./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e1ff0e6 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 ../sv-benchmarks/c/forester-heap/sll-token-2.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 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 01:29:34,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 01:29:34,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 01:29:34,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 01:29:34,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 01:29:34,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 01:29:34,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 01:29:34,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 01:29:34,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 01:29:34,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 01:29:34,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 01:29:34,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 01:29:34,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 01:29:34,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 01:29:34,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 01:29:34,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 01:29:34,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 01:29:34,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 01:29:34,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 01:29:34,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 01:29:34,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 01:29:34,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 01:29:34,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 01:29:34,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 01:29:34,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 01:29:34,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 01:29:34,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 01:29:34,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 01:29:34,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 01:29:34,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 01:29:34,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 01:29:34,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 01:29:34,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 01:29:34,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 01:29:34,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 01:29:34,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 01:29:34,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 01:29:34,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 01:29:34,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 01:29:34,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 01:29:34,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 01:29:34,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 01:29:34,714 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 01:29:34,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 01:29:34,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 01:29:34,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 01:29:34,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 01:29:34,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 01:29:34,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 01:29:34,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 01:29:34,716 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 01:29:34,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 01:29:34,716 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 01:29:34,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 01:29:34,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 01:29:34,717 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 01:29:34,718 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 01:29:34,718 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 01:29:34,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 01:29:34,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 01:29:34,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 01:29:34,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:29:34,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 01:29:34,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 01:29:34,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 01:29:34,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 01:29:34,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 01:29:34,719 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 01:29:34,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 01:29:34,720 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 01:29:34,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b [2023-02-15 01:29:34,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 01:29:34,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 01:29:34,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 01:29:34,869 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 01:29:34,870 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 01:29:34,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-2.i [2023-02-15 01:29:35,972 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 01:29:36,151 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 01:29:36,151 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i [2023-02-15 01:29:36,159 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574b111e3/a5bd042dcf6c41a29b94856397a225e0/FLAG03ef3665e [2023-02-15 01:29:36,170 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574b111e3/a5bd042dcf6c41a29b94856397a225e0 [2023-02-15 01:29:36,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 01:29:36,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 01:29:36,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 01:29:36,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 01:29:36,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 01:29:36,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57852707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36, skipping insertion in model container [2023-02-15 01:29:36,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 01:29:36,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 01:29:36,517 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2023-02-15 01:29:36,527 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2023-02-15 01:29:36,531 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2023-02-15 01:29:36,534 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2023-02-15 01:29:36,535 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2023-02-15 01:29:36,539 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2023-02-15 01:29:36,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:29:36,550 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 01:29:36,569 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2023-02-15 01:29:36,570 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2023-02-15 01:29:36,571 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2023-02-15 01:29:36,571 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2023-02-15 01:29:36,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2023-02-15 01:29:36,573 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2023-02-15 01:29:36,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:29:36,590 INFO L208 MainTranslator]: Completed translation [2023-02-15 01:29:36,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36 WrapperNode [2023-02-15 01:29:36,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 01:29:36,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 01:29:36,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 01:29:36,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 01:29:36,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,617 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 132 [2023-02-15 01:29:36,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 01:29:36,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 01:29:36,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 01:29:36,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 01:29:36,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 01:29:36,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 01:29:36,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 01:29:36,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 01:29:36,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (1/1) ... [2023-02-15 01:29:36,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:29:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:29:36,677 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) [2023-02-15 01:29:36,679 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 [2023-02-15 01:29:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 01:29:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 01:29:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 01:29:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 01:29:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 01:29:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 01:29:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 01:29:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 01:29:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 01:29:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 01:29:36,775 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 01:29:36,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 01:29:37,043 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 01:29:37,048 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 01:29:37,048 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2023-02-15 01:29:37,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:29:37 BoogieIcfgContainer [2023-02-15 01:29:37,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 01:29:37,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 01:29:37,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 01:29:37,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 01:29:37,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:29:36" (1/3) ... [2023-02-15 01:29:37,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6129602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:29:37, skipping insertion in model container [2023-02-15 01:29:37,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:29:36" (2/3) ... [2023-02-15 01:29:37,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6129602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:29:37, skipping insertion in model container [2023-02-15 01:29:37,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:29:37" (3/3) ... [2023-02-15 01:29:37,055 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2023-02-15 01:29:37,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 01:29:37,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-02-15 01:29:37,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 01:29:37,114 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;@23fc4a81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 01:29:37,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-02-15 01:29:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 64 states have (on average 2.21875) internal successors, (142), 118 states have internal predecessors, (142), 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) [2023-02-15 01:29:37,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 01:29:37,126 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:37,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 01:29:37,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:37,137 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-15 01:29:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:37,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595126474] [2023-02-15 01:29:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595126474] [2023-02-15 01:29:37,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595126474] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:37,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:37,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 01:29:37,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183698588] [2023-02-15 01:29:37,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:37,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 01:29:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 01:29:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:29:37,386 INFO L87 Difference]: Start difference. First operand has 119 states, 64 states have (on average 2.21875) internal successors, (142), 118 states have internal predecessors, (142), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-02-15 01:29:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:37,512 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2023-02-15 01:29:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 01:29:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2023-02-15 01:29:37,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:37,521 INFO L225 Difference]: With dead ends: 137 [2023-02-15 01:29:37,521 INFO L226 Difference]: Without dead ends: 135 [2023-02-15 01:29:37,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:29:37,524 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 94 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:37,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 97 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-15 01:29:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2023-02-15 01:29:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 114 states have internal predecessors, (117), 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) [2023-02-15 01:29:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2023-02-15 01:29:37,548 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 3 [2023-02-15 01:29:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:37,548 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2023-02-15 01:29:37,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-02-15 01:29:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2023-02-15 01:29:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 01:29:37,549 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:37,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 01:29:37,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 01:29:37,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-15 01:29:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:37,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108685010] [2023-02-15 01:29:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:37,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108685010] [2023-02-15 01:29:37,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108685010] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:37,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:37,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 01:29:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708722494] [2023-02-15 01:29:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:37,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 01:29:37,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 01:29:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:29:37,601 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-02-15 01:29:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:37,655 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2023-02-15 01:29:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 01:29:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2023-02-15 01:29:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:37,657 INFO L225 Difference]: With dead ends: 141 [2023-02-15 01:29:37,657 INFO L226 Difference]: Without dead ends: 141 [2023-02-15 01:29:37,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:29:37,658 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:37,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 99 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 01:29:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-15 01:29:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2023-02-15 01:29:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 112 states have internal predecessors, (115), 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) [2023-02-15 01:29:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2023-02-15 01:29:37,664 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 3 [2023-02-15 01:29:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:37,664 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2023-02-15 01:29:37,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-02-15 01:29:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2023-02-15 01:29:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 01:29:37,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:37,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:37,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 01:29:37,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash 59263631, now seen corresponding path program 1 times [2023-02-15 01:29:37,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:37,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341948921] [2023-02-15 01:29:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:37,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341948921] [2023-02-15 01:29:37,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341948921] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:37,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:37,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 01:29:37,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977952291] [2023-02-15 01:29:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:37,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 01:29:37,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 01:29:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:29:37,714 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-15 01:29:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:37,803 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2023-02-15 01:29:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 01:29:37,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2023-02-15 01:29:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:37,804 INFO L225 Difference]: With dead ends: 119 [2023-02-15 01:29:37,804 INFO L226 Difference]: Without dead ends: 119 [2023-02-15 01:29:37,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:37,805 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 168 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:37,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 68 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-15 01:29:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 102. [2023-02-15 01:29:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 101 states have internal predecessors, (106), 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) [2023-02-15 01:29:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2023-02-15 01:29:37,810 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 8 [2023-02-15 01:29:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:37,811 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2023-02-15 01:29:37,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-15 01:29:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2023-02-15 01:29:37,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 01:29:37,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:37,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:37,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 01:29:37,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash 59263632, now seen corresponding path program 1 times [2023-02-15 01:29:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:37,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390285854] [2023-02-15 01:29:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:37,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:37,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390285854] [2023-02-15 01:29:37,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390285854] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:37,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:37,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 01:29:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637643029] [2023-02-15 01:29:37,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 01:29:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 01:29:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:29:37,919 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-15 01:29:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:38,055 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2023-02-15 01:29:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 01:29:38,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2023-02-15 01:29:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:38,056 INFO L225 Difference]: With dead ends: 184 [2023-02-15 01:29:38,056 INFO L226 Difference]: Without dead ends: 184 [2023-02-15 01:29:38,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:38,057 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 195 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:38,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 104 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-02-15 01:29:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 133. [2023-02-15 01:29:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 96 states have (on average 1.5) internal successors, (144), 132 states have internal predecessors, (144), 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) [2023-02-15 01:29:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2023-02-15 01:29:38,062 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 8 [2023-02-15 01:29:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:38,063 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2023-02-15 01:29:38,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-15 01:29:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2023-02-15 01:29:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 01:29:38,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:38,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:38,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 01:29:38,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2023-02-15 01:29:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:38,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454003218] [2023-02-15 01:29:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:38,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:38,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454003218] [2023-02-15 01:29:38,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454003218] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:38,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:38,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 01:29:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383834064] [2023-02-15 01:29:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:38,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 01:29:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 01:29:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 01:29:38,170 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-02-15 01:29:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:38,316 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2023-02-15 01:29:38,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 01:29:38,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) Word has length 12 [2023-02-15 01:29:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:38,318 INFO L225 Difference]: With dead ends: 132 [2023-02-15 01:29:38,318 INFO L226 Difference]: Without dead ends: 132 [2023-02-15 01:29:38,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 01:29:38,319 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 64 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:38,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 221 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-15 01:29:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-02-15 01:29:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 96 states have (on average 1.4895833333333333) internal successors, (143), 131 states have internal predecessors, (143), 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) [2023-02-15 01:29:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2023-02-15 01:29:38,323 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 12 [2023-02-15 01:29:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:38,323 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2023-02-15 01:29:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-02-15 01:29:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2023-02-15 01:29:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 01:29:38,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:38,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:38,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 01:29:38,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2023-02-15 01:29:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687389428] [2023-02-15 01:29:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:38,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:38,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687389428] [2023-02-15 01:29:38,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687389428] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:38,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:38,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 01:29:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885487544] [2023-02-15 01:29:38,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 01:29:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 01:29:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 01:29:38,506 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-02-15 01:29:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:38,705 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2023-02-15 01:29:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 01:29:38,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) Word has length 12 [2023-02-15 01:29:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:38,706 INFO L225 Difference]: With dead ends: 131 [2023-02-15 01:29:38,706 INFO L226 Difference]: Without dead ends: 131 [2023-02-15 01:29:38,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-15 01:29:38,707 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:38,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 302 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:38,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-15 01:29:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2023-02-15 01:29:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 115 states have internal predecessors, (126), 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) [2023-02-15 01:29:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2023-02-15 01:29:38,711 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2023-02-15 01:29:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:38,711 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2023-02-15 01:29:38,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-02-15 01:29:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2023-02-15 01:29:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 01:29:38,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:38,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 01:29:38,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash 763856048, now seen corresponding path program 1 times [2023-02-15 01:29:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:38,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000179528] [2023-02-15 01:29:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:38,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000179528] [2023-02-15 01:29:38,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000179528] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:38,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:38,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:29:38,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787213339] [2023-02-15 01:29:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:29:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:38,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:29:38,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:38,772 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-15 01:29:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:38,857 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2023-02-15 01:29:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 01:29:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2023-02-15 01:29:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:38,859 INFO L225 Difference]: With dead ends: 115 [2023-02-15 01:29:38,859 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 01:29:38,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 01:29:38,860 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 5 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:38,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 244 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 01:29:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-02-15 01:29:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.4534883720930232) internal successors, (125), 114 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:29:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2023-02-15 01:29:38,863 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 13 [2023-02-15 01:29:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:38,863 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2023-02-15 01:29:38,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-15 01:29:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2023-02-15 01:29:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 01:29:38,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:38,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:38,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 01:29:38,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash 763856049, now seen corresponding path program 1 times [2023-02-15 01:29:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:38,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502928068] [2023-02-15 01:29:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502928068] [2023-02-15 01:29:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502928068] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:38,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:38,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:29:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961759855] [2023-02-15 01:29:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:29:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:29:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:38,966 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-15 01:29:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:39,057 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2023-02-15 01:29:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 01:29:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2023-02-15 01:29:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:39,058 INFO L225 Difference]: With dead ends: 114 [2023-02-15 01:29:39,058 INFO L226 Difference]: Without dead ends: 114 [2023-02-15 01:29:39,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 01:29:39,059 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 3 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:39,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 246 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-02-15 01:29:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-02-15 01:29:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 86 states have (on average 1.441860465116279) internal successors, (124), 113 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:29:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2023-02-15 01:29:39,062 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 13 [2023-02-15 01:29:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:39,062 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2023-02-15 01:29:39,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-15 01:29:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2023-02-15 01:29:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 01:29:39,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:39,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:39,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 01:29:39,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:39,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2113337263, now seen corresponding path program 1 times [2023-02-15 01:29:39,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467240178] [2023-02-15 01:29:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:39,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:39,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467240178] [2023-02-15 01:29:39,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467240178] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:39,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:39,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 01:29:39,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928057946] [2023-02-15 01:29:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:39,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 01:29:39,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 01:29:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 01:29:39,123 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-02-15 01:29:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:39,238 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2023-02-15 01:29:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 01:29:39,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 14 [2023-02-15 01:29:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:39,239 INFO L225 Difference]: With dead ends: 125 [2023-02-15 01:29:39,239 INFO L226 Difference]: Without dead ends: 125 [2023-02-15 01:29:39,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-15 01:29:39,240 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 16 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:39,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 366 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-15 01:29:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2023-02-15 01:29:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:29:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2023-02-15 01:29:39,242 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 14 [2023-02-15 01:29:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:39,243 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2023-02-15 01:29:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-02-15 01:29:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2023-02-15 01:29:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 01:29:39,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:39,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:39,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 01:29:39,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:39,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1298827700, now seen corresponding path program 1 times [2023-02-15 01:29:39,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:39,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185046168] [2023-02-15 01:29:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:39,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:39,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:39,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185046168] [2023-02-15 01:29:39,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185046168] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:39,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:39,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:29:39,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335010961] [2023-02-15 01:29:39,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:39,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 01:29:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:39,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 01:29:39,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:29:39,274 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-15 01:29:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:39,341 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2023-02-15 01:29:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 01:29:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 16 [2023-02-15 01:29:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:39,342 INFO L225 Difference]: With dead ends: 168 [2023-02-15 01:29:39,342 INFO L226 Difference]: Without dead ends: 168 [2023-02-15 01:29:39,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:39,343 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 167 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:39,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 131 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-15 01:29:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 110. [2023-02-15 01:29:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4285714285714286) internal successors, (120), 109 states have internal predecessors, (120), 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) [2023-02-15 01:29:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2023-02-15 01:29:39,345 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 16 [2023-02-15 01:29:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:39,346 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2023-02-15 01:29:39,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-15 01:29:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2023-02-15 01:29:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 01:29:39,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:39,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:39,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 01:29:39,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1685750883, now seen corresponding path program 1 times [2023-02-15 01:29:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:39,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996705133] [2023-02-15 01:29:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:39,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996705133] [2023-02-15 01:29:39,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996705133] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:39,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:39,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 01:29:39,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525459956] [2023-02-15 01:29:39,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:39,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:29:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:39,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:29:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:39,392 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2023-02-15 01:29:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:39,466 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2023-02-15 01:29:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 01:29:39,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) Word has length 21 [2023-02-15 01:29:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:39,467 INFO L225 Difference]: With dead ends: 108 [2023-02-15 01:29:39,467 INFO L226 Difference]: Without dead ends: 108 [2023-02-15 01:29:39,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 01:29:39,468 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 9 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:39,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 218 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-15 01:29:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-02-15 01:29:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 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) [2023-02-15 01:29:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2023-02-15 01:29:39,470 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 21 [2023-02-15 01:29:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:39,470 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2023-02-15 01:29:39,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2023-02-15 01:29:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2023-02-15 01:29:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 01:29:39,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:39,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 01:29:39,472 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1685783654, now seen corresponding path program 1 times [2023-02-15 01:29:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882355747] [2023-02-15 01:29:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:40,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882355747] [2023-02-15 01:29:40,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882355747] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:40,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:40,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-15 01:29:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231834067] [2023-02-15 01:29:40,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:40,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 01:29:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 01:29:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-02-15 01:29:40,037 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) [2023-02-15 01:29:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:40,454 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2023-02-15 01:29:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 01:29:40,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) Word has length 21 [2023-02-15 01:29:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:40,455 INFO L225 Difference]: With dead ends: 215 [2023-02-15 01:29:40,455 INFO L226 Difference]: Without dead ends: 215 [2023-02-15 01:29:40,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-02-15 01:29:40,456 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 289 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:40,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 415 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:29:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-02-15 01:29:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 121. [2023-02-15 01:29:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:29:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2023-02-15 01:29:40,458 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 21 [2023-02-15 01:29:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:40,458 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2023-02-15 01:29:40,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) [2023-02-15 01:29:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2023-02-15 01:29:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 01:29:40,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:40,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:40,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 01:29:40,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash -843990961, now seen corresponding path program 1 times [2023-02-15 01:29:40,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:40,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180240114] [2023-02-15 01:29:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:40,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:40,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:40,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180240114] [2023-02-15 01:29:40,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180240114] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:40,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:40,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 01:29:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423849594] [2023-02-15 01:29:40,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:40,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 01:29:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:40,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 01:29:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-15 01:29:40,708 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-02-15 01:29:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:40,980 INFO L93 Difference]: Finished difference Result 172 states and 177 transitions. [2023-02-15 01:29:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 01:29:40,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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) Word has length 24 [2023-02-15 01:29:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:40,981 INFO L225 Difference]: With dead ends: 172 [2023-02-15 01:29:40,981 INFO L226 Difference]: Without dead ends: 172 [2023-02-15 01:29:40,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-02-15 01:29:40,982 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 222 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:40,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 266 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:29:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-02-15 01:29:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 127. [2023-02-15 01:29:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 126 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:29:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2023-02-15 01:29:40,984 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 24 [2023-02-15 01:29:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:40,984 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2023-02-15 01:29:40,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-02-15 01:29:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2023-02-15 01:29:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 01:29:40,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:40,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:40,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 01:29:40,985 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash -843990960, now seen corresponding path program 1 times [2023-02-15 01:29:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:40,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807804218] [2023-02-15 01:29:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:40,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:41,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807804218] [2023-02-15 01:29:41,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807804218] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:41,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:41,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 01:29:41,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301896306] [2023-02-15 01:29:41,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 01:29:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 01:29:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-15 01:29:41,237 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-02-15 01:29:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:41,570 INFO L93 Difference]: Finished difference Result 204 states and 208 transitions. [2023-02-15 01:29:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 01:29:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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) Word has length 24 [2023-02-15 01:29:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:41,571 INFO L225 Difference]: With dead ends: 204 [2023-02-15 01:29:41,571 INFO L226 Difference]: Without dead ends: 204 [2023-02-15 01:29:41,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-02-15 01:29:41,572 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 173 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:41,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 318 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:29:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-15 01:29:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2023-02-15 01:29:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 126 states have internal predecessors, (137), 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) [2023-02-15 01:29:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2023-02-15 01:29:41,574 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 24 [2023-02-15 01:29:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:41,574 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2023-02-15 01:29:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-02-15 01:29:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2023-02-15 01:29:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 01:29:41,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:41,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:41,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 01:29:41,575 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash 673509455, now seen corresponding path program 1 times [2023-02-15 01:29:41,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:41,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266980436] [2023-02-15 01:29:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:41,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266980436] [2023-02-15 01:29:41,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266980436] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:41,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:41,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-15 01:29:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488687972] [2023-02-15 01:29:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:41,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 01:29:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 01:29:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-15 01:29:41,935 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2023-02-15 01:29:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:42,364 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2023-02-15 01:29:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 01:29:42,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) Word has length 26 [2023-02-15 01:29:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:42,365 INFO L225 Difference]: With dead ends: 202 [2023-02-15 01:29:42,365 INFO L226 Difference]: Without dead ends: 202 [2023-02-15 01:29:42,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-02-15 01:29:42,365 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 300 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:42,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 397 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:29:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-02-15 01:29:42,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2023-02-15 01:29:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 127 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:29:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2023-02-15 01:29:42,368 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 26 [2023-02-15 01:29:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:42,368 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2023-02-15 01:29:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2023-02-15 01:29:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2023-02-15 01:29:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 01:29:42,369 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:42,369 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:42,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-15 01:29:42,369 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1451405621, now seen corresponding path program 1 times [2023-02-15 01:29:42,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:42,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767203035] [2023-02-15 01:29:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:42,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767203035] [2023-02-15 01:29:42,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767203035] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:29:42,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371305082] [2023-02-15 01:29:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:42,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:29:42,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:29:42,943 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) [2023-02-15 01:29:42,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 01:29:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:43,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-15 01:29:43,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:29:43,067 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 [2023-02-15 01:29:43,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 01:29:43,112 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:29:43,112 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 [2023-02-15 01:29:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:29:43,127 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 21 treesize of output 20 [2023-02-15 01:29:43,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:29:43,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 8 [2023-02-15 01:29:43,183 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 16 treesize of output 18 [2023-02-15 01:29:43,223 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 16 treesize of output 18 [2023-02-15 01:29:43,241 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:29:43,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2023-02-15 01:29:43,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:29:43,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2023-02-15 01:29:43,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 8 [2023-02-15 01:29:43,319 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 16 treesize of output 18 [2023-02-15 01:29:43,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-15 01:29:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:43,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:29:43,374 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2023-02-15 01:29:43,383 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2023-02-15 01:29:45,687 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 01:29:45,705 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 13 treesize of output 12 [2023-02-15 01:29:45,812 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 Int) (|v_ULTIMATE.start_main_#t~malloc3#1.base_6| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_51| Int) (v_ArrVal_471 (Array Int Int)) (v_ArrVal_473 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc5#1.base_6| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc5#1.base_6| |c_ULTIMATE.start_main_~head~0#1.base|) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_51| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_6|) 0)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_51| v_ArrVal_464)) |v_ULTIMATE.start_main_#t~malloc3#1.base_6| v_ArrVal_471) |v_ULTIMATE.start_main_#t~malloc5#1.base_6| v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0))) is different from false [2023-02-15 01:29:45,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:29:45,824 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:45,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2023-02-15 01:29:45,829 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:29:45,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 24 [2023-02-15 01:29:45,842 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 [2023-02-15 01:29:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371305082] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:29:45,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:29:45,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2023-02-15 01:29:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337052850] [2023-02-15 01:29:45,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:29:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-15 01:29:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-15 01:29:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=526, Unknown=17, NotChecked=150, Total=812 [2023-02-15 01:29:45,863 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 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) [2023-02-15 01:29:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:46,815 INFO L93 Difference]: Finished difference Result 255 states and 265 transitions. [2023-02-15 01:29:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 01:29:46,816 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 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) Word has length 30 [2023-02-15 01:29:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:46,817 INFO L225 Difference]: With dead ends: 255 [2023-02-15 01:29:46,817 INFO L226 Difference]: Without dead ends: 255 [2023-02-15 01:29:46,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=337, Invalid=1297, Unknown=18, NotChecked=240, Total=1892 [2023-02-15 01:29:46,818 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 370 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 44 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 534 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:46,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 873 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1182 Invalid, 6 Unknown, 534 Unchecked, 0.6s Time] [2023-02-15 01:29:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-02-15 01:29:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 150. [2023-02-15 01:29:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 125 states have (on average 1.296) internal successors, (162), 149 states have internal predecessors, (162), 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) [2023-02-15 01:29:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2023-02-15 01:29:46,820 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 30 [2023-02-15 01:29:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:46,820 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2023-02-15 01:29:46,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 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) [2023-02-15 01:29:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2023-02-15 01:29:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 01:29:46,821 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:46,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:46,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 01:29:47,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 01:29:47,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash -472325846, now seen corresponding path program 1 times [2023-02-15 01:29:47,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:47,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237948914] [2023-02-15 01:29:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:47,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237948914] [2023-02-15 01:29:47,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237948914] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:47,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:47,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 01:29:47,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632055303] [2023-02-15 01:29:47,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:29:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:29:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:47,106 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-02-15 01:29:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:47,173 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2023-02-15 01:29:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 01:29:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) Word has length 32 [2023-02-15 01:29:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:47,174 INFO L225 Difference]: With dead ends: 148 [2023-02-15 01:29:47,174 INFO L226 Difference]: Without dead ends: 148 [2023-02-15 01:29:47,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 01:29:47,175 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 22 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:47,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 193 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-15 01:29:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-02-15 01:29:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 124 states have (on average 1.282258064516129) internal successors, (159), 147 states have internal predecessors, (159), 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) [2023-02-15 01:29:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2023-02-15 01:29:47,177 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 32 [2023-02-15 01:29:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:47,177 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2023-02-15 01:29:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-02-15 01:29:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2023-02-15 01:29:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 01:29:47,177 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:47,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:47,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 01:29:47,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1755815806, now seen corresponding path program 1 times [2023-02-15 01:29:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:47,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118408378] [2023-02-15 01:29:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:47,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:47,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118408378] [2023-02-15 01:29:47,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118408378] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:29:47,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:29:47,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 01:29:47,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173953405] [2023-02-15 01:29:47,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:29:47,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 01:29:47,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:47,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 01:29:47,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:29:47,281 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-02-15 01:29:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:47,350 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2023-02-15 01:29:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 01:29:47,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) Word has length 33 [2023-02-15 01:29:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:47,351 INFO L225 Difference]: With dead ends: 157 [2023-02-15 01:29:47,351 INFO L226 Difference]: Without dead ends: 157 [2023-02-15 01:29:47,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:29:47,352 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 122 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:47,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 90 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:29:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-15 01:29:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2023-02-15 01:29:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 149 states have internal predecessors, (161), 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) [2023-02-15 01:29:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2023-02-15 01:29:47,354 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 33 [2023-02-15 01:29:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:47,354 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2023-02-15 01:29:47,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-02-15 01:29:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2023-02-15 01:29:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 01:29:47,354 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:47,354 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:47,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-15 01:29:47,354 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash 416851232, now seen corresponding path program 1 times [2023-02-15 01:29:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:47,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708672962] [2023-02-15 01:29:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:47,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:47,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:47,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708672962] [2023-02-15 01:29:47,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708672962] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:29:47,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913333843] [2023-02-15 01:29:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:47,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:29:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:29:47,773 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) [2023-02-15 01:29:47,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 01:29:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:47,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-15 01:29:47,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:29:47,879 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 [2023-02-15 01:29:47,937 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:29:47,938 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 [2023-02-15 01:29:47,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:29:48,092 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:29:48,092 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 1 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 01:29:48,130 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:29:48,133 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 1 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 01:29:48,148 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:29:48,149 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 [2023-02-15 01:29:48,185 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 01:29:48,186 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 1 case distinctions, treesize of input 27 treesize of output 22 [2023-02-15 01:29:48,283 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-15 01:29:48,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-02-15 01:29:48,297 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 16 treesize of output 12 [2023-02-15 01:29:48,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:29:48,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:48,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 16 [2023-02-15 01:29:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:48,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:29:50,557 INFO L321 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2023-02-15 01:29:50,558 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 27 treesize of output 26 [2023-02-15 01:29:50,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:50,659 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 1 case distinctions, treesize of input 16 treesize of output 20 [2023-02-15 01:29:50,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:50,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:29:50,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:50,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 68 treesize of output 71 [2023-02-15 01:29:50,863 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 56 treesize of output 52 [2023-02-15 01:29:50,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:50,869 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 60 treesize of output 56 [2023-02-15 01:29:50,876 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 01:29:50,876 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 13 treesize of output 12 [2023-02-15 01:29:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:51,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913333843] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:29:51,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:29:51,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 37 [2023-02-15 01:29:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568908496] [2023-02-15 01:29:51,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:29:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 01:29:51,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:29:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 01:29:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1262, Unknown=12, NotChecked=0, Total=1406 [2023-02-15 01:29:51,133 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 38 states have internal predecessors, (93), 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) [2023-02-15 01:29:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:29:56,413 INFO L93 Difference]: Finished difference Result 233 states and 243 transitions. [2023-02-15 01:29:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 01:29:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 38 states have internal predecessors, (93), 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) Word has length 33 [2023-02-15 01:29:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:29:56,415 INFO L225 Difference]: With dead ends: 233 [2023-02-15 01:29:56,415 INFO L226 Difference]: Without dead ends: 233 [2023-02-15 01:29:56,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=392, Invalid=2352, Unknown=12, NotChecked=0, Total=2756 [2023-02-15 01:29:56,416 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 446 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 01:29:56,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1124 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 01:29:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-15 01:29:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 156. [2023-02-15 01:29:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 132 states have (on average 1.2727272727272727) internal successors, (168), 155 states have internal predecessors, (168), 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) [2023-02-15 01:29:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2023-02-15 01:29:56,418 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 33 [2023-02-15 01:29:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:29:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2023-02-15 01:29:56,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 38 states have internal predecessors, (93), 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) [2023-02-15 01:29:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2023-02-15 01:29:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 01:29:56,419 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:29:56,419 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:29:56,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 01:29:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:29:56,624 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:29:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:29:56,625 INFO L85 PathProgramCache]: Analyzing trace with hash 416851233, now seen corresponding path program 1 times [2023-02-15 01:29:56,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:29:56,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267899265] [2023-02-15 01:29:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:29:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:57,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:29:57,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267899265] [2023-02-15 01:29:57,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267899265] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:29:57,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569101532] [2023-02-15 01:29:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:29:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:29:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:29:57,159 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) [2023-02-15 01:29:57,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 01:29:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:29:57,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-15 01:29:57,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:29:57,275 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 [2023-02-15 01:29:57,355 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 01:29:57,356 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 [2023-02-15 01:29:57,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 01:29:57,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:29:57,523 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:29:57,524 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:29:57,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:29:57,536 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 14 treesize of output 16 [2023-02-15 01:29:57,622 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:29:57,622 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:29:57,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:29:57,637 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 14 treesize of output 16 [2023-02-15 01:29:57,655 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-15 01:29:57,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-15 01:29:57,664 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 14 treesize of output 16 [2023-02-15 01:29:57,709 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 01:29:57,709 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 1 case distinctions, treesize of input 35 treesize of output 26 [2023-02-15 01:29:57,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 16 [2023-02-15 01:29:57,834 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-15 01:29:57,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2023-02-15 01:29:57,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 24 [2023-02-15 01:29:58,043 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:29:58,047 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 01:29:58,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 55 treesize of output 26 [2023-02-15 01:29:58,052 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:29:58,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 01:29:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:29:58,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:29:58,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:58,691 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 1 case distinctions, treesize of input 33 treesize of output 37 [2023-02-15 01:29:59,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:59,140 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 142 treesize of output 146 [2023-02-15 01:29:59,230 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 26 treesize of output 22 [2023-02-15 01:29:59,766 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc5#1.base_12| Int)) (or (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_prenex_1) |v_ULTIMATE.start_main_#t~malloc5#1.base_12| v_prenex_2) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_3) 4)) (not (<= 0 v_prenex_3)) (not (<= v_prenex_3 |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc5#1.base_12|) 0)))) (forall ((v_subst_2 Int)) (or (forall ((v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_4 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_61| Int)) (let ((.cse1 (select v_arrayElimArr_4 v_subst_2))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_61| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= (select |c_#valid| .cse1) 0)) (= (select (select (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_4) .cse1 v_ArrVal_756) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_61|) .cse0) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_61|))))) (not (<= 0 v_subst_2)))) (forall ((v_subst_1 Int)) (or (not (<= 0 v_subst_1)) (forall ((v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_4 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_61| Int)) (let ((.cse2 (select v_arrayElimArr_4 v_subst_1))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_61| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_4) .cse2 v_ArrVal_756) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_61|) .cse2)) (not (= (select |c_#valid| .cse2) 0)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_61|))))))) (forall ((v_ArrVal_754 (Array Int Int)) (v_ArrVal_757 (Array Int Int)) (v_arrayElimCell_58 Int) (|v_ULTIMATE.start_main_~x~0#1.offset_61| Int)) (or (not (= (select |c_#valid| v_arrayElimCell_58) 0)) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_61| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_61|)) (< (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_754) v_arrayElimCell_58 v_ArrVal_757) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_61|) 1))))) is different from false [2023-02-15 01:29:59,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:59,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:29:59,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:59,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 138 treesize of output 137 [2023-02-15 01:29:59,849 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 122 treesize of output 118 [2023-02-15 01:29:59,853 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 118 treesize of output 110 [2023-02-15 01:29:59,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:59,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:29:59,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:29:59,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 68 treesize of output 71 [2023-02-15 01:30:00,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:00,014 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 64 treesize of output 60 [2023-02-15 01:30:00,030 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 46 treesize of output 42 [2023-02-15 01:30:00,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:00,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 26 treesize of output 27 [2023-02-15 01:30:00,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:00,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 84 [2023-02-15 01:30:00,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:00,154 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 77 treesize of output 65 [2023-02-15 01:30:00,160 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 [2023-02-15 01:30:00,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:00,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 21 treesize of output 22 [2023-02-15 01:30:00,270 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:00,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:00,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 33 [2023-02-15 01:30:00,282 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 9 treesize of output 7 [2023-02-15 01:30:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:00,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569101532] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:00,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:00,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 16] total 41 [2023-02-15 01:30:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893789545] [2023-02-15 01:30:00,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:00,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 01:30:00,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:00,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 01:30:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1483, Unknown=14, NotChecked=78, Total=1722 [2023-02-15 01:30:00,722 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:30:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:08,464 INFO L93 Difference]: Finished difference Result 246 states and 254 transitions. [2023-02-15 01:30:08,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 01:30:08,464 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-15 01:30:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:08,465 INFO L225 Difference]: With dead ends: 246 [2023-02-15 01:30:08,465 INFO L226 Difference]: Without dead ends: 246 [2023-02-15 01:30:08,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=742, Invalid=5093, Unknown=21, NotChecked=150, Total=6006 [2023-02-15 01:30:08,467 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 678 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 125 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:08,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1252 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2283 Invalid, 2 Unknown, 176 Unchecked, 1.9s Time] [2023-02-15 01:30:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-15 01:30:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 153. [2023-02-15 01:30:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 152 states have internal predecessors, (164), 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) [2023-02-15 01:30:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2023-02-15 01:30:08,469 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 33 [2023-02-15 01:30:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:08,469 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2023-02-15 01:30:08,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:30:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2023-02-15 01:30:08,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 01:30:08,470 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:08,470 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:08,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 01:30:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:08,671 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1393105246, now seen corresponding path program 1 times [2023-02-15 01:30:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982243395] [2023-02-15 01:30:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:08,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:09,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982243395] [2023-02-15 01:30:09,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982243395] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52038082] [2023-02-15 01:30:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:09,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:09,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:09,025 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) [2023-02-15 01:30:09,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 01:30:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:09,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-15 01:30:09,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:09,125 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 [2023-02-15 01:30:09,190 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:30:09,190 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 [2023-02-15 01:30:09,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:09,307 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:09,307 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 1 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 01:30:09,343 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:09,343 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 1 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 01:30:09,357 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:30:09,358 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 [2023-02-15 01:30:09,422 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 01:30:09,422 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 1 case distinctions, treesize of input 27 treesize of output 22 [2023-02-15 01:30:09,509 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-15 01:30:09,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-02-15 01:30:09,514 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 16 treesize of output 12 [2023-02-15 01:30:09,591 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:09,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:09,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 16 [2023-02-15 01:30:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:09,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:11,798 INFO L321 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2023-02-15 01:30:11,798 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 27 treesize of output 26 [2023-02-15 01:30:11,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:11,910 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 1 case distinctions, treesize of input 16 treesize of output 20 [2023-02-15 01:30:12,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:12,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:30:12,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:12,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 68 treesize of output 71 [2023-02-15 01:30:12,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:12,160 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 64 treesize of output 60 [2023-02-15 01:30:12,164 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 46 treesize of output 42 [2023-02-15 01:30:12,174 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 01:30:12,174 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 13 treesize of output 12 [2023-02-15 01:30:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:12,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52038082] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:12,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:12,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 39 [2023-02-15 01:30:12,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403829668] [2023-02-15 01:30:12,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-15 01:30:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-15 01:30:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1411, Unknown=11, NotChecked=0, Total=1560 [2023-02-15 01:30:12,437 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 40 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 40 states have internal predecessors, (93), 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) [2023-02-15 01:30:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:16,085 INFO L93 Difference]: Finished difference Result 228 states and 238 transitions. [2023-02-15 01:30:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 01:30:16,085 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 40 states have internal predecessors, (93), 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) Word has length 33 [2023-02-15 01:30:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:16,086 INFO L225 Difference]: With dead ends: 228 [2023-02-15 01:30:16,086 INFO L226 Difference]: Without dead ends: 228 [2023-02-15 01:30:16,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=448, Invalid=2847, Unknown=11, NotChecked=0, Total=3306 [2023-02-15 01:30:16,088 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 931 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:16,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1133 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 01:30:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-15 01:30:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 157. [2023-02-15 01:30:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 156 states have internal predecessors, (169), 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) [2023-02-15 01:30:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2023-02-15 01:30:16,091 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 33 [2023-02-15 01:30:16,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:16,092 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2023-02-15 01:30:16,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 40 states have internal predecessors, (93), 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) [2023-02-15 01:30:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2023-02-15 01:30:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 01:30:16,092 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:16,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:16,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 01:30:16,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:16,299 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:16,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1393105247, now seen corresponding path program 1 times [2023-02-15 01:30:16,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:16,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233701799] [2023-02-15 01:30:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:16,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233701799] [2023-02-15 01:30:16,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233701799] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:16,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51366985] [2023-02-15 01:30:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:16,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:16,915 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) [2023-02-15 01:30:16,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 01:30:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:17,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-15 01:30:17,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:17,024 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 01:30:17,122 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 01:30:17,122 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 [2023-02-15 01:30:17,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 01:30:17,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:17,296 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:17,296 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:30:17,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:30:17,305 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 14 treesize of output 16 [2023-02-15 01:30:17,408 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:17,408 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:30:17,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:30:17,422 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 14 treesize of output 16 [2023-02-15 01:30:17,458 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 01:30:17,458 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 14 treesize of output 20 [2023-02-15 01:30:17,478 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-15 01:30:17,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-15 01:30:17,543 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 01:30:17,544 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 1 case distinctions, treesize of input 35 treesize of output 26 [2023-02-15 01:30:17,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:30:17,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 16 [2023-02-15 01:30:17,689 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-15 01:30:17,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2023-02-15 01:30:17,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 24 [2023-02-15 01:30:17,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:17,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 01:30:17,872 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:17,878 INFO L321 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2023-02-15 01:30:17,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 29 [2023-02-15 01:30:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:17,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:18,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:18,587 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 1 case distinctions, treesize of input 33 treesize of output 37 [2023-02-15 01:30:18,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:18,858 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 142 treesize of output 146 [2023-02-15 01:30:18,911 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 26 treesize of output 22 [2023-02-15 01:30:19,058 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (forall ((|v_ULTIMATE.start_main_#t~malloc5#1.base_18| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_73| Int) (v_ArrVal_971 (Array Int Int)) (v_ArrVal_973 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_73| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_73|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc5#1.base_18|) 0)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_971) |v_ULTIMATE.start_main_#t~malloc5#1.base_18| v_ArrVal_973) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_73|) 4)))))) (and (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_arrayElimArr_11 (Array Int Int)) (v_prenex_4 Int) (v_ArrVal_972 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_11 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_11) .cse0 v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4))) (not (<= v_prenex_4 |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 v_prenex_4))))))) (forall ((v_prenex_4 Int) (v_prenex_5 (Array Int Int)) (v_prenex_6 (Array Int Int)) (v_arrayElimCell_118 Int)) (or (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_prenex_5) v_arrayElimCell_118 v_prenex_6) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4) 1) (not (<= v_prenex_4 |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 v_prenex_4)) (not (= 0 (select |c_#valid| v_arrayElimCell_118))))) .cse1 (or (forall ((v_arrayElimArr_11 (Array Int Int)) (|ULTIMATE.start_main_~x~0#1.offset| Int) (v_prenex_4 Int) (v_ArrVal_972 (Array Int Int))) (or (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_11) (select v_arrayElimArr_11 |ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4) |c_ULTIMATE.start_main_~x~0#1.base|))) .cse1) (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_arrayElimArr_11 (Array Int Int)) (v_prenex_4 Int) (v_ArrVal_972 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_11 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select |c_#valid| .cse2) 0)) (not (<= v_prenex_4 |c_ULTIMATE.start_main_~head~0#1.offset|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_11) .cse2 v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4) |c_ULTIMATE.start_main_~x~0#1.base|) (not (<= 0 v_prenex_4))))))))) is different from false [2023-02-15 01:30:19,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:19,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:30:19,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:19,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 68 treesize of output 71 [2023-02-15 01:30:19,721 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 56 treesize of output 52 [2023-02-15 01:30:19,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:19,731 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 60 treesize of output 56 [2023-02-15 01:30:19,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:19,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 26 treesize of output 27 [2023-02-15 01:30:19,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:19,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 84 [2023-02-15 01:30:19,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:19,966 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 77 treesize of output 65 [2023-02-15 01:30:19,978 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 [2023-02-15 01:30:20,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:20,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 21 treesize of output 22 [2023-02-15 01:30:20,097 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:20,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:20,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 33 [2023-02-15 01:30:20,111 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 9 treesize of output 7 [2023-02-15 01:30:20,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:20,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:30:20,167 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:20,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:20,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 37 [2023-02-15 01:30:20,187 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 11 treesize of output 9 [2023-02-15 01:30:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:20,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51366985] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:20,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:20,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 45 [2023-02-15 01:30:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595544808] [2023-02-15 01:30:20,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:20,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-15 01:30:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-15 01:30:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1812, Unknown=14, NotChecked=86, Total=2070 [2023-02-15 01:30:20,741 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 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) [2023-02-15 01:30:30,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:30,332 INFO L93 Difference]: Finished difference Result 255 states and 264 transitions. [2023-02-15 01:30:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-15 01:30:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 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) Word has length 33 [2023-02-15 01:30:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:30,335 INFO L225 Difference]: With dead ends: 255 [2023-02-15 01:30:30,335 INFO L226 Difference]: Without dead ends: 255 [2023-02-15 01:30:30,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=849, Invalid=6276, Unknown=19, NotChecked=166, Total=7310 [2023-02-15 01:30:30,336 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 855 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:30,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1386 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2513 Invalid, 0 Unknown, 180 Unchecked, 1.9s Time] [2023-02-15 01:30:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-02-15 01:30:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 156. [2023-02-15 01:30:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 135 states have (on average 1.237037037037037) internal successors, (167), 155 states have internal predecessors, (167), 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) [2023-02-15 01:30:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2023-02-15 01:30:30,338 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 33 [2023-02-15 01:30:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:30,338 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2023-02-15 01:30:30,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 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) [2023-02-15 01:30:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2023-02-15 01:30:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 01:30:30,339 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:30,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:30,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 01:30:30,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 01:30:30,540 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1361528144, now seen corresponding path program 1 times [2023-02-15 01:30:30,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:30,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986521043] [2023-02-15 01:30:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:30,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:30,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986521043] [2023-02-15 01:30:30,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986521043] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:30:30,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:30:30,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 01:30:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888661352] [2023-02-15 01:30:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:30:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 01:30:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 01:30:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 01:30:30,727 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 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) [2023-02-15 01:30:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:31,050 INFO L93 Difference]: Finished difference Result 224 states and 232 transitions. [2023-02-15 01:30:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 01:30:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 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) Word has length 34 [2023-02-15 01:30:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:31,051 INFO L225 Difference]: With dead ends: 224 [2023-02-15 01:30:31,051 INFO L226 Difference]: Without dead ends: 224 [2023-02-15 01:30:31,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-02-15 01:30:31,052 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 183 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:31,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 323 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:30:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-15 01:30:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 165. [2023-02-15 01:30:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 1.2291666666666667) internal successors, (177), 164 states have internal predecessors, (177), 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) [2023-02-15 01:30:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2023-02-15 01:30:31,058 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 34 [2023-02-15 01:30:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:31,058 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2023-02-15 01:30:31,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 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) [2023-02-15 01:30:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2023-02-15 01:30:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 01:30:31,058 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:31,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:31,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-15 01:30:31,059 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash -742300245, now seen corresponding path program 1 times [2023-02-15 01:30:31,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:31,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115056410] [2023-02-15 01:30:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:31,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115056410] [2023-02-15 01:30:31,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115056410] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:30:31,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:30:31,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 01:30:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626575106] [2023-02-15 01:30:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:30:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 01:30:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 01:30:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 01:30:31,233 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-02-15 01:30:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:31,524 INFO L93 Difference]: Finished difference Result 223 states and 231 transitions. [2023-02-15 01:30:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 01:30:31,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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) Word has length 35 [2023-02-15 01:30:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:31,525 INFO L225 Difference]: With dead ends: 223 [2023-02-15 01:30:31,525 INFO L226 Difference]: Without dead ends: 223 [2023-02-15 01:30:31,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-02-15 01:30:31,525 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 206 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:31,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 260 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:30:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-02-15 01:30:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 166. [2023-02-15 01:30:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 165 states have internal predecessors, (178), 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) [2023-02-15 01:30:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2023-02-15 01:30:31,528 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 35 [2023-02-15 01:30:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:31,528 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2023-02-15 01:30:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-02-15 01:30:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2023-02-15 01:30:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 01:30:31,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:31,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:31,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-15 01:30:31,528 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash 583164820, now seen corresponding path program 1 times [2023-02-15 01:30:31,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:31,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848884243] [2023-02-15 01:30:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:31,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848884243] [2023-02-15 01:30:31,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848884243] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260050336] [2023-02-15 01:30:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:31,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:31,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:31,676 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) [2023-02-15 01:30:31,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 01:30:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:31,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-15 01:30:31,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:31,992 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:31,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-15 01:30:31,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:31,997 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:31,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 19 [2023-02-15 01:30:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:32,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:32,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:32,063 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 34 treesize of output 38 [2023-02-15 01:30:32,121 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-02-15 01:30:32,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 36 [2023-02-15 01:30:32,129 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-02-15 01:30:32,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 14 [2023-02-15 01:30:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:32,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260050336] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:32,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:32,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-02-15 01:30:32,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732197151] [2023-02-15 01:30:32,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:32,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 01:30:32,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 01:30:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-02-15 01:30:32,219 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 states have internal predecessors, (87), 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) [2023-02-15 01:30:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:32,907 INFO L93 Difference]: Finished difference Result 240 states and 249 transitions. [2023-02-15 01:30:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 01:30:32,907 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 states have internal predecessors, (87), 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) Word has length 35 [2023-02-15 01:30:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:32,908 INFO L225 Difference]: With dead ends: 240 [2023-02-15 01:30:32,908 INFO L226 Difference]: Without dead ends: 240 [2023-02-15 01:30:32,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2023-02-15 01:30:32,909 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 499 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:32,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 419 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 01:30:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-15 01:30:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 185. [2023-02-15 01:30:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 164 states have (on average 1.2378048780487805) internal successors, (203), 184 states have internal predecessors, (203), 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) [2023-02-15 01:30:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2023-02-15 01:30:32,911 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 35 [2023-02-15 01:30:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:32,911 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2023-02-15 01:30:32,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 states have internal predecessors, (87), 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) [2023-02-15 01:30:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2023-02-15 01:30:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 01:30:32,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:32,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:32,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 01:30:33,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:33,118 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash 583164819, now seen corresponding path program 1 times [2023-02-15 01:30:33,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:33,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980353339] [2023-02-15 01:30:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:33,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:33,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980353339] [2023-02-15 01:30:33,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980353339] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:33,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125302594] [2023-02-15 01:30:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:33,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:33,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:33,440 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) [2023-02-15 01:30:33,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 01:30:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:33,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 01:30:33,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:33,637 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:30:33,638 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 [2023-02-15 01:30:33,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:33,714 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:33,714 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-02-15 01:30:33,967 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:33,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:33,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 16 [2023-02-15 01:30:33,980 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 [2023-02-15 01:30:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:33,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:34,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:34,023 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 25 treesize of output 29 [2023-02-15 01:30:34,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:34,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 19 treesize of output 20 [2023-02-15 01:30:34,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:34,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 36 [2023-02-15 01:30:34,277 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 20 treesize of output 18 [2023-02-15 01:30:34,305 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 01:30:34,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 33 treesize of output 1 [2023-02-15 01:30:34,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:34,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 129 [2023-02-15 01:30:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:34,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125302594] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:34,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:34,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 36 [2023-02-15 01:30:34,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604648243] [2023-02-15 01:30:34,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:34,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 01:30:34,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 01:30:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1171, Unknown=5, NotChecked=0, Total=1332 [2023-02-15 01:30:34,639 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 37 states have internal predecessors, (85), 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) [2023-02-15 01:30:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:35,669 INFO L93 Difference]: Finished difference Result 233 states and 246 transitions. [2023-02-15 01:30:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 01:30:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 37 states have internal predecessors, (85), 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) Word has length 35 [2023-02-15 01:30:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:35,670 INFO L225 Difference]: With dead ends: 233 [2023-02-15 01:30:35,670 INFO L226 Difference]: Without dead ends: 233 [2023-02-15 01:30:35,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=1931, Unknown=5, NotChecked=0, Total=2352 [2023-02-15 01:30:35,671 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 575 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:35,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 795 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 01:30:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-15 01:30:35,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 191. [2023-02-15 01:30:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 170 states have (on average 1.2294117647058824) internal successors, (209), 190 states have internal predecessors, (209), 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) [2023-02-15 01:30:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 209 transitions. [2023-02-15 01:30:35,674 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 209 transitions. Word has length 35 [2023-02-15 01:30:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:35,674 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 209 transitions. [2023-02-15 01:30:35,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 37 states have internal predecessors, (85), 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) [2023-02-15 01:30:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 209 transitions. [2023-02-15 01:30:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 01:30:35,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:35,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:35,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 01:30:35,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:35,880 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1162079456, now seen corresponding path program 1 times [2023-02-15 01:30:35,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:35,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096447281] [2023-02-15 01:30:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:36,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:36,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096447281] [2023-02-15 01:30:36,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096447281] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:36,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801512838] [2023-02-15 01:30:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:36,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:36,359 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) [2023-02-15 01:30:36,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 01:30:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:36,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 01:30:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:36,492 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 [2023-02-15 01:30:36,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 01:30:36,549 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:30:36,549 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 [2023-02-15 01:30:36,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:36,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:30:36,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2023-02-15 01:30:36,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 8 [2023-02-15 01:30:36,681 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 16 treesize of output 18 [2023-02-15 01:30:36,711 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 16 treesize of output 18 [2023-02-15 01:30:36,727 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:30:36,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2023-02-15 01:30:36,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:36,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2023-02-15 01:30:36,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 8 [2023-02-15 01:30:36,818 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 16 treesize of output 18 [2023-02-15 01:30:36,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:36,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 15 [2023-02-15 01:30:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:36,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:37,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:37,544 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 79 treesize of output 97 [2023-02-15 01:30:41,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:41,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:41,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 33 [2023-02-15 01:30:41,975 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:41,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:41,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33 [2023-02-15 01:30:41,985 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 20 treesize of output 18 [2023-02-15 01:30:42,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:42,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:42,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2023-02-15 01:30:42,015 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:42,015 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:42,022 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 01:30:42,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2023-02-15 01:30:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:42,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801512838] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:42,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:42,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2023-02-15 01:30:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913497500] [2023-02-15 01:30:42,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:42,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-15 01:30:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-15 01:30:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1434, Unknown=23, NotChecked=0, Total=1640 [2023-02-15 01:30:42,114 INFO L87 Difference]: Start difference. First operand 191 states and 209 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) [2023-02-15 01:30:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:43,796 INFO L93 Difference]: Finished difference Result 275 states and 292 transitions. [2023-02-15 01:30:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 01:30:43,798 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) Word has length 35 [2023-02-15 01:30:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:43,800 INFO L225 Difference]: With dead ends: 275 [2023-02-15 01:30:43,800 INFO L226 Difference]: Without dead ends: 275 [2023-02-15 01:30:43,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=540, Invalid=2859, Unknown=23, NotChecked=0, Total=3422 [2023-02-15 01:30:43,802 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 438 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:43,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1174 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 01:30:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-02-15 01:30:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2023-02-15 01:30:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 164 states have (on average 1.2317073170731707) internal successors, (202), 184 states have internal predecessors, (202), 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) [2023-02-15 01:30:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 202 transitions. [2023-02-15 01:30:43,810 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 202 transitions. Word has length 35 [2023-02-15 01:30:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:43,811 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 202 transitions. [2023-02-15 01:30:43,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) [2023-02-15 01:30:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 202 transitions. [2023-02-15 01:30:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 01:30:43,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:43,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:43,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 01:30:44,018 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,SelfDestructingSolverStorable26 [2023-02-15 01:30:44,018 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1536470862, now seen corresponding path program 1 times [2023-02-15 01:30:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:44,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581130925] [2023-02-15 01:30:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:44,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:44,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581130925] [2023-02-15 01:30:44,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581130925] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:30:44,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:30:44,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 01:30:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829446414] [2023-02-15 01:30:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:30:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 01:30:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 01:30:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-15 01:30:44,101 INFO L87 Difference]: Start difference. First operand 185 states and 202 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2023-02-15 01:30:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:44,297 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2023-02-15 01:30:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 01:30:44,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) Word has length 36 [2023-02-15 01:30:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:44,298 INFO L225 Difference]: With dead ends: 212 [2023-02-15 01:30:44,298 INFO L226 Difference]: Without dead ends: 212 [2023-02-15 01:30:44,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-02-15 01:30:44,299 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 82 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:44,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 309 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:30:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-15 01:30:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2023-02-15 01:30:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 171 states have (on average 1.2339181286549707) internal successors, (211), 191 states have internal predecessors, (211), 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) [2023-02-15 01:30:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 211 transitions. [2023-02-15 01:30:44,305 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 211 transitions. Word has length 36 [2023-02-15 01:30:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:44,306 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 211 transitions. [2023-02-15 01:30:44,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2023-02-15 01:30:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 211 transitions. [2023-02-15 01:30:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 01:30:44,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:44,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:44,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-15 01:30:44,307 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2075647413, now seen corresponding path program 1 times [2023-02-15 01:30:44,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:44,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33628538] [2023-02-15 01:30:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:44,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:44,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33628538] [2023-02-15 01:30:44,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33628538] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:44,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475676094] [2023-02-15 01:30:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:44,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:44,632 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) [2023-02-15 01:30:44,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 01:30:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:44,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 01:30:44,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:44,861 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:30:44,861 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 [2023-02-15 01:30:44,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 01:30:44,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:44,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 8 [2023-02-15 01:30:44,946 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 14 treesize of output 16 [2023-02-15 01:30:45,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-15 01:30:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:45,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:45,074 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 20 treesize of output 16 [2023-02-15 01:30:45,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:45,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 18 treesize of output 19 [2023-02-15 01:30:45,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:45,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 33 [2023-02-15 01:30:45,212 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 5 treesize of output 3 [2023-02-15 01:30:45,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:45,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-15 01:30:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:45,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475676094] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:30:45,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:30:45,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 32 [2023-02-15 01:30:45,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751928733] [2023-02-15 01:30:45,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:30:45,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-15 01:30:45,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:30:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-15 01:30:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=897, Unknown=2, NotChecked=0, Total=1056 [2023-02-15 01:30:45,457 INFO L87 Difference]: Start difference. First operand 192 states and 211 transitions. Second operand has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 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) [2023-02-15 01:30:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:30:46,388 INFO L93 Difference]: Finished difference Result 234 states and 248 transitions. [2023-02-15 01:30:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 01:30:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 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) Word has length 37 [2023-02-15 01:30:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:30:46,389 INFO L225 Difference]: With dead ends: 234 [2023-02-15 01:30:46,389 INFO L226 Difference]: Without dead ends: 234 [2023-02-15 01:30:46,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=626, Invalid=2234, Unknown=2, NotChecked=0, Total=2862 [2023-02-15 01:30:46,390 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 515 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 01:30:46,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 719 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 01:30:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-02-15 01:30:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 198. [2023-02-15 01:30:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 177 states have (on average 1.231638418079096) internal successors, (218), 197 states have internal predecessors, (218), 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) [2023-02-15 01:30:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 218 transitions. [2023-02-15 01:30:46,393 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 218 transitions. Word has length 37 [2023-02-15 01:30:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:30:46,393 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 218 transitions. [2023-02-15 01:30:46,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 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) [2023-02-15 01:30:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 218 transitions. [2023-02-15 01:30:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 01:30:46,393 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:30:46,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:30:46,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 01:30:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-02-15 01:30:46,599 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:30:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:30:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash 203412162, now seen corresponding path program 1 times [2023-02-15 01:30:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:30:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228341858] [2023-02-15 01:30:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:46,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:30:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:47,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:30:47,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228341858] [2023-02-15 01:30:47,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228341858] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:30:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126357788] [2023-02-15 01:30:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:30:47,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:30:47,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:30:47,412 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 01:30:47,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 01:30:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:30:47,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 71 conjunts are in the unsatisfiable core [2023-02-15 01:30:47,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:30:47,575 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 [2023-02-15 01:30:47,605 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 01:30:47,605 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 [2023-02-15 01:30:47,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-02-15 01:30:47,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 01:30:47,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:30:47,805 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 01:30:47,805 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-15 01:30:47,808 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 5 treesize of output 3 [2023-02-15 01:30:47,824 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:47,824 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 1 case distinctions, treesize of input 40 treesize of output 36 [2023-02-15 01:30:47,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-15 01:30:47,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 01:30:47,956 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 01:30:47,957 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-15 01:30:47,962 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 5 treesize of output 3 [2023-02-15 01:30:47,975 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:30:47,976 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:30:48,035 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-15 01:30:48,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-15 01:30:48,077 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 21 treesize of output 20 [2023-02-15 01:30:48,087 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 01:30:48,087 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-15 01:30:48,092 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 5 treesize of output 3 [2023-02-15 01:30:48,108 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:48,115 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 01:30:48,116 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 1 case distinctions, treesize of input 35 treesize of output 26 [2023-02-15 01:30:48,205 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-15 01:30:48,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 67 [2023-02-15 01:30:48,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 30 [2023-02-15 01:30:48,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 24 [2023-02-15 01:30:48,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:48,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 01:30:48,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:30:48,355 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2023-02-15 01:30:48,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 29 [2023-02-15 01:30:48,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-15 01:30:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:30:48,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:30:48,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:48,712 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 1 case distinctions, treesize of input 48 treesize of output 52 [2023-02-15 01:30:48,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:48,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 57 [2023-02-15 01:30:48,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:30:48,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 100 treesize of output 99 [2023-02-15 01:30:48,735 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 37 treesize of output 21 [2023-02-15 01:30:48,760 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 24 treesize of output 20 [2023-02-15 01:31:01,641 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 01:31:06,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 25 treesize of output 26 [2023-02-15 01:31:06,076 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 154 treesize of output 153 [2023-02-15 01:31:06,081 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 138 treesize of output 130 [2023-02-15 01:31:06,085 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 130 treesize of output 126 [2023-02-15 01:31:06,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 24 [2023-02-15 01:31:06,265 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:06,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 33 [2023-02-15 01:31:06,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,283 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 18 treesize of output 22 [2023-02-15 01:31:06,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 21 treesize of output 22 [2023-02-15 01:31:06,330 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:06,339 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 33 [2023-02-15 01:31:06,344 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 9 treesize of output 7 [2023-02-15 01:31:06,390 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 26 treesize of output 27 [2023-02-15 01:31:06,395 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:06,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 40 [2023-02-15 01:31:06,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:06,416 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 33 treesize of output 33 [2023-02-15 01:31:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:06,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126357788] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:31:06,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:31:06,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 45 [2023-02-15 01:31:06,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842688529] [2023-02-15 01:31:06,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:31:06,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-02-15 01:31:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:31:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-02-15 01:31:06,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1779, Unknown=4, NotChecked=0, Total=1980 [2023-02-15 01:31:06,976 INFO L87 Difference]: Start difference. First operand 198 states and 218 transitions. Second operand has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:31:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:31:09,800 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2023-02-15 01:31:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-15 01:31:09,801 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-15 01:31:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:31:09,801 INFO L225 Difference]: With dead ends: 264 [2023-02-15 01:31:09,802 INFO L226 Difference]: Without dead ends: 264 [2023-02-15 01:31:09,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=577, Invalid=4111, Unknown=4, NotChecked=0, Total=4692 [2023-02-15 01:31:09,803 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 546 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-15 01:31:09,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1347 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-15 01:31:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-02-15 01:31:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 198. [2023-02-15 01:31:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 177 states have (on average 1.2259887005649717) internal successors, (217), 197 states have internal predecessors, (217), 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) [2023-02-15 01:31:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 217 transitions. [2023-02-15 01:31:09,806 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 217 transitions. Word has length 37 [2023-02-15 01:31:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:31:09,806 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 217 transitions. [2023-02-15 01:31:09,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:31:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 217 transitions. [2023-02-15 01:31:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 01:31:09,807 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:31:09,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:31:09,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-15 01:31:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:31:10,012 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:31:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:31:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1536723089, now seen corresponding path program 1 times [2023-02-15 01:31:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:31:10,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918065364] [2023-02-15 01:31:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:31:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:10,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:31:10,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918065364] [2023-02-15 01:31:10,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918065364] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:31:10,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:31:10,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-15 01:31:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991326818] [2023-02-15 01:31:10,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:31:10,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 01:31:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:31:10,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 01:31:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-15 01:31:10,237 INFO L87 Difference]: Start difference. First operand 198 states and 217 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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) [2023-02-15 01:31:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:31:10,596 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2023-02-15 01:31:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 01:31:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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) Word has length 39 [2023-02-15 01:31:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:31:10,597 INFO L225 Difference]: With dead ends: 212 [2023-02-15 01:31:10,598 INFO L226 Difference]: Without dead ends: 212 [2023-02-15 01:31:10,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-02-15 01:31:10,598 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 143 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 01:31:10,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 308 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 01:31:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-15 01:31:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2023-02-15 01:31:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 181 states have (on average 1.2209944751381216) internal successors, (221), 201 states have internal predecessors, (221), 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) [2023-02-15 01:31:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 221 transitions. [2023-02-15 01:31:10,603 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 221 transitions. Word has length 39 [2023-02-15 01:31:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:31:10,603 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 221 transitions. [2023-02-15 01:31:10,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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) [2023-02-15 01:31:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 221 transitions. [2023-02-15 01:31:10,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 01:31:10,607 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:31:10,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:31:10,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-15 01:31:10,609 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:31:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:31:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1832342548, now seen corresponding path program 1 times [2023-02-15 01:31:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:31:10,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066561117] [2023-02-15 01:31:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:31:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:31:10,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066561117] [2023-02-15 01:31:10,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066561117] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:31:10,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99788659] [2023-02-15 01:31:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:10,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:31:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:31:10,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 01:31:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 01:31:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:10,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 01:31:10,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:31:11,015 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:31:11,015 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 [2023-02-15 01:31:11,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:31:11,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 01:31:11,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 8 [2023-02-15 01:31:11,080 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 14 treesize of output 16 [2023-02-15 01:31:11,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-15 01:31:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:11,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:31:11,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:11,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 18 treesize of output 19 [2023-02-15 01:31:11,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:11,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 33 [2023-02-15 01:31:11,245 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 5 treesize of output 3 [2023-02-15 01:31:11,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:11,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-15 01:31:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:11,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99788659] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:31:11,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:31:11,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 27 [2023-02-15 01:31:11,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891959494] [2023-02-15 01:31:11,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:31:11,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 01:31:11,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:31:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 01:31:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=625, Unknown=2, NotChecked=0, Total=756 [2023-02-15 01:31:11,344 INFO L87 Difference]: Start difference. First operand 202 states and 221 transitions. Second operand has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 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) [2023-02-15 01:31:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:31:11,920 INFO L93 Difference]: Finished difference Result 229 states and 241 transitions. [2023-02-15 01:31:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 01:31:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 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) Word has length 39 [2023-02-15 01:31:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:31:11,921 INFO L225 Difference]: With dead ends: 229 [2023-02-15 01:31:11,921 INFO L226 Difference]: Without dead ends: 229 [2023-02-15 01:31:11,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=1011, Unknown=2, NotChecked=0, Total=1332 [2023-02-15 01:31:11,922 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 491 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 01:31:11,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 682 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 01:31:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-02-15 01:31:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 208. [2023-02-15 01:31:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 207 states have internal predecessors, (230), 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) [2023-02-15 01:31:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 230 transitions. [2023-02-15 01:31:11,924 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 230 transitions. Word has length 39 [2023-02-15 01:31:11,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:31:11,924 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 230 transitions. [2023-02-15 01:31:11,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 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) [2023-02-15 01:31:11,925 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 230 transitions. [2023-02-15 01:31:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 01:31:11,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:31:11,925 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:31:11,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 01:31:12,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-02-15 01:31:12,134 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:31:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:31:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1681982138, now seen corresponding path program 2 times [2023-02-15 01:31:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:31:12,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564734602] [2023-02-15 01:31:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:12,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:31:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 01:31:12,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:31:12,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564734602] [2023-02-15 01:31:12,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564734602] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:31:12,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119101020] [2023-02-15 01:31:12,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:31:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:31:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:31:12,762 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 01:31:12,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 01:31:12,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 01:31:12,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:31:12,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-15 01:31:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:31:12,926 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 [2023-02-15 01:31:12,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 01:31:12,983 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:31:12,984 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 [2023-02-15 01:31:13,009 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 21 treesize of output 20 [2023-02-15 01:31:13,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:31:13,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 8 [2023-02-15 01:31:13,072 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 16 treesize of output 18 [2023-02-15 01:31:13,109 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 01:31:13,110 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 17 treesize of output 21 [2023-02-15 01:31:13,120 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 16 treesize of output 18 [2023-02-15 01:31:13,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:31:13,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 8 [2023-02-15 01:31:13,177 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 16 treesize of output 18 [2023-02-15 01:31:13,212 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 16 treesize of output 18 [2023-02-15 01:31:13,262 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-15 01:31:13,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 01:31:13,299 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 16 treesize of output 18 [2023-02-15 01:31:13,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:31:13,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 12 [2023-02-15 01:31:13,348 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 16 treesize of output 18 [2023-02-15 01:31:13,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-15 01:31:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 01:31:13,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:31:13,395 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1772 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_1772) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2023-02-15 01:31:13,399 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1772 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1772) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2023-02-15 01:31:13,811 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2023-02-15 01:31:13,812 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 22 [2023-02-15 01:31:14,041 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1764 (Array Int Int)) (v_ArrVal_1761 Int) (v_ArrVal_1772 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc3#1.base_31| Int) (v_ArrVal_1770 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc5#1.base_37| Int) (|v_ULTIMATE.start_main_#t~malloc3#1.base_29| Int)) (or (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_#t~malloc5#1.base_37|) (= |v_ULTIMATE.start_main_#t~malloc3#1.base_29| |v_ULTIMATE.start_main_#t~malloc5#1.base_37|) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_31|) 0)) (= (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_1761)) |v_ULTIMATE.start_main_#t~malloc3#1.base_31| v_ArrVal_1764) |v_ULTIMATE.start_main_#t~malloc3#1.base_29| v_ArrVal_1770) |v_ULTIMATE.start_main_#t~malloc5#1.base_37| v_ArrVal_1772) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_#t~malloc3#1.base_29|))) is different from false [2023-02-15 01:31:14,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:14,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2023-02-15 01:31:14,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:14,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:14,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2023-02-15 01:31:14,057 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 [2023-02-15 01:31:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:14,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119101020] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:31:14,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:31:14,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 20] total 42 [2023-02-15 01:31:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78672197] [2023-02-15 01:31:14,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:31:14,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 01:31:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:31:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 01:31:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1243, Unknown=22, NotChecked=228, Total=1722 [2023-02-15 01:31:14,090 INFO L87 Difference]: Start difference. First operand 208 states and 230 transitions. Second operand has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 42 states have internal predecessors, (86), 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) [2023-02-15 01:31:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:31:15,680 INFO L93 Difference]: Finished difference Result 240 states and 257 transitions. [2023-02-15 01:31:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 01:31:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 42 states have internal predecessors, (86), 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) Word has length 39 [2023-02-15 01:31:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:31:15,681 INFO L225 Difference]: With dead ends: 240 [2023-02-15 01:31:15,681 INFO L226 Difference]: Without dead ends: 240 [2023-02-15 01:31:15,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=2620, Unknown=23, NotChecked=336, Total=3540 [2023-02-15 01:31:15,683 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 188 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 35 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:31:15,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1198 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1946 Invalid, 6 Unknown, 325 Unchecked, 1.1s Time] [2023-02-15 01:31:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-15 01:31:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 208. [2023-02-15 01:31:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 187 states have (on average 1.2245989304812834) internal successors, (229), 207 states have internal predecessors, (229), 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) [2023-02-15 01:31:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 229 transitions. [2023-02-15 01:31:15,686 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 229 transitions. Word has length 39 [2023-02-15 01:31:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:31:15,687 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 229 transitions. [2023-02-15 01:31:15,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 42 states have internal predecessors, (86), 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) [2023-02-15 01:31:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 229 transitions. [2023-02-15 01:31:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 01:31:15,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:31:15,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:31:15,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 01:31:15,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-02-15 01:31:15,889 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:31:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:31:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash -393775241, now seen corresponding path program 1 times [2023-02-15 01:31:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:31:15,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142923340] [2023-02-15 01:31:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:15,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:31:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:31:16,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142923340] [2023-02-15 01:31:16,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142923340] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:31:16,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:31:16,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-15 01:31:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143780738] [2023-02-15 01:31:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:31:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 01:31:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:31:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 01:31:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-02-15 01:31:16,237 INFO L87 Difference]: Start difference. First operand 208 states and 229 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 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) [2023-02-15 01:31:16,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:31:16,462 INFO L93 Difference]: Finished difference Result 212 states and 229 transitions. [2023-02-15 01:31:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 01:31:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 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) Word has length 40 [2023-02-15 01:31:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:31:16,463 INFO L225 Difference]: With dead ends: 212 [2023-02-15 01:31:16,463 INFO L226 Difference]: Without dead ends: 201 [2023-02-15 01:31:16,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-02-15 01:31:16,464 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 78 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:31:16,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 305 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:31:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-15 01:31:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2023-02-15 01:31:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 177 states have (on average 1.231638418079096) internal successors, (218), 197 states have internal predecessors, (218), 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) [2023-02-15 01:31:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 218 transitions. [2023-02-15 01:31:16,466 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 218 transitions. Word has length 40 [2023-02-15 01:31:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:31:16,466 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 218 transitions. [2023-02-15 01:31:16,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 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) [2023-02-15 01:31:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 218 transitions. [2023-02-15 01:31:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 01:31:16,467 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:31:16,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:31:16,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-02-15 01:31:16,467 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:31:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:31:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash 968044359, now seen corresponding path program 1 times [2023-02-15 01:31:16,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:31:16,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392749320] [2023-02-15 01:31:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:31:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:31:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392749320] [2023-02-15 01:31:16,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392749320] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:31:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374854675] [2023-02-15 01:31:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:31:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:31:16,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 01:31:16,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 01:31:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:16,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 01:31:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:31:16,918 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 01:31:16,918 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 [2023-02-15 01:31:16,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:31:17,028 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:31:17,029 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-02-15 01:31:17,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-02-15 01:31:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:17,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:31:17,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:17,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 20 treesize of output 21 [2023-02-15 01:31:17,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:17,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 37 [2023-02-15 01:31:17,493 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 [2023-02-15 01:31:17,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:17,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-15 01:31:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:17,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374854675] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:31:17,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:31:17,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 29 [2023-02-15 01:31:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734800065] [2023-02-15 01:31:17,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:31:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 01:31:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:31:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 01:31:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=732, Unknown=3, NotChecked=0, Total=870 [2023-02-15 01:31:17,655 INFO L87 Difference]: Start difference. First operand 198 states and 218 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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) [2023-02-15 01:31:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:31:18,429 INFO L93 Difference]: Finished difference Result 215 states and 227 transitions. [2023-02-15 01:31:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 01:31:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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) Word has length 40 [2023-02-15 01:31:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:31:18,430 INFO L225 Difference]: With dead ends: 215 [2023-02-15 01:31:18,430 INFO L226 Difference]: Without dead ends: 215 [2023-02-15 01:31:18,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=1484, Unknown=3, NotChecked=0, Total=1892 [2023-02-15 01:31:18,430 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 530 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 01:31:18,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 523 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 01:31:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-02-15 01:31:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 185. [2023-02-15 01:31:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 164 states have (on average 1.225609756097561) internal successors, (201), 184 states have internal predecessors, (201), 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) [2023-02-15 01:31:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 201 transitions. [2023-02-15 01:31:18,433 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 201 transitions. Word has length 40 [2023-02-15 01:31:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:31:18,433 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 201 transitions. [2023-02-15 01:31:18,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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) [2023-02-15 01:31:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 201 transitions. [2023-02-15 01:31:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 01:31:18,433 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:31:18,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:31:18,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-15 01:31:18,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-02-15 01:31:18,639 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-02-15 01:31:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:31:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1319371661, now seen corresponding path program 1 times [2023-02-15 01:31:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:31:18,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228478087] [2023-02-15 01:31:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:18,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:31:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:19,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:31:19,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228478087] [2023-02-15 01:31:19,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228478087] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:31:19,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709443903] [2023-02-15 01:31:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:31:19,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:31:19,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:31:19,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 01:31:19,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 01:31:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:31:19,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 65 conjunts are in the unsatisfiable core [2023-02-15 01:31:19,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:31:19,272 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 [2023-02-15 01:31:19,345 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 01:31:19,345 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 [2023-02-15 01:31:19,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-15 01:31:19,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 01:31:19,498 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:31:19,498 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:31:19,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:31:19,507 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 14 treesize of output 16 [2023-02-15 01:31:19,563 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:31:19,563 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 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 01:31:19,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:31:19,575 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 14 treesize of output 16 [2023-02-15 01:31:19,618 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-02-15 01:31:19,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-02-15 01:31:19,669 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 01:31:19,669 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-15 01:31:19,673 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 5 treesize of output 3 [2023-02-15 01:31:19,690 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 01:31:19,691 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 1 case distinctions, treesize of input 44 treesize of output 31 [2023-02-15 01:31:19,809 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-15 01:31:19,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 88 [2023-02-15 01:31:19,816 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 01:31:19,818 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 71 [2023-02-15 01:31:19,948 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:19,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2023-02-15 01:31:20,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:31:20,098 INFO L321 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2023-02-15 01:31:20,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 35 [2023-02-15 01:31:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:31:20,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:31:20,568 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:20,569 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 1 case distinctions, treesize of input 44 treesize of output 45 [2023-02-15 01:31:21,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:21,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 70 treesize of output 71 [2023-02-15 01:31:21,046 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:21,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 78 treesize of output 71 [2023-02-15 01:31:21,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:21,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 260 treesize of output 199 [2023-02-15 01:31:21,743 INFO L321 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2023-02-15 01:31:21,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 4970 treesize of output 4939 [2023-02-15 01:31:21,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:21,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 4642 treesize of output 3748 [2023-02-15 01:31:21,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 01:31:21,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3664 treesize of output 3420 [2023-02-15 01:31:21,893 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 219 treesize of output 181 [2023-02-15 01:31:21,921 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 209 treesize of output 171