./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ --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 75b534c935ab508baff1f3534f1632f9df385ba556820943b3d6e8e44d3f8246 --- 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-dbf71c6-m [2022-10-17 10:59:05,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:59:05,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:59:05,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:59:05,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:59:05,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:59:05,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:59:05,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:59:05,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:59:05,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:59:05,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:59:05,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:59:05,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:59:05,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:59:05,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:59:05,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:59:05,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:59:05,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:59:05,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:59:05,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:59:05,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:59:05,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:59:05,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:59:05,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:59:05,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:59:05,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:59:05,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:59:05,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:59:05,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:59:05,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:59:05,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:59:05,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:59:05,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:59:05,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:59:05,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:59:05,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:59:05,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:59:05,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:59:05,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:59:05,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:59:05,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:59:05,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-10-17 10:59:05,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:59:05,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:59:05,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:59:05,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:59:05,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:59:05,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:59:05,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:59:05,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:59:05,246 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:59:05,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:59:05,247 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:59:05,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:59:05,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:59:05,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:59:05,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:59:05,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:59:05,249 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 10:59:05,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:59:05,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:59:05,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:59:05,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:59:05,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:59:05,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:59:05,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:59:05,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:59:05,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:59:05,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:59:05,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:59:05,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:59:05,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:59:05,254 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_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b534c935ab508baff1f3534f1632f9df385ba556820943b3d6e8e44d3f8246 [2022-10-17 10:59:05,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:59:05,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:59:05,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:59:05,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:59:05,642 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:59:05,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.06.c [2022-10-17 10:59:05,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/data/2dc51c00f/bfab5e8fce4b461ca78188f892928802/FLAG7feb07826 [2022-10-17 10:59:06,280 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:59:06,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.06.c [2022-10-17 10:59:06,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/data/2dc51c00f/bfab5e8fce4b461ca78188f892928802/FLAG7feb07826 [2022-10-17 10:59:06,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/data/2dc51c00f/bfab5e8fce4b461ca78188f892928802 [2022-10-17 10:59:06,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:59:06,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:59:06,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:59:06,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:59:06,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:59:06,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:06,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5391e9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06, skipping insertion in model container [2022-10-17 10:59:06,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:06,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:59:06,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:59:06,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:59:06,929 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:59:06,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:59:06,957 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:59:06,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06 WrapperNode [2022-10-17 10:59:06,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:59:06,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:59:06,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:59:06,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:59:06,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:06,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:06,993 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-10-17 10:59:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:59:06,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:59:06,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:59:06,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:59:07,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,014 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:59:07,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:59:07,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:59:07,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:59:07,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (1/1) ... [2022-10-17 10:59:07,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:59:07,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:59:07,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:59:07,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:59:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:59:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:59:07,240 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:59:07,243 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:59:07,395 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:59:07,404 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:59:07,404 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:59:07,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:59:07 BoogieIcfgContainer [2022-10-17 10:59:07,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:59:07,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:59:07,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:59:07,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:59:07,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:59:06" (1/3) ... [2022-10-17 10:59:07,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400d66e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:59:07, skipping insertion in model container [2022-10-17 10:59:07,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:06" (2/3) ... [2022-10-17 10:59:07,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400d66e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:59:07, skipping insertion in model container [2022-10-17 10:59:07,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:59:07" (3/3) ... [2022-10-17 10:59:07,426 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.06.c [2022-10-17 10:59:07,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:59:07,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-17 10:59:07,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:59:07,526 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67e4842e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:59:07,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-17 10:59:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:59:07,539 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:59:07,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:59:07,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-17 10:59:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-10-17 10:59:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:07,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707229664] [2022-10-17 10:59:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:59:07,669 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:59:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:59:07,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:59:07,697 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:59:07,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-10-17 10:59:07,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-10-17 10:59:07,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-10-17 10:59:07,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-10-17 10:59:07,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-10-17 10:59:07,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-10-17 10:59:07,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-10-17 10:59:07,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-10-17 10:59:07,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-10-17 10:59:07,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-10-17 10:59:07,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-10-17 10:59:07,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-10-17 10:59:07,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:59:07,711 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 10:59:07,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:59:07,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:59:07 BoogieIcfgContainer [2022-10-17 10:59:07,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:59:07,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:59:07,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:59:07,745 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:59:07,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:59:07" (3/4) ... [2022-10-17 10:59:07,749 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 10:59:07,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:59:07,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:59:07,816 INFO L158 Benchmark]: Toolchain (without parser) took 1178.65ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.4MB in the beginning and 85.2MB in the end (delta: -32.8MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-10-17 10:59:07,816 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:59:07,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.08ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 85.4MB in the end (delta: -33.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-10-17 10:59:07,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.13ms. Allocated memory is still 109.1MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:59:07,825 INFO L158 Benchmark]: Boogie Preprocessor took 21.57ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 83.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:59:07,825 INFO L158 Benchmark]: RCFGBuilder took 390.25ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 73.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:59:07,826 INFO L158 Benchmark]: TraceAbstraction took 328.39ms. Allocated memory is still 109.1MB. Free memory was 72.5MB in the beginning and 59.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 10:59:07,826 INFO L158 Benchmark]: Witness Printer took 69.54ms. Allocated memory is still 109.1MB. Free memory was 59.6MB in the beginning and 85.6MB in the end (delta: -26.0MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-10-17 10:59:07,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.08ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 85.4MB in the end (delta: -33.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.13ms. Allocated memory is still 109.1MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.57ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 83.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 390.25ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 73.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 328.39ms. Allocated memory is still 109.1MB. Free memory was 72.5MB in the beginning and 59.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 69.54ms. Allocated memory is still 109.1MB. Free memory was 59.6MB in the beginning and 85.6MB in the end (delta: -26.0MB). Peak memory consumption was 6.0MB. 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: 29]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int x, y, oldx; [L27] x = __VERIFIER_nondet_int() [L28] y = __VERIFIER_nondet_int() [L29] 4*x VAL [x=536870912, y=0] - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 32]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 32]: 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, 31 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=31occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2022-10-17 10:59:07,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee74bba7-30fb-4801-bea6-8e250191761a/bin/uautomizer-J5u9QxTXDZ/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)