./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7646a22882710466ec3244f9455a19a1dbe784d959581f36adf578939304de7 --- 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 22:30:56,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:30:56,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:30:56,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:30:56,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:30:56,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:30:56,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:30:56,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:30:56,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:30:56,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:30:56,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:30:56,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:30:56,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:30:56,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:30:56,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:30:56,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:30:56,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:30:56,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:30:56,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:30:56,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:30:56,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:30:56,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:30:56,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:30:56,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:30:56,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:30:56,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:30:56,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:30:56,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:30:56,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:30:56,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:30:56,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:30:56,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:30:56,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:30:56,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:30:56,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:30:56,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:30:56,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:30:56,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:30:56,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:30:56,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:30:56,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:30:56,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 22:30:56,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:30:56,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:30:56,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:30:56,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:30:56,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:30:56,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:30:56,782 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:30:56,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:30:56,782 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:30:56,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:30:56,783 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:30:56,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:30:56,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:30:56,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:30:56,783 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:30:56,784 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:30:56,784 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:30:56,784 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:30:56,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:30:56,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:30:56,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:30:56,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:30:56,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:30:56,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:30:56,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:30:56,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:30:56,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:30:56,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:30:56,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:30:56,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:30:56,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:30:56,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:56,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:30:56,787 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:30:56,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:30:56,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:30:56,788 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:30:56,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:30:56,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:30:56,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:30:56,789 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_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7646a22882710466ec3244f9455a19a1dbe784d959581f36adf578939304de7 [2022-11-25 22:30:57,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:30:57,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:30:57,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:30:57,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:30:57,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:30:57,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2022-11-25 22:31:00,229 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:31:00,451 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:31:00,452 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2022-11-25 22:31:00,459 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/data/7970bddc5/8e1ef33b904a47749525caf6ab72713f/FLAGaf2912649 [2022-11-25 22:31:00,476 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/data/7970bddc5/8e1ef33b904a47749525caf6ab72713f [2022-11-25 22:31:00,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:31:00,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:31:00,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:31:00,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:31:00,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:31:00,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4dd571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00, skipping insertion in model container [2022-11-25 22:31:00,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:31:00,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:31:00,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:31:00,721 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:31:00,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:31:00,746 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:31:00,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00 WrapperNode [2022-11-25 22:31:00,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:31:00,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:31:00,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:31:00,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:31:00,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,777 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 17 [2022-11-25 22:31:00,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:31:00,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:31:00,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:31:00,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:31:00,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:31:00,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:31:00,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:31:00,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:31:00,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (1/1) ... [2022-11-25 22:31:00,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:31:00,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:00,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:31:00,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:31:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:31:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:31:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure r1 [2022-11-25 22:31:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure r1 [2022-11-25 22:31:00,931 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:31:00,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:31:01,039 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:31:01,055 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:31:01,055 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:31:01,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:31:01 BoogieIcfgContainer [2022-11-25 22:31:01,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:31:01,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:31:01,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:31:01,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:31:01,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:31:00" (1/3) ... [2022-11-25 22:31:01,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caa65f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:31:01, skipping insertion in model container [2022-11-25 22:31:01,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:00" (2/3) ... [2022-11-25 22:31:01,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caa65f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:31:01, skipping insertion in model container [2022-11-25 22:31:01,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:31:01" (3/3) ... [2022-11-25 22:31:01,067 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex1.c [2022-11-25 22:31:01,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:31:01,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 22:31:01,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:31:01,151 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;@4e77ca1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:31:01,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 22:31:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:31:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:31:01,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:01,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 22:31:01,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-25 22:31:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2095664905, now seen corresponding path program 1 times [2022-11-25 22:31:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:01,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428601105] [2022-11-25 22:31:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:01,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:01,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:01,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428601105] [2022-11-25 22:31:01,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428601105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:01,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:01,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:31:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864329753] [2022-11-25 22:31:01,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:01,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:31:01,467 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:01,651 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-25 22:31:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:31:01,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 22:31:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:01,662 INFO L225 Difference]: With dead ends: 46 [2022-11-25 22:31:01,662 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 22:31:01,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:31:01,669 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:01,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 35 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:31:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 22:31:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-11-25 22:31:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-25 22:31:01,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 6 [2022-11-25 22:31:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:01,709 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-25 22:31:01,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-25 22:31:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:31:01,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:01,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:01,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:31:01,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-25 22:31:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash 541102670, now seen corresponding path program 1 times [2022-11-25 22:31:01,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:01,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731931189] [2022-11-25 22:31:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:01,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:01,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731931189] [2022-11-25 22:31:01,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731931189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:01,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:01,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:31:01,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912030247] [2022-11-25 22:31:01,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:01,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:31:01,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:31:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:31:01,799 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:01,883 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-25 22:31:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:31:01,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 22:31:01,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:01,886 INFO L225 Difference]: With dead ends: 23 [2022-11-25 22:31:01,886 INFO L226 Difference]: Without dead ends: 22 [2022-11-25 22:31:01,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:01,888 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:01,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:31:01,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-25 22:31:01,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-25 22:31:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-25 22:31:01,894 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 7 [2022-11-25 22:31:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:01,894 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-25 22:31:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-25 22:31:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:31:01,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:01,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:01,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:31:01,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-25 22:31:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 308624880, now seen corresponding path program 1 times [2022-11-25 22:31:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337272174] [2022-11-25 22:31:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:31:01,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:31:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:31:01,936 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:31:01,936 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:31:01,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-25 22:31:01,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-25 22:31:01,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-25 22:31:01,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-25 22:31:01,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-25 22:31:01,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-25 22:31:01,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:31:01,945 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 22:31:01,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:31:01,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:31:01 BoogieIcfgContainer [2022-11-25 22:31:01,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:31:01,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:31:01,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:31:01,971 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:31:01,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:31:01" (3/4) ... [2022-11-25 22:31:01,974 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 22:31:02,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:31:02,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:31:02,007 INFO L158 Benchmark]: Toolchain (without parser) took 1523.62ms. Allocated memory is still 148.9MB. Free memory was 106.7MB in the beginning and 62.7MB in the end (delta: 44.0MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-11-25 22:31:02,007 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:31:02,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.80ms. Allocated memory is still 148.9MB. Free memory was 106.0MB in the beginning and 115.8MB in the end (delta: -9.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:31:02,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.08ms. Allocated memory is still 148.9MB. Free memory was 115.8MB in the beginning and 114.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:31:02,009 INFO L158 Benchmark]: Boogie Preprocessor took 17.56ms. Allocated memory is still 148.9MB. Free memory was 114.4MB in the beginning and 113.7MB in the end (delta: 723.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:31:02,009 INFO L158 Benchmark]: RCFGBuilder took 261.96ms. Allocated memory is still 148.9MB. Free memory was 113.7MB in the beginning and 103.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 22:31:02,010 INFO L158 Benchmark]: TraceAbstraction took 909.76ms. Allocated memory is still 148.9MB. Free memory was 102.5MB in the beginning and 64.1MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-25 22:31:02,010 INFO L158 Benchmark]: Witness Printer took 35.42ms. Allocated memory is still 148.9MB. Free memory was 64.1MB in the beginning and 62.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:31:02,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.80ms. Allocated memory is still 148.9MB. Free memory was 106.0MB in the beginning and 115.8MB in the end (delta: -9.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.08ms. Allocated memory is still 148.9MB. Free memory was 115.8MB in the beginning and 114.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.56ms. Allocated memory is still 148.9MB. Free memory was 114.4MB in the beginning and 113.7MB in the end (delta: 723.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.96ms. Allocated memory is still 148.9MB. Free memory was 113.7MB in the beginning and 103.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 909.76ms. Allocated memory is still 148.9MB. Free memory was 102.5MB in the beginning and 64.1MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 35.42ms. Allocated memory is still 148.9MB. Free memory was 64.1MB in the beginning and 62.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int ls = __VERIFIER_nondet_int(); [L27] COND TRUE ls >= 0 [L28] CALL rev(ls) [L22] CALL r1(ls,0) VAL [\old(a)=0, \old(ls)=2147483647] [L14] COND FALSE !(ls == 0) VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls-1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls+1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: 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 2 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 10 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 22:31:02,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db4b626-5212-4369-b500-8fdb688ec793/bin/utaipan-ByfvJB40ur/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)