./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:49:43,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:49:43,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:49:43,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:49:43,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:49:43,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:49:43,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:49:43,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:49:43,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:49:43,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:49:43,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:49:43,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:49:43,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:49:43,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:49:43,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:49:43,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:49:43,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:49:43,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:49:43,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:49:43,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:49:43,646 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:49:43,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:49:43,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:49:43,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:49:43,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:49:43,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:49:43,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:49:43,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:49:43,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:49:43,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:49:43,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:49:43,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:49:43,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:49:43,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:49:43,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:49:43,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:49:43,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:49:43,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:49:43,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:49:43,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:49:43,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:49:43,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:49:43,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:49:43,693 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:49:43,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:49:43,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:49:43,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:49:43,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:49:43,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:49:43,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:49:43,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:49:43,696 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:49:43,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:49:43,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:49:43,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:49:43,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:49:43,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:49:43,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:49:43,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:49:43,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:49:43,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:49:43,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:49:43,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:49:43,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:49:43,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:49:43,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:49:43,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:49:43,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:49:43,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:49:43,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:49:43,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:49:43,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:49:43,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:49:43,700 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:49:43,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:49:43,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:49:43,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2022-07-21 08:49:43,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:49:43,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:49:43,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:49:43,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:49:43,999 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:49:44,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-07-21 08:49:44,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fa498a6/8e426b84cc5c4bfd87b42f77b07d7975/FLAG2d963bd9d [2022-07-21 08:49:44,466 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:49:44,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-07-21 08:49:44,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fa498a6/8e426b84cc5c4bfd87b42f77b07d7975/FLAG2d963bd9d [2022-07-21 08:49:44,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fa498a6/8e426b84cc5c4bfd87b42f77b07d7975 [2022-07-21 08:49:44,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:49:44,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:49:44,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:49:44,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:49:44,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:49:44,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45855e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44, skipping insertion in model container [2022-07-21 08:49:44,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:49:44,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:49:44,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-07-21 08:49:44,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:49:44,847 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:49:44,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-07-21 08:49:44,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:49:44,925 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:49:44,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44 WrapperNode [2022-07-21 08:49:44,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:49:44,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:49:44,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:49:44,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:49:44,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,979 INFO L137 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2022-07-21 08:49:44,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:49:44,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:49:44,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:49:44,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:49:44,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:44,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:45,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:49:45,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:49:45,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:49:45,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:49:45,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (1/1) ... [2022-07-21 08:49:45,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:49:45,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:49:45,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:49:45,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:49:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:49:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-21 08:49:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-21 08:49:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:49:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:49:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:49:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:49:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-21 08:49:45,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-21 08:49:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:49:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:49:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:49:45,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:49:45,136 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:49:45,308 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:49:45,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:49:45,557 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:49:45,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:49:45,566 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:49:45,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:49:45 BoogieIcfgContainer [2022-07-21 08:49:45,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:49:45,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:49:45,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:49:45,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:49:45,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:49:44" (1/3) ... [2022-07-21 08:49:45,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3b38af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:49:45, skipping insertion in model container [2022-07-21 08:49:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:44" (2/3) ... [2022-07-21 08:49:45,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3b38af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:49:45, skipping insertion in model container [2022-07-21 08:49:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:49:45" (3/3) ... [2022-07-21 08:49:45,573 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2022-07-21 08:49:45,577 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:49:45,599 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:49:45,599 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-21 08:49:45,599 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:49:45,655 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:49:45,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 334 flow [2022-07-21 08:49:45,721 INFO L129 PetriNetUnfolder]: 4/157 cut-off events. [2022-07-21 08:49:45,721 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:49:45,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 4/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2022-07-21 08:49:45,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 334 flow [2022-07-21 08:49:45,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 137 transitions, 280 flow [2022-07-21 08:49:45,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:49:45,738 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58e7f24, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13996061 [2022-07-21 08:49:45,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:49:45,766 INFO L129 PetriNetUnfolder]: 0/89 cut-off events. [2022-07-21 08:49:45,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:49:45,767 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:45,767 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:45,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash 811554038, now seen corresponding path program 1 times [2022-07-21 08:49:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862465678] [2022-07-21 08:49:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:46,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862465678] [2022-07-21 08:49:46,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862465678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:46,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:46,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:49:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097962238] [2022-07-21 08:49:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:49:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:49:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:49:46,163 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2022-07-21 08:49:46,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 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) [2022-07-21 08:49:46,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:46,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2022-07-21 08:49:46,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:46,391 INFO L129 PetriNetUnfolder]: 93/563 cut-off events. [2022-07-21 08:49:46,391 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 08:49:46,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 563 events. 93/563 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2796 event pairs, 24 based on Foata normal form. 16/563 useless extension candidates. Maximal degree in co-relation 756. Up to 78 conditions per place. [2022-07-21 08:49:46,397 INFO L132 encePairwiseOnDemand]: 138/159 looper letters, 37 selfloop transitions, 23 changer transitions 5/170 dead transitions. [2022-07-21 08:49:46,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 170 transitions, 479 flow [2022-07-21 08:49:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:49:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:49:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1173 transitions. [2022-07-21 08:49:46,410 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8197064989517819 [2022-07-21 08:49:46,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1173 transitions. [2022-07-21 08:49:46,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1173 transitions. [2022-07-21 08:49:46,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:46,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1173 transitions. [2022-07-21 08:49:46,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.33333333333334) internal successors, (1173), 9 states have internal predecessors, (1173), 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) [2022-07-21 08:49:46,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2022-07-21 08:49:46,434 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2022-07-21 08:49:46,436 INFO L186 Difference]: Start difference. First operand has 141 places, 137 transitions, 280 flow. Second operand 9 states and 1173 transitions. [2022-07-21 08:49:46,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 170 transitions, 479 flow [2022-07-21 08:49:46,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:49:46,444 INFO L242 Difference]: Finished difference. Result has 151 places, 148 transitions, 415 flow [2022-07-21 08:49:46,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=415, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2022-07-21 08:49:46,450 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 10 predicate places. [2022-07-21 08:49:46,450 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 415 flow [2022-07-21 08:49:46,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 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) [2022-07-21 08:49:46,451 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:46,452 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:46,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:49:46,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:46,454 INFO L85 PathProgramCache]: Analyzing trace with hash 235319527, now seen corresponding path program 1 times [2022-07-21 08:49:46,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:46,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216457739] [2022-07-21 08:49:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:46,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:46,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:46,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216457739] [2022-07-21 08:49:46,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216457739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:46,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:46,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:49:46,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113592203] [2022-07-21 08:49:46,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:46,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:49:46,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:49:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:49:46,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 159 [2022-07-21 08:49:46,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2022-07-21 08:49:46,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:46,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 159 [2022-07-21 08:49:46,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:46,944 INFO L129 PetriNetUnfolder]: 370/1820 cut-off events. [2022-07-21 08:49:46,945 INFO L130 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-07-21 08:49:46,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1820 events. 370/1820 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13644 event pairs, 95 based on Foata normal form. 91/1889 useless extension candidates. Maximal degree in co-relation 3058. Up to 551 conditions per place. [2022-07-21 08:49:46,955 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 50 selfloop transitions, 7 changer transitions 0/169 dead transitions. [2022-07-21 08:49:46,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 169 transitions, 573 flow [2022-07-21 08:49:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:49:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:49:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2022-07-21 08:49:46,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723270440251573 [2022-07-21 08:49:46,957 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2022-07-21 08:49:46,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2022-07-21 08:49:46,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:46,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2022-07-21 08:49:46,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 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) [2022-07-21 08:49:46,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2022-07-21 08:49:46,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2022-07-21 08:49:46,961 INFO L186 Difference]: Start difference. First operand has 151 places, 148 transitions, 415 flow. Second operand 5 states and 614 transitions. [2022-07-21 08:49:46,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 169 transitions, 573 flow [2022-07-21 08:49:46,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 169 transitions, 556 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-21 08:49:46,969 INFO L242 Difference]: Finished difference. Result has 154 places, 151 transitions, 429 flow [2022-07-21 08:49:46,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=154, PETRI_TRANSITIONS=151} [2022-07-21 08:49:46,970 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 13 predicate places. [2022-07-21 08:49:46,970 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 151 transitions, 429 flow [2022-07-21 08:49:46,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2022-07-21 08:49:46,971 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:46,971 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:46,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:49:46,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1657823486, now seen corresponding path program 1 times [2022-07-21 08:49:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:46,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971389547] [2022-07-21 08:49:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:46,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:47,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971389547] [2022-07-21 08:49:47,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971389547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:47,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:47,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:49:47,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819881715] [2022-07-21 08:49:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:49:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:49:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:49:47,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 159 [2022-07-21 08:49:47,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 151 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 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) [2022-07-21 08:49:47,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:47,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 159 [2022-07-21 08:49:47,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:47,505 INFO L129 PetriNetUnfolder]: 215/1123 cut-off events. [2022-07-21 08:49:47,505 INFO L130 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-07-21 08:49:47,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 1123 events. 215/1123 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7260 event pairs, 9 based on Foata normal form. 16/1128 useless extension candidates. Maximal degree in co-relation 2019. Up to 69 conditions per place. [2022-07-21 08:49:47,511 INFO L132 encePairwiseOnDemand]: 136/159 looper letters, 95 selfloop transitions, 103 changer transitions 7/311 dead transitions. [2022-07-21 08:49:47,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 311 transitions, 1467 flow [2022-07-21 08:49:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:49:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:49:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3310 transitions. [2022-07-21 08:49:47,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8006773101112724 [2022-07-21 08:49:47,517 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3310 transitions. [2022-07-21 08:49:47,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3310 transitions. [2022-07-21 08:49:47,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:47,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3310 transitions. [2022-07-21 08:49:47,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 127.3076923076923) internal successors, (3310), 26 states have internal predecessors, (3310), 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) [2022-07-21 08:49:47,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 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) [2022-07-21 08:49:47,531 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 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) [2022-07-21 08:49:47,531 INFO L186 Difference]: Start difference. First operand has 154 places, 151 transitions, 429 flow. Second operand 26 states and 3310 transitions. [2022-07-21 08:49:47,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 311 transitions, 1467 flow [2022-07-21 08:49:47,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 311 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:49:47,537 INFO L242 Difference]: Finished difference. Result has 185 places, 232 transitions, 1130 flow [2022-07-21 08:49:47,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1130, PETRI_PLACES=185, PETRI_TRANSITIONS=232} [2022-07-21 08:49:47,539 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2022-07-21 08:49:47,539 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 232 transitions, 1130 flow [2022-07-21 08:49:47,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 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) [2022-07-21 08:49:47,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:47,540 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:47,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:49:47,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:47,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1808695242, now seen corresponding path program 1 times [2022-07-21 08:49:47,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:47,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222610772] [2022-07-21 08:49:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:47,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:47,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:47,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222610772] [2022-07-21 08:49:47,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222610772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:47,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:47,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:49:47,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404495902] [2022-07-21 08:49:47,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:47,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:49:47,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:47,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:49:47,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:49:47,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2022-07-21 08:49:47,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 232 transitions, 1130 flow. Second operand has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2022-07-21 08:49:47,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:47,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2022-07-21 08:49:47,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:47,830 INFO L129 PetriNetUnfolder]: 268/1584 cut-off events. [2022-07-21 08:49:47,830 INFO L130 PetriNetUnfolder]: For 1420/1481 co-relation queries the response was YES. [2022-07-21 08:49:47,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 1584 events. 268/1584 cut-off events. For 1420/1481 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12214 event pairs, 49 based on Foata normal form. 21/1589 useless extension candidates. Maximal degree in co-relation 3406. Up to 203 conditions per place. [2022-07-21 08:49:47,840 INFO L132 encePairwiseOnDemand]: 147/159 looper letters, 81 selfloop transitions, 76 changer transitions 5/288 dead transitions. [2022-07-21 08:49:47,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 288 transitions, 1811 flow [2022-07-21 08:49:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:49:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:49:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1158 transitions. [2022-07-21 08:49:47,843 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8092243186582809 [2022-07-21 08:49:47,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1158 transitions. [2022-07-21 08:49:47,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1158 transitions. [2022-07-21 08:49:47,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:47,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1158 transitions. [2022-07-21 08:49:47,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 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) [2022-07-21 08:49:47,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2022-07-21 08:49:47,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2022-07-21 08:49:47,848 INFO L186 Difference]: Start difference. First operand has 185 places, 232 transitions, 1130 flow. Second operand 9 states and 1158 transitions. [2022-07-21 08:49:47,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 288 transitions, 1811 flow [2022-07-21 08:49:47,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 288 transitions, 1756 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-21 08:49:47,861 INFO L242 Difference]: Finished difference. Result has 192 places, 263 transitions, 1547 flow [2022-07-21 08:49:47,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=192, PETRI_TRANSITIONS=263} [2022-07-21 08:49:47,862 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 51 predicate places. [2022-07-21 08:49:47,862 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 263 transitions, 1547 flow [2022-07-21 08:49:47,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2022-07-21 08:49:47,862 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:47,862 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:49:47,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash 569035373, now seen corresponding path program 1 times [2022-07-21 08:49:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:47,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77940355] [2022-07-21 08:49:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:47,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:47,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77940355] [2022-07-21 08:49:47,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77940355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:47,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:47,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:49:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696307448] [2022-07-21 08:49:47,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:47,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:49:47,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:47,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:49:47,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:49:47,939 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 159 [2022-07-21 08:49:47,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 263 transitions, 1547 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2022-07-21 08:49:47,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:47,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 159 [2022-07-21 08:49:47,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:48,208 INFO L129 PetriNetUnfolder]: 239/1751 cut-off events. [2022-07-21 08:49:48,208 INFO L130 PetriNetUnfolder]: For 1004/1006 co-relation queries the response was YES. [2022-07-21 08:49:48,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 1751 events. 239/1751 cut-off events. For 1004/1006 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 13124 event pairs, 96 based on Foata normal form. 130/1873 useless extension candidates. Maximal degree in co-relation 3569. Up to 357 conditions per place. [2022-07-21 08:49:48,216 INFO L132 encePairwiseOnDemand]: 141/159 looper letters, 33 selfloop transitions, 18 changer transitions 2/197 dead transitions. [2022-07-21 08:49:48,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 197 transitions, 979 flow [2022-07-21 08:49:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:49:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:49:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 611 transitions. [2022-07-21 08:49:48,240 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7685534591194969 [2022-07-21 08:49:48,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 611 transitions. [2022-07-21 08:49:48,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 611 transitions. [2022-07-21 08:49:48,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:48,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 611 transitions. [2022-07-21 08:49:48,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 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) [2022-07-21 08:49:48,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2022-07-21 08:49:48,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2022-07-21 08:49:48,243 INFO L186 Difference]: Start difference. First operand has 192 places, 263 transitions, 1547 flow. Second operand 5 states and 611 transitions. [2022-07-21 08:49:48,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 197 transitions, 979 flow [2022-07-21 08:49:48,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 197 transitions, 945 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-21 08:49:48,256 INFO L242 Difference]: Finished difference. Result has 185 places, 188 transitions, 867 flow [2022-07-21 08:49:48,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=867, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2022-07-21 08:49:48,258 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2022-07-21 08:49:48,258 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 867 flow [2022-07-21 08:49:48,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2022-07-21 08:49:48,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:48,259 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:48,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:49:48,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 530066106, now seen corresponding path program 1 times [2022-07-21 08:49:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:48,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102370297] [2022-07-21 08:49:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:48,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:48,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:48,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102370297] [2022-07-21 08:49:48,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102370297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:48,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:48,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:49:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315372851] [2022-07-21 08:49:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:48,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:49:48,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:49:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:49:48,419 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2022-07-21 08:49:48,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 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) [2022-07-21 08:49:48,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:48,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2022-07-21 08:49:48,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:48,590 INFO L129 PetriNetUnfolder]: 117/900 cut-off events. [2022-07-21 08:49:48,590 INFO L130 PetriNetUnfolder]: For 873/891 co-relation queries the response was YES. [2022-07-21 08:49:48,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 900 events. 117/900 cut-off events. For 873/891 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5427 event pairs, 31 based on Foata normal form. 36/917 useless extension candidates. Maximal degree in co-relation 2147. Up to 307 conditions per place. [2022-07-21 08:49:48,593 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 46 selfloop transitions, 8 changer transitions 12/159 dead transitions. [2022-07-21 08:49:48,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 159 transitions, 802 flow [2022-07-21 08:49:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:49:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:49:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 681 transitions. [2022-07-21 08:49:48,595 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2022-07-21 08:49:48,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 681 transitions. [2022-07-21 08:49:48,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 681 transitions. [2022-07-21 08:49:48,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:48,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 681 transitions. [2022-07-21 08:49:48,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2022-07-21 08:49:48,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2022-07-21 08:49:48,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2022-07-21 08:49:48,598 INFO L186 Difference]: Start difference. First operand has 185 places, 188 transitions, 867 flow. Second operand 6 states and 681 transitions. [2022-07-21 08:49:48,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 159 transitions, 802 flow [2022-07-21 08:49:48,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 695 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-07-21 08:49:48,602 INFO L242 Difference]: Finished difference. Result has 156 places, 139 transitions, 499 flow [2022-07-21 08:49:48,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-07-21 08:49:48,603 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 15 predicate places. [2022-07-21 08:49:48,603 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 499 flow [2022-07-21 08:49:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 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) [2022-07-21 08:49:48,604 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:48,604 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:48,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:49:48,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1228426076, now seen corresponding path program 1 times [2022-07-21 08:49:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:48,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132045009] [2022-07-21 08:49:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:48,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:48,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132045009] [2022-07-21 08:49:48,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132045009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:48,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:48,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:49:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784107379] [2022-07-21 08:49:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:49:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:49:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:49:48,705 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2022-07-21 08:49:48,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 108.75) internal successors, (870), 8 states have internal predecessors, (870), 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) [2022-07-21 08:49:48,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:48,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2022-07-21 08:49:48,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:48,859 INFO L129 PetriNetUnfolder]: 61/587 cut-off events. [2022-07-21 08:49:48,860 INFO L130 PetriNetUnfolder]: For 372/384 co-relation queries the response was YES. [2022-07-21 08:49:48,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 587 events. 61/587 cut-off events. For 372/384 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2957 event pairs, 20 based on Foata normal form. 22/603 useless extension candidates. Maximal degree in co-relation 1281. Up to 135 conditions per place. [2022-07-21 08:49:48,862 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 48 selfloop transitions, 7 changer transitions 6/148 dead transitions. [2022-07-21 08:49:48,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 148 transitions, 662 flow [2022-07-21 08:49:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:49:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:49:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2022-07-21 08:49:48,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7127882599580713 [2022-07-21 08:49:48,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2022-07-21 08:49:48,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2022-07-21 08:49:48,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:48,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2022-07-21 08:49:48,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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) [2022-07-21 08:49:48,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2022-07-21 08:49:48,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2022-07-21 08:49:48,866 INFO L186 Difference]: Start difference. First operand has 156 places, 139 transitions, 499 flow. Second operand 6 states and 680 transitions. [2022-07-21 08:49:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 148 transitions, 662 flow [2022-07-21 08:49:48,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 625 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-07-21 08:49:48,869 INFO L242 Difference]: Finished difference. Result has 146 places, 132 transitions, 439 flow [2022-07-21 08:49:48,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=146, PETRI_TRANSITIONS=132} [2022-07-21 08:49:48,870 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 5 predicate places. [2022-07-21 08:49:48,870 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 132 transitions, 439 flow [2022-07-21 08:49:48,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.75) internal successors, (870), 8 states have internal predecessors, (870), 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) [2022-07-21 08:49:48,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:48,870 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:48,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:49:48,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:49:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash 538088750, now seen corresponding path program 1 times [2022-07-21 08:49:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:48,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352483232] [2022-07-21 08:49:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352483232] [2022-07-21 08:49:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352483232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:48,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:49:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079815657] [2022-07-21 08:49:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:49:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:49:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:49:48,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 159 [2022-07-21 08:49:48,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 132 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 122.625) internal successors, (981), 8 states have internal predecessors, (981), 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) [2022-07-21 08:49:48,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:48,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 159 [2022-07-21 08:49:48,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:49,123 INFO L129 PetriNetUnfolder]: 44/474 cut-off events. [2022-07-21 08:49:49,124 INFO L130 PetriNetUnfolder]: For 113/115 co-relation queries the response was YES. [2022-07-21 08:49:49,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 474 events. 44/474 cut-off events. For 113/115 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2223 event pairs, 11 based on Foata normal form. 4/475 useless extension candidates. Maximal degree in co-relation 917. Up to 59 conditions per place. [2022-07-21 08:49:49,125 INFO L132 encePairwiseOnDemand]: 145/159 looper letters, 0 selfloop transitions, 0 changer transitions 158/158 dead transitions. [2022-07-21 08:49:49,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 158 transitions, 664 flow [2022-07-21 08:49:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:49:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:49:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1967 transitions. [2022-07-21 08:49:49,128 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.773191823899371 [2022-07-21 08:49:49,128 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1967 transitions. [2022-07-21 08:49:49,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1967 transitions. [2022-07-21 08:49:49,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:49,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1967 transitions. [2022-07-21 08:49:49,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.9375) internal successors, (1967), 16 states have internal predecessors, (1967), 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) [2022-07-21 08:49:49,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 159.0) internal successors, (2703), 17 states have internal predecessors, (2703), 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) [2022-07-21 08:49:49,136 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 159.0) internal successors, (2703), 17 states have internal predecessors, (2703), 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) [2022-07-21 08:49:49,136 INFO L186 Difference]: Start difference. First operand has 146 places, 132 transitions, 439 flow. Second operand 16 states and 1967 transitions. [2022-07-21 08:49:49,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 158 transitions, 664 flow [2022-07-21 08:49:49,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 158 transitions, 647 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-07-21 08:49:49,139 INFO L242 Difference]: Finished difference. Result has 152 places, 0 transitions, 0 flow [2022-07-21 08:49:49,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=152, PETRI_TRANSITIONS=0} [2022-07-21 08:49:49,140 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2022-07-21 08:49:49,140 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 0 transitions, 0 flow [2022-07-21 08:49:49,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.625) internal successors, (981), 8 states have internal predecessors, (981), 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) [2022-07-21 08:49:49,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-21 08:49:49,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-21 08:49:49,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-21 08:49:49,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-21 08:49:49,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-07-21 08:49:49,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-07-21 08:49:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:49:49,143 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:49:49,145 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:49:49,145 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:49:49,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:49:49 BasicIcfg [2022-07-21 08:49:49,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:49:49,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:49:49,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:49:49,149 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:49:49,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:49:45" (3/4) ... [2022-07-21 08:49:49,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:49:49,155 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-07-21 08:49:49,155 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-21 08:49:49,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-21 08:49:49,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:49:49,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:49:49,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:49:49,181 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:49:49,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:49:49,182 INFO L158 Benchmark]: Toolchain (without parser) took 4685.15ms. Allocated memory was 52.4MB in the beginning and 180.4MB in the end (delta: 127.9MB). Free memory was 28.1MB in the beginning and 51.7MB in the end (delta: -23.7MB). Peak memory consumption was 103.7MB. Max. memory is 16.1GB. [2022-07-21 08:49:49,182 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:49:49,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.62ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.8MB in the beginning and 36.4MB in the end (delta: -8.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-07-21 08:49:49,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.09ms. Allocated memory is still 62.9MB. Free memory was 36.4MB in the beginning and 34.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:49:49,183 INFO L158 Benchmark]: Boogie Preprocessor took 60.24ms. Allocated memory is still 62.9MB. Free memory was 34.2MB in the beginning and 45.1MB in the end (delta: -10.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-07-21 08:49:49,183 INFO L158 Benchmark]: RCFGBuilder took 526.42ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 29.9MB in the end (delta: 15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:49:49,183 INFO L158 Benchmark]: TraceAbstraction took 3580.02ms. Allocated memory was 62.9MB in the beginning and 180.4MB in the end (delta: 117.4MB). Free memory was 29.2MB in the beginning and 55.9MB in the end (delta: -26.7MB). Peak memory consumption was 93.2MB. Max. memory is 16.1GB. [2022-07-21 08:49:49,184 INFO L158 Benchmark]: Witness Printer took 32.42ms. Allocated memory is still 180.4MB. Free memory was 55.9MB in the beginning and 51.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:49:49,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.62ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.8MB in the beginning and 36.4MB in the end (delta: -8.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.09ms. Allocated memory is still 62.9MB. Free memory was 36.4MB in the beginning and 34.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.24ms. Allocated memory is still 62.9MB. Free memory was 34.2MB in the beginning and 45.1MB in the end (delta: -10.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * RCFGBuilder took 526.42ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 29.9MB in the end (delta: 15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3580.02ms. Allocated memory was 62.9MB in the beginning and 180.4MB in the end (delta: 117.4MB). Free memory was 29.2MB in the beginning and 55.9MB in the end (delta: -26.7MB). Peak memory consumption was 93.2MB. Max. memory is 16.1GB. * Witness Printer took 32.42ms. Allocated memory is still 180.4MB. Free memory was 55.9MB in the beginning and 51.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 513 mSDsluCounter, 618 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 498 mSDsCounter, 262 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 914 IncrementalHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 262 mSolverCounterUnsat, 176 mSDtfsCounter, 914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1547occurred in iteration=4, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 628 NumberOfCodeBlocks, 628 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 620 ConstructedInterpolants, 0 QuantifiedInterpolants, 2713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:49:49,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE