./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R --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 a5b85953a66eab1226d3d603377a1d8dc97a5642c3836ceffbc35c9a4b84779a --- 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-38b53e6 [2022-11-25 16:42:47,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:42:47,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:42:47,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:42:47,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:42:47,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:42:47,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:42:47,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:42:47,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:42:47,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:42:47,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:42:47,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:42:47,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:42:47,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:42:47,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:42:47,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:42:47,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:42:47,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:42:47,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:42:47,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:42:47,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:42:47,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:42:47,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:42:47,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:42:47,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:42:47,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:42:47,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:42:47,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:42:47,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:42:47,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:42:47,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:42:47,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:42:47,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:42:47,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:42:47,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:42:47,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:42:47,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:42:47,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:42:47,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:42:47,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:42:47,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:42:47,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 16:42:47,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:42:47,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:42:47,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:42:47,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:42:47,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:42:47,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:42:47,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:42:47,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:42:47,686 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:42:47,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:42:47,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:42:47,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:42:47,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:42:47,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:42:47,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:42:47,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:42:47,688 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:42:47,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:42:47,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:42:47,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:42:47,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:42:47,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:42:47,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:42:47,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:47,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:42:47,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:42:47,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:42:47,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:42:47,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:42:47,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:42:47,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:42:47,692 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:42:47,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:42:47,693 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5b85953a66eab1226d3d603377a1d8dc97a5642c3836ceffbc35c9a4b84779a [2022-11-25 16:42:47,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:42:48,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:42:48,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:42:48,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:42:48,035 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:42:48,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.04.c [2022-11-25 16:42:51,053 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:42:51,303 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:42:51,304 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.04.c [2022-11-25 16:42:51,310 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/data/f73cff18b/1eada495e1ab40399522c4fbfebf68fa/FLAG0177f28a0 [2022-11-25 16:42:51,333 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/data/f73cff18b/1eada495e1ab40399522c4fbfebf68fa [2022-11-25 16:42:51,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:42:51,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:42:51,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:51,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:42:51,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:42:51,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b066fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51, skipping insertion in model container [2022-11-25 16:42:51,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:42:51,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:42:51,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:51,581 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:42:51,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:51,615 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:42:51,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51 WrapperNode [2022-11-25 16:42:51,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:51,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:51,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:42:51,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:42:51,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,655 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-25 16:42:51,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:51,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:42:51,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:42:51,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:42:51,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,676 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:42:51,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:42:51,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:42:51,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:42:51,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (1/1) ... [2022-11-25 16:42:51,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:51,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:42:51,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:42:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:42:51,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:42:51,856 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:42:51,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:42:51,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:42:51,967 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:42:51,967 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 16:42:51,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:51 BoogieIcfgContainer [2022-11-25 16:42:51,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:42:51,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:42:51,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:42:51,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:42:51,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:42:51" (1/3) ... [2022-11-25 16:42:51,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30af6fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:51, skipping insertion in model container [2022-11-25 16:42:51,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:51" (2/3) ... [2022-11-25 16:42:51,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30af6fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:51, skipping insertion in model container [2022-11-25 16:42:51,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:51" (3/3) ... [2022-11-25 16:42:51,980 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.04.c [2022-11-25 16:42:52,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:42:52,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 16:42:52,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:42:52,062 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fbcd143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:42:52,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 16:42:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 16:42:52,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:52,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 16:42:52,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 16:42:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-11-25 16:42:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:52,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351427631] [2022-11-25 16:42:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:52,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:42:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:52,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:42:52,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:42:52,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-25 16:42:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-25 16:42:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-25 16:42:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-25 16:42:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-25 16:42:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-25 16:42:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-25 16:42:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-25 16:42:52,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:42:52,220 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 16:42:52,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:42:52,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:42:52 BoogieIcfgContainer [2022-11-25 16:42:52,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:42:52,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:42:52,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:42:52,245 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:42:52,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:51" (3/4) ... [2022-11-25 16:42:52,247 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 16:42:52,277 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:42:52,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:42:52,279 INFO L158 Benchmark]: Toolchain (without parser) took 940.31ms. Allocated memory is still 184.5MB. Free memory was 151.0MB in the beginning and 114.0MB in the end (delta: 37.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-25 16:42:52,279 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 81.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:42:52,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.56ms. Allocated memory is still 184.5MB. Free memory was 150.5MB in the beginning and 141.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:42:52,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 184.5MB. Free memory was 141.3MB in the beginning and 140.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:42:52,281 INFO L158 Benchmark]: Boogie Preprocessor took 24.53ms. Allocated memory is still 184.5MB. Free memory was 140.2MB in the beginning and 139.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:52,282 INFO L158 Benchmark]: RCFGBuilder took 288.06ms. Allocated memory is still 184.5MB. Free memory was 139.2MB in the beginning and 129.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 16:42:52,282 INFO L158 Benchmark]: TraceAbstraction took 271.36ms. Allocated memory is still 184.5MB. Free memory was 128.7MB in the beginning and 115.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 16:42:52,283 INFO L158 Benchmark]: Witness Printer took 33.53ms. Allocated memory is still 184.5MB. Free memory was 115.5MB in the beginning and 114.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:52,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 81.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.56ms. Allocated memory is still 184.5MB. Free memory was 150.5MB in the beginning and 141.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 184.5MB. Free memory was 141.3MB in the beginning and 140.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.53ms. Allocated memory is still 184.5MB. Free memory was 140.2MB in the beginning and 139.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.06ms. Allocated memory is still 184.5MB. Free memory was 139.2MB in the beginning and 129.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 271.36ms. Allocated memory is still 184.5MB. Free memory was 128.7MB in the beginning and 115.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 33.53ms. Allocated memory is still 184.5MB. Free memory was 115.5MB in the beginning and 114.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] x + y VAL [x=-1, y=-2147483648, z=0] - UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 8 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=23occurred 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! [2022-11-25 16:42:52,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686bcd11-5010-4333-b6bf-3c98445341c4/bin/uautomizer-ZsLfNo2U6R/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)