./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU --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 d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:30:08,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:30:08,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:30:08,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:30:08,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:30:08,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:30:08,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:30:08,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:30:08,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:30:08,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:30:08,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:30:08,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:30:08,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:30:08,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:30:08,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:30:08,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:30:08,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:30:08,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:30:08,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:30:08,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:30:08,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:30:08,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:30:08,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:30:08,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:30:08,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:30:08,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:30:08,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:30:08,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:30:08,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:30:08,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:30:08,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:30:08,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:30:08,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:30:08,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:30:08,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:30:08,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:30:08,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:30:08,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:30:08,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:30:08,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:30:08,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:30:08,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-02 22:30:08,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:30:08,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:30:08,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:30:08,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:30:08,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:30:08,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:30:08,193 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:30:08,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:30:08,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:30:08,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:30:08,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:30:08,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:30:08,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:30:08,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:30:08,195 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:30:08,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:30:08,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:30:08,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:30:08,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:30:08,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:30:08,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:30:08,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:30:08,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:30:08,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:30:08,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:30:08,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:30:08,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:30:08,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:30:08,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:30:08,198 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_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 [2021-11-02 22:30:08,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:30:08,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:30:08,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:30:08,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:30:08,569 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:30:08,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-11-02 22:30:08,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/data/da3bb811c/170d2c10ae11456a98b0ff7ddcd78d42/FLAG98eaf34eb [2021-11-02 22:30:09,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:30:09,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-11-02 22:30:09,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/data/da3bb811c/170d2c10ae11456a98b0ff7ddcd78d42/FLAG98eaf34eb [2021-11-02 22:30:09,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/data/da3bb811c/170d2c10ae11456a98b0ff7ddcd78d42 [2021-11-02 22:30:09,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:30:09,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:30:09,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:30:09,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:30:09,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:30:09,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1e899e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09, skipping insertion in model container [2021-11-02 22:30:09,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:30:09,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:30:09,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:30:09,835 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:30:09,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:30:09,883 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:30:09,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09 WrapperNode [2021-11-02 22:30:09,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:30:09,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:30:09,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:30:09,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:30:09,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:30:09,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:30:09,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:30:09,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:30:09,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:30:09,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:30:09,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:30:09,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:30:09,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (1/1) ... [2021-11-02 22:30:09,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:30:09,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:10,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:30:10,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:30:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:30:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:30:10,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:30:10,251 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-02 22:30:10,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:30:10 BoogieIcfgContainer [2021-11-02 22:30:10,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:30:10,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:30:10,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:30:10,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:30:10,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:30:09" (1/3) ... [2021-11-02 22:30:10,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd2482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:30:10, skipping insertion in model container [2021-11-02 22:30:10,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:09" (2/3) ... [2021-11-02 22:30:10,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd2482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:30:10, skipping insertion in model container [2021-11-02 22:30:10,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:30:10" (3/3) ... [2021-11-02 22:30:10,269 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2021-11-02 22:30:10,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:30:10,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:30:10,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:30:10,367 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:30:10,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:30:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 22:30:10,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:10,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 22:30:10,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-02 22:30:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 29684906, now seen corresponding path program 1 times [2021-11-02 22:30:10,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:10,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015081156] [2021-11-02 22:30:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:10,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:10,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:10,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015081156] [2021-11-02 22:30:10,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015081156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:30:10,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:30:10,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:30:10,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117883206] [2021-11-02 22:30:10,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:30:10,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:30:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:30:10,726 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:10,895 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-11-02 22:30:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:30:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-02 22:30:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:10,912 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:30:10,912 INFO L226 Difference]: Without dead ends: 18 [2021-11-02 22:30:10,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:30:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-02 22:30:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-02 22:30:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-11-02 22:30:10,947 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 5 [2021-11-02 22:30:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:10,948 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-02 22:30:10,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-11-02 22:30:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:30:10,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:10,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:30:10,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:30:10,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-02 22:30:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash 920232138, now seen corresponding path program 1 times [2021-11-02 22:30:10,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:10,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137832612] [2021-11-02 22:30:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:10,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:10,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:10,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137832612] [2021-11-02 22:30:10,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137832612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:30:10,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:30:10,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-02 22:30:10,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468320947] [2021-11-02 22:30:10,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:30:10,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:10,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:30:10,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:30:10,983 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-02 22:30:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:10,996 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2021-11-02 22:30:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:30:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-02 22:30:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:10,997 INFO L225 Difference]: With dead ends: 17 [2021-11-02 22:30:10,997 INFO L226 Difference]: Without dead ends: 16 [2021-11-02 22:30:10,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:30:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-02 22:30:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-02 22:30:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2021-11-02 22:30:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-02 22:30:11,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 6 [2021-11-02 22:30:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:11,003 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-02 22:30:11,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-02 22:30:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-02 22:30:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:30:11,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:11,004 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:11,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:30:11,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-02 22:30:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:11,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1121244256, now seen corresponding path program 1 times [2021-11-02 22:30:11,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:11,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306889357] [2021-11-02 22:30:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:11,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:11,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:11,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306889357] [2021-11-02 22:30:11,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306889357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:11,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066430926] [2021-11-02 22:30:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:11,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:11,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:11,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:30:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:11,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:30:11,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:11,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066430926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:11,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:11,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-02 22:30:11,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923536109] [2021-11-02 22:30:11,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:30:11,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:11,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:30:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:30:11,272 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-02 22:30:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:11,326 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-11-02 22:30:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:30:11,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-02 22:30:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:11,332 INFO L225 Difference]: With dead ends: 28 [2021-11-02 22:30:11,333 INFO L226 Difference]: Without dead ends: 27 [2021-11-02 22:30:11,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:30:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-02 22:30:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-11-02 22:30:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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) [2021-11-02 22:30:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-02 22:30:11,350 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-11-02 22:30:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:11,351 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-02 22:30:11,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-02 22:30:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-02 22:30:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:30:11,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:11,352 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1] [2021-11-02 22:30:11,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:11,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-02 22:30:11,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-02 22:30:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1772875545, now seen corresponding path program 2 times [2021-11-02 22:30:11,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:11,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131247643] [2021-11-02 22:30:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:11,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:11,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:11,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131247643] [2021-11-02 22:30:11,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131247643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:11,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144444536] [2021-11-02 22:30:11,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:30:11,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:11,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:11,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:11,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:30:11,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:30:11,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:30:11,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 22:30:11,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144444536] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:11,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:11,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2021-11-02 22:30:11,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538177749] [2021-11-02 22:30:11,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:30:11,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:11,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:30:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:30:11,849 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-11-02 22:30:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:12,092 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-11-02 22:30:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:30:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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 15 [2021-11-02 22:30:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:12,094 INFO L225 Difference]: With dead ends: 39 [2021-11-02 22:30:12,094 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:30:12,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:30:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:30:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:30:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:30:12,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-02 22:30:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:12,097 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:30:12,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-11-02 22:30:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:30:12,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:30:12,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-02 22:30:12,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-02 22:30:12,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:12,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:12,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:30:12,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:30:12,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:30:12,381 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-11-02 22:30:12,381 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:30:12,382 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-11-02 22:30:12,382 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 25) no Hoare annotation was computed. [2021-11-02 22:30:12,382 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~M~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-11-02 22:30:12,382 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 25) no Hoare annotation was computed. [2021-11-02 22:30:12,383 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-11-02 22:30:12,383 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:30:12,383 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:30:12,383 INFO L853 garLoopResultBuilder]: At program point L26(lines 13 27) the Hoare annotation is: (or (<= ULTIMATE.start_main_~M~0 2147483647) (< ULTIMATE.start_main_~M~0 (+ ULTIMATE.start_main_~x~0 1))) [2021-11-02 22:30:12,384 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-11-02 22:30:12,384 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-11-02 22:30:12,387 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-02 22:30:12,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:30:12,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:30:12 BoogieIcfgContainer [2021-11-02 22:30:12,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:30:12,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:30:12,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:30:12,412 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:30:12,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:30:10" (3/4) ... [2021-11-02 22:30:12,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:30:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-02 22:30:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-02 22:30:12,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:30:12,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:30:12,486 INFO L168 Benchmark]: Toolchain (without parser) took 2928.75 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 66.0 MB in the beginning and 91.6 MB in the end (delta: -25.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:30:12,487 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 81.9 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:30:12,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.72 ms. Allocated memory is still 104.9 MB. Free memory was 65.7 MB in the beginning and 81.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:30:12,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 104.9 MB. Free memory was 81.4 MB in the beginning and 80.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:30:12,488 INFO L168 Benchmark]: Boogie Preprocessor took 28.41 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 79.4 MB in the end (delta: 777.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:30:12,489 INFO L168 Benchmark]: RCFGBuilder took 295.32 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 71.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:30:12,490 INFO L168 Benchmark]: TraceAbstraction took 2151.03 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 70.6 MB in the beginning and 93.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:30:12,490 INFO L168 Benchmark]: Witness Printer took 73.36 ms. Allocated memory is still 138.4 MB. Free memory was 93.7 MB in the beginning and 91.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:30:12,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 81.9 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.72 ms. Allocated memory is still 104.9 MB. Free memory was 65.7 MB in the beginning and 81.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 104.9 MB. Free memory was 81.4 MB in the beginning and 80.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.41 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 79.4 MB in the end (delta: 777.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.32 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 71.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2151.03 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 70.6 MB in the beginning and 93.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 73.36 ms. Allocated memory is still 138.4 MB. Free memory was 93.7 MB in the beginning and 91.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 35 SDslu, 10 SDs, 0 SdLazy, 102 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 230 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 1 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 28/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: M <= 2147483647 && 0 <= x + 2147483648 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: M <= 2147483647 || M < x + 1 RESULT: Ultimate proved your program to be correct! [2021-11-02 22:30:12,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62878d85-c516-430d-8cf0-5b741de8a730/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE