./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/dll2n_prepend_equal.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/list-simple/dll2n_prepend_equal.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 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 06:44:17,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 06:44:17,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 06:44:17,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 06:44:17,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 06:44:17,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 06:44:17,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 06:44:17,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 06:44:17,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 06:44:17,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 06:44:17,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 06:44:17,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 06:44:17,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 06:44:17,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 06:44:17,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 06:44:17,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 06:44:17,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 06:44:17,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 06:44:17,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 06:44:17,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 06:44:17,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 06:44:17,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 06:44:17,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 06:44:17,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 06:44:17,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 06:44:17,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 06:44:17,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 06:44:18,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 06:44:18,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 06:44:18,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 06:44:18,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 06:44:18,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 06:44:18,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 06:44:18,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 06:44:18,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 06:44:18,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 06:44:18,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 06:44:18,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 06:44:18,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 06:44:18,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 06:44:18,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 06:44:18,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 06:44:18,028 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 06:44:18,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 06:44:18,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 06:44:18,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 06:44:18,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 06:44:18,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 06:44:18,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 06:44:18,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 06:44:18,030 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 06:44:18,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 06:44:18,031 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 06:44:18,031 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 06:44:18,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 06:44:18,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 06:44:18,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 06:44:18,032 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 06:44:18,032 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 06:44:18,032 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 06:44:18,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 06:44:18,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 06:44:18,033 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 06:44:18,033 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 06:44:18,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 06:44:18,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 06:44:18,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 06:44:18,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:44:18,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 06:44:18,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 06:44:18,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 06:44:18,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 06:44:18,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 06:44:18,035 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 06:44:18,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 06:44:18,035 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 06:44:18,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2023-02-18 06:44:18,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 06:44:18,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 06:44:18,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 06:44:18,240 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 06:44:18,240 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 06:44:18,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-02-18 06:44:19,306 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 06:44:19,506 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 06:44:19,506 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-02-18 06:44:19,515 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b7ccd90/5e14bffb0a3f4187bad1168ece9e9679/FLAG905daaf30 [2023-02-18 06:44:19,525 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87b7ccd90/5e14bffb0a3f4187bad1168ece9e9679 [2023-02-18 06:44:19,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 06:44:19,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 06:44:19,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 06:44:19,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 06:44:19,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 06:44:19,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37815a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19, skipping insertion in model container [2023-02-18 06:44:19,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 06:44:19,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 06:44:19,773 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/list-simple/dll2n_prepend_equal.i[24361,24374] [2023-02-18 06:44:19,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:44:19,787 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 06:44:19,838 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/list-simple/dll2n_prepend_equal.i[24361,24374] [2023-02-18 06:44:19,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 06:44:19,862 INFO L208 MainTranslator]: Completed translation [2023-02-18 06:44:19,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19 WrapperNode [2023-02-18 06:44:19,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 06:44:19,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 06:44:19,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 06:44:19,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 06:44:19,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,920 INFO L138 Inliner]: procedures = 127, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2023-02-18 06:44:19,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 06:44:19,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 06:44:19,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 06:44:19,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 06:44:19,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,954 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 06:44:19,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 06:44:19,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 06:44:19,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 06:44:19,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (1/1) ... [2023-02-18 06:44:19,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 06:44:19,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:20,000 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 06:44:20,032 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 06:44:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-02-18 06:44:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 06:44:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 06:44:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 06:44:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 06:44:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 06:44:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 06:44:20,174 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 06:44:20,176 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 06:44:20,205 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-02-18 06:44:20,392 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 06:44:20,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 06:44:20,397 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 06:44:20,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:44:20 BoogieIcfgContainer [2023-02-18 06:44:20,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 06:44:20,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 06:44:20,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 06:44:20,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 06:44:20,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 06:44:19" (1/3) ... [2023-02-18 06:44:20,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f460cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:44:20, skipping insertion in model container [2023-02-18 06:44:20,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 06:44:19" (2/3) ... [2023-02-18 06:44:20,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f460cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 06:44:20, skipping insertion in model container [2023-02-18 06:44:20,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 06:44:20" (3/3) ... [2023-02-18 06:44:20,404 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2023-02-18 06:44:20,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 06:44:20,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2023-02-18 06:44:20,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 06:44:20,445 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;@1d583e42, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 06:44:20,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-02-18 06:44:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 50 states have (on average 2.06) internal successors, (103), 92 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 06:44:20,452 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:20,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 06:44:20,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash 33471376, now seen corresponding path program 1 times [2023-02-18 06:44:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:20,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706938574] [2023-02-18 06:44:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:20,611 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 06:44:20,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706938574] [2023-02-18 06:44:20,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706938574] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:20,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:20,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:44:20,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888055597] [2023-02-18 06:44:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:20,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:44:20,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:44:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:44:20,655 INFO L87 Difference]: Start difference. First operand has 94 states, 50 states have (on average 2.06) internal successors, (103), 92 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 06:44:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:20,769 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2023-02-18 06:44:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:44:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-02-18 06:44:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:20,775 INFO L225 Difference]: With dead ends: 161 [2023-02-18 06:44:20,776 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 06:44:20,777 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 06:44:20,779 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 84 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:20,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 176 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 06:44:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 85. [2023-02-18 06:44:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 84 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-02-18 06:44:20,805 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 5 [2023-02-18 06:44:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:20,805 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-02-18 06:44:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 06:44:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-02-18 06:44:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 06:44:20,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:20,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 06:44:20,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 06:44:20,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash 33471377, now seen corresponding path program 1 times [2023-02-18 06:44:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:20,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442602193] [2023-02-18 06:44:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:20,884 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 06:44:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:20,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442602193] [2023-02-18 06:44:20,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442602193] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:20,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:20,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:44:20,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366214832] [2023-02-18 06:44:20,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:44:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:44:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:44:20,888 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 06:44:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:20,978 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2023-02-18 06:44:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:44:20,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-02-18 06:44:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:20,981 INFO L225 Difference]: With dead ends: 153 [2023-02-18 06:44:20,982 INFO L226 Difference]: Without dead ends: 153 [2023-02-18 06:44:20,984 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 06:44:20,986 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 82 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:20,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 170 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:20,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-18 06:44:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 82. [2023-02-18 06:44:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.851063829787234) internal successors, (87), 81 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2023-02-18 06:44:21,002 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 5 [2023-02-18 06:44:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:21,002 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2023-02-18 06:44:21,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 06:44:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2023-02-18 06:44:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 06:44:21,005 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:21,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:21,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 06:44:21,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2100113040, now seen corresponding path program 1 times [2023-02-18 06:44:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:21,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477086578] [2023-02-18 06:44:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:21,052 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 06:44:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477086578] [2023-02-18 06:44:21,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477086578] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:21,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:21,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 06:44:21,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519269550] [2023-02-18 06:44:21,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:21,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:44:21,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:44:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:44:21,055 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 06:44:21,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:21,064 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-02-18 06:44:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:44:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-02-18 06:44:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:21,066 INFO L225 Difference]: With dead ends: 92 [2023-02-18 06:44:21,066 INFO L226 Difference]: Without dead ends: 92 [2023-02-18 06:44:21,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:44:21,067 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:21,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 168 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:21,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-18 06:44:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2023-02-18 06:44:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 82 states have internal predecessors, (88), 0 states have call successors, (0), 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 06:44:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2023-02-18 06:44:21,074 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 7 [2023-02-18 06:44:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:21,074 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2023-02-18 06:44:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 06:44:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2023-02-18 06:44:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 06:44:21,076 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:21,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:21,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 06:44:21,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 638916372, now seen corresponding path program 1 times [2023-02-18 06:44:21,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:21,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133853360] [2023-02-18 06:44:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:21,141 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 06:44:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:21,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133853360] [2023-02-18 06:44:21,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133853360] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:21,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:21,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 06:44:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375187408] [2023-02-18 06:44:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:44:21,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:44:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:44:21,144 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 06:44:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:21,157 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2023-02-18 06:44:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:44:21,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-02-18 06:44:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:21,158 INFO L225 Difference]: With dead ends: 89 [2023-02-18 06:44:21,158 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 06:44:21,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:44:21,159 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:21,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 163 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 06:44:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2023-02-18 06:44:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2023-02-18 06:44:21,168 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 9 [2023-02-18 06:44:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2023-02-18 06:44:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 06:44:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2023-02-18 06:44:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 06:44:21,169 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:21,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:21,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 06:44:21,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -763066913, now seen corresponding path program 1 times [2023-02-18 06:44:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:21,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944698961] [2023-02-18 06:44:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:21,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:21,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944698961] [2023-02-18 06:44:21,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944698961] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494450220] [2023-02-18 06:44:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:21,251 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 06:44:21,252 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 06:44:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:21,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 06:44:21,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:21,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:44:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:21,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494450220] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:44:21,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:44:21,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-02-18 06:44:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769760432] [2023-02-18 06:44:21,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:44:21,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:44:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:44:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:44:21,383 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:21,392 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2023-02-18 06:44:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:44:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:21,393 INFO L225 Difference]: With dead ends: 90 [2023-02-18 06:44:21,393 INFO L226 Difference]: Without dead ends: 90 [2023-02-18 06:44:21,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:44:21,394 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 177 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-18 06:44:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-02-18 06:44:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2023-02-18 06:44:21,397 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 14 [2023-02-18 06:44:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:21,397 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2023-02-18 06:44:21,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2023-02-18 06:44:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:44:21,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:21,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:21,420 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 06:44:21,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:21,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949021, now seen corresponding path program 1 times [2023-02-18 06:44:21,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:21,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091288611] [2023-02-18 06:44:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:21,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:21,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091288611] [2023-02-18 06:44:21,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091288611] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656153004] [2023-02-18 06:44:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:21,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:21,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:21,741 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 06:44:21,773 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 06:44:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:21,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 06:44:21,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:21,886 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 06:44:21,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:21,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 06:44:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:21,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:44:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:21,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656153004] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:44:21,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:44:21,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2023-02-18 06:44:21,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620872587] [2023-02-18 06:44:21,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:44:21,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 06:44:21,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 06:44:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:44:21,985 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:44:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:22,084 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2023-02-18 06:44:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:44:22,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:44:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:22,085 INFO L225 Difference]: With dead ends: 101 [2023-02-18 06:44:22,085 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 06:44:22,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:44:22,086 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 147 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:22,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 85 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 06:44:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2023-02-18 06:44:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.709090909090909) internal successors, (94), 88 states have internal predecessors, (94), 0 states have call successors, (0), 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 06:44:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2023-02-18 06:44:22,093 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 16 [2023-02-18 06:44:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:22,093 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2023-02-18 06:44:22,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:44:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2023-02-18 06:44:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 06:44:22,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:22,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:22,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 06:44:22,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-18 06:44:22,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949020, now seen corresponding path program 1 times [2023-02-18 06:44:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:22,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758742080] [2023-02-18 06:44:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:22,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758742080] [2023-02-18 06:44:22,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758742080] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:22,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724250391] [2023-02-18 06:44:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:22,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:22,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:44:22,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 06:44:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:22,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 06:44:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:22,561 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 06:44:22,563 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 06:44:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:22,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 06:44:22,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:22,578 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 06:44:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:22,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:44:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:22,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724250391] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:44:22,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:44:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2023-02-18 06:44:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685376870] [2023-02-18 06:44:22,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:44:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 06:44:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 06:44:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:44:22,650 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:22,759 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2023-02-18 06:44:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:44:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 06:44:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:22,760 INFO L225 Difference]: With dead ends: 100 [2023-02-18 06:44:22,760 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 06:44:22,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-02-18 06:44:22,761 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 490 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:22,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 60 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 06:44:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2023-02-18 06:44:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 55 states have (on average 1.690909090909091) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2023-02-18 06:44:22,763 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 16 [2023-02-18 06:44:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:22,764 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2023-02-18 06:44:22,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2023-02-18 06:44:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 06:44:22,764 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:22,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:22,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 06:44:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:22,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957328, now seen corresponding path program 2 times [2023-02-18 06:44:22,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:22,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619093100] [2023-02-18 06:44:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:22,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:23,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:23,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619093100] [2023-02-18 06:44:23,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619093100] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:23,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575552093] [2023-02-18 06:44:23,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 06:44:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:23,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:23,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:44:23,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 06:44:23,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 06:44:23,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 06:44:23,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 06:44:23,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:23,077 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 06:44:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:23,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 06:44:23,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575552093] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:23,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 06:44:23,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-02-18 06:44:23,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935978242] [2023-02-18 06:44:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:23,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:44:23,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:23,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:44:23,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:44:23,081 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 06:44:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:23,149 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2023-02-18 06:44:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:44:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 21 [2023-02-18 06:44:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:23,150 INFO L225 Difference]: With dead ends: 97 [2023-02-18 06:44:23,150 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 06:44:23,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:44:23,150 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 64 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:23,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 63 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 06:44:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2023-02-18 06:44:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 84 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-02-18 06:44:23,153 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 21 [2023-02-18 06:44:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:23,153 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-02-18 06:44:23,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 06:44:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-02-18 06:44:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 06:44:23,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:23,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:23,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 06:44:23,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:23,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957327, now seen corresponding path program 1 times [2023-02-18 06:44:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:23,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768915985] [2023-02-18 06:44:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:23,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768915985] [2023-02-18 06:44:23,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768915985] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461735435] [2023-02-18 06:44:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:23,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:23,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:23,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:44:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 06:44:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:23,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 06:44:23,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:23,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:44:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:23,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461735435] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:44:23,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:44:23,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-02-18 06:44:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655047800] [2023-02-18 06:44:23,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:44:23,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:44:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:44:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 06:44:23,580 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 06:44:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:23,600 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2023-02-18 06:44:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 06:44:23,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 06:44:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:23,601 INFO L225 Difference]: With dead ends: 85 [2023-02-18 06:44:23,602 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 06:44:23,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 06:44:23,603 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 147 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:23,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 78 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 06:44:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-18 06:44:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.6181818181818182) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2023-02-18 06:44:23,608 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 21 [2023-02-18 06:44:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:23,608 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2023-02-18 06:44:23,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 06:44:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2023-02-18 06:44:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 06:44:23,609 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:23,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:23,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 06:44:23,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:23,814 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:23,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2020822092, now seen corresponding path program 1 times [2023-02-18 06:44:23,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:23,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433857829] [2023-02-18 06:44:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:23,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:23,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433857829] [2023-02-18 06:44:23,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433857829] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:23,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:23,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 06:44:23,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201653351] [2023-02-18 06:44:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:23,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 06:44:23,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 06:44:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 06:44:23,888 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 06:44:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:23,918 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2023-02-18 06:44:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 06:44:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 22 [2023-02-18 06:44:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:23,919 INFO L225 Difference]: With dead ends: 82 [2023-02-18 06:44:23,919 INFO L226 Difference]: Without dead ends: 82 [2023-02-18 06:44:23,919 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 06:44:23,920 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:23,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-18 06:44:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-18 06:44:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 06:44:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2023-02-18 06:44:23,922 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 22 [2023-02-18 06:44:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:23,923 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2023-02-18 06:44:23,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 06:44:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2023-02-18 06:44:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 06:44:23,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:23,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 06:44:23,925 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash 157247510, now seen corresponding path program 1 times [2023-02-18 06:44:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:23,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643054621] [2023-02-18 06:44:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:23,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:44:24,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:24,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643054621] [2023-02-18 06:44:24,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643054621] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:24,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993237870] [2023-02-18 06:44:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:24,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:24,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:44:24,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 06:44:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:24,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 06:44:24,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:24,306 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 06:44:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:24,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 06:44:24,316 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:24,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-18 06:44:24,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:24,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-18 06:44:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 06:44:24,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 06:44:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 06:44:24,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993237870] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 06:44:24,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 06:44:24,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 8 [2023-02-18 06:44:24,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36760675] [2023-02-18 06:44:24,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 06:44:24,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 06:44:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 06:44:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:44:24,428 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 06:44:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:24,489 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2023-02-18 06:44:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:44:24,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 27 [2023-02-18 06:44:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:24,490 INFO L225 Difference]: With dead ends: 88 [2023-02-18 06:44:24,490 INFO L226 Difference]: Without dead ends: 88 [2023-02-18 06:44:24,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 19 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:44:24,491 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 290 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:24,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 71 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-18 06:44:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2023-02-18 06:44:24,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 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 06:44:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2023-02-18 06:44:24,492 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 27 [2023-02-18 06:44:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2023-02-18 06:44:24,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 06:44:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2023-02-18 06:44:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 06:44:24,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:24,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:24,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 06:44:24,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:24,694 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 157247511, now seen corresponding path program 1 times [2023-02-18 06:44:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:24,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893534026] [2023-02-18 06:44:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 06:44:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:24,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893534026] [2023-02-18 06:44:24,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893534026] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:24,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560576259] [2023-02-18 06:44:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:24,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:24,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:44:24,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 06:44:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:25,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 06:44:25,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:25,055 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 06:44:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:25,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 06:44:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:25,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 06:44:25,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:25,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 06:44:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:25,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 06:44:25,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560576259] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:25,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 06:44:25,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-02-18 06:44:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48505051] [2023-02-18 06:44:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:25,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 06:44:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 06:44:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:44:25,082 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 06:44:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:25,121 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2023-02-18 06:44:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:44:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 27 [2023-02-18 06:44:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:25,122 INFO L225 Difference]: With dead ends: 70 [2023-02-18 06:44:25,122 INFO L226 Difference]: Without dead ends: 70 [2023-02-18 06:44:25,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:44:25,123 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 98 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:25,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 46 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-18 06:44:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-02-18 06:44:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 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 06:44:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2023-02-18 06:44:25,124 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 27 [2023-02-18 06:44:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:25,125 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2023-02-18 06:44:25,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 06:44:25,125 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2023-02-18 06:44:25,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 06:44:25,125 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:25,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:25,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 06:44:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:25,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash 579705555, now seen corresponding path program 1 times [2023-02-18 06:44:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918963979] [2023-02-18 06:44:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:25,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:25,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918963979] [2023-02-18 06:44:25,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918963979] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:25,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:25,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:44:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678765028] [2023-02-18 06:44:25,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:25,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:44:25,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:44:25,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:44:25,381 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:25,427 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2023-02-18 06:44:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:44:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 28 [2023-02-18 06:44:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:25,428 INFO L225 Difference]: With dead ends: 81 [2023-02-18 06:44:25,428 INFO L226 Difference]: Without dead ends: 81 [2023-02-18 06:44:25,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:44:25,429 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 132 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:25,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 83 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:25,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-18 06:44:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2023-02-18 06:44:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 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 06:44:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-02-18 06:44:25,431 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 28 [2023-02-18 06:44:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:25,431 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-02-18 06:44:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-02-18 06:44:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 06:44:25,432 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:25,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 06:44:25,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash 579705556, now seen corresponding path program 1 times [2023-02-18 06:44:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:25,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951057057] [2023-02-18 06:44:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:25,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:25,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951057057] [2023-02-18 06:44:25,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951057057] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:25,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:25,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 06:44:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643936511] [2023-02-18 06:44:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:25,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 06:44:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:25,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 06:44:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 06:44:25,533 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:25,571 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2023-02-18 06:44:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 06:44:25,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 28 [2023-02-18 06:44:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:25,572 INFO L225 Difference]: With dead ends: 68 [2023-02-18 06:44:25,572 INFO L226 Difference]: Without dead ends: 68 [2023-02-18 06:44:25,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 06:44:25,573 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 137 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:25,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 62 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 06:44:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-18 06:44:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-18 06:44:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.309090909090909) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 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 06:44:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-02-18 06:44:25,575 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 28 [2023-02-18 06:44:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:25,575 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-02-18 06:44:25,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 06:44:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-02-18 06:44:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 06:44:25,576 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:25,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:25,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 06:44:25,576 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558015, now seen corresponding path program 1 times [2023-02-18 06:44:25,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:25,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147011007] [2023-02-18 06:44:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 06:44:25,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:25,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147011007] [2023-02-18 06:44:25,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147011007] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:25,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:25,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 06:44:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308928354] [2023-02-18 06:44:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:25,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 06:44:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 06:44:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-18 06:44:25,781 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:25,938 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2023-02-18 06:44:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 06:44:25,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:25,939 INFO L225 Difference]: With dead ends: 80 [2023-02-18 06:44:25,939 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 06:44:25,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-02-18 06:44:25,940 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 195 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:25,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 161 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 06:44:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2023-02-18 06:44:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.290909090909091) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 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 06:44:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-02-18 06:44:25,941 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 33 [2023-02-18 06:44:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:25,941 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-02-18 06:44:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-02-18 06:44:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 06:44:25,942 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:25,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 06:44:25,942 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558014, now seen corresponding path program 1 times [2023-02-18 06:44:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:25,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654862456] [2023-02-18 06:44:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:44:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:26,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654862456] [2023-02-18 06:44:26,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654862456] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:26,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:26,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 06:44:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678708041] [2023-02-18 06:44:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:26,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 06:44:26,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 06:44:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-18 06:44:26,260 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 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 06:44:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:26,380 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2023-02-18 06:44:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 06:44:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 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 06:44:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:26,380 INFO L225 Difference]: With dead ends: 67 [2023-02-18 06:44:26,380 INFO L226 Difference]: Without dead ends: 67 [2023-02-18 06:44:26,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-02-18 06:44:26,381 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 225 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:26,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 110 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-18 06:44:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-02-18 06:44:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 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 06:44:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-02-18 06:44:26,382 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 33 [2023-02-18 06:44:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:26,382 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-02-18 06:44:26,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 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 06:44:26,383 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-02-18 06:44:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 06:44:26,383 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:26,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 06:44:26,383 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141903, now seen corresponding path program 1 times [2023-02-18 06:44:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:26,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450418831] [2023-02-18 06:44:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:26,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:26,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450418831] [2023-02-18 06:44:26,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450418831] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:26,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:26,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 06:44:26,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161965354] [2023-02-18 06:44:26,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:26,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 06:44:26,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:26,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 06:44:26,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 06:44:26,515 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:26,631 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2023-02-18 06:44:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 06:44:26,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 06:44:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:26,632 INFO L225 Difference]: With dead ends: 97 [2023-02-18 06:44:26,632 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 06:44:26,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-18 06:44:26,633 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 261 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:26,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 145 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 06:44:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 67. [2023-02-18 06:44:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.280701754385965) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 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 06:44:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2023-02-18 06:44:26,635 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 37 [2023-02-18 06:44:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:26,635 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2023-02-18 06:44:26,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2023-02-18 06:44:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 06:44:26,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:26,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:26,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 06:44:26,636 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141904, now seen corresponding path program 1 times [2023-02-18 06:44:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803949989] [2023-02-18 06:44:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803949989] [2023-02-18 06:44:26,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803949989] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:26,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:26,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 06:44:26,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101973012] [2023-02-18 06:44:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:26,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 06:44:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 06:44:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:44:26,843 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:26,968 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2023-02-18 06:44:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 06:44:26,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 06:44:26,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:26,969 INFO L225 Difference]: With dead ends: 89 [2023-02-18 06:44:26,969 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 06:44:26,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-18 06:44:26,970 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 267 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 128 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 06:44:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2023-02-18 06:44:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 68 states have internal predecessors, (74), 0 states have call successors, (0), 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 06:44:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2023-02-18 06:44:26,971 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 37 [2023-02-18 06:44:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:26,972 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2023-02-18 06:44:26,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:44:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2023-02-18 06:44:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 06:44:26,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:26,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:26,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 06:44:26,973 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1835692060, now seen corresponding path program 1 times [2023-02-18 06:44:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:26,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067284531] [2023-02-18 06:44:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:26,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 06:44:27,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:27,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067284531] [2023-02-18 06:44:27,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067284531] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:27,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:27,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 06:44:27,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772062492] [2023-02-18 06:44:27,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:27,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 06:44:27,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 06:44:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 06:44:27,082 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 06:44:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:27,158 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2023-02-18 06:44:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 06:44:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 38 [2023-02-18 06:44:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:27,159 INFO L225 Difference]: With dead ends: 72 [2023-02-18 06:44:27,159 INFO L226 Difference]: Without dead ends: 72 [2023-02-18 06:44:27,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-18 06:44:27,159 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 181 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:27,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 171 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-18 06:44:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2023-02-18 06:44:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 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 06:44:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-02-18 06:44:27,161 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 38 [2023-02-18 06:44:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:27,161 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-02-18 06:44:27,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 06:44:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-02-18 06:44:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 06:44:27,161 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:27,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:27,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-18 06:44:27,162 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:27,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash -676090250, now seen corresponding path program 1 times [2023-02-18 06:44:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:27,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125924071] [2023-02-18 06:44:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 06:44:27,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:27,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125924071] [2023-02-18 06:44:27,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125924071] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:27,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:27,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 06:44:27,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640862929] [2023-02-18 06:44:27,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:27,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 06:44:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 06:44:27,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-18 06:44:27,380 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 06:44:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:27,528 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2023-02-18 06:44:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 06:44:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-02-18 06:44:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:27,528 INFO L225 Difference]: With dead ends: 69 [2023-02-18 06:44:27,529 INFO L226 Difference]: Without dead ends: 69 [2023-02-18 06:44:27,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-02-18 06:44:27,529 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 166 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:27,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 157 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 06:44:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-18 06:44:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-02-18 06:44:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 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 06:44:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2023-02-18 06:44:27,530 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 41 [2023-02-18 06:44:27,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:27,531 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2023-02-18 06:44:27,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 06:44:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2023-02-18 06:44:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 06:44:27,531 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:27,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:27,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-18 06:44:27,531 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2066036839, now seen corresponding path program 1 times [2023-02-18 06:44:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:27,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608716121] [2023-02-18 06:44:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 06:44:28,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:28,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608716121] [2023-02-18 06:44:28,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608716121] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 06:44:28,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 06:44:28,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-02-18 06:44:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527615321] [2023-02-18 06:44:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 06:44:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 06:44:28,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 06:44:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 06:44:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-02-18 06:44:28,097 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 06:44:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 06:44:28,526 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2023-02-18 06:44:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-18 06:44:28,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 44 [2023-02-18 06:44:28,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 06:44:28,527 INFO L225 Difference]: With dead ends: 82 [2023-02-18 06:44:28,527 INFO L226 Difference]: Without dead ends: 82 [2023-02-18 06:44:28,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2023-02-18 06:44:28,529 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 287 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 06:44:28,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 208 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 06:44:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-18 06:44:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2023-02-18 06:44:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 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 06:44:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2023-02-18 06:44:28,531 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 44 [2023-02-18 06:44:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 06:44:28,531 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2023-02-18 06:44:28,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 06:44:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2023-02-18 06:44:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 06:44:28,532 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 06:44:28,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 06:44:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-18 06:44:28,532 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 06:44:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 06:44:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -377366918, now seen corresponding path program 1 times [2023-02-18 06:44:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 06:44:28,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747178253] [2023-02-18 06:44:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:28,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 06:44:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 06:44:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 06:44:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747178253] [2023-02-18 06:44:29,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747178253] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 06:44:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116827570] [2023-02-18 06:44:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 06:44:29,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 06:44:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 06:44:29,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 06:44:29,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 06:44:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 06:44:29,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-18 06:44:29,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 06:44:29,511 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 06:44:29,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:29,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2023-02-18 06:44:29,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,610 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 15 treesize of output 17 [2023-02-18 06:44:29,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,615 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 15 treesize of output 17 [2023-02-18 06:44:29,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,620 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 15 treesize of output 17 [2023-02-18 06:44:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-02-18 06:44:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:29,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 71 [2023-02-18 06:44:29,791 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 06:44:29,795 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-02-18 06:44:29,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:29,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 126 [2023-02-18 06:44:29,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-02-18 06:44:29,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 06:44:29,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 1 [2023-02-18 06:44:29,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 53 [2023-02-18 06:44:29,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-02-18 06:44:29,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 06:44:30,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-18 06:44:30,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 06:44:30,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 51 new quantified variables, introduced 528 case distinctions, treesize of input 953 treesize of output 4895