./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/ex3b-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/ex3b-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f23478267c7db041e0d430f7852fa8cba288847df5f5dded3d7c2138de17e1ef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:05:35,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:05:35,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:05:36,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:05:36,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:05:36,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:05:36,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:05:36,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:05:36,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:05:36,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:05:36,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:05:36,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:05:36,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:05:36,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:05:36,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:05:36,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:05:36,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:05:36,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:05:36,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:05:36,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:05:36,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:05:36,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:05:36,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:05:36,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:05:36,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:05:36,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:05:36,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:05:36,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:05:36,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:05:36,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:05:36,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:05:36,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:05:36,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:05:36,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:05:36,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:05:36,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:05:36,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:05:36,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:05:36,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:05:36,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:05:36,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:05:36,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-21 09:05:36,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:05:36,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:05:36,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:05:36,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:05:36,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:05:36,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:05:36,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:05:36,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:05:36,188 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:05:36,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:05:36,190 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:05:36,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:05:36,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:05:36,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:05:36,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:05:36,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:05:36,192 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 09:05:36,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:05:36,192 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:05:36,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:05:36,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:05:36,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:05:36,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:05:36,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:05:36,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:05:36,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:05:36,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:05:36,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:05:36,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:05:36,196 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:05:36,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:05:36,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:05:36,197 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f23478267c7db041e0d430f7852fa8cba288847df5f5dded3d7c2138de17e1ef [2022-11-21 09:05:36,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:05:36,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:05:36,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:05:36,603 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:05:36,604 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:05:36,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-memory-alloca/ex3b-alloca.i [2022-11-21 09:05:40,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:05:40,867 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:05:40,873 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/sv-benchmarks/c/termination-memory-alloca/ex3b-alloca.i [2022-11-21 09:05:40,894 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/data/663cf3632/9a014e27455b40d9b1f221562a5c5b4d/FLAGcff21ca2b [2022-11-21 09:05:40,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/data/663cf3632/9a014e27455b40d9b1f221562a5c5b4d [2022-11-21 09:05:40,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:05:40,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:05:40,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:05:40,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:05:40,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:05:40,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:40" (1/1) ... [2022-11-21 09:05:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11acc30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:40, skipping insertion in model container [2022-11-21 09:05:40,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:40" (1/1) ... [2022-11-21 09:05:40,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:05:41,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:05:41,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:05:41,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:05:41,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:05:41,634 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:05:41,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41 WrapperNode [2022-11-21 09:05:41,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:05:41,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:05:41,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:05:41,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:05:41,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,702 INFO L138 Inliner]: procedures = 111, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-21 09:05:41,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:05:41,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:05:41,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:05:41,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:05:41,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:05:41,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:05:41,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:05:41,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:05:41,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (1/1) ... [2022-11-21 09:05:41,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:05:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:05:41,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:05:41,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:05:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:05:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:05:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:05:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:05:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:05:41,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:05:42,029 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:05:42,032 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:05:42,264 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:05:42,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:05:42,272 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:05:42,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:42 BoogieIcfgContainer [2022-11-21 09:05:42,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:05:42,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:05:42,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:05:42,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:05:42,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:05:40" (1/3) ... [2022-11-21 09:05:42,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffd9af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:42, skipping insertion in model container [2022-11-21 09:05:42,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:41" (2/3) ... [2022-11-21 09:05:42,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffd9af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:42, skipping insertion in model container [2022-11-21 09:05:42,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:42" (3/3) ... [2022-11-21 09:05:42,288 INFO L112 eAbstractionObserver]: Analyzing ICFG ex3b-alloca.i [2022-11-21 09:05:42,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:05:42,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-21 09:05:42,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:05:42,387 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@662e4478, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:05:42,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 09:05:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 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) [2022-11-21 09:05:42,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:05:42,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:42,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 09:05:42,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 09:05:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash 889569447, now seen corresponding path program 1 times [2022-11-21 09:05:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:42,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636297614] [2022-11-21 09:05:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:42,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:05:42,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621757844] [2022-11-21 09:05:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:42,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:05:42,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:05:42,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:05:42,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:05:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:05:42,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:05:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:05:42,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:05:42,896 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:05:42,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-21 09:05:42,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-21 09:05:42,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-21 09:05:42,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-21 09:05:42,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:05:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 09:05:43,144 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 09:05:43,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 09:05:43,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:05:43 BoogieIcfgContainer [2022-11-21 09:05:43,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 09:05:43,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:05:43,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:05:43,213 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:05:43,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:42" (3/4) ... [2022-11-21 09:05:43,219 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 09:05:43,301 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 09:05:43,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:05:43,305 INFO L158 Benchmark]: Toolchain (without parser) took 2378.32ms. Allocated memory was 163.6MB in the beginning and 201.3MB in the end (delta: 37.7MB). Free memory was 116.2MB in the beginning and 163.9MB in the end (delta: -47.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:05:43,306 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 163.6MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:05:43,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.94ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 100.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-21 09:05:43,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.24ms. Allocated memory is still 163.6MB. Free memory was 100.9MB in the beginning and 98.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:05:43,308 INFO L158 Benchmark]: Boogie Preprocessor took 54.96ms. Allocated memory is still 163.6MB. Free memory was 98.9MB in the beginning and 98.0MB in the end (delta: 903.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:05:43,309 INFO L158 Benchmark]: RCFGBuilder took 516.21ms. Allocated memory is still 163.6MB. Free memory was 98.0MB in the beginning and 86.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 09:05:43,313 INFO L158 Benchmark]: TraceAbstraction took 932.94ms. Allocated memory was 163.6MB in the beginning and 201.3MB in the end (delta: 37.7MB). Free memory was 85.4MB in the beginning and 166.0MB in the end (delta: -80.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:05:43,314 INFO L158 Benchmark]: Witness Printer took 91.75ms. Allocated memory is still 201.3MB. Free memory was 166.0MB in the beginning and 163.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:05:43,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 163.6MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.94ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 100.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.24ms. Allocated memory is still 163.6MB. Free memory was 100.9MB in the beginning and 98.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.96ms. Allocated memory is still 163.6MB. Free memory was 98.9MB in the beginning and 98.0MB in the end (delta: 903.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.21ms. Allocated memory is still 163.6MB. Free memory was 98.0MB in the beginning and 86.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 932.94ms. Allocated memory was 163.6MB in the beginning and 201.3MB in the end (delta: 37.7MB). Free memory was 85.4MB in the beginning and 166.0MB in the end (delta: -80.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 91.75ms. Allocated memory is still 201.3MB. Free memory was 166.0MB in the beginning and 163.9MB 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: 556]: integer overflow possible integer overflow possible We found a FailurePath: [L562] CALL test_fun(__VERIFIER_nondet_int(),__VERIFIER_nondet_int()) [L549] int* x_ref = __builtin_alloca (sizeof(int)); [L550] int* y_ref = __builtin_alloca (sizeof(int)); [L551] int* c = __builtin_alloca (sizeof(int)); [L552] *x_ref = x [L553] *y_ref = y [L554] *c = 0 VAL [\old(x)=1027524, \old(y)=1027525, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={4:0}, c={4:0}, x=1027524, x_ref={2:0}, y=1027525, y_ref={3:0}] [L555] EXPR \read(*x_ref) [L555] (*x_ref > 1) && (*x_ref < *y_ref) [L555] EXPR \read(*x_ref) [L555] EXPR \read(*y_ref) [L555] (*x_ref > 1) && (*x_ref < *y_ref) VAL [(*x_ref > 1) && (*x_ref < *y_ref)=1, \old(x)=1027524, \old(y)=1027525, \read(*x_ref)=1027524, \read(*x_ref)=1027524, \read(*y_ref)=1027525, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={4:0}, c={4:0}, x=1027524, x_ref={2:0}, y=1027525, y_ref={3:0}] [L555] COND TRUE (*x_ref > 1) && (*x_ref < *y_ref) [L556] EXPR \read(*x_ref) [L556] EXPR \read(*x_ref) VAL [\old(x)=1027524, \old(y)=1027525, \read(*x_ref)=1027524, \read(*x_ref)=1027524, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={4:0}, c={4:0}, x=1027524, x_ref={2:0}, y=1027525, y_ref={3:0}] [L556] (*x_ref) * (*x_ref) VAL [\old(x)=1027524, \old(y)=1027525, \read(*x_ref)=1027524, \read(*x_ref)=1027524, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={4:0}, c={4:0}, x=1027524, x_ref={2:0}, y=1027525, y_ref={3:0}] - UnprovableResult [Line: 556]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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! [2022-11-21 09:05:43,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4170adb-100a-4d79-a07a-72312903001c/bin/uautomizer-vX5HgA9Q3a/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(OVERFLOW)