./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:19:56,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:19:56,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:19:56,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:19:56,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:19:56,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:19:56,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:19:56,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:19:56,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:19:56,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:19:56,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:19:56,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:19:56,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:19:56,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:19:56,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:19:56,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:19:56,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:19:56,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:19:56,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:19:56,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:19:56,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:19:56,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:19:56,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:19:56,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:19:56,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:19:56,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:19:56,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:19:56,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:19:56,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:19:56,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:19:56,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:19:56,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:19:56,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:19:56,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:19:56,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:19:56,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:19:56,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:19:56,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:19:56,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:19:56,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:19:56,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:19:56,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:19:56,924 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:19:56,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:19:56,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:19:56,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:19:56,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:19:56,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:19:56,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:19:56,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:19:56,928 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:19:56,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:19:56,929 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:19:56,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:19:56,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:19:56,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:19:56,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:19:56,930 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:19:56,930 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:19:56,930 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:19:56,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:19:56,931 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:19:56,931 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:19:56,931 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:19:56,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:19:56,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:19:56,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:19:56,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:19:56,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:19:56,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:19:56,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:19:56,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:19:56,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:19:56,933 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:19:56,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:19:56,933 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:19:56,934 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:19:57,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:19:57,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:19:57,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:19:57,234 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:19:57,234 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:19:57,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2023-08-29 21:19:58,362 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:19:58,638 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:19:58,639 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2023-08-29 21:19:58,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/621c91c01/ef87ff49d30d48f0ad8e066e19627089/FLAG66021f65f [2023-08-29 21:19:58,681 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/621c91c01/ef87ff49d30d48f0ad8e066e19627089 [2023-08-29 21:19:58,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:19:58,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:19:58,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:19:58,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:19:58,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:19:58,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:19:58" (1/1) ... [2023-08-29 21:19:58,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be0cde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:58, skipping insertion in model container [2023-08-29 21:19:58,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:19:58" (1/1) ... [2023-08-29 21:19:58,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:19:58,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:19:59,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:19:59,227 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:19:59,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:19:59,349 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:19:59,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59 WrapperNode [2023-08-29 21:19:59,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:19:59,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:19:59,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:19:59,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:19:59,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,404 INFO L138 Inliner]: procedures = 368, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 120 [2023-08-29 21:19:59,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:19:59,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:19:59,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:19:59,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:19:59,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:19:59,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:19:59,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:19:59,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:19:59,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (1/1) ... [2023-08-29 21:19:59,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:19:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:19:59,475 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) [2023-08-29 21:19:59,480 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 [2023-08-29 21:19:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:19:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 21:19:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:19:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:19:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:19:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:19:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 21:19:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:19:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 21:19:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:19:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:19:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:19:59,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:19:59,507 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:19:59,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:19:59,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:20:00,043 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:20:00,050 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:20:00,050 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-29 21:20:00,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:20:00 BoogieIcfgContainer [2023-08-29 21:20:00,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:20:00,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:20:00,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:20:00,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:20:00,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:19:58" (1/3) ... [2023-08-29 21:20:00,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af66e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:20:00, skipping insertion in model container [2023-08-29 21:20:00,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:59" (2/3) ... [2023-08-29 21:20:00,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af66e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:20:00, skipping insertion in model container [2023-08-29 21:20:00,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:20:00" (3/3) ... [2023-08-29 21:20:00,062 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2023-08-29 21:20:00,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:20:00,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-08-29 21:20:00,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:20:00,181 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:20:00,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 167 transitions, 339 flow [2023-08-29 21:20:00,296 INFO L130 PetriNetUnfolder]: 6/166 cut-off events. [2023-08-29 21:20:00,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:20:00,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 166 events. 6/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 410 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-08-29 21:20:00,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 167 transitions, 339 flow [2023-08-29 21:20:00,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 166 transitions, 335 flow [2023-08-29 21:20:00,313 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:20:00,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 166 transitions, 335 flow [2023-08-29 21:20:00,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 166 transitions, 335 flow [2023-08-29 21:20:00,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 166 transitions, 335 flow [2023-08-29 21:20:00,373 INFO L130 PetriNetUnfolder]: 6/166 cut-off events. [2023-08-29 21:20:00,373 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:20:00,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 166 events. 6/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 409 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-08-29 21:20:00,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 6762 [2023-08-29 21:20:05,936 INFO L134 LiptonReduction]: Checked pairs total: 20365 [2023-08-29 21:20:05,937 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-29 21:20:05,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:20:05,959 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66893881, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:20:05,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-08-29 21:20:05,962 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-29 21:20:05,962 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:20:05,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:05,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:20:05,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:05,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:05,967 INFO L85 PathProgramCache]: Analyzing trace with hash 18341, now seen corresponding path program 1 times [2023-08-29 21:20:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683324559] [2023-08-29 21:20:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:06,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683324559] [2023-08-29 21:20:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683324559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:20:06,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:20:06,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:20:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247095198] [2023-08-29 21:20:06,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:20:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:20:06,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:20:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:20:06,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 295 [2023-08-29 21:20:06,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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) [2023-08-29 21:20:06,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:06,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 295 [2023-08-29 21:20:06,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:06,742 INFO L130 PetriNetUnfolder]: 563/1689 cut-off events. [2023-08-29 21:20:06,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:20:06,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 1689 events. 563/1689 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11656 event pairs, 288 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 2800. Up to 655 conditions per place. [2023-08-29 21:20:06,757 INFO L137 encePairwiseOnDemand]: 283/295 looper letters, 74 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-08-29 21:20:06,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 359 flow [2023-08-29 21:20:06,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:20:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:20:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-29 21:20:06,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6271186440677966 [2023-08-29 21:20:06,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-29 21:20:06,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-29 21:20:06,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:06,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-29 21:20:06,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2023-08-29 21:20:06,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:20:06,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:20:06,796 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 143 flow. Second operand 3 states and 555 transitions. [2023-08-29 21:20:06,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 359 flow [2023-08-29 21:20:06,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:20:06,802 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 162 flow [2023-08-29 21:20:06,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-08-29 21:20:06,808 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2023-08-29 21:20:06,809 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 162 flow [2023-08-29 21:20:06,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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) [2023-08-29 21:20:06,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:06,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:20:06,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:20:06,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:06,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash 18367, now seen corresponding path program 1 times [2023-08-29 21:20:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436546531] [2023-08-29 21:20:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:06,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:07,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436546531] [2023-08-29 21:20:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436546531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:20:07,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:20:07,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:20:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589264908] [2023-08-29 21:20:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:20:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:20:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:20:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:20:07,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 295 [2023-08-29 21:20:07,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-08-29 21:20:07,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:07,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 295 [2023-08-29 21:20:07,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:07,377 INFO L130 PetriNetUnfolder]: 631/1724 cut-off events. [2023-08-29 21:20:07,378 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-29 21:20:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1724 events. 631/1724 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11367 event pairs, 576 based on Foata normal form. 0/1038 useless extension candidates. Maximal degree in co-relation 3057. Up to 1267 conditions per place. [2023-08-29 21:20:07,386 INFO L137 encePairwiseOnDemand]: 292/295 looper letters, 47 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-29 21:20:07,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 262 flow [2023-08-29 21:20:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:20:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:20:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-29 21:20:07,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56045197740113 [2023-08-29 21:20:07,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-29 21:20:07,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-29 21:20:07,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:07,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-29 21:20:07,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2023-08-29 21:20:07,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:20:07,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:20:07,395 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 162 flow. Second operand 3 states and 496 transitions. [2023-08-29 21:20:07,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 262 flow [2023-08-29 21:20:07,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:20:07,398 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 166 flow [2023-08-29 21:20:07,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-08-29 21:20:07,399 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2023-08-29 21:20:07,399 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 166 flow [2023-08-29 21:20:07,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-08-29 21:20:07,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:07,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:20:07,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:20:07,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:07,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:07,401 INFO L85 PathProgramCache]: Analyzing trace with hash 18365, now seen corresponding path program 1 times [2023-08-29 21:20:07,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:07,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019209315] [2023-08-29 21:20:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:07,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019209315] [2023-08-29 21:20:07,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019209315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:20:07,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:20:07,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:20:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083257234] [2023-08-29 21:20:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:20:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:20:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:20:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:20:07,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 295 [2023-08-29 21:20:07,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2023-08-29 21:20:07,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:07,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 295 [2023-08-29 21:20:07,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:07,802 INFO L130 PetriNetUnfolder]: 566/1583 cut-off events. [2023-08-29 21:20:07,803 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-29 21:20:07,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 1583 events. 566/1583 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10363 event pairs, 451 based on Foata normal form. 36/1000 useless extension candidates. Maximal degree in co-relation 2791. Up to 994 conditions per place. [2023-08-29 21:20:07,810 INFO L137 encePairwiseOnDemand]: 289/295 looper letters, 61 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-29 21:20:07,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 320 flow [2023-08-29 21:20:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:20:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:20:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-08-29 21:20:07,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090395480225989 [2023-08-29 21:20:07,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-08-29 21:20:07,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-08-29 21:20:07,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:07,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-08-29 21:20:07,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2023-08-29 21:20:07,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:20:07,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:20:07,816 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 166 flow. Second operand 3 states and 539 transitions. [2023-08-29 21:20:07,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 320 flow [2023-08-29 21:20:07,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 316 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 21:20:07,819 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 164 flow [2023-08-29 21:20:07,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2023-08-29 21:20:07,820 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2023-08-29 21:20:07,820 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 164 flow [2023-08-29 21:20:07,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2023-08-29 21:20:07,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:07,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:20:07,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:20:07,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:07,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash 569888, now seen corresponding path program 1 times [2023-08-29 21:20:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215955695] [2023-08-29 21:20:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215955695] [2023-08-29 21:20:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215955695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:20:08,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021467429] [2023-08-29 21:20:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:08,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:08,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:20:08,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:20:08,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 21:20:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:08,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:20:08,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:20:08,200 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-29 21:20:08,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-29 21:20:08,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:08,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:20:08,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:08,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:20:08,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:20:08,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-08-29 21:20:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:10,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021467429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:20:10,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:20:10,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-29 21:20:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314700781] [2023-08-29 21:20:10,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:20:10,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 21:20:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 21:20:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 21:20:11,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 295 [2023-08-29 21:20:11,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 138.125) internal successors, (1105), 8 states have internal predecessors, (1105), 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) [2023-08-29 21:20:11,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:11,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 295 [2023-08-29 21:20:11,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:12,448 INFO L130 PetriNetUnfolder]: 704/1809 cut-off events. [2023-08-29 21:20:12,449 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2023-08-29 21:20:12,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 1809 events. 704/1809 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11686 event pairs, 3 based on Foata normal form. 3/1084 useless extension candidates. Maximal degree in co-relation 3382. Up to 763 conditions per place. [2023-08-29 21:20:12,457 INFO L137 encePairwiseOnDemand]: 285/295 looper letters, 119 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2023-08-29 21:20:12,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 612 flow [2023-08-29 21:20:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 21:20:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 21:20:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1231 transitions. [2023-08-29 21:20:12,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216101694915254 [2023-08-29 21:20:12,461 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1231 transitions. [2023-08-29 21:20:12,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1231 transitions. [2023-08-29 21:20:12,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:12,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1231 transitions. [2023-08-29 21:20:12,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.875) internal successors, (1231), 8 states have internal predecessors, (1231), 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) [2023-08-29 21:20:12,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 295.0) internal successors, (2655), 9 states have internal predecessors, (2655), 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) [2023-08-29 21:20:12,469 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 295.0) internal successors, (2655), 9 states have internal predecessors, (2655), 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) [2023-08-29 21:20:12,470 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 164 flow. Second operand 8 states and 1231 transitions. [2023-08-29 21:20:12,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 612 flow [2023-08-29 21:20:12,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:20:12,476 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 226 flow [2023-08-29 21:20:12,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-08-29 21:20:12,478 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 7 predicate places. [2023-08-29 21:20:12,479 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 226 flow [2023-08-29 21:20:12,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.125) internal successors, (1105), 8 states have internal predecessors, (1105), 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) [2023-08-29 21:20:12,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:12,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-29 21:20:12,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 21:20:12,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:12,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:12,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 17667013, now seen corresponding path program 1 times [2023-08-29 21:20:12,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:12,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11404152] [2023-08-29 21:20:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:12,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11404152] [2023-08-29 21:20:12,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11404152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:20:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584413409] [2023-08-29 21:20:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:12,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:12,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:20:12,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:20:12,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 21:20:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:12,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:20:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:20:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:12,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:20:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584413409] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:20:12,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:20:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 21:20:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008509037] [2023-08-29 21:20:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:20:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 21:20:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 21:20:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-29 21:20:13,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 295 [2023-08-29 21:20:13,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 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) [2023-08-29 21:20:13,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:13,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 295 [2023-08-29 21:20:13,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:13,794 INFO L130 PetriNetUnfolder]: 1533/4514 cut-off events. [2023-08-29 21:20:13,795 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2023-08-29 21:20:13,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 4514 events. 1533/4514 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 29929 event pairs, 80 based on Foata normal form. 89/2930 useless extension candidates. Maximal degree in co-relation 8079. Up to 496 conditions per place. [2023-08-29 21:20:13,816 INFO L137 encePairwiseOnDemand]: 285/295 looper letters, 208 selfloop transitions, 16 changer transitions 0/244 dead transitions. [2023-08-29 21:20:13,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 244 transitions, 1062 flow [2023-08-29 21:20:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 21:20:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 21:20:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1465 transitions. [2023-08-29 21:20:13,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207627118644068 [2023-08-29 21:20:13,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1465 transitions. [2023-08-29 21:20:13,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1465 transitions. [2023-08-29 21:20:13,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:13,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1465 transitions. [2023-08-29 21:20:13,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.125) internal successors, (1465), 8 states have internal predecessors, (1465), 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) [2023-08-29 21:20:13,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 295.0) internal successors, (2655), 9 states have internal predecessors, (2655), 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) [2023-08-29 21:20:13,828 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 295.0) internal successors, (2655), 9 states have internal predecessors, (2655), 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) [2023-08-29 21:20:13,828 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 226 flow. Second operand 8 states and 1465 transitions. [2023-08-29 21:20:13,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 244 transitions, 1062 flow [2023-08-29 21:20:13,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 244 transitions, 1033 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-29 21:20:13,833 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 336 flow [2023-08-29 21:20:13,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2023-08-29 21:20:13,834 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 18 predicate places. [2023-08-29 21:20:13,834 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 336 flow [2023-08-29 21:20:13,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 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) [2023-08-29 21:20:13,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:13,835 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-29 21:20:13,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 21:20:14,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:14,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:14,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:14,042 INFO L85 PathProgramCache]: Analyzing trace with hash -201828353, now seen corresponding path program 2 times [2023-08-29 21:20:14,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:14,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703642946] [2023-08-29 21:20:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:14,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703642946] [2023-08-29 21:20:14,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703642946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:20:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372903500] [2023-08-29 21:20:14,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:20:14,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:14,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:20:14,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:20:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 21:20:14,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 21:20:14,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:20:14,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-29 21:20:14,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:20:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:20:14,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:14,836 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-29 21:20:14,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-29 21:20:14,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:20:14,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:14,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:20:14,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:14,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:20:14,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:20:15,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:20:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:15,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:20:17,130 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:20:17,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-08-29 21:20:23,261 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 21:20:23,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:20:23,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2023-08-29 21:20:23,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:20:23,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 76 [2023-08-29 21:20:27,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:20:27,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 82 [2023-08-29 21:20:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:31,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372903500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:20:31,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:20:31,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-29 21:20:31,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448804715] [2023-08-29 21:20:31,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:20:31,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 21:20:31,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 21:20:31,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-29 21:20:34,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 21:20:41,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-08-29 21:20:41,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 336 flow. Second operand has 17 states, 17 states have (on average 137.05882352941177) internal successors, (2330), 17 states have internal predecessors, (2330), 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) [2023-08-29 21:20:41,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:41,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-08-29 21:20:41,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:43,733 INFO L130 PetriNetUnfolder]: 1913/4995 cut-off events. [2023-08-29 21:20:43,733 INFO L131 PetriNetUnfolder]: For 1080/1080 co-relation queries the response was YES. [2023-08-29 21:20:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10010 conditions, 4995 events. 1913/4995 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 32899 event pairs, 3 based on Foata normal form. 6/3057 useless extension candidates. Maximal degree in co-relation 9976. Up to 1919 conditions per place. [2023-08-29 21:20:43,768 INFO L137 encePairwiseOnDemand]: 288/295 looper letters, 145 selfloop transitions, 23 changer transitions 0/184 dead transitions. [2023-08-29 21:20:43,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 184 transitions, 1074 flow [2023-08-29 21:20:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 21:20:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 21:20:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1800 transitions. [2023-08-29 21:20:43,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-29 21:20:43,773 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1800 transitions. [2023-08-29 21:20:43,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1800 transitions. [2023-08-29 21:20:43,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:43,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1800 transitions. [2023-08-29 21:20:43,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.0) internal successors, (1800), 12 states have internal predecessors, (1800), 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) [2023-08-29 21:20:43,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 295.0) internal successors, (3835), 13 states have internal predecessors, (3835), 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) [2023-08-29 21:20:43,784 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 295.0) internal successors, (3835), 13 states have internal predecessors, (3835), 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) [2023-08-29 21:20:43,784 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 336 flow. Second operand 12 states and 1800 transitions. [2023-08-29 21:20:43,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 184 transitions, 1074 flow [2023-08-29 21:20:43,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 184 transitions, 1030 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-29 21:20:43,793 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 418 flow [2023-08-29 21:20:43,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=418, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2023-08-29 21:20:43,796 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 29 predicate places. [2023-08-29 21:20:43,797 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 418 flow [2023-08-29 21:20:43,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 137.05882352941177) internal successors, (2330), 17 states have internal predecessors, (2330), 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) [2023-08-29 21:20:43,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:43,798 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1] [2023-08-29 21:20:43,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 21:20:44,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:44,003 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:44,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash -683502587, now seen corresponding path program 2 times [2023-08-29 21:20:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:44,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881696135] [2023-08-29 21:20:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:44,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881696135] [2023-08-29 21:20:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881696135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:20:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915510548] [2023-08-29 21:20:44,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:20:44,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:44,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:20:44,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:20:44,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 21:20:44,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 21:20:44,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:20:44,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 21:20:44,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:20:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:44,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:20:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915510548] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:20:44,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:20:44,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-08-29 21:20:44,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872080845] [2023-08-29 21:20:44,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:20:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:20:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:20:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:20:44,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 295 [2023-08-29 21:20:44,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 418 flow. Second operand has 12 states, 12 states have (on average 154.08333333333334) internal successors, (1849), 12 states have internal predecessors, (1849), 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) [2023-08-29 21:20:44,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:44,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 295 [2023-08-29 21:20:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:46,020 INFO L130 PetriNetUnfolder]: 2484/7372 cut-off events. [2023-08-29 21:20:46,020 INFO L131 PetriNetUnfolder]: For 2767/2767 co-relation queries the response was YES. [2023-08-29 21:20:46,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14414 conditions, 7372 events. 2484/7372 cut-off events. For 2767/2767 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 49191 event pairs, 80 based on Foata normal form. 72/4699 useless extension candidates. Maximal degree in co-relation 14343. Up to 495 conditions per place. [2023-08-29 21:20:46,057 INFO L137 encePairwiseOnDemand]: 285/295 looper letters, 326 selfloop transitions, 24 changer transitions 0/370 dead transitions. [2023-08-29 21:20:46,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 370 transitions, 1758 flow [2023-08-29 21:20:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 21:20:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 21:20:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2202 transitions. [2023-08-29 21:20:46,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6220338983050847 [2023-08-29 21:20:46,062 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2202 transitions. [2023-08-29 21:20:46,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2202 transitions. [2023-08-29 21:20:46,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:46,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2202 transitions. [2023-08-29 21:20:46,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 183.5) internal successors, (2202), 12 states have internal predecessors, (2202), 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) [2023-08-29 21:20:46,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 295.0) internal successors, (3835), 13 states have internal predecessors, (3835), 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) [2023-08-29 21:20:46,074 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 295.0) internal successors, (3835), 13 states have internal predecessors, (3835), 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) [2023-08-29 21:20:46,074 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 418 flow. Second operand 12 states and 2202 transitions. [2023-08-29 21:20:46,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 370 transitions, 1758 flow [2023-08-29 21:20:46,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 370 transitions, 1726 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-29 21:20:46,090 INFO L231 Difference]: Finished difference. Result has 112 places, 84 transitions, 502 flow [2023-08-29 21:20:46,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=502, PETRI_PLACES=112, PETRI_TRANSITIONS=84} [2023-08-29 21:20:46,090 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 41 predicate places. [2023-08-29 21:20:46,091 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 84 transitions, 502 flow [2023-08-29 21:20:46,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.08333333333334) internal successors, (1849), 12 states have internal predecessors, (1849), 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) [2023-08-29 21:20:46,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:46,091 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-29 21:20:46,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 21:20:46,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:46,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:46,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1904380833, now seen corresponding path program 3 times [2023-08-29 21:20:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:46,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842917247] [2023-08-29 21:20:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:20:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842917247] [2023-08-29 21:20:46,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842917247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:20:46,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:20:46,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-29 21:20:46,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245184235] [2023-08-29 21:20:46,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:20:46,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 21:20:46,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:20:46,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 21:20:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 21:20:46,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 295 [2023-08-29 21:20:46,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 84 transitions, 502 flow. Second operand has 13 states, 13 states have (on average 153.92307692307693) internal successors, (2001), 13 states have internal predecessors, (2001), 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) [2023-08-29 21:20:46,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:20:46,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 295 [2023-08-29 21:20:46,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:20:48,422 INFO L130 PetriNetUnfolder]: 2466/7353 cut-off events. [2023-08-29 21:20:48,422 INFO L131 PetriNetUnfolder]: For 3860/3860 co-relation queries the response was YES. [2023-08-29 21:20:48,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14741 conditions, 7353 events. 2466/7353 cut-off events. For 3860/3860 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 49140 event pairs, 80 based on Foata normal form. 19/4627 useless extension candidates. Maximal degree in co-relation 14673. Up to 477 conditions per place. [2023-08-29 21:20:48,464 INFO L137 encePairwiseOnDemand]: 289/295 looper letters, 325 selfloop transitions, 22 changer transitions 0/367 dead transitions. [2023-08-29 21:20:48,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 367 transitions, 1794 flow [2023-08-29 21:20:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:20:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:20:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2339 transitions. [2023-08-29 21:20:48,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6099087353324641 [2023-08-29 21:20:48,477 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2339 transitions. [2023-08-29 21:20:48,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2339 transitions. [2023-08-29 21:20:48,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:20:48,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2339 transitions. [2023-08-29 21:20:48,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 179.92307692307693) internal successors, (2339), 13 states have internal predecessors, (2339), 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) [2023-08-29 21:20:48,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 295.0) internal successors, (4130), 14 states have internal predecessors, (4130), 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) [2023-08-29 21:20:48,489 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 295.0) internal successors, (4130), 14 states have internal predecessors, (4130), 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) [2023-08-29 21:20:48,490 INFO L175 Difference]: Start difference. First operand has 112 places, 84 transitions, 502 flow. Second operand 13 states and 2339 transitions. [2023-08-29 21:20:48,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 367 transitions, 1794 flow [2023-08-29 21:20:48,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 367 transitions, 1717 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-08-29 21:20:48,504 INFO L231 Difference]: Finished difference. Result has 112 places, 81 transitions, 449 flow [2023-08-29 21:20:48,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=449, PETRI_PLACES=112, PETRI_TRANSITIONS=81} [2023-08-29 21:20:48,507 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 41 predicate places. [2023-08-29 21:20:48,507 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 81 transitions, 449 flow [2023-08-29 21:20:48,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 153.92307692307693) internal successors, (2001), 13 states have internal predecessors, (2001), 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) [2023-08-29 21:20:48,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:20:48,508 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-29 21:20:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 21:20:48,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:20:48,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:20:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1904380859, now seen corresponding path program 3 times [2023-08-29 21:20:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:20:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392280499] [2023-08-29 21:20:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:20:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:20:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:20:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-08-29 21:20:49,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:20:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392280499] [2023-08-29 21:20:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392280499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:20:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562239306] [2023-08-29 21:20:49,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:20:49,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:20:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:20:49,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:20:49,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 21:21:40,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-29 21:21:40,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:21:40,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 21:21:40,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:21:40,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:21:40,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,931 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-29 21:21:40,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,952 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-29 21:21:40,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:40,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:40,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:41,004 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-29 21:21:41,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-08-29 21:21:41,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:21:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-08-29 21:21:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562239306] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:21:41,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:21:41,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 3 [2023-08-29 21:21:41,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872995320] [2023-08-29 21:21:41,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:21:41,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:21:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:21:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:21:41,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 295 [2023-08-29 21:21:41,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 81 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 158.6) internal successors, (793), 5 states have internal predecessors, (793), 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) [2023-08-29 21:21:41,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:41,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 295 [2023-08-29 21:21:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:21:42,420 INFO L130 PetriNetUnfolder]: 2466/7256 cut-off events. [2023-08-29 21:21:42,420 INFO L131 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2023-08-29 21:21:42,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14190 conditions, 7256 events. 2466/7256 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 50024 event pairs, 2256 based on Foata normal form. 0/4541 useless extension candidates. Maximal degree in co-relation 14086. Up to 4825 conditions per place. [2023-08-29 21:21:42,463 INFO L137 encePairwiseOnDemand]: 292/295 looper letters, 75 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-29 21:21:42,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 97 transitions, 615 flow [2023-08-29 21:21:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:21:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:21:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-29 21:21:42,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988700564971752 [2023-08-29 21:21:42,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-29 21:21:42,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-29 21:21:42,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:21:42,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-29 21:21:42,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2023-08-29 21:21:42,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:42,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:42,469 INFO L175 Difference]: Start difference. First operand has 112 places, 81 transitions, 449 flow. Second operand 3 states and 530 transitions. [2023-08-29 21:21:42,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 97 transitions, 615 flow [2023-08-29 21:21:42,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 571 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-29 21:21:42,479 INFO L231 Difference]: Finished difference. Result has 101 places, 80 transitions, 387 flow [2023-08-29 21:21:42,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=101, PETRI_TRANSITIONS=80} [2023-08-29 21:21:42,480 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 30 predicate places. [2023-08-29 21:21:42,480 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 387 flow [2023-08-29 21:21:42,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.6) internal successors, (793), 5 states have internal predecessors, (793), 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) [2023-08-29 21:21:42,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:21:42,480 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-29 21:21:42,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 21:21:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:21:42,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:21:42,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:21:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1904380857, now seen corresponding path program 1 times [2023-08-29 21:21:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:21:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164886363] [2023-08-29 21:21:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:42,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:21:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-29 21:21:43,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:21:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164886363] [2023-08-29 21:21:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164886363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:21:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946155099] [2023-08-29 21:21:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:43,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:21:43,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:21:43,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:21:43,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 21:21:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:43,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-29 21:21:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:21:43,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 21:21:43,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:43,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:21:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 21:21:43,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:21:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 21:21:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946155099] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:21:44,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:21:44,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-08-29 21:21:44,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074872336] [2023-08-29 21:21:44,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:21:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 21:21:44,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:44,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 21:21:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-08-29 21:21:44,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 295 [2023-08-29 21:21:45,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 80 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 154.44444444444446) internal successors, (1390), 9 states have internal predecessors, (1390), 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) [2023-08-29 21:21:45,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:45,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 295 [2023-08-29 21:21:45,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:21:45,696 INFO L130 PetriNetUnfolder]: 2466/7255 cut-off events. [2023-08-29 21:21:45,696 INFO L131 PetriNetUnfolder]: For 2533/2533 co-relation queries the response was YES. [2023-08-29 21:21:45,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13998 conditions, 7255 events. 2466/7255 cut-off events. For 2533/2533 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 50067 event pairs, 2256 based on Foata normal form. 0/4541 useless extension candidates. Maximal degree in co-relation 13916. Up to 4824 conditions per place. [2023-08-29 21:21:45,727 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 89 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2023-08-29 21:21:45,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 619 flow [2023-08-29 21:21:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:21:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:21:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 687 transitions. [2023-08-29 21:21:45,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822033898305085 [2023-08-29 21:21:45,730 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 687 transitions. [2023-08-29 21:21:45,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 687 transitions. [2023-08-29 21:21:45,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:21:45,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 687 transitions. [2023-08-29 21:21:45,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2023-08-29 21:21:45,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 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) [2023-08-29 21:21:45,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 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) [2023-08-29 21:21:45,734 INFO L175 Difference]: Start difference. First operand has 101 places, 80 transitions, 387 flow. Second operand 4 states and 687 transitions. [2023-08-29 21:21:45,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 619 flow [2023-08-29 21:21:45,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 615 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:21:45,743 INFO L231 Difference]: Finished difference. Result has 101 places, 79 transitions, 369 flow [2023-08-29 21:21:45,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=369, PETRI_PLACES=101, PETRI_TRANSITIONS=79} [2023-08-29 21:21:45,744 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 30 predicate places. [2023-08-29 21:21:45,744 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 79 transitions, 369 flow [2023-08-29 21:21:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 154.44444444444446) internal successors, (1390), 9 states have internal predecessors, (1390), 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) [2023-08-29 21:21:45,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:21:45,745 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:21:45,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 21:21:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:21:45,952 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:21:45,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:21:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2031400312, now seen corresponding path program 1 times [2023-08-29 21:21:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:21:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412789116] [2023-08-29 21:21:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:21:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 21:21:46,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:21:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412789116] [2023-08-29 21:21:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412789116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:21:46,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:21:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:21:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306478508] [2023-08-29 21:21:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:21:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:21:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:21:46,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:21:46,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 295 [2023-08-29 21:21:46,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 79 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2023-08-29 21:21:46,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:46,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 295 [2023-08-29 21:21:46,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:21:46,825 INFO L130 PetriNetUnfolder]: 2296/6757 cut-off events. [2023-08-29 21:21:46,826 INFO L131 PetriNetUnfolder]: For 2533/2533 co-relation queries the response was YES. [2023-08-29 21:21:46,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13194 conditions, 6757 events. 2296/6757 cut-off events. For 2533/2533 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 45654 event pairs, 2160 based on Foata normal form. 0/4438 useless extension candidates. Maximal degree in co-relation 13112. Up to 4619 conditions per place. [2023-08-29 21:21:46,851 INFO L137 encePairwiseOnDemand]: 292/295 looper letters, 57 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-08-29 21:21:46,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 77 transitions, 481 flow [2023-08-29 21:21:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:21:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:21:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-29 21:21:46,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694915254237288 [2023-08-29 21:21:46,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-29 21:21:46,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-29 21:21:46,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:21:46,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-29 21:21:46,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2023-08-29 21:21:46,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:46,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:46,856 INFO L175 Difference]: Start difference. First operand has 101 places, 79 transitions, 369 flow. Second operand 3 states and 504 transitions. [2023-08-29 21:21:46,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 77 transitions, 481 flow [2023-08-29 21:21:46,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 77 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:21:46,865 INFO L231 Difference]: Finished difference. Result has 98 places, 77 transitions, 359 flow [2023-08-29 21:21:46,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2023-08-29 21:21:46,865 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 27 predicate places. [2023-08-29 21:21:46,865 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 359 flow [2023-08-29 21:21:46,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2023-08-29 21:21:46,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:21:46,866 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:21:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 21:21:46,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:21:46,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:21:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2031400311, now seen corresponding path program 1 times [2023-08-29 21:21:46,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:21:46,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352764804] [2023-08-29 21:21:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:21:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 21:21:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:21:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352764804] [2023-08-29 21:21:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352764804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:21:46,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:21:46,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:21:46,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559840269] [2023-08-29 21:21:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:21:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:21:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:21:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:21:47,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 295 [2023-08-29 21:21:47,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-08-29 21:21:47,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:47,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 295 [2023-08-29 21:21:47,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:21:47,879 INFO L130 PetriNetUnfolder]: 2126/6259 cut-off events. [2023-08-29 21:21:47,879 INFO L131 PetriNetUnfolder]: For 2399/2399 co-relation queries the response was YES. [2023-08-29 21:21:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 6259 events. 2126/6259 cut-off events. For 2399/2399 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 41204 event pairs, 1936 based on Foata normal form. 0/4182 useless extension candidates. Maximal degree in co-relation 12277. Up to 4143 conditions per place. [2023-08-29 21:21:47,899 INFO L137 encePairwiseOnDemand]: 291/295 looper letters, 72 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-29 21:21:47,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 537 flow [2023-08-29 21:21:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:21:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:21:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-29 21:21:47,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740112994350283 [2023-08-29 21:21:47,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-29 21:21:47,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-29 21:21:47,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:21:47,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-29 21:21:47,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2023-08-29 21:21:47,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:47,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:47,904 INFO L175 Difference]: Start difference. First operand has 98 places, 77 transitions, 359 flow. Second operand 3 states and 508 transitions. [2023-08-29 21:21:47,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 537 flow [2023-08-29 21:21:47,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:21:47,913 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 358 flow [2023-08-29 21:21:47,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2023-08-29 21:21:47,914 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2023-08-29 21:21:47,914 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 358 flow [2023-08-29 21:21:47,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-08-29 21:21:47,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:21:47,914 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:21:47,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 21:21:47,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:21:47,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:21:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2031252661, now seen corresponding path program 1 times [2023-08-29 21:21:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:21:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344645553] [2023-08-29 21:21:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:21:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 21:21:48,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:21:48,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344645553] [2023-08-29 21:21:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344645553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:21:48,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:21:48,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:21:48,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893849882] [2023-08-29 21:21:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:21:48,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:21:48,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:21:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:21:48,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 295 [2023-08-29 21:21:48,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2023-08-29 21:21:48,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:48,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 295 [2023-08-29 21:21:48,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:21:48,799 INFO L130 PetriNetUnfolder]: 2418/5869 cut-off events. [2023-08-29 21:21:48,799 INFO L131 PetriNetUnfolder]: For 3835/3835 co-relation queries the response was YES. [2023-08-29 21:21:48,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12453 conditions, 5869 events. 2418/5869 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 34763 event pairs, 381 based on Foata normal form. 0/4220 useless extension candidates. Maximal degree in co-relation 12424. Up to 3884 conditions per place. [2023-08-29 21:21:48,814 INFO L137 encePairwiseOnDemand]: 289/295 looper letters, 96 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-29 21:21:48,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 117 transitions, 759 flow [2023-08-29 21:21:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:21:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:21:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-29 21:21:48,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112994350282486 [2023-08-29 21:21:48,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-29 21:21:48,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-29 21:21:48,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:21:48,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-29 21:21:48,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2023-08-29 21:21:48,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:48,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:48,819 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 358 flow. Second operand 3 states and 541 transitions. [2023-08-29 21:21:48,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 117 transitions, 759 flow [2023-08-29 21:21:48,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 753 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:21:48,825 INFO L231 Difference]: Finished difference. Result has 99 places, 79 transitions, 411 flow [2023-08-29 21:21:48,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=99, PETRI_TRANSITIONS=79} [2023-08-29 21:21:48,826 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 28 predicate places. [2023-08-29 21:21:48,826 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 411 flow [2023-08-29 21:21:48,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2023-08-29 21:21:48,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:21:48,826 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:21:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 21:21:48,827 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:21:48,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:21:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2031252662, now seen corresponding path program 1 times [2023-08-29 21:21:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:21:48,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403742617] [2023-08-29 21:21:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:48,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:21:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 21:21:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:21:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403742617] [2023-08-29 21:21:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403742617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:21:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:21:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:21:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336108835] [2023-08-29 21:21:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:21:49,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:21:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:21:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:21:49,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 295 [2023-08-29 21:21:49,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-29 21:21:49,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:49,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 295 [2023-08-29 21:21:49,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:21:49,793 INFO L130 PetriNetUnfolder]: 2296/5500 cut-off events. [2023-08-29 21:21:49,793 INFO L131 PetriNetUnfolder]: For 4140/4141 co-relation queries the response was YES. [2023-08-29 21:21:49,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12431 conditions, 5500 events. 2296/5500 cut-off events. For 4140/4141 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 31624 event pairs, 422 based on Foata normal form. 260/4265 useless extension candidates. Maximal degree in co-relation 12402. Up to 3745 conditions per place. [2023-08-29 21:21:49,824 INFO L137 encePairwiseOnDemand]: 292/295 looper letters, 88 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-08-29 21:21:49,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 741 flow [2023-08-29 21:21:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:21:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:21:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-08-29 21:21:49,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6022598870056497 [2023-08-29 21:21:49,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-08-29 21:21:49,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-08-29 21:21:49,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:21:49,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-08-29 21:21:49,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2023-08-29 21:21:49,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:49,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-08-29 21:21:49,832 INFO L175 Difference]: Start difference. First operand has 99 places, 79 transitions, 411 flow. Second operand 3 states and 533 transitions. [2023-08-29 21:21:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 741 flow [2023-08-29 21:21:49,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 106 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:21:49,843 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 408 flow [2023-08-29 21:21:49,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2023-08-29 21:21:49,844 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 27 predicate places. [2023-08-29 21:21:49,844 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 408 flow [2023-08-29 21:21:49,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-29 21:21:49,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:21:49,844 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:21:49,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 21:21:49,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:21:49,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:21:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2034405996, now seen corresponding path program 1 times [2023-08-29 21:21:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:21:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747120132] [2023-08-29 21:21:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:21:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:21:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:21:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747120132] [2023-08-29 21:21:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747120132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:21:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340469743] [2023-08-29 21:21:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:21:50,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:21:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:21:50,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:21:50,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 21:21:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:21:50,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-29 21:21:50,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:21:50,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:21:50,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 21:21:50,796 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:21:50,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:21:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:21:50,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:21:56,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-08-29 21:21:57,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:21:57,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 62 [2023-08-29 21:21:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:21:57,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340469743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:21:57,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:21:57,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-08-29 21:21:57,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873579997] [2023-08-29 21:21:57,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:21:57,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-29 21:21:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:21:57,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-29 21:21:57,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=453, Unknown=0, NotChecked=0, Total=702 [2023-08-29 21:21:59,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 295 [2023-08-29 21:21:59,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 408 flow. Second operand has 27 states, 27 states have (on average 138.40740740740742) internal successors, (3737), 27 states have internal predecessors, (3737), 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) [2023-08-29 21:21:59,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:21:59,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 295 [2023-08-29 21:21:59,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:22:01,350 INFO L130 PetriNetUnfolder]: 2482/6649 cut-off events. [2023-08-29 21:22:01,350 INFO L131 PetriNetUnfolder]: For 3549/3550 co-relation queries the response was YES. [2023-08-29 21:22:01,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14041 conditions, 6649 events. 2482/6649 cut-off events. For 3549/3550 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 40112 event pairs, 85 based on Foata normal form. 360/4868 useless extension candidates. Maximal degree in co-relation 14012. Up to 556 conditions per place. [2023-08-29 21:22:01,374 INFO L137 encePairwiseOnDemand]: 287/295 looper letters, 427 selfloop transitions, 31 changer transitions 0/471 dead transitions. [2023-08-29 21:22:01,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 471 transitions, 2351 flow [2023-08-29 21:22:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-29 21:22:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-29 21:22:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3332 transitions. [2023-08-29 21:22:01,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378531073446328 [2023-08-29 21:22:01,382 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3332 transitions. [2023-08-29 21:22:01,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3332 transitions. [2023-08-29 21:22:01,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:22:01,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3332 transitions. [2023-08-29 21:22:01,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 158.66666666666666) internal successors, (3332), 21 states have internal predecessors, (3332), 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) [2023-08-29 21:22:01,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 295.0) internal successors, (6490), 22 states have internal predecessors, (6490), 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) [2023-08-29 21:22:01,397 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 295.0) internal successors, (6490), 22 states have internal predecessors, (6490), 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) [2023-08-29 21:22:01,397 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 408 flow. Second operand 21 states and 3332 transitions. [2023-08-29 21:22:01,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 471 transitions, 2351 flow [2023-08-29 21:22:01,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 471 transitions, 2325 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 21:22:01,411 INFO L231 Difference]: Finished difference. Result has 114 places, 84 transitions, 494 flow [2023-08-29 21:22:01,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=494, PETRI_PLACES=114, PETRI_TRANSITIONS=84} [2023-08-29 21:22:01,412 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 43 predicate places. [2023-08-29 21:22:01,412 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 84 transitions, 494 flow [2023-08-29 21:22:01,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 138.40740740740742) internal successors, (3737), 27 states have internal predecessors, (3737), 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) [2023-08-29 21:22:01,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:22:01,413 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:22:01,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 21:22:01,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:22:01,625 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:22:01,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:22:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2118669428, now seen corresponding path program 1 times [2023-08-29 21:22:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:22:01,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783390422] [2023-08-29 21:22:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:22:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:22:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:22:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:22:02,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:22:02,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783390422] [2023-08-29 21:22:02,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783390422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:22:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346072910] [2023-08-29 21:22:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:22:02,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:22:02,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:22:02,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:22:02,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 21:22:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:22:02,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-29 21:22:02,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:22:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:02,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 21:22:02,643 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:22:02,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:22:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:22:02,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:22:08,714 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 21:22:12,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-08-29 21:22:12,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:22:12,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 62 [2023-08-29 21:22:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:22:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346072910] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:22:13,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:22:13,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-08-29 21:22:13,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731757769] [2023-08-29 21:22:13,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:22:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-29 21:22:13,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:22:13,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-29 21:22:13,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2023-08-29 21:22:15,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 295 [2023-08-29 21:22:15,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 84 transitions, 494 flow. Second operand has 27 states, 27 states have (on average 136.40740740740742) internal successors, (3683), 27 states have internal predecessors, (3683), 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) [2023-08-29 21:22:15,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:22:15,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 295 [2023-08-29 21:22:15,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:22:18,304 INFO L130 PetriNetUnfolder]: 4963/12868 cut-off events. [2023-08-29 21:22:18,304 INFO L131 PetriNetUnfolder]: For 9483/9488 co-relation queries the response was YES. [2023-08-29 21:22:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27884 conditions, 12868 events. 4963/12868 cut-off events. For 9483/9488 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 90606 event pairs, 190 based on Foata normal form. 8/8891 useless extension candidates. Maximal degree in co-relation 27853. Up to 1276 conditions per place. [2023-08-29 21:22:18,347 INFO L137 encePairwiseOnDemand]: 283/295 looper letters, 745 selfloop transitions, 93 changer transitions 0/850 dead transitions. [2023-08-29 21:22:18,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 850 transitions, 4353 flow [2023-08-29 21:22:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-29 21:22:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-29 21:22:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5724 transitions. [2023-08-29 21:22:18,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389830508474577 [2023-08-29 21:22:18,357 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5724 transitions. [2023-08-29 21:22:18,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5724 transitions. [2023-08-29 21:22:18,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:22:18,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5724 transitions. [2023-08-29 21:22:18,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.0) internal successors, (5724), 36 states have internal predecessors, (5724), 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) [2023-08-29 21:22:18,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 295.0) internal successors, (10915), 37 states have internal predecessors, (10915), 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) [2023-08-29 21:22:18,386 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 295.0) internal successors, (10915), 37 states have internal predecessors, (10915), 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) [2023-08-29 21:22:18,386 INFO L175 Difference]: Start difference. First operand has 114 places, 84 transitions, 494 flow. Second operand 36 states and 5724 transitions. [2023-08-29 21:22:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 850 transitions, 4353 flow [2023-08-29 21:22:18,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 850 transitions, 4144 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-29 21:22:18,415 INFO L231 Difference]: Finished difference. Result has 169 places, 154 transitions, 1207 flow [2023-08-29 21:22:18,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1207, PETRI_PLACES=169, PETRI_TRANSITIONS=154} [2023-08-29 21:22:18,416 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 98 predicate places. [2023-08-29 21:22:18,416 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 154 transitions, 1207 flow [2023-08-29 21:22:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 136.40740740740742) internal successors, (3683), 27 states have internal predecessors, (3683), 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) [2023-08-29 21:22:18,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:22:18,417 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:22:18,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 21:22:18,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 21:22:18,624 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-08-29 21:22:18,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:22:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1357932547, now seen corresponding path program 1 times [2023-08-29 21:22:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:22:18,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239006306] [2023-08-29 21:22:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:22:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:22:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:22:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 11 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:22:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:22:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239006306] [2023-08-29 21:22:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239006306] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:22:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42119011] [2023-08-29 21:22:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:22:24,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:22:24,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:22:24,113 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:22:24,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 21:22:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:22:24,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 278 conjunts are in the unsatisfiable core [2023-08-29 21:22:24,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:22:24,601 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:22:24,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:22:24,668 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-08-29 21:22:24,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-08-29 21:22:24,698 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-08-29 21:22:24,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-08-29 21:22:24,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-29 21:22:24,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-08-29 21:22:24,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-29 21:22:24,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-29 21:22:24,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-08-29 21:22:24,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-29 21:22:24,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:24,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 15 [2023-08-29 21:22:24,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-08-29 21:22:25,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:25,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:25,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2023-08-29 21:22:25,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,081 INFO L321 Elim1Store]: treesize reduction 31, result has 36.7 percent of original size [2023-08-29 21:22:25,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 92 [2023-08-29 21:22:25,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,109 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2023-08-29 21:22:25,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 66 [2023-08-29 21:22:25,125 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:22:25,147 INFO L321 Elim1Store]: treesize reduction 47, result has 27.7 percent of original size [2023-08-29 21:22:25,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 79 [2023-08-29 21:22:25,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:22:25,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-29 21:22:25,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2023-08-29 21:22:25,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:25,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2023-08-29 21:22:25,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-08-29 21:22:25,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2023-08-29 21:22:25,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:22:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-29 21:22:25,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:22:25,469 INFO L321 Elim1Store]: treesize reduction 73, result has 29.8 percent of original size [2023-08-29 21:22:25,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 48 [2023-08-29 21:22:25,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:25,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:25,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 66 [2023-08-29 21:22:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2023-08-29 21:22:25,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 21:22:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2023-08-29 21:22:25,800 INFO L321 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-08-29 21:22:25,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 36 [2023-08-29 21:22:25,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:25,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:22:26,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:26,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:26,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:26,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:26,099 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-08-29 21:22:26,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 69 [2023-08-29 21:22:26,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:26,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:26,163 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-08-29 21:22:26,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 89 [2023-08-29 21:22:26,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:26,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:22:26,242 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-08-29 21:22:26,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-08-29 21:22:26,277 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:22:26,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:22:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:26,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-08-29 21:22:26,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:26,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:26,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:26,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:26,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:26,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:27,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:27,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:22:27,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:27,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:27,529 INFO L321 Elim1Store]: treesize reduction 40, result has 60.4 percent of original size [2023-08-29 21:22:27,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 86 treesize of output 129 [2023-08-29 21:22:27,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:27,642 INFO L321 Elim1Store]: treesize reduction 40, result has 60.4 percent of original size [2023-08-29 21:22:27,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 60 treesize of output 109 [2023-08-29 21:22:27,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:27,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:22:27,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:22:27,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-08-29 21:22:27,789 INFO L321 Elim1Store]: treesize reduction 28, result has 58.2 percent of original size [2023-08-29 21:22:27,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2023-08-29 21:22:27,826 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:22:27,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:22:27,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:27,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:27,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:27,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:28,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:28,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:28,300 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:22:28,314 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:22:28,352 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:22:28,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-08-29 21:22:28,372 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:22:28,561 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:22:28,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-08-29 21:22:28,703 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:22:28,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-08-29 21:22:28,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:28,841 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:22:28,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-08-29 21:22:28,896 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:22:29,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:22:29,128 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:22:29,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-08-29 21:22:29,220 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:22:29,400 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:22:29,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-08-29 21:24:18,043 WARN L222 SmtUtils]: Spent 49.28s on a formula simplification. DAG size of input: 789 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 21:24:18,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:24:18,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:24:18,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:24:18,243 INFO L321 Elim1Store]: treesize reduction 40, result has 57.0 percent of original size [2023-08-29 21:24:18,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 121 [2023-08-29 21:24:18,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:24:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:24:18,332 INFO L321 Elim1Store]: treesize reduction 40, result has 57.0 percent of original size [2023-08-29 21:24:18,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 108 [2023-08-29 21:24:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:24:18,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-08-29 21:24:18,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:24:18,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:24:18,423 INFO L321 Elim1Store]: treesize reduction 28, result has 58.2 percent of original size [2023-08-29 21:24:18,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2023-08-29 21:24:18,460 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:24:18,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:24:18,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:18,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:18,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:18,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:18,701 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:24:18,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-08-29 21:24:18,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:18,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:18,879 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:24:18,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-08-29 21:24:18,930 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-08-29 21:24:18,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 10 [2023-08-29 21:24:19,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:24:19,126 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:24:19,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-08-29 21:24:19,190 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-29 21:24:19,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-08-29 21:24:19,206 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:25:18,173 WARN L222 SmtUtils]: Spent 33.81s on a formula simplification. DAG size of input: 522 DAG size of output: 113 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 21:25:18,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-08-29 21:25:18,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:25:18,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:25:18,861 INFO L321 Elim1Store]: treesize reduction 196, result has 61.2 percent of original size [2023-08-29 21:25:18,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 280 treesize of output 565 [2023-08-29 21:25:18,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:25:18,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:25:19,160 INFO L321 Elim1Store]: treesize reduction 140, result has 56.4 percent of original size [2023-08-29 21:25:19,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 262 treesize of output 417 [2023-08-29 21:25:19,280 INFO L321 Elim1Store]: treesize reduction 34, result has 63.8 percent of original size [2023-08-29 21:25:19,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 228 treesize of output 278 [2023-08-29 21:25:19,358 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 21:25:19,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 21:25:22,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:25:23,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:25:23,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-08-29 21:25:34,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:25:34,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:25:42,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:12,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:13,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:13,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:21,331 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:26:29,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:29,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:31,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:26:31,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:27:44,934 WARN L222 SmtUtils]: Spent 22.83s on a formula simplification. DAG size of input: 969 DAG size of output: 1508 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-29 21:30:28,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:29,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:29,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:31,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:31,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:32,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:37,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:37,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:38,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:38,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:39,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:40,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:40,942 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:30:41,227 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:30:41,716 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:30:42,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:42,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:43,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:44,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:44,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:45,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:45,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:46,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:47,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:49,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:50,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:50,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:30:59,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:01,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:02,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:02,605 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:02,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:03,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:03,523 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:10,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:10,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:11,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:11,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:11,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:11,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:11,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:12,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:12,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:14,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:14,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:17,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:18,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:18,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:18,385 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:25,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:25,293 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:27,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:28,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:28,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:28,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:28,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:31,488 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:44,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:45,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:45,090 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:45,413 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:45,923 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:46,157 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:46,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:46,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:47,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:48,178 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:48,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:49,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:49,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:50,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:51,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:51,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:51,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:51,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:54,099 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:31:54,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:54,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:56,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:56,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:31:57,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:01,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:02,477 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:32:02,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:02,736 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:32:02,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:03,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:04,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:19,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:20,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:21,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:21,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:22,463 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:32:22,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:22,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:55,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:58,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:58,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:32:59,911 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:33:00,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:00,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:02,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:07,208 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:33:07,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:09,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:10,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:10,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:13,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:14,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:14,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:16,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:16,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:18,294 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-29 21:33:18,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:18,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:20,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:20,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-29 21:33:25,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 Killed by 15