./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 19:49:26,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 19:49:26,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 19:49:26,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 19:49:26,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 19:49:26,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 19:49:26,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 19:49:26,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 19:49:26,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 19:49:26,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 19:49:26,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 19:49:26,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 19:49:26,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 19:49:26,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 19:49:26,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 19:49:26,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 19:49:26,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 19:49:26,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 19:49:26,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 19:49:26,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 19:49:26,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 19:49:26,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 19:49:26,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 19:49:26,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 19:49:26,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 19:49:26,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 19:49:26,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 19:49:26,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 19:49:26,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 19:49:26,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 19:49:26,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 19:49:26,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 19:49:26,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 19:49:26,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 19:49:26,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 19:49:26,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 19:49:26,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 19:49:26,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 19:49:26,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 19:49:26,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 19:49:26,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 19:49:26,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 19:49:26,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 19:49:26,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 19:49:26,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 19:49:26,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 19:49:26,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 19:49:26,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 19:49:26,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 19:49:26,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 19:49:26,903 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 19:49:26,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 19:49:26,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 19:49:26,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 19:49:26,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 19:49:26,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 19:49:26,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 19:49:26,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 19:49:26,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 19:49:26,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 19:49:26,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 19:49:26,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:49:26,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 19:49:26,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 19:49:26,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 19:49:26,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 19:49:26,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 19:49:26,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 [2021-12-18 19:49:27,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 19:49:27,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 19:49:27,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 19:49:27,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 19:49:27,145 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 19:49:27,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-12-18 19:49:27,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8871219/bec587e362e149f0a9c61ccbdae085b9/FLAG4048e3fab [2021-12-18 19:49:27,580 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 19:49:27,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-12-18 19:49:27,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8871219/bec587e362e149f0a9c61ccbdae085b9/FLAG4048e3fab [2021-12-18 19:49:27,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8871219/bec587e362e149f0a9c61ccbdae085b9 [2021-12-18 19:49:27,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 19:49:27,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 19:49:27,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 19:49:27,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 19:49:27,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 19:49:27,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51facb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27, skipping insertion in model container [2021-12-18 19:49:27,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 19:49:27,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:49:27,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:49:27,844 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 19:49:27,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:49:27,915 INFO L208 MainTranslator]: Completed translation [2021-12-18 19:49:27,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27 WrapperNode [2021-12-18 19:49:27,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 19:49:27,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 19:49:27,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 19:49:27,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 19:49:27,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,962 INFO L137 Inliner]: procedures = 115, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2021-12-18 19:49:27,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 19:49:27,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 19:49:27,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 19:49:27,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 19:49:27,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:27,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 19:49:27,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 19:49:27,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 19:49:27,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 19:49:27,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (1/1) ... [2021-12-18 19:49:28,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:49:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:28,030 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) [2021-12-18 19:49:28,058 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 [2021-12-18 19:49:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 19:49:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 19:49:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 19:49:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 19:49:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 19:49:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 19:49:28,125 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 19:49:28,126 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 19:49:28,277 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 19:49:28,282 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 19:49:28,282 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 19:49:28,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:28 BoogieIcfgContainer [2021-12-18 19:49:28,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 19:49:28,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 19:49:28,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 19:49:28,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 19:49:28,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:49:27" (1/3) ... [2021-12-18 19:49:28,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a73560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:49:28, skipping insertion in model container [2021-12-18 19:49:28,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:27" (2/3) ... [2021-12-18 19:49:28,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a73560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:49:28, skipping insertion in model container [2021-12-18 19:49:28,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:28" (3/3) ... [2021-12-18 19:49:28,290 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2021-12-18 19:49:28,293 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 19:49:28,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-18 19:49:28,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 19:49:28,339 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 [2021-12-18 19:49:28,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-18 19:49:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 19:49:28,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:28,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:28,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-18 19:49:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash 119383862, now seen corresponding path program 1 times [2021-12-18 19:49:28,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:28,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653660900] [2021-12-18 19:49:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:28,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:28,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 19:49:28,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298747507] [2021-12-18 19:49:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:28,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:49:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:28,459 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) [2021-12-18 19:49:28,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 19:49:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:28,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 19:49:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:28,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:28,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653660900] [2021-12-18 19:49:28,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 19:49:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298747507] [2021-12-18 19:49:28,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298747507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:28,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:28,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:28,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617477591] [2021-12-18 19:49:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:28,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:28,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:28,679 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:28,733 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-18 19:49:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:28,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-18 19:49:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:28,741 INFO L225 Difference]: With dead ends: 28 [2021-12-18 19:49:28,741 INFO L226 Difference]: Without dead ends: 26 [2021-12-18 19:49:28,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:28,745 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:28,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-18 19:49:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-18 19:49:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-18 19:49:28,765 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2021-12-18 19:49:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:28,766 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-18 19:49:28,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-18 19:49:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 19:49:28,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:28,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:28,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 19:49:28,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-18 19:49:28,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-18 19:49:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash -594066643, now seen corresponding path program 1 times [2021-12-18 19:49:28,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106445695] [2021-12-18 19:49:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:28,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:28,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 19:49:28,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549453938] [2021-12-18 19:49:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:28,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:49:28,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:28,993 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) [2021-12-18 19:49:28,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 19:49:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 19:49:29,032 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 19:49:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 19:49:29,051 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-18 19:49:29,051 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 19:49:29,052 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (6 of 7 remaining) [2021-12-18 19:49:29,053 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-12-18 19:49:29,053 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 7 remaining) [2021-12-18 19:49:29,053 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (3 of 7 remaining) [2021-12-18 19:49:29,054 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (2 of 7 remaining) [2021-12-18 19:49:29,054 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 7 remaining) [2021-12-18 19:49:29,054 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-12-18 19:49:29,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:29,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-18 19:49:29,274 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-18 19:49:29,276 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 19:49:29,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:49:29 BoogieIcfgContainer [2021-12-18 19:49:29,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 19:49:29,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 19:49:29,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 19:49:29,294 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 19:49:29,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:28" (3/4) ... [2021-12-18 19:49:29,296 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-18 19:49:29,333 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 19:49:29,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 19:49:29,334 INFO L158 Benchmark]: Toolchain (without parser) took 1725.70ms. Allocated memory is still 94.4MB. Free memory was 60.9MB in the beginning and 50.9MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 19:49:29,336 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 47.7MB in the beginning and 47.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:49:29,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.46ms. Allocated memory is still 94.4MB. Free memory was 60.9MB in the beginning and 63.7MB in the end (delta: -2.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 19:49:29,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.95ms. Allocated memory is still 94.4MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:49:29,339 INFO L158 Benchmark]: Boogie Preprocessor took 30.97ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 60.5MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-18 19:49:29,340 INFO L158 Benchmark]: RCFGBuilder took 287.85ms. Allocated memory is still 94.4MB. Free memory was 60.5MB in the beginning and 49.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 19:49:29,340 INFO L158 Benchmark]: TraceAbstraction took 1005.82ms. Allocated memory is still 94.4MB. Free memory was 48.5MB in the beginning and 52.4MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:49:29,340 INFO L158 Benchmark]: Witness Printer took 41.67ms. Allocated memory is still 94.4MB. Free memory was 52.4MB in the beginning and 50.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:49:29,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 47.7MB in the beginning and 47.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.46ms. Allocated memory is still 94.4MB. Free memory was 60.9MB in the beginning and 63.7MB in the end (delta: -2.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.95ms. Allocated memory is still 94.4MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.97ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 60.5MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 287.85ms. Allocated memory is still 94.4MB. Free memory was 60.5MB in the beginning and 49.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1005.82ms. Allocated memory is still 94.4MB. Free memory was 48.5MB in the beginning and 52.4MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.67ms. Allocated memory is still 94.4MB. Free memory was 52.4MB in the beginning and 50.9MB in the end (delta: 1.5MB). There was no memory consumed. 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: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={3:0}, __builtin_alloca (length)={2:0}, arr={2:0}, arr2={3:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [__builtin_alloca (fac*length)={3:0}, __builtin_alloca (length)={2:0}, arr={2:0}, arr2={3:0}, fac=1, i=0, length=1] [L521] COND TRUE i