./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 26d01a9c 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-?-26d01a9 [2023-02-18 06:30:40,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 06:30:40,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 06:30:40,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 06:30:40,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 06:30:40,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 06:30:40,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 06:30:40,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 06:30:40,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 06:30:40,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 06:30:40,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 06:30:40,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 06:30:40,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 06:30:40,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 06:30:40,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 06:30:40,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 06:30:40,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 06:30:40,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 06:30:40,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 06:30:40,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 06:30:40,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 06:30:40,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 06:30:40,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 06:30:40,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 06:30:40,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 06:30:40,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 06:30:40,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 06:30:40,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 06:30:40,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 06:30:40,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 06:30:40,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 06:30:40,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 06:30:40,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 06:30:40,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 06:30:40,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 06:30:40,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 06:30:40,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 06:30:40,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 06:30:40,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 06:30:40,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 06:30:40,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 06:30:40,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 06:30:40,809 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 06:30:40,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 06:30:40,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 06:30:40,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 06:30:40,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 06:30:40,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 06:30:40,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 06:30:40,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 06:30:40,812 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 06:30:40,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 06:30:40,813 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 06:30:40,813 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 06:30:40,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 06:30:40,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 06:30:40,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 06:30:40,814 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 06:30:40,814 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 06:30:40,814 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 06:30:40,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 06:30:40,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 06:30:40,815 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 06:30:40,815 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 06:30:40,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 06:30:40,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 06:30:40,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 06:30:40,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:30:40,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 06:30:40,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 06:30:40,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 06:30:40,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 06:30:40,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 06:30:40,817 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 06:30:40,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 06:30:40,818 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 06:30:40,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b [2023-02-18 06:30:41,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 06:30:41,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 06:30:41,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 06:30:41,101 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 06:30:41,101 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 06:30:41,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-2.i [2023-02-18 06:30:42,255 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 06:30:42,462 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 06:30:42,464 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i [2023-02-18 06:30:42,478 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa88b54d/85c1db7cfef64ff28f9060b8291a51a3/FLAGa110632e6 [2023-02-18 06:30:42,493 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa88b54d/85c1db7cfef64ff28f9060b8291a51a3 [2023-02-18 06:30:42,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 06:30:42,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 06:30:42,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 06:30:42,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 06:30:42,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 06:30:42,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343fd374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42, skipping insertion in model container [2023-02-18 06:30:42,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 06:30:42,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 06:30:42,759 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] [2023-02-18 06:30:42,764 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] [2023-02-18 06:30:42,767 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] [2023-02-18 06:30:42,769 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] [2023-02-18 06:30:42,770 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] [2023-02-18 06:30:42,778 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] [2023-02-18 06:30:42,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:30:42,794 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 06:30:42,827 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] [2023-02-18 06:30:42,828 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] [2023-02-18 06:30:42,829 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] [2023-02-18 06:30:42,830 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] [2023-02-18 06:30:42,831 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] [2023-02-18 06:30:42,832 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] [2023-02-18 06:30:42,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:30:42,854 INFO L208 MainTranslator]: Completed translation [2023-02-18 06:30:42,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42 WrapperNode [2023-02-18 06:30:42,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 06:30:42,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 06:30:42,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 06:30:42,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 06:30:42,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,906 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 132 [2023-02-18 06:30:42,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 06:30:42,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 06:30:42,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 06:30:42,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 06:30:42,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 06:30:42,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 06:30:42,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 06:30:42,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 06:30:42,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (1/1) ... [2023-02-18 06:30:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:30:42,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:30:43,005 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) [2023-02-18 06:30:43,006 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 [2023-02-18 06:30:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 06:30:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 06:30:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 06:30:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 06:30:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 06:30:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 06:30:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 06:30:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 06:30:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 06:30:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 06:30:43,122 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 06:30:43,124 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 06:30:43,429 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 06:30:43,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 06:30:43,442 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2023-02-18 06:30:43,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:30:43 BoogieIcfgContainer [2023-02-18 06:30:43,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 06:30:43,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 06:30:43,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 06:30:43,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 06:30:43,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 06:30:42" (1/3) ... [2023-02-18 06:30:43,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156db14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:30:43, skipping insertion in model container [2023-02-18 06:30:43,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:30:42" (2/3) ... [2023-02-18 06:30:43,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156db14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:30:43, skipping insertion in model container [2023-02-18 06:30:43,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:30:43" (3/3) ... [2023-02-18 06:30:43,477 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2023-02-18 06:30:43,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 06:30:43,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-02-18 06:30:43,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 06:30:43,568 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;@1bda6ebc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 06:30:43,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-02-18 06:30:43,574 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) [2023-02-18 06:30:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 06:30:43,580 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:43,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 06:30:43,581 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)] === [2023-02-18 06:30:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-18 06:30:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272840787] [2023-02-18 06:30:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:43,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272840787] [2023-02-18 06:30:43,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272840787] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:43,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:43,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:30:43,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516070918] [2023-02-18 06:30:43,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:30:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:30:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:30:43,825 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) [2023-02-18 06:30:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:43,922 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2023-02-18 06:30:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:30:43,925 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 [2023-02-18 06:30:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:43,933 INFO L225 Difference]: With dead ends: 137 [2023-02-18 06:30:43,933 INFO L226 Difference]: Without dead ends: 135 [2023-02-18 06:30:43,935 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 [2023-02-18 06:30:43,938 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 [2023-02-18 06:30:43,939 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] [2023-02-18 06:30:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-18 06:30:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2023-02-18 06:30:43,968 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) [2023-02-18 06:30:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2023-02-18 06:30:43,971 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 3 [2023-02-18 06:30:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:43,972 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2023-02-18 06:30:43,972 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) [2023-02-18 06:30:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2023-02-18 06:30:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 06:30:43,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:43,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 06:30:43,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 06:30:43,973 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)] === [2023-02-18 06:30:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-18 06:30:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:43,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703303636] [2023-02-18 06:30:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:44,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:44,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703303636] [2023-02-18 06:30:44,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703303636] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:44,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:44,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:30:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710201388] [2023-02-18 06:30:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:30:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:30:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:30:44,064 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) [2023-02-18 06:30:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:44,178 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2023-02-18 06:30:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:30:44,181 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 [2023-02-18 06:30:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:44,182 INFO L225 Difference]: With dead ends: 141 [2023-02-18 06:30:44,182 INFO L226 Difference]: Without dead ends: 141 [2023-02-18 06:30:44,183 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 [2023-02-18 06:30:44,184 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:30:44,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 99 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:30:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-18 06:30:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2023-02-18 06:30:44,190 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) [2023-02-18 06:30:44,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2023-02-18 06:30:44,192 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 3 [2023-02-18 06:30:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:44,192 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2023-02-18 06:30:44,192 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) [2023-02-18 06:30:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2023-02-18 06:30:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 06:30:44,193 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:44,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:44,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 06:30:44,194 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)] === [2023-02-18 06:30:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 59263631, now seen corresponding path program 1 times [2023-02-18 06:30:44,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616997231] [2023-02-18 06:30:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:44,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:44,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616997231] [2023-02-18 06:30:44,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616997231] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:44,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:44,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 06:30:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060074335] [2023-02-18 06:30:44,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:44,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:30:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:44,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:30:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:30:44,253 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) [2023-02-18 06:30:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:44,375 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2023-02-18 06:30:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:30:44,376 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 [2023-02-18 06:30:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:44,377 INFO L225 Difference]: With dead ends: 119 [2023-02-18 06:30:44,377 INFO L226 Difference]: Without dead ends: 119 [2023-02-18 06:30:44,378 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 [2023-02-18 06:30:44,379 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 [2023-02-18 06:30:44,379 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] [2023-02-18 06:30:44,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-18 06:30:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 102. [2023-02-18 06:30:44,385 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) [2023-02-18 06:30:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2023-02-18 06:30:44,387 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 8 [2023-02-18 06:30:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:44,387 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2023-02-18 06:30:44,387 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) [2023-02-18 06:30:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2023-02-18 06:30:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 06:30:44,388 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:44,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:44,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 06:30:44,388 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)] === [2023-02-18 06:30:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 59263632, now seen corresponding path program 1 times [2023-02-18 06:30:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:44,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383172470] [2023-02-18 06:30:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:44,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:44,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383172470] [2023-02-18 06:30:44,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383172470] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:44,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:44,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 06:30:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818336774] [2023-02-18 06:30:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:30:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:30:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:30:44,550 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) [2023-02-18 06:30:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:44,753 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2023-02-18 06:30:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:30:44,754 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 [2023-02-18 06:30:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:44,755 INFO L225 Difference]: With dead ends: 184 [2023-02-18 06:30:44,756 INFO L226 Difference]: Without dead ends: 184 [2023-02-18 06:30:44,756 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 [2023-02-18 06:30:44,757 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:30:44,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 104 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:30:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-02-18 06:30:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 133. [2023-02-18 06:30:44,765 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) [2023-02-18 06:30:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2023-02-18 06:30:44,767 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 8 [2023-02-18 06:30:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:44,767 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2023-02-18 06:30:44,767 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) [2023-02-18 06:30:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2023-02-18 06:30:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 06:30:44,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:44,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:44,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 06:30:44,769 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)] === [2023-02-18 06:30:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2023-02-18 06:30:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:44,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098752673] [2023-02-18 06:30:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:44,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:44,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098752673] [2023-02-18 06:30:44,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098752673] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:44,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:44,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:30:44,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122037080] [2023-02-18 06:30:44,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:44,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:30:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:30:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:30:44,918 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) [2023-02-18 06:30:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:45,091 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2023-02-18 06:30:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 06:30:45,092 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 [2023-02-18 06:30:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:45,095 INFO L225 Difference]: With dead ends: 132 [2023-02-18 06:30:45,095 INFO L226 Difference]: Without dead ends: 132 [2023-02-18 06:30:45,096 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 [2023-02-18 06:30:45,099 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 [2023-02-18 06:30:45,099 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] [2023-02-18 06:30:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-18 06:30:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-02-18 06:30:45,110 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) [2023-02-18 06:30:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2023-02-18 06:30:45,111 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 12 [2023-02-18 06:30:45,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:45,111 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2023-02-18 06:30:45,111 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) [2023-02-18 06:30:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2023-02-18 06:30:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 06:30:45,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:45,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:45,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 06:30:45,113 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)] === [2023-02-18 06:30:45,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:45,113 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2023-02-18 06:30:45,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:45,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302969608] [2023-02-18 06:30:45,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:45,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:45,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:45,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302969608] [2023-02-18 06:30:45,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302969608] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:45,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:45,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:30:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417876735] [2023-02-18 06:30:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:45,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:30:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:30:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:30:45,270 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) [2023-02-18 06:30:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:45,447 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2023-02-18 06:30:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 06:30:45,448 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 [2023-02-18 06:30:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:45,449 INFO L225 Difference]: With dead ends: 131 [2023-02-18 06:30:45,449 INFO L226 Difference]: Without dead ends: 131 [2023-02-18 06:30:45,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-18 06:30:45,458 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 [2023-02-18 06:30:45,459 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] [2023-02-18 06:30:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-18 06:30:45,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2023-02-18 06:30:45,472 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) [2023-02-18 06:30:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2023-02-18 06:30:45,475 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2023-02-18 06:30:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:45,476 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2023-02-18 06:30:45,476 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) [2023-02-18 06:30:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2023-02-18 06:30:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 06:30:45,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:45,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:45,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 06:30:45,477 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)] === [2023-02-18 06:30:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash 763856048, now seen corresponding path program 1 times [2023-02-18 06:30:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:45,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978516234] [2023-02-18 06:30:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:45,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:45,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978516234] [2023-02-18 06:30:45,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978516234] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:45,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:45,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:30:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133234780] [2023-02-18 06:30:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:45,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:30:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:30:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:30:45,591 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) [2023-02-18 06:30:45,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:45,688 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2023-02-18 06:30:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 06:30:45,688 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 [2023-02-18 06:30:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:45,689 INFO L225 Difference]: With dead ends: 115 [2023-02-18 06:30:45,689 INFO L226 Difference]: Without dead ends: 115 [2023-02-18 06:30:45,690 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 [2023-02-18 06:30:45,691 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 [2023-02-18 06:30:45,691 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] [2023-02-18 06:30:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-18 06:30:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-02-18 06:30:45,706 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) [2023-02-18 06:30:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2023-02-18 06:30:45,707 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 13 [2023-02-18 06:30:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:45,707 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2023-02-18 06:30:45,707 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) [2023-02-18 06:30:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2023-02-18 06:30:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 06:30:45,708 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:45,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 06:30:45,709 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)] === [2023-02-18 06:30:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 763856049, now seen corresponding path program 1 times [2023-02-18 06:30:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:45,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105592734] [2023-02-18 06:30:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:45,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:45,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105592734] [2023-02-18 06:30:45,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105592734] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:45,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:45,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:30:45,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062839583] [2023-02-18 06:30:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:45,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:30:45,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:30:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:30:45,860 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) [2023-02-18 06:30:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:45,945 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2023-02-18 06:30:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 06:30:45,945 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 [2023-02-18 06:30:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:45,946 INFO L225 Difference]: With dead ends: 114 [2023-02-18 06:30:45,949 INFO L226 Difference]: Without dead ends: 114 [2023-02-18 06:30:45,949 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 [2023-02-18 06:30:45,950 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 [2023-02-18 06:30:45,951 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] [2023-02-18 06:30:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-02-18 06:30:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-02-18 06:30:45,953 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) [2023-02-18 06:30:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2023-02-18 06:30:45,954 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 13 [2023-02-18 06:30:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:45,954 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2023-02-18 06:30:45,954 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) [2023-02-18 06:30:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2023-02-18 06:30:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 06:30:45,956 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:45,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 06:30:45,957 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)] === [2023-02-18 06:30:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2113337263, now seen corresponding path program 1 times [2023-02-18 06:30:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:45,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872480574] [2023-02-18 06:30:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:46,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:46,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872480574] [2023-02-18 06:30:46,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872480574] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:46,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:46,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 06:30:46,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105518290] [2023-02-18 06:30:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:46,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 06:30:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:46,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 06:30:46,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 06:30:46,038 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) [2023-02-18 06:30:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:46,132 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2023-02-18 06:30:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 06:30:46,133 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 [2023-02-18 06:30:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:46,133 INFO L225 Difference]: With dead ends: 125 [2023-02-18 06:30:46,134 INFO L226 Difference]: Without dead ends: 125 [2023-02-18 06:30:46,134 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 [2023-02-18 06:30:46,134 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 [2023-02-18 06:30:46,135 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] [2023-02-18 06:30:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-18 06:30:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2023-02-18 06:30:46,137 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) [2023-02-18 06:30:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2023-02-18 06:30:46,138 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 14 [2023-02-18 06:30:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:46,138 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2023-02-18 06:30:46,138 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) [2023-02-18 06:30:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2023-02-18 06:30:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:30:46,139 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:46,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:30:46,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 06:30:46,139 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)] === [2023-02-18 06:30:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1298827700, now seen corresponding path program 1 times [2023-02-18 06:30:46,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:46,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068501626] [2023-02-18 06:30:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:46,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068501626] [2023-02-18 06:30:46,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068501626] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:46,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:46,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:30:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695750177] [2023-02-18 06:30:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:46,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:30:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:30:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:30:46,204 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) [2023-02-18 06:30:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:46,272 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2023-02-18 06:30:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:30:46,272 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 [2023-02-18 06:30:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:46,273 INFO L225 Difference]: With dead ends: 168 [2023-02-18 06:30:46,273 INFO L226 Difference]: Without dead ends: 168 [2023-02-18 06:30:46,274 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 [2023-02-18 06:30:46,274 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 167 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-18 06:30:46,275 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] [2023-02-18 06:30:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-18 06:30:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 110. [2023-02-18 06:30:46,277 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) [2023-02-18 06:30:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2023-02-18 06:30:46,278 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 16 [2023-02-18 06:30:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:46,278 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2023-02-18 06:30:46,278 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) [2023-02-18 06:30:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2023-02-18 06:30:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 06:30:46,279 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:46,279 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] [2023-02-18 06:30:46,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 06:30:46,279 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)] === [2023-02-18 06:30:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1685750883, now seen corresponding path program 1 times [2023-02-18 06:30:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:46,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592276098] [2023-02-18 06:30:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:46,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:46,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592276098] [2023-02-18 06:30:46,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592276098] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:46,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:46,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:30:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109623870] [2023-02-18 06:30:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:46,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:30:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:30:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:30:46,323 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) [2023-02-18 06:30:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:46,399 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2023-02-18 06:30:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:30:46,399 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 [2023-02-18 06:30:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:46,400 INFO L225 Difference]: With dead ends: 108 [2023-02-18 06:30:46,400 INFO L226 Difference]: Without dead ends: 108 [2023-02-18 06:30:46,400 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 [2023-02-18 06:30:46,401 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 [2023-02-18 06:30:46,402 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] [2023-02-18 06:30:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-18 06:30:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-02-18 06:30:46,404 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) [2023-02-18 06:30:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2023-02-18 06:30:46,404 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 21 [2023-02-18 06:30:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:46,405 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2023-02-18 06:30:46,405 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) [2023-02-18 06:30:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2023-02-18 06:30:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 06:30:46,407 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:46,407 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] [2023-02-18 06:30:46,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 06:30:46,407 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)] === [2023-02-18 06:30:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1685783654, now seen corresponding path program 1 times [2023-02-18 06:30:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849274633] [2023-02-18 06:30:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:46,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:46,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849274633] [2023-02-18 06:30:46,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849274633] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:46,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:46,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-18 06:30:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494676371] [2023-02-18 06:30:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:46,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 06:30:46,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 06:30:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-02-18 06:30:46,861 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) [2023-02-18 06:30:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:47,249 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2023-02-18 06:30:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 06:30:47,250 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 [2023-02-18 06:30:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:47,251 INFO L225 Difference]: With dead ends: 215 [2023-02-18 06:30:47,251 INFO L226 Difference]: Without dead ends: 215 [2023-02-18 06:30:47,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-02-18 06:30:47,252 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 289 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:30:47,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 415 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:30:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-02-18 06:30:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 121. [2023-02-18 06:30:47,254 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) [2023-02-18 06:30:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2023-02-18 06:30:47,255 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 21 [2023-02-18 06:30:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:47,255 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2023-02-18 06:30:47,255 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) [2023-02-18 06:30:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2023-02-18 06:30:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 06:30:47,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:47,256 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] [2023-02-18 06:30:47,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 06:30:47,256 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)] === [2023-02-18 06:30:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash -843990961, now seen corresponding path program 1 times [2023-02-18 06:30:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75678784] [2023-02-18 06:30:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:47,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75678784] [2023-02-18 06:30:47,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75678784] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:47,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:47,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 06:30:47,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804071357] [2023-02-18 06:30:47,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:47,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 06:30:47,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 06:30:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-18 06:30:47,435 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) [2023-02-18 06:30:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:47,713 INFO L93 Difference]: Finished difference Result 172 states and 177 transitions. [2023-02-18 06:30:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 06:30:47,713 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 [2023-02-18 06:30:47,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:47,714 INFO L225 Difference]: With dead ends: 172 [2023-02-18 06:30:47,714 INFO L226 Difference]: Without dead ends: 172 [2023-02-18 06:30:47,715 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 [2023-02-18 06:30:47,715 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 222 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-18 06:30:47,715 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] [2023-02-18 06:30:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-02-18 06:30:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 127. [2023-02-18 06:30:47,718 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) [2023-02-18 06:30:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2023-02-18 06:30:47,718 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 24 [2023-02-18 06:30:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:47,718 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2023-02-18 06:30:47,718 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) [2023-02-18 06:30:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2023-02-18 06:30:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 06:30:47,719 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:47,719 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] [2023-02-18 06:30:47,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 06:30:47,719 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)] === [2023-02-18 06:30:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash -843990960, now seen corresponding path program 1 times [2023-02-18 06:30:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:47,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170106140] [2023-02-18 06:30:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170106140] [2023-02-18 06:30:47,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170106140] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:47,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:47,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 06:30:47,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228893634] [2023-02-18 06:30:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:47,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 06:30:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 06:30:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-18 06:30:47,963 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) [2023-02-18 06:30:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:48,306 INFO L93 Difference]: Finished difference Result 204 states and 208 transitions. [2023-02-18 06:30:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 06:30:48,307 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 [2023-02-18 06:30:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:48,308 INFO L225 Difference]: With dead ends: 204 [2023-02-18 06:30:48,308 INFO L226 Difference]: Without dead ends: 204 [2023-02-18 06:30:48,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-02-18 06:30:48,308 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, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:30:48,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 318 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:30:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-18 06:30:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2023-02-18 06:30:48,311 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) [2023-02-18 06:30:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2023-02-18 06:30:48,311 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 24 [2023-02-18 06:30:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:48,311 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2023-02-18 06:30:48,311 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) [2023-02-18 06:30:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2023-02-18 06:30:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 06:30:48,312 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:48,312 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] [2023-02-18 06:30:48,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 06:30:48,312 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)] === [2023-02-18 06:30:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash 673509455, now seen corresponding path program 1 times [2023-02-18 06:30:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288387507] [2023-02-18 06:30:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:48,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288387507] [2023-02-18 06:30:48,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288387507] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:48,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:48,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-18 06:30:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963550576] [2023-02-18 06:30:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:48,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 06:30:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 06:30:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 06:30:48,764 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) [2023-02-18 06:30:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:49,122 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2023-02-18 06:30:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 06:30:49,123 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 [2023-02-18 06:30:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:49,123 INFO L225 Difference]: With dead ends: 202 [2023-02-18 06:30:49,124 INFO L226 Difference]: Without dead ends: 202 [2023-02-18 06:30:49,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-02-18 06:30:49,124 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, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 06:30:49,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 397 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 06:30:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-02-18 06:30:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2023-02-18 06:30:49,127 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) [2023-02-18 06:30:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2023-02-18 06:30:49,127 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 26 [2023-02-18 06:30:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:49,128 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2023-02-18 06:30:49,128 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) [2023-02-18 06:30:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2023-02-18 06:30:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 06:30:49,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:49,129 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] [2023-02-18 06:30:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 06:30:49,129 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)] === [2023-02-18 06:30:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:49,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1451405621, now seen corresponding path program 1 times [2023-02-18 06:30:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:49,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783010234] [2023-02-18 06:30:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:49,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:49,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783010234] [2023-02-18 06:30:49,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783010234] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:30:49,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454171566] [2023-02-18 06:30:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:49,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:30:49,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:30:49,589 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) [2023-02-18 06:30:49,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 06:30:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:49,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-18 06:30:49,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:30:49,753 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 [2023-02-18 06:30:49,773 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 [2023-02-18 06:30:49,800 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:49,801 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 15 [2023-02-18 06:30:49,831 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 [2023-02-18 06:30:49,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:30:49,837 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 45 treesize of output 44 [2023-02-18 06:30:49,876 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 [2023-02-18 06:30:49,927 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 20 treesize of output 22 [2023-02-18 06:30:49,941 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 20 treesize of output 22 [2023-02-18 06:30:49,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:49,949 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 15 [2023-02-18 06:30:49,961 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 [2023-02-18 06:30:49,965 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 20 treesize of output 22 [2023-02-18 06:30:49,991 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 [2023-02-18 06:30:50,005 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 20 treesize of output 22 [2023-02-18 06:30:50,021 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 28 treesize of output 16 [2023-02-18 06:30:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:50,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:30:50,052 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 [2023-02-18 06:30:50,108 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_471 (Array Int Int)) (v_ArrVal_473 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_471) |c_ULTIMATE.start_main_#t~malloc5#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 [2023-02-18 06:30:50,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:50,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2023-02-18 06:30:51,042 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 (not (>= |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_51|)) (= |v_ULTIMATE.start_main_#t~malloc5#1.base_6| |c_ULTIMATE.start_main_~head~0#1.base|) (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 [2023-02-18 06:30:51,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:30:51,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:51,054 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 [2023-02-18 06:30:51,058 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 06:30:51,061 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 [2023-02-18 06:30:51,063 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 [2023-02-18 06:30:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:51,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454171566] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:30:51,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:30:51,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2023-02-18 06:30:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615820816] [2023-02-18 06:30:51,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:30:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-18 06:30:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-18 06:30:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=520, Unknown=21, NotChecked=150, Total=812 [2023-02-18 06:30:51,087 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) [2023-02-18 06:30:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:52,196 INFO L93 Difference]: Finished difference Result 255 states and 265 transitions. [2023-02-18 06:30:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 06:30:52,197 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 [2023-02-18 06:30:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:52,198 INFO L225 Difference]: With dead ends: 255 [2023-02-18 06:30:52,198 INFO L226 Difference]: Without dead ends: 255 [2023-02-18 06:30:52,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 42 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=344, Invalid=1285, Unknown=23, NotChecked=240, Total=1892 [2023-02-18 06:30:52,199 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 371 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 535 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 06:30:52,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 889 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1228 Invalid, 0 Unknown, 535 Unchecked, 0.8s Time] [2023-02-18 06:30:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-02-18 06:30:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 150. [2023-02-18 06:30:52,202 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) [2023-02-18 06:30:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2023-02-18 06:30:52,203 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 30 [2023-02-18 06:30:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:52,203 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2023-02-18 06:30:52,203 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) [2023-02-18 06:30:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2023-02-18 06:30:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 06:30:52,204 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:52,204 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] [2023-02-18 06:30:52,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 06:30:52,404 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 [2023-02-18 06:30:52,405 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)] === [2023-02-18 06:30:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash -472325846, now seen corresponding path program 1 times [2023-02-18 06:30:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850425866] [2023-02-18 06:30:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:52,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:52,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850425866] [2023-02-18 06:30:52,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850425866] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:52,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:52,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 06:30:52,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930297398] [2023-02-18 06:30:52,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:52,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:30:52,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:52,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:30:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:30:52,458 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) [2023-02-18 06:30:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:52,546 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2023-02-18 06:30:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:30:52,546 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 [2023-02-18 06:30:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:52,547 INFO L225 Difference]: With dead ends: 148 [2023-02-18 06:30:52,547 INFO L226 Difference]: Without dead ends: 148 [2023-02-18 06:30:52,547 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 [2023-02-18 06:30:52,548 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 22 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-18 06:30:52,548 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] [2023-02-18 06:30:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-18 06:30:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-02-18 06:30:52,550 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) [2023-02-18 06:30:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2023-02-18 06:30:52,551 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 32 [2023-02-18 06:30:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:52,551 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2023-02-18 06:30:52,551 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) [2023-02-18 06:30:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2023-02-18 06:30:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 06:30:52,551 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:52,552 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] [2023-02-18 06:30:52,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 06:30:52,552 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)] === [2023-02-18 06:30:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1755815806, now seen corresponding path program 1 times [2023-02-18 06:30:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:52,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910012659] [2023-02-18 06:30:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:52,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910012659] [2023-02-18 06:30:52,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910012659] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:30:52,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:30:52,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 06:30:52,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703787755] [2023-02-18 06:30:52,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:30:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:30:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:30:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:30:52,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:30:52,645 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) [2023-02-18 06:30:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:30:52,734 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2023-02-18 06:30:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:30:52,734 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 [2023-02-18 06:30:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:30:52,735 INFO L225 Difference]: With dead ends: 157 [2023-02-18 06:30:52,735 INFO L226 Difference]: Without dead ends: 157 [2023-02-18 06:30:52,736 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 [2023-02-18 06:30:52,736 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 [2023-02-18 06:30:52,736 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] [2023-02-18 06:30:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-18 06:30:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2023-02-18 06:30:52,738 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) [2023-02-18 06:30:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2023-02-18 06:30:52,739 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 33 [2023-02-18 06:30:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:30:52,739 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2023-02-18 06:30:52,739 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) [2023-02-18 06:30:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2023-02-18 06:30:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 06:30:52,740 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:30:52,740 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] [2023-02-18 06:30:52,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 06:30:52,741 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)] === [2023-02-18 06:30:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:30:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash 416851232, now seen corresponding path program 1 times [2023-02-18 06:30:52,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:30:52,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467426348] [2023-02-18 06:30:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:52,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:30:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:30:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:30:53,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467426348] [2023-02-18 06:30:53,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467426348] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:30:53,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868005134] [2023-02-18 06:30:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:30:53,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:30:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:30:53,064 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) [2023-02-18 06:30:53,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 06:30:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:30:53,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-18 06:30:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:30:53,191 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 [2023-02-18 06:30:53,219 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,220 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 15 [2023-02-18 06:30:53,240 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 [2023-02-18 06:30:53,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,295 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 36 [2023-02-18 06:30:53,306 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 12 treesize of output 8 [2023-02-18 06:30:53,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,331 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 36 [2023-02-18 06:30:53,335 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 12 treesize of output 8 [2023-02-18 06:30:53,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 06:30:53,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,384 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 46 [2023-02-18 06:30:53,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,473 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 124 [2023-02-18 06:30:53,543 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 14 treesize of output 10 [2023-02-18 06:30:53,545 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 06:30:53,547 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 06:30:53,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:30:53,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 19 new quantified variables, introduced 45 case distinctions, treesize of input 611 treesize of output 696