./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/odd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/odd.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6cee2eaa0864f982f519c81781a8b70fdf65a1ebdd4653c4d9daed474142246 --- 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-e04fb08 [2022-11-16 16:10:24,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:10:24,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:10:24,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:10:24,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:10:24,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:10:24,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:10:24,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:10:24,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:10:24,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:10:24,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:10:24,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:10:24,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:10:24,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:10:24,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:10:24,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:10:24,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:10:24,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:10:24,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:10:24,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:10:24,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:10:24,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:10:24,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:10:24,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:10:24,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:10:24,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:10:24,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:10:24,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:10:24,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:10:24,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:10:24,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:10:24,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:10:24,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:10:24,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:10:24,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:10:24,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:10:24,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:10:24,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:10:24,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:10:24,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:10:24,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:10:24,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:10:24,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:10:24,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:10:24,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:10:24,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:10:24,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:10:24,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:10:24,997 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:10:24,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:10:24,998 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:10:24,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:10:24,998 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:10:24,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:10:24,999 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:10:24,999 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:10:24,999 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:10:25,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:10:25,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:10:25,001 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:10:25,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:10:25,003 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:10:25,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:10:25,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:10:25,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:10:25,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:10:25,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:10:25,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:10:25,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:10:25,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:10:25,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:10:25,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:10:25,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:10:25,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:10:25,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:10:25,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:10:25,009 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:10:25,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:10:25,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:10:25,010 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:10:25,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:10:25,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:10:25,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:10:25,011 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_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6cee2eaa0864f982f519c81781a8b70fdf65a1ebdd4653c4d9daed474142246 [2022-11-16 16:10:25,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:10:25,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:10:25,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:10:25,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:10:25,353 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:10:25,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/loop-invariants/odd.c [2022-11-16 16:10:25,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/data/2fde6a8ae/8686778412da4bc994b172ec8c52cd8d/FLAG38531a3fd [2022-11-16 16:10:25,913 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:10:25,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/sv-benchmarks/c/loop-invariants/odd.c [2022-11-16 16:10:25,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/data/2fde6a8ae/8686778412da4bc994b172ec8c52cd8d/FLAG38531a3fd [2022-11-16 16:10:26,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/data/2fde6a8ae/8686778412da4bc994b172ec8c52cd8d [2022-11-16 16:10:26,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:10:26,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:10:26,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:10:26,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:10:26,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:10:26,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae4eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26, skipping insertion in model container [2022-11-16 16:10:26,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:10:26,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:10:26,512 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/sv-benchmarks/c/loop-invariants/odd.c[350,363] [2022-11-16 16:10:26,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:10:26,534 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:10:26,547 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/sv-benchmarks/c/loop-invariants/odd.c[350,363] [2022-11-16 16:10:26,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:10:26,563 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:10:26,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26 WrapperNode [2022-11-16 16:10:26,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:10:26,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:10:26,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:10:26,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:10:26,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,602 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-16 16:10:26,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:10:26,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:10:26,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:10:26,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:10:26,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:10:26,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:10:26,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:10:26,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:10:26,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (1/1) ... [2022-11-16 16:10:26,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:10:26,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:10:26,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:10:26,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:10:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:10:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:10:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:10:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:10:26,768 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:10:26,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:10:26,918 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:10:26,935 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:10:26,935 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:10:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:10:26 BoogieIcfgContainer [2022-11-16 16:10:26,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:10:26,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:10:26,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:10:26,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:10:26,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:10:26" (1/3) ... [2022-11-16 16:10:26,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440263c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:10:26, skipping insertion in model container [2022-11-16 16:10:26,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:26" (2/3) ... [2022-11-16 16:10:26,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440263c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:10:26, skipping insertion in model container [2022-11-16 16:10:26,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:10:26" (3/3) ... [2022-11-16 16:10:26,949 INFO L112 eAbstractionObserver]: Analyzing ICFG odd.c [2022-11-16 16:10:26,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:10:26,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:10:27,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:10:27,069 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;@35c8655a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:10:27,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:10:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:10:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 16:10:27,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:27,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 16:10:27,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 58614883, now seen corresponding path program 1 times [2022-11-16 16:10:27,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:27,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112459887] [2022-11-16 16:10:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:10:27,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:27,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112459887] [2022-11-16 16:10:27,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112459887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:27,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:10:27,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:10:27,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602180798] [2022-11-16 16:10:27,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:10:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:10:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:10:27,329 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:10:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:27,373 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-16 16:10:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:10:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 16:10:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:27,399 INFO L225 Difference]: With dead ends: 15 [2022-11-16 16:10:27,399 INFO L226 Difference]: Without dead ends: 7 [2022-11-16 16:10:27,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:10:27,406 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:27,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:10:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-16 16:10:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-16 16:10:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2022-11-16 16:10:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-16 16:10:27,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-16 16:10:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-16 16:10:27,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:10:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-16 16:10:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 16:10:27,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:27,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 16:10:27,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:10:27,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1810415056, now seen corresponding path program 1 times [2022-11-16 16:10:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:27,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913007638] [2022-11-16 16:10:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:10:27,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:27,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913007638] [2022-11-16 16:10:27,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913007638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:27,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:10:27,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:10:27,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098305477] [2022-11-16 16:10:27,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:27,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:10:27,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:10:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:10:27,822 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:10:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:27,876 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-16 16:10:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:10:27,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 16:10:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:27,878 INFO L225 Difference]: With dead ends: 13 [2022-11-16 16:10:27,878 INFO L226 Difference]: Without dead ends: 9 [2022-11-16 16:10:27,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:10:27,880 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:27,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:10:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-16 16:10:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-16 16:10:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-16 16:10:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 16:10:27,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-11-16 16:10:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:27,894 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 16:10:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:10:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 16:10:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:10:27,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:27,895 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:27,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:10:27,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:10:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash 395788235, now seen corresponding path program 1 times [2022-11-16 16:10:27,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:27,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677557449] [2022-11-16 16:10:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:27,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:10:28,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:28,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677557449] [2022-11-16 16:10:28,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677557449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:10:28,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095091825] [2022-11-16 16:10:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:28,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:10:28,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:10:28,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:10:28,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:10:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 16:10:28,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:10:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:10:28,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:10:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:10:28,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095091825] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 16:10:28,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:10:28,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-16 16:10:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139282564] [2022-11-16 16:10:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:10:28,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:10:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:10:28,406 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 16:10:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:28,433 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-11-16 16:10:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:10:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 16:10:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:28,434 INFO L225 Difference]: With dead ends: 9 [2022-11-16 16:10:28,434 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:10:28,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:10:28,436 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:28,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:10:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:10:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:10:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:10:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:10:28,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-11-16 16:10:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:28,439 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:10:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 16:10:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:10:28,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:10:28,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:10:28,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:10:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 16:10:28,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 16:10:28,660 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 16:10:28,661 INFO L899 garLoopResultBuilder]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2022-11-16 16:10:28,662 INFO L895 garLoopResultBuilder]: At program point L13-3(lines 13 15) the Hoare annotation is: (not (= (let ((.cse0 (div |ULTIMATE.start_main_~x~0#1| 2))) (+ (* (div (+ |ULTIMATE.start_main_~x~0#1| (* (- 2) .cse0)) 4294967296) 4294967296) (* .cse0 2))) |ULTIMATE.start_main_~x~0#1|)) [2022-11-16 16:10:28,662 INFO L899 garLoopResultBuilder]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2022-11-16 16:10:28,662 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-16 16:10:28,663 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 16:10:28,663 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-11-16 16:10:28,663 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-16 16:10:28,665 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-11-16 16:10:28,671 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 16:10:28,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:10:28,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:10:28 BoogieIcfgContainer [2022-11-16 16:10:28,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:10:28,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:10:28,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:10:28,690 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:10:28,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:10:26" (3/4) ... [2022-11-16 16:10:28,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 16:10:28,704 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-16 16:10:28,704 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 16:10:28,704 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 16:10:28,705 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 16:10:28,705 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 16:10:28,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:10:28,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:10:28,741 INFO L158 Benchmark]: Toolchain (without parser) took 2437.01ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.6MB in the beginning and 71.8MB in the end (delta: -16.2MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2022-11-16 16:10:28,742 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:10:28,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.63ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.3MB in the beginning and 88.1MB in the end (delta: -32.7MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-11-16 16:10:28,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.10ms. Allocated memory is still 111.1MB. Free memory was 88.1MB in the beginning and 86.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:10:28,746 INFO L158 Benchmark]: Boogie Preprocessor took 21.28ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 85.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:10:28,749 INFO L158 Benchmark]: RCFGBuilder took 312.96ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 76.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:10:28,750 INFO L158 Benchmark]: TraceAbstraction took 1747.65ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 73.9MB in the end (delta: 1.4MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-16 16:10:28,750 INFO L158 Benchmark]: Witness Printer took 51.06ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:10:28,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.63ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.3MB in the beginning and 88.1MB in the end (delta: -32.7MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.10ms. Allocated memory is still 111.1MB. Free memory was 88.1MB in the beginning and 86.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.28ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 85.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.96ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 76.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1747.65ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 73.9MB in the end (delta: 1.4MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Witness Printer took 51.06ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 2 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !((x + -2 * (x / 2)) / 4294967296 * 4294967296 + x / 2 * 2 == x) RESULT: Ultimate proved your program to be correct! [2022-11-16 16:10:28,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6885d67e-1c41-4f0d-bf1c-cfc504fba984/bin/utaipan-Xvt2sAort0/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 Result: TRUE