./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.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 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 16:55:02,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 16:55:02,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 16:55:02,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 16:55:02,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 16:55:02,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 16:55:02,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 16:55:02,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 16:55:02,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 16:55:02,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 16:55:02,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 16:55:02,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 16:55:02,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 16:55:02,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 16:55:02,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 16:55:02,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 16:55:02,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 16:55:02,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 16:55:02,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 16:55:02,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 16:55:02,922 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 16:55:02,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 16:55:02,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 16:55:02,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 16:55:02,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 16:55:02,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 16:55:02,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 16:55:02,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 16:55:02,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 16:55:02,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 16:55:02,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 16:55:02,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 16:55:02,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 16:55:02,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 16:55:02,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 16:55:02,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 16:55:02,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 16:55:02,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 16:55:02,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 16:55:02,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 16:55:02,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 16:55:02,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 16:55:02,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 16:55:02,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 16:55:02,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 16:55:02,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 16:55:02,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 16:55:02,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 16:55:02,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 16:55:02,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 16:55:02,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 16:55:02,983 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 16:55:02,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 16:55:02,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 16:55:02,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 16:55:02,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 16:55:02,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 16:55:02,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 16:55:02,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 16:55:02,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 16:55:02,986 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 16:55:02,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 16:55:02,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 16:55:02,986 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 16:55:02,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 16:55:02,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 16:55:02,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 16:55:02,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 16:55:02,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:55:02,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 16:55:02,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 16:55:02,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 16:55:02,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 16:55:02,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b [2022-07-21 16:55:03,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 16:55:03,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 16:55:03,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 16:55:03,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 16:55:03,317 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 16:55:03,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2022-07-21 16:55:03,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46a5a76c/f28f7e862471477ca80e78d4f4d427c6/FLAG9dfd970d8 [2022-07-21 16:55:03,839 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 16:55:03,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2022-07-21 16:55:03,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46a5a76c/f28f7e862471477ca80e78d4f4d427c6/FLAG9dfd970d8 [2022-07-21 16:55:04,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46a5a76c/f28f7e862471477ca80e78d4f4d427c6 [2022-07-21 16:55:04,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 16:55:04,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 16:55:04,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 16:55:04,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 16:55:04,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 16:55:04,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a22380e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04, skipping insertion in model container [2022-07-21 16:55:04,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 16:55:04,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:55:04,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:55:04,641 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 16:55:04,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:55:04,714 INFO L208 MainTranslator]: Completed translation [2022-07-21 16:55:04,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04 WrapperNode [2022-07-21 16:55:04,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 16:55:04,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 16:55:04,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 16:55:04,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 16:55:04,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,770 INFO L137 Inliner]: procedures = 115, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2022-07-21 16:55:04,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 16:55:04,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 16:55:04,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 16:55:04,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 16:55:04,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 16:55:04,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 16:55:04,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 16:55:04,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 16:55:04,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (1/1) ... [2022-07-21 16:55:04,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:55:04,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:04,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 16:55:04,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 16:55:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 16:55:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 16:55:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 16:55:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 16:55:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 16:55:04,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 16:55:04,996 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 16:55:04,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 16:55:05,217 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 16:55:05,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 16:55:05,222 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 16:55:05,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:05 BoogieIcfgContainer [2022-07-21 16:55:05,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 16:55:05,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 16:55:05,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 16:55:05,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 16:55:05,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:55:04" (1/3) ... [2022-07-21 16:55:05,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cfb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:55:05, skipping insertion in model container [2022-07-21 16:55:05,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:04" (2/3) ... [2022-07-21 16:55:05,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cfb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:55:05, skipping insertion in model container [2022-07-21 16:55:05,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:05" (3/3) ... [2022-07-21 16:55:05,231 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2022-07-21 16:55:05,243 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 16:55:05,243 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-21 16:55:05,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 16:55:05,296 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6668ab59, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5252b60 [2022-07-21 16:55:05,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 16:55:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 16:55:05,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:05,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:05,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash 119383862, now seen corresponding path program 1 times [2022-07-21 16:55:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:05,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532535319] [2022-07-21 16:55:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:05,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:05,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591462526] [2022-07-21 16:55:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:05,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:05,436 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) [2022-07-21 16:55:05,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 16:55:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:05,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 16:55:05,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:05,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532535319] [2022-07-21 16:55:05,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591462526] [2022-07-21 16:55:05,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591462526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:05,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:05,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:55:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437344128] [2022-07-21 16:55:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:55:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:55:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:55:05,619 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:05,658 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-07-21 16:55:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:55:05,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-21 16:55:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:05,666 INFO L225 Difference]: With dead ends: 28 [2022-07-21 16:55:05,667 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 16:55:05,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:05,671 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:05,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:55:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 16:55:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-21 16:55:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-07-21 16:55:05,706 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2022-07-21 16:55:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:05,706 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-07-21 16:55:05,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-07-21 16:55:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 16:55:05,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:05,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:05,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 16:55:05,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 16:55:05,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash -594066643, now seen corresponding path program 1 times [2022-07-21 16:55:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613839203] [2022-07-21 16:55:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:05,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:05,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:05,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463202045] [2022-07-21 16:55:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:05,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:05,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:05,947 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) [2022-07-21 16:55:05,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 16:55:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:06,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 16:55:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:06,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:06,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-21 16:55:06,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-21 16:55:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:06,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:06,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613839203] [2022-07-21 16:55:06,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:06,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463202045] [2022-07-21 16:55:06,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463202045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:06,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:06,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621721200] [2022-07-21 16:55:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:06,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:06,163 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-07-21 16:55:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:06,259 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-07-21 16:55:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:55:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-07-21 16:55:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:06,261 INFO L225 Difference]: With dead ends: 31 [2022-07-21 16:55:06,262 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 16:55:06,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:06,271 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:06,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 28 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:55:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 16:55:06,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-07-21 16:55:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 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) [2022-07-21 16:55:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-07-21 16:55:06,280 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2022-07-21 16:55:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:06,280 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-07-21 16:55:06,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-07-21 16:55:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-07-21 16:55:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 16:55:06,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:06,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:06,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:06,499 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,SelfDestructingSolverStorable1 [2022-07-21 16:55:06,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash -594066644, now seen corresponding path program 1 times [2022-07-21 16:55:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:06,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060752562] [2022-07-21 16:55:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:06,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:06,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:06,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065031843] [2022-07-21 16:55:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:06,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:06,519 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) [2022-07-21 16:55:06,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 16:55:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 16:55:06,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:06,595 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 16:55:06,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-07-21 16:55:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:06,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:06,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060752562] [2022-07-21 16:55:06,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:06,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065031843] [2022-07-21 16:55:06,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065031843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:06,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:06,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:55:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689767572] [2022-07-21 16:55:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:06,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:55:06,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:55:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:06,615 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-07-21 16:55:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:06,637 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-21 16:55:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:55:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-07-21 16:55:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:06,639 INFO L225 Difference]: With dead ends: 26 [2022-07-21 16:55:06,639 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 16:55:06,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:06,645 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:06,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:55:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 16:55:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-21 16:55:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-07-21 16:55:06,657 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2022-07-21 16:55:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:06,658 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-07-21 16:55:06,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-07-21 16:55:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-07-21 16:55:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 16:55:06,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:06,659 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:06,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:06,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1806384368, now seen corresponding path program 1 times [2022-07-21 16:55:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:06,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174985443] [2022-07-21 16:55:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:06,894 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:06,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33240890] [2022-07-21 16:55:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:06,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:06,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:06,896 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) [2022-07-21 16:55:06,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 16:55:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:06,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:55:06,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:06,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:06,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:06,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174985443] [2022-07-21 16:55:06,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:06,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33240890] [2022-07-21 16:55:06,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33240890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:06,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:06,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 16:55:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931294609] [2022-07-21 16:55:06,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:06,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:06,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:06,995 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:07,037 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-07-21 16:55:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:55:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 16:55:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:07,039 INFO L225 Difference]: With dead ends: 47 [2022-07-21 16:55:07,040 INFO L226 Difference]: Without dead ends: 47 [2022-07-21 16:55:07,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:07,043 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:07,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:55:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-21 16:55:07,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-07-21 16:55:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-07-21 16:55:07,057 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 13 [2022-07-21 16:55:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:07,057 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-07-21 16:55:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-07-21 16:55:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 16:55:07,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:07,062 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:07,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 16:55:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:07,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1787518350, now seen corresponding path program 1 times [2022-07-21 16:55:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:07,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250595370] [2022-07-21 16:55:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:07,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251037549] [2022-07-21 16:55:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:07,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:07,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:07,290 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) [2022-07-21 16:55:07,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 16:55:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:07,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 16:55:07,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:07,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-21 16:55:07,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-21 16:55:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:07,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:07,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250595370] [2022-07-21 16:55:07,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:07,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251037549] [2022-07-21 16:55:07,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251037549] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:07,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:07,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-21 16:55:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066895151] [2022-07-21 16:55:07,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 16:55:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:07,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 16:55:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:55:07,689 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2022-07-21 16:55:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:07,786 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-07-21 16:55:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 16:55:07,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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 13 [2022-07-21 16:55:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:07,787 INFO L225 Difference]: With dead ends: 36 [2022-07-21 16:55:07,787 INFO L226 Difference]: Without dead ends: 36 [2022-07-21 16:55:07,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:55:07,789 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:07,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 28 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:55:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-21 16:55:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-07-21 16:55:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-07-21 16:55:07,795 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 13 [2022-07-21 16:55:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:07,796 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-07-21 16:55:07,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2022-07-21 16:55:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-07-21 16:55:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 16:55:07,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:07,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:07,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:08,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:08,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 768538716, now seen corresponding path program 1 times [2022-07-21 16:55:08,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:08,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577895608] [2022-07-21 16:55:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:08,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:08,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904373049] [2022-07-21 16:55:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:08,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:08,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:08,035 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) [2022-07-21 16:55:08,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 16:55:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:08,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 16:55:08,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:08,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:08,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577895608] [2022-07-21 16:55:08,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904373049] [2022-07-21 16:55:08,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904373049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:08,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:08,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 16:55:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877834285] [2022-07-21 16:55:08,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:08,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 16:55:08,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 16:55:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:08,200 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:08,258 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-07-21 16:55:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:08,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-07-21 16:55:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:08,259 INFO L225 Difference]: With dead ends: 44 [2022-07-21 16:55:08,259 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 16:55:08,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:08,260 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:08,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 46 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:55:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 16:55:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2022-07-21 16:55:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-07-21 16:55:08,263 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 15 [2022-07-21 16:55:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:08,264 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-07-21 16:55:08,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-07-21 16:55:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 16:55:08,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:08,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:08,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:08,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 181732702, now seen corresponding path program 1 times [2022-07-21 16:55:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:08,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270347783] [2022-07-21 16:55:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:08,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:08,485 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:08,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341021800] [2022-07-21 16:55:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:08,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:08,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:08,488 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) [2022-07-21 16:55:08,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 16:55:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:08,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 16:55:08,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:08,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:08,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270347783] [2022-07-21 16:55:08,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:08,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341021800] [2022-07-21 16:55:08,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341021800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:08,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:08,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 16:55:08,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516973832] [2022-07-21 16:55:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:08,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:55:08,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:55:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:55:08,691 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:08,765 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-07-21 16:55:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 16:55:08,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-07-21 16:55:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:08,769 INFO L225 Difference]: With dead ends: 41 [2022-07-21 16:55:08,769 INFO L226 Difference]: Without dead ends: 41 [2022-07-21 16:55:08,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-07-21 16:55:08,772 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:08,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:55:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-21 16:55:08,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2022-07-21 16:55:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-21 16:55:08,782 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2022-07-21 16:55:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:08,783 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-21 16:55:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-21 16:55:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:55:08,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:08,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:08,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 16:55:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:08,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1945105130, now seen corresponding path program 1 times [2022-07-21 16:55:08,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:08,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163711608] [2022-07-21 16:55:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:09,004 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:09,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776370663] [2022-07-21 16:55:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:09,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:09,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:09,013 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) [2022-07-21 16:55:09,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 16:55:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:09,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 16:55:09,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:09,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:09,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:09,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163711608] [2022-07-21 16:55:09,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:09,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776370663] [2022-07-21 16:55:09,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776370663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:09,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:09,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:09,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995804408] [2022-07-21 16:55:09,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:09,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:09,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:09,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:09,168 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-07-21 16:55:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:09,177 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-07-21 16:55:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:55:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-21 16:55:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:09,178 INFO L225 Difference]: With dead ends: 36 [2022-07-21 16:55:09,178 INFO L226 Difference]: Without dead ends: 34 [2022-07-21 16:55:09,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:09,179 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:09,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-07-21 16:55:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-21 16:55:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-21 16:55:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-07-21 16:55:09,182 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2022-07-21 16:55:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:09,182 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-07-21 16:55:09,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-07-21 16:55:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-07-21 16:55:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:55:09,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:09,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:09,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:09,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 16:55:09,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1945103590, now seen corresponding path program 1 times [2022-07-21 16:55:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:09,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803314963] [2022-07-21 16:55:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:09,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:09,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:09,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516966341] [2022-07-21 16:55:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:09,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:09,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:09,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:55:09,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 16:55:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:09,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 16:55:09,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:09,500 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 16:55:09,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 16:55:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:09,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:09,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:09,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803314963] [2022-07-21 16:55:09,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516966341] [2022-07-21 16:55:09,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516966341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:09,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:09,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:55:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89836954] [2022-07-21 16:55:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:55:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:55:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:09,521 INFO L87 Difference]: Start difference. First operand 33 states and 37 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) [2022-07-21 16:55:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:09,531 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-07-21 16:55:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:55:09,531 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 16 [2022-07-21 16:55:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:09,532 INFO L225 Difference]: With dead ends: 32 [2022-07-21 16:55:09,532 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 16:55:09,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:09,534 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:09,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:55:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 16:55:09,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-21 16:55:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-21 16:55:09,537 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2022-07-21 16:55:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:09,537 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-21 16:55:09,537 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) [2022-07-21 16:55:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-21 16:55:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:55:09,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:09,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:09,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:09,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:09,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1945103589, now seen corresponding path program 1 times [2022-07-21 16:55:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:09,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764070482] [2022-07-21 16:55:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:09,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:09,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313830205] [2022-07-21 16:55:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:09,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:09,774 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:55:09,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 16:55:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:09,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 16:55:09,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:09,848 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 16:55:09,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 16:55:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:09,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764070482] [2022-07-21 16:55:09,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313830205] [2022-07-21 16:55:09,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313830205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:09,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:09,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078104132] [2022-07-21 16:55:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:09,940 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-07-21 16:55:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:09,974 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-07-21 16:55:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 16:55:09,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-21 16:55:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:09,975 INFO L225 Difference]: With dead ends: 34 [2022-07-21 16:55:09,975 INFO L226 Difference]: Without dead ends: 34 [2022-07-21 16:55:09,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 16:55:09,976 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:09,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-07-21 16:55:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-21 16:55:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-21 16:55:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-07-21 16:55:09,978 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 16 [2022-07-21 16:55:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:09,979 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-07-21 16:55:09,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-07-21 16:55:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-07-21 16:55:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 16:55:09,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:09,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:10,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:10,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 16:55:10,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash 398462708, now seen corresponding path program 1 times [2022-07-21 16:55:10,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:10,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790430111] [2022-07-21 16:55:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:10,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:10,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:10,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966404594] [2022-07-21 16:55:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:10,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:10,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:10,216 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:55:10,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 16:55:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:10,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 16:55:10,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 16:55:10,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:10,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790430111] [2022-07-21 16:55:10,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:10,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966404594] [2022-07-21 16:55:10,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966404594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:10,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:10,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827467928] [2022-07-21 16:55:10,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:10,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:10,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:10,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:10,402 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:10,407 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-07-21 16:55:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:55:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-21 16:55:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:10,409 INFO L225 Difference]: With dead ends: 33 [2022-07-21 16:55:10,409 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 16:55:10,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:10,410 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:10,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-07-21 16:55:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 16:55:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-21 16:55:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 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) [2022-07-21 16:55:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-07-21 16:55:10,417 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 21 [2022-07-21 16:55:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-07-21 16:55:10,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-07-21 16:55:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 16:55:10,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:10,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:10,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 16:55:10,636 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-07-21 16:55:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash 398464249, now seen corresponding path program 1 times [2022-07-21 16:55:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:55:10,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153962394] [2022-07-21 16:55:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:10,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:55:10,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:55:10,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589579019] [2022-07-21 16:55:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:10,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:55:10,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:55:10,655 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:55:10,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 16:55:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:10,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 16:55:10,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:10,727 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 16:55:10,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 16:55:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:10,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:55:11,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153962394] [2022-07-21 16:55:11,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:55:11,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589579019] [2022-07-21 16:55:11,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589579019] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:11,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:11,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-21 16:55:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385439978] [2022-07-21 16:55:11,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 16:55:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:55:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 16:55:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:55:11,083 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:11,162 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-21 16:55:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:11,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2022-07-21 16:55:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:11,162 INFO L225 Difference]: With dead ends: 30 [2022-07-21 16:55:11,162 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 16:55:11,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:55:11,163 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:11,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-07-21 16:55:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 16:55:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 16:55:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 16:55:11,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-07-21 16:55:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:11,165 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 16:55:11,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 16:55:11,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 16:55:11,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2022-07-21 16:55:11,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2022-07-21 16:55:11,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2022-07-21 16:55:11,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2022-07-21 16:55:11,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2022-07-21 16:55:11,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2022-07-21 16:55:11,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-07-21 16:55:11,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 16:55:11,386 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:11,387 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 16:55:11,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:55:11 BoogieIcfgContainer [2022-07-21 16:55:11,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 16:55:11,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 16:55:11,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 16:55:11,390 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 16:55:11,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:05" (3/4) ... [2022-07-21 16:55:11,392 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 16:55:11,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-21 16:55:11,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 16:55:11,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 16:55:11,401 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 16:55:11,427 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 16:55:11,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 16:55:11,428 INFO L158 Benchmark]: Toolchain (without parser) took 7083.17ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 39.9MB in the beginning and 40.1MB in the end (delta: -237.1kB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-07-21 16:55:11,428 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 46.1MB. Free memory was 28.3MB in the beginning and 28.2MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:55:11,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.84ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 34.1MB in the end (delta: 5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 16:55:11,429 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.02ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 32.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 16:55:11,429 INFO L158 Benchmark]: Boogie Preprocessor took 38.23ms. Allocated memory is still 56.6MB. Free memory was 32.1MB in the beginning and 30.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:55:11,429 INFO L158 Benchmark]: RCFGBuilder took 414.97ms. Allocated memory is still 56.6MB. Free memory was 30.9MB in the beginning and 32.5MB in the end (delta: -1.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-21 16:55:11,430 INFO L158 Benchmark]: TraceAbstraction took 6163.46ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 32.0MB in the beginning and 42.8MB in the end (delta: -10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-21 16:55:11,430 INFO L158 Benchmark]: Witness Printer took 37.80ms. Allocated memory is still 83.9MB. Free memory was 42.8MB in the beginning and 40.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 16:55:11,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 46.1MB. Free memory was 28.3MB in the beginning and 28.2MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.84ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 34.1MB in the end (delta: 5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.02ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 32.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.23ms. Allocated memory is still 56.6MB. Free memory was 32.1MB in the beginning and 30.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 414.97ms. Allocated memory is still 56.6MB. Free memory was 30.9MB in the beginning and 32.5MB in the end (delta: -1.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6163.46ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 32.0MB in the beginning and 42.8MB in the end (delta: -10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 37.80ms. Allocated memory is still 83.9MB. Free memory was 42.8MB in the beginning and 40.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 192 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 33 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 192 ConstructedInterpolants, 29 QuantifiedInterpolants, 2375 SizeOfPredicates, 36 NumberOfNonLiveVariables, 944 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 13/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 16:55:11,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE