24 transitions, 56 flow [2021-06-10 14:38:08,965 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2021-06-10 14:38:08,966 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2021-06-10 14:38:08,966 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 56 flow [2021-06-10 14:38:08,966 INFO L481 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) [2021-06-10 14:38:08,966 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:08,966 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:08,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:38:08,967 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash 686358403, now seen corresponding path program 1 times [2021-06-10 14:38:08,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:08,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922632542] [2021-06-10 14:38:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:08,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:08,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:08,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:08,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:08,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:08,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:08,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922632542] [2021-06-10 14:38:08,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:08,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:08,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50264450] [2021-06-10 14:38:08,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:08,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:08,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:08,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:08,984 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 31 [2021-06-10 14:38:08,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 56 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) [2021-06-10 14:38:08,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:08,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 31 [2021-06-10 14:38:08,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:08,991 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2021-06-10 14:38:08,991 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:38:08,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 25 events. 1/25 cut-off events. For 0/0 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 23. Up to 2 conditions per place. [2021-06-10 14:38:08,991 INFO L132 encePairwiseOnDemand]: 29/31 looper letters, 1 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2021-06-10 14:38:08,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 54 flow [2021-06-10 14:38:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2021-06-10 14:38:08,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2021-06-10 14:38:08,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2021-06-10 14:38:08,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2021-06-10 14:38:08,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:08,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2021-06-10 14:38:08,994 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) [2021-06-10 14:38:08,994 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) [2021-06-10 14:38:08,995 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) [2021-06-10 14:38:08,995 INFO L185 Difference]: Start difference. First operand has 26 places, 24 transitions, 56 flow. Second operand 3 states and 84 transitions. [2021-06-10 14:38:08,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 54 flow [2021-06-10 14:38:08,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:08,996 INFO L241 Difference]: Finished difference. Result has 25 places, 21 transitions, 51 flow [2021-06-10 14:38:08,996 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2021-06-10 14:38:08,996 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2021-06-10 14:38:08,997 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 51 flow [2021-06-10 14:38:08,997 INFO L481 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) [2021-06-10 14:38:08,997 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:08,997 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:08,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:38:08,997 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash -230697950, now seen corresponding path program 1 times [2021-06-10 14:38:08,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:08,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314624405] [2021-06-10 14:38:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:09,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:09,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 14:38:09,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:09,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314624405] [2021-06-10 14:38:09,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:09,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:09,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936177696] [2021-06-10 14:38:09,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 14:38:09,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:09,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 14:38:09,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 14:38:09,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-06-10 14:38:09,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 51 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) [2021-06-10 14:38:09,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:09,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-06-10 14:38:09,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:09,071 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2021-06-10 14:38:09,071 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 14:38:09,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 32 events. 4/32 cut-off events. For 4/4 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 43. Up to 5 conditions per place. [2021-06-10 14:38:09,071 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 6 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-06-10 14:38:09,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 84 flow [2021-06-10 14:38:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:38:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:38:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2021-06-10 14:38:09,077 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8193548387096774 [2021-06-10 14:38:09,077 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 127 transitions. [2021-06-10 14:38:09,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 127 transitions. [2021-06-10 14:38:09,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:09,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 127 transitions. [2021-06-10 14:38:09,078 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) [2021-06-10 14:38:09,079 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) [2021-06-10 14:38:09,079 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) [2021-06-10 14:38:09,079 INFO L185 Difference]: Start difference. First operand has 25 places, 21 transitions, 51 flow. Second operand 5 states and 127 transitions. [2021-06-10 14:38:09,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 84 flow [2021-06-10 14:38:09,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:09,081 INFO L241 Difference]: Finished difference. Result has 29 places, 24 transitions, 73 flow [2021-06-10 14:38:09,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2021-06-10 14:38:09,081 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2021-06-10 14:38:09,081 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 73 flow [2021-06-10 14:38:09,081 INFO L481 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) [2021-06-10 14:38:09,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:09,081 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:09,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:38:09,082 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash -182266038, now seen corresponding path program 1 times [2021-06-10 14:38:09,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:09,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81251055] [2021-06-10 14:38:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:09,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:09,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:09,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:09,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81251055] [2021-06-10 14:38:09,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:09,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:09,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246040470] [2021-06-10 14:38:09,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:09,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:09,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:09,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:09,105 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 31 [2021-06-10 14:38:09,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 73 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) [2021-06-10 14:38:09,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:09,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 31 [2021-06-10 14:38:09,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:09,110 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-10 14:38:09,111 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-10 14:38:09,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 16 events. 0/16 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 2/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 14:38:09,111 INFO L132 encePairwiseOnDemand]: 28/31 looper letters, 0 selfloop transitions, 1 changer transitions 1/16 dead transitions. [2021-06-10 14:38:09,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 46 flow [2021-06-10 14:38:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2021-06-10 14:38:09,112 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2021-06-10 14:38:09,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2021-06-10 14:38:09,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2021-06-10 14:38:09,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:09,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2021-06-10 14:38:09,113 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) [2021-06-10 14:38:09,114 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) [2021-06-10 14:38:09,114 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) [2021-06-10 14:38:09,114 INFO L185 Difference]: Start difference. First operand has 29 places, 24 transitions, 73 flow. Second operand 3 states and 84 transitions. [2021-06-10 14:38:09,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 46 flow [2021-06-10 14:38:09,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 16 transitions, 39 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-06-10 14:38:09,115 INFO L241 Difference]: Finished difference. Result has 23 places, 15 transitions, 37 flow [2021-06-10 14:38:09,116 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2021-06-10 14:38:09,116 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -7 predicate places. [2021-06-10 14:38:09,116 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 37 flow [2021-06-10 14:38:09,116 INFO L481 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) [2021-06-10 14:38:09,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:09,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:09,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:38:09,116 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1438298200, now seen corresponding path program 1 times [2021-06-10 14:38:09,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:09,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776447100] [2021-06-10 14:38:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:09,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:09,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 14:38:09,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:09,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776447100] [2021-06-10 14:38:09,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:09,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:09,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246997722] [2021-06-10 14:38:09,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 14:38:09,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:09,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 14:38:09,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 14:38:09,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-06-10 14:38:09,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 37 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) [2021-06-10 14:38:09,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:09,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-06-10 14:38:09,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:09,178 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-06-10 14:38:09,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:38:09,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 19 events. 1/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 24. Up to 5 conditions per place. [2021-06-10 14:38:09,179 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 2 selfloop transitions, 4 changer transitions 0/17 dead transitions. [2021-06-10 14:38:09,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 53 flow [2021-06-10 14:38:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 14:38:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 14:38:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2021-06-10 14:38:09,180 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7983870967741935 [2021-06-10 14:38:09,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 99 transitions. [2021-06-10 14:38:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 99 transitions. [2021-06-10 14:38:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 99 transitions. [2021-06-10 14:38:09,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-06-10 14:38:09,182 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) [2021-06-10 14:38:09,182 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) [2021-06-10 14:38:09,182 INFO L185 Difference]: Start difference. First operand has 23 places, 15 transitions, 37 flow. Second operand 4 states and 99 transitions. [2021-06-10 14:38:09,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 53 flow [2021-06-10 14:38:09,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 17 transitions, 52 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:09,183 INFO L241 Difference]: Finished difference. Result has 26 places, 17 transitions, 57 flow [2021-06-10 14:38:09,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2021-06-10 14:38:09,184 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2021-06-10 14:38:09,184 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 57 flow [2021-06-10 14:38:09,184 INFO L481 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) [2021-06-10 14:38:09,184 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:09,184 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:09,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:38:09,184 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:09,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1375467406, now seen corresponding path program 1 times [2021-06-10 14:38:09,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:09,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127051007] [2021-06-10 14:38:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:09,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:09,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 14:38:09,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:09,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127051007] [2021-06-10 14:38:09,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:09,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:38:09,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581464111] [2021-06-10 14:38:09,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:38:09,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:09,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:38:09,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:38:09,251 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-06-10 14:38:09,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 57 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) [2021-06-10 14:38:09,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:09,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-06-10 14:38:09,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:09,272 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-06-10 14:38:09,272 INFO L130 PetriNetUnfolder]: For 10/13 co-relation queries the response was YES. [2021-06-10 14:38:09,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 23 events. 0/23 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-10 14:38:09,272 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 2 selfloop transitions, 2 changer transitions 2/17 dead transitions. [2021-06-10 14:38:09,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 69 flow [2021-06-10 14:38:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:38:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:38:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2021-06-10 14:38:09,274 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7870967741935484 [2021-06-10 14:38:09,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 122 transitions. [2021-06-10 14:38:09,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 122 transitions. [2021-06-10 14:38:09,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:09,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 122 transitions. [2021-06-10 14:38:09,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:09,275 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) [2021-06-10 14:38:09,276 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) [2021-06-10 14:38:09,276 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 57 flow. Second operand 5 states and 122 transitions. [2021-06-10 14:38:09,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 69 flow [2021-06-10 14:38:09,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:09,277 INFO L241 Difference]: Finished difference. Result has 30 places, 15 transitions, 50 flow [2021-06-10 14:38:09,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=50, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2021-06-10 14:38:09,277 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-06-10 14:38:09,277 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 50 flow [2021-06-10 14:38:09,277 INFO L481 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) [2021-06-10 14:38:09,277 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:09,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:09,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:38:09,278 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:38:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:09,278 INFO L82 PathProgramCache]: Analyzing trace with hash 806420142, now seen corresponding path program 2 times [2021-06-10 14:38:09,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:09,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284381989] [2021-06-10 14:38:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:09,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:09,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:09,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 14:38:09,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:09,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284381989] [2021-06-10 14:38:09,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:09,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:38:09,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861719022] [2021-06-10 14:38:09,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:38:09,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:38:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:38:09,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 31 [2021-06-10 14:38:09,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 15 transitions, 50 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) [2021-06-10 14:38:09,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:09,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 31 [2021-06-10 14:38:09,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:09,348 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-10 14:38:09,348 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-10 14:38:09,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 14 events. 0/14 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-10 14:38:09,349 INFO L132 encePairwiseOnDemand]: 27/31 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-06-10 14:38:09,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 50 flow [2021-06-10 14:38:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:38:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:38:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2021-06-10 14:38:09,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7677419354838709 [2021-06-10 14:38:09,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2021-06-10 14:38:09,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2021-06-10 14:38:09,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:09,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2021-06-10 14:38:09,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2021-06-10 14:38:09,352 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) [2021-06-10 14:38:09,352 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) [2021-06-10 14:38:09,352 INFO L185 Difference]: Start difference. First operand has 30 places, 15 transitions, 50 flow. Second operand 5 states and 119 transitions. [2021-06-10 14:38:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 50 flow [2021-06-10 14:38:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 14 transitions, 42 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 14:38:09,353 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-06-10 14:38:09,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-06-10 14:38:09,353 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2021-06-10 14:38:09,353 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2021-06-10 14:38:09,353 INFO L481 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) [2021-06-10 14:38:09,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:38:09,356 INFO L202 PluginConnector]: Adding new model ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 02:38:09 BasicIcfg [2021-06-10 14:38:09,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 14:38:09,357 INFO L168 Benchmark]: Toolchain (without parser) took 968.55 ms. Allocated memory is still 346.0 MB. Free memory was 325.7 MB in the beginning and 264.3 MB in the end (delta: 61.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:09,358 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:38:09,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.50 ms. Allocated memory is still 346.0 MB. Free memory was 325.6 MB in the beginning and 324.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:09,358 INFO L168 Benchmark]: Boogie Preprocessor took 9.41 ms. Allocated memory is still 346.0 MB. Free memory was 324.2 MB in the beginning and 323.3 MB in the end (delta: 851.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:09,359 INFO L168 Benchmark]: RCFGBuilder took 166.60 ms. Allocated memory is still 346.0 MB. Free memory was 323.2 MB in the beginning and 313.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:09,359 INFO L168 Benchmark]: TraceAbstraction took 770.30 ms. Allocated memory is still 346.0 MB. Free memory was 313.1 MB in the beginning and 264.3 MB in the end (delta: 48.9 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:09,361 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 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.50 ms. Allocated memory is still 346.0 MB. Free memory was 325.6 MB in the beginning and 324.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.41 ms. Allocated memory is still 346.0 MB. Free memory was 324.2 MB in the beginning and 323.3 MB in the end (delta: 851.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 166.60 ms. Allocated memory is still 346.0 MB. Free memory was 323.2 MB in the beginning and 313.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 770.30 ms. Allocated memory is still 346.0 MB. Free memory was 313.1 MB in the beginning and 264.3 MB in the end (delta: 48.9 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 55]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 61]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 654.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 183.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 9 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=3, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.7ms SsaConstructionTime, 38.2ms SatisfiabilityAnalysisTime, 269.5ms InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...