./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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/memsafety-ext3/getNumbers1-1.c -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 ae33a6a64877fc5c824e4d2dbc13817f946c171e566de8189cdbc86c749355b6 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:54:08,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:54:08,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:54:08,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:54:08,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:54:08,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:54:08,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:54:08,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:54:08,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:54:08,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:54:08,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:54:08,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:54:08,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:54:08,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:54:08,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:54:08,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:54:08,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:54:08,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:54:08,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:54:08,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:54:08,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:54:08,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:54:08,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:54:08,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:54:08,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:54:08,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:54:08,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:54:08,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:54:08,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:54:08,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:54:08,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:54:08,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:54:08,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:54:08,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:54:08,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:54:08,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:54:08,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:54:08,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:54:08,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:54:08,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:54:08,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:54:08,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 19:54:08,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:54:08,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:54:08,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:54:08,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:54:08,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:54:08,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:54:08,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:54:08,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:54:08,888 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:54:08,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:54:08,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:54:08,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:54:08,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:54:08,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:54:08,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:54:08,889 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:54:08,890 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:54:08,890 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:54:08,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:54:08,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:54:08,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:54:08,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:54:08,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:54:08,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:54:08,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:54:08,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:54:08,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:54:08,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:54:08,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:54:08,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:54:08,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:54:08,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae33a6a64877fc5c824e4d2dbc13817f946c171e566de8189cdbc86c749355b6 [2021-12-14 19:54:09,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:54:09,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:54:09,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:54:09,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:54:09,118 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:54:09,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2021-12-14 19:54:09,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f659cd7a8/2371c99f97e7494da23eccb398db29f1/FLAGd4b4f34d8 [2021-12-14 19:54:09,603 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:54:09,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2021-12-14 19:54:09,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f659cd7a8/2371c99f97e7494da23eccb398db29f1/FLAGd4b4f34d8 [2021-12-14 19:54:10,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f659cd7a8/2371c99f97e7494da23eccb398db29f1 [2021-12-14 19:54:10,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:54:10,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:54:10,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:54:10,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:54:10,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:54:10,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108e855d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10, skipping insertion in model container [2021-12-14 19:54:10,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:54:10,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:54:10,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:54:10,210 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:54:10,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:54:10,229 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:54:10,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10 WrapperNode [2021-12-14 19:54:10,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:54:10,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:54:10,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:54:10,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:54:10,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,260 INFO L137 Inliner]: procedures = 12, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-14 19:54:10,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:54:10,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:54:10,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:54:10,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:54:10,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:54:10,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:54:10,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:54:10,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:54:10,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (1/1) ... [2021-12-14 19:54:10,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:54:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:10,324 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) [2021-12-14 19:54:10,344 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 [2021-12-14 19:54:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 19:54:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:54:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:54:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:54:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 19:54:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 19:54:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 19:54:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:54:10,422 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:54:10,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:54:10,534 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:54:10,539 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:54:10,539 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 19:54:10,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:10 BoogieIcfgContainer [2021-12-14 19:54:10,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:54:10,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:54:10,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:54:10,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:54:10,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:54:10" (1/3) ... [2021-12-14 19:54:10,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fdfcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:10, skipping insertion in model container [2021-12-14 19:54:10,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:10" (2/3) ... [2021-12-14 19:54:10,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fdfcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:10, skipping insertion in model container [2021-12-14 19:54:10,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:10" (3/3) ... [2021-12-14 19:54:10,553 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-1.c [2021-12-14 19:54:10,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:54:10,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-14 19:54:10,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:54:10,645 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 19:54:10,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-14 19:54:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-14 19:54:10,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:10,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-14 19:54:10,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:10,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-12-14 19:54:10,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:10,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93250609] [2021-12-14 19:54:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:10,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:10,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:10,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93250609] [2021-12-14 19:54:10,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93250609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:10,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:10,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:54:10,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778991360] [2021-12-14 19:54:10,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:10,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:10,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:10,923 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:10,962 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-14 19:54:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-14 19:54:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:10,970 INFO L225 Difference]: With dead ends: 19 [2021-12-14 19:54:10,970 INFO L226 Difference]: Without dead ends: 17 [2021-12-14 19:54:10,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:10,976 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:10,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-14 19:54:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-14 19:54:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-12-14 19:54:11,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2021-12-14 19:54:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:11,004 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-12-14 19:54:11,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-12-14 19:54:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-14 19:54:11,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:11,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-14 19:54:11,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 19:54:11,006 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-12-14 19:54:11,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:11,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470893235] [2021-12-14 19:54:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:11,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:11,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:11,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470893235] [2021-12-14 19:54:11,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470893235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:11,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:11,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:54:11,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389743] [2021-12-14 19:54:11,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:11,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:11,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:11,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:11,093 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:11,111 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-12-14 19:54:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-14 19:54:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:11,113 INFO L225 Difference]: With dead ends: 20 [2021-12-14 19:54:11,113 INFO L226 Difference]: Without dead ends: 20 [2021-12-14 19:54:11,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:11,114 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 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 [2021-12-14 19:54:11,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-14 19:54:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-12-14 19:54:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-14 19:54:11,119 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2021-12-14 19:54:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:11,119 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-14 19:54:11,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-14 19:54:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 19:54:11,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:11,120 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-12-14 19:54:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 19:54:11,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2021-12-14 19:54:11,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615646510] [2021-12-14 19:54:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:11,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:11,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:11,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615646510] [2021-12-14 19:54:11,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615646510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:54:11,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737480542] [2021-12-14 19:54:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:11,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:11,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:11,199 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) [2021-12-14 19:54:11,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 19:54:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:11,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 19:54:11,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:54:11,321 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 19:54:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:11,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:54:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:11,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737480542] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:54:11,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:54:11,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-12-14 19:54:11,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518745410] [2021-12-14 19:54:11,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:54:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 19:54:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 19:54:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:54:11,446 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-12-14 19:54:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:11,514 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-12-14 19:54:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:54:11,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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 7 [2021-12-14 19:54:11,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:11,515 INFO L225 Difference]: With dead ends: 50 [2021-12-14 19:54:11,515 INFO L226 Difference]: Without dead ends: 50 [2021-12-14 19:54:11,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-14 19:54:11,517 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:11,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 43 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:11,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-14 19:54:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 28. [2021-12-14 19:54:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-12-14 19:54:11,522 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 7 [2021-12-14 19:54:11,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:11,522 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-12-14 19:54:11,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-12-14 19:54:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-12-14 19:54:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-14 19:54:11,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:11,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:11,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 19:54:11,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:11,747 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1612520618, now seen corresponding path program 1 times [2021-12-14 19:54:11,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:11,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44676943] [2021-12-14 19:54:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:11,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-14 19:54:11,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:11,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44676943] [2021-12-14 19:54:11,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44676943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:11,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:11,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:54:11,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877426292] [2021-12-14 19:54:11,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:11,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:54:11,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:54:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:54:11,822 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:11,861 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-12-14 19:54:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:54:11,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2021-12-14 19:54:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:11,863 INFO L225 Difference]: With dead ends: 33 [2021-12-14 19:54:11,863 INFO L226 Difference]: Without dead ends: 33 [2021-12-14 19:54:11,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:54:11,870 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:11,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 22 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-14 19:54:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-12-14 19:54:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 29 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) [2021-12-14 19:54:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-12-14 19:54:11,879 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 13 [2021-12-14 19:54:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:11,879 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-12-14 19:54:11,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:11,881 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-12-14 19:54:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-14 19:54:11,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:11,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:11,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 19:54:11,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:11,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1612520617, now seen corresponding path program 1 times [2021-12-14 19:54:11,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:11,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810976854] [2021-12-14 19:54:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:11,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:11,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810976854] [2021-12-14 19:54:11,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810976854] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:54:11,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360382389] [2021-12-14 19:54:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:11,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:11,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:11,945 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) [2021-12-14 19:54:11,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 19:54:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:11,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 19:54:11,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:54:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:12,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:54:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:12,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360382389] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:54:12,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:54:12,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-14 19:54:12,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181103697] [2021-12-14 19:54:12,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:54:12,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 19:54:12,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:12,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 19:54:12,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-14 19:54:12,100 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:12,128 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-12-14 19:54:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 19:54:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2021-12-14 19:54:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:12,129 INFO L225 Difference]: With dead ends: 36 [2021-12-14 19:54:12,129 INFO L226 Difference]: Without dead ends: 36 [2021-12-14 19:54:12,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-14 19:54:12,130 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:12,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-14 19:54:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-12-14 19:54:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 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) [2021-12-14 19:54:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-12-14 19:54:12,134 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2021-12-14 19:54:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:12,134 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-12-14 19:54:12,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-12-14 19:54:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 19:54:12,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:12,135 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2021-12-14 19:54:12,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 19:54:12,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:12,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -116849082, now seen corresponding path program 2 times [2021-12-14 19:54:12,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:12,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480400340] [2021-12-14 19:54:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:12,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:12,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:12,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480400340] [2021-12-14 19:54:12,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480400340] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:54:12,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010238853] [2021-12-14 19:54:12,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 19:54:12,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:12,494 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) [2021-12-14 19:54:12,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 19:54:12,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 19:54:12,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 19:54:12,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-14 19:54:12,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:54:12,558 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 19:54:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:12,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:54:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:12,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010238853] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:54:12,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:54:12,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2021-12-14 19:54:12,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689607897] [2021-12-14 19:54:12,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:54:12,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 19:54:12,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 19:54:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-12-14 19:54:12,880 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:13,129 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2021-12-14 19:54:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 19:54:13,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 [2021-12-14 19:54:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:13,131 INFO L225 Difference]: With dead ends: 100 [2021-12-14 19:54:13,131 INFO L226 Difference]: Without dead ends: 100 [2021-12-14 19:54:13,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2021-12-14 19:54:13,132 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 130 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:13,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 107 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:54:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-14 19:54:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 48. [2021-12-14 19:54:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-12-14 19:54:13,136 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 16 [2021-12-14 19:54:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:13,137 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-12-14 19:54:13,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:13,137 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-12-14 19:54:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 19:54:13,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:13,137 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:13,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 19:54:13,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:13,338 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash -603654487, now seen corresponding path program 2 times [2021-12-14 19:54:13,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:13,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051974876] [2021-12-14 19:54:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:13,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:13,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:13,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051974876] [2021-12-14 19:54:13,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051974876] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:54:13,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299443864] [2021-12-14 19:54:13,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 19:54:13,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:13,439 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) [2021-12-14 19:54:13,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 19:54:13,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 19:54:13,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 19:54:13,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 19:54:13,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:54:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:13,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:54:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:13,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299443864] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:54:13,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:54:13,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2021-12-14 19:54:13,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563017447] [2021-12-14 19:54:13,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:54:13,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 19:54:13,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 19:54:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-14 19:54:13,650 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:13,714 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-12-14 19:54:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 19:54:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-14 19:54:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:13,716 INFO L225 Difference]: With dead ends: 48 [2021-12-14 19:54:13,716 INFO L226 Difference]: Without dead ends: 48 [2021-12-14 19:54:13,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-14 19:54:13,718 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:13,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 38 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:54:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-14 19:54:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-14 19:54:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-12-14 19:54:13,726 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 25 [2021-12-14 19:54:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:13,726 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-12-14 19:54:13,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-12-14 19:54:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 19:54:13,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:13,728 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2021-12-14 19:54:13,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 19:54:13,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:13,956 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1565294406, now seen corresponding path program 3 times [2021-12-14 19:54:13,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058580943] [2021-12-14 19:54:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:13,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 127 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:14,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:14,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058580943] [2021-12-14 19:54:14,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058580943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:54:14,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137515534] [2021-12-14 19:54:14,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 19:54:14,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:14,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:14,164 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) [2021-12-14 19:54:14,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 19:54:14,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-14 19:54:14,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 19:54:14,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 19:54:14,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:54:14,234 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 19:54:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-14 19:54:14,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:54:14,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137515534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:14,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 19:54:14,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2021-12-14 19:54:14,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497669261] [2021-12-14 19:54:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:14,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:54:14,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:54:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=158, Unknown=0, NotChecked=0, Total=272 [2021-12-14 19:54:14,429 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-12-14 19:54:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:14,448 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-12-14 19:54:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:54:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 34 [2021-12-14 19:54:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:14,449 INFO L225 Difference]: With dead ends: 47 [2021-12-14 19:54:14,449 INFO L226 Difference]: Without dead ends: 47 [2021-12-14 19:54:14,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=158, Unknown=0, NotChecked=0, Total=272 [2021-12-14 19:54:14,450 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:14,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-14 19:54:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-12-14 19:54:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-12-14 19:54:14,453 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2021-12-14 19:54:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:14,453 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-12-14 19:54:14,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-12-14 19:54:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-12-14 19:54:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 19:54:14,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:14,454 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:14,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 19:54:14,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:54:14,671 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-14 19:54:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 3 times [2021-12-14 19:54:14,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:14,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107024872] [2021-12-14 19:54:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:14,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:54:14,720 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 19:54:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:54:14,773 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 19:54:14,773 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 19:54:14,774 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 5 remaining) [2021-12-14 19:54:14,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (3 of 5 remaining) [2021-12-14 19:54:14,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (2 of 5 remaining) [2021-12-14 19:54:14,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (1 of 5 remaining) [2021-12-14 19:54:14,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2021-12-14 19:54:14,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 19:54:14,779 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1] [2021-12-14 19:54:14,781 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 19:54:14,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:54:14 BoogieIcfgContainer [2021-12-14 19:54:14,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 19:54:14,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 19:54:14,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 19:54:14,835 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 19:54:14,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:10" (3/4) ... [2021-12-14 19:54:14,836 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-14 19:54:14,871 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 19:54:14,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 19:54:14,871 INFO L158 Benchmark]: Toolchain (without parser) took 4847.16ms. Allocated memory was 90.2MB in the beginning and 144.7MB in the end (delta: 54.5MB). Free memory was 61.7MB in the beginning and 59.9MB in the end (delta: 1.8MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2021-12-14 19:54:14,871 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:54:14,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.19ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 61.5MB in the beginning and 96.4MB in the end (delta: -34.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 19:54:14,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.78ms. Allocated memory is still 119.5MB. Free memory was 96.4MB in the beginning and 95.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:54:14,872 INFO L158 Benchmark]: Boogie Preprocessor took 26.56ms. Allocated memory is still 119.5MB. Free memory was 95.1MB in the beginning and 93.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:54:14,872 INFO L158 Benchmark]: RCFGBuilder took 251.20ms. Allocated memory is still 119.5MB. Free memory was 93.8MB in the beginning and 84.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 19:54:14,873 INFO L158 Benchmark]: TraceAbstraction took 4292.10ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 83.8MB in the beginning and 63.1MB in the end (delta: 20.7MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2021-12-14 19:54:14,873 INFO L158 Benchmark]: Witness Printer took 36.45ms. Allocated memory is still 144.7MB. Free memory was 62.0MB in the beginning and 59.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:54:14,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.19ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 61.5MB in the beginning and 96.4MB in the end (delta: -34.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.78ms. Allocated memory is still 119.5MB. Free memory was 96.4MB in the beginning and 95.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.56ms. Allocated memory is still 119.5MB. Free memory was 95.1MB in the beginning and 93.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 251.20ms. Allocated memory is still 119.5MB. Free memory was 93.8MB in the beginning and 84.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4292.10ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 83.8MB in the beginning and 63.1MB in the end (delta: 20.7MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * Witness Printer took 36.45ms. Allocated memory is still 144.7MB. Free memory was 62.0MB in the beginning and 59.9MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L19] CALL, EXPR getNumbers() [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=10] [L10] COND FALSE !(i < 10) VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=10] [L14] return array; [L19] RET, EXPR getNumbers() [L19] int *numbers = getNumbers(); [L21] int i = 0; VAL [i=0, numbers={11:0}] [L21] COND TRUE i < 10 [L22] numbers + i - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 247 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 314 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 378 IncrementalHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 101 mSDtfsCounter, 378 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 80 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 248 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 1988 SizeOfPredicates, 6 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 287/567 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 RESULT: Ultimate proved your program to be incorrect! [2021-12-14 19:54:14,901 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)