./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/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_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/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 32bit --witnessprinter.graph.data.programhash 007fc8a389a67fb47c7d326d3f1d284696dfe5de13661e77d6d1bf7cce285194 --- 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 [2022-11-26 00:54:25,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:54:25,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:54:25,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:54:25,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:54:25,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:54:25,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:54:25,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:54:25,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:54:25,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:54:25,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:54:25,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:54:25,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:54:25,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:54:25,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:54:25,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:54:25,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:54:25,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:54:25,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:54:25,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:54:25,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:54:25,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:54:25,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:54:25,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:54:25,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:54:25,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:54:25,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:54:25,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:54:25,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:54:25,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:54:25,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:54:25,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:54:25,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:54:25,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:54:25,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:54:25,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:54:25,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:54:25,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:54:25,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:54:25,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:54:25,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:54:25,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:54:25,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:54:25,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:54:25,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:54:25,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:54:25,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:54:25,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:54:25,445 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:54:25,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:54:25,446 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:54:25,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:54:25,448 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:54:25,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:54:25,448 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:54:25,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:54:25,449 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:54:25,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:54:25,449 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:54:25,450 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:54:25,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:54:25,451 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:54:25,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:54:25,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:54:25,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:54:25,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:54:25,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:54:25,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:54:25,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:54:25,454 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:54:25,455 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:54:25,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:54:25,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:54:25,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:54:25,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:54:25,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:54:25,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:54:25,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:54:25,457 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:54:25,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:54:25,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:54:25,458 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:54:25,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:54:25,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:54:25,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:54:25,459 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_258ae8fe-1c46-4957-9873-99665cc524a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 007fc8a389a67fb47c7d326d3f1d284696dfe5de13661e77d6d1bf7cce285194 [2022-11-26 00:54:25,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:54:25,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:54:25,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:54:25,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:54:25,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:54:25,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2022-11-26 00:54:29,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:54:29,535 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:54:29,536 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2022-11-26 00:54:29,548 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/data/783fe1579/7db28031edb14b8c849c394323e68b7f/FLAGf348c760e [2022-11-26 00:54:29,575 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/data/783fe1579/7db28031edb14b8c849c394323e68b7f [2022-11-26 00:54:29,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:54:29,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:54:29,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:54:29,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:54:29,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:54:29,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:54:29" (1/1) ... [2022-11-26 00:54:29,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbf678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:29, skipping insertion in model container [2022-11-26 00:54:29,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:54:29" (1/1) ... [2022-11-26 00:54:29,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:54:29,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:54:29,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:54:29,951 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:54:29,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:54:30,026 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:54:30,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30 WrapperNode [2022-11-26 00:54:30,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:54:30,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:54:30,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:54:30,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:54:30,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,100 INFO L138 Inliner]: procedures = 117, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-11-26 00:54:30,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:54:30,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:54:30,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:54:30,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:54:30,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,152 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:54:30,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:54:30,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:54:30,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:54:30,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (1/1) ... [2022-11-26 00:54:30,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:54:30,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:30,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:54:30,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:54:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:54:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:54:30,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:54:30,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:54:30,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:54:30,613 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:54:30,702 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:54:30,702 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:54:30,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:54:30 BoogieIcfgContainer [2022-11-26 00:54:30,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:54:30,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:54:30,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:54:30,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:54:30,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:54:29" (1/3) ... [2022-11-26 00:54:30,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5087f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:54:30, skipping insertion in model container [2022-11-26 00:54:30,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:54:30" (2/3) ... [2022-11-26 00:54:30,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5087f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:54:30, skipping insertion in model container [2022-11-26 00:54:30,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:54:30" (3/3) ... [2022-11-26 00:54:30,718 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca-2.i [2022-11-26 00:54:30,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:54:30,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:54:30,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:54:30,836 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;@64e3e8d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:54:30,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:54:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-11-26 00:54:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:54:30,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:30,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:54:30,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:54:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 102946, now seen corresponding path program 1 times [2022-11-26 00:54:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979261872] [2022-11-26 00:54:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:31,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:31,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979261872] [2022-11-26 00:54:31,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979261872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:31,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:54:31,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:54:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517545166] [2022-11-26 00:54:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:54:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:31,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:54:31,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:54:31,278 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-26 00:54:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:31,369 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2022-11-26 00:54:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:54:31,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-26 00:54:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:31,382 INFO L225 Difference]: With dead ends: 28 [2022-11-26 00:54:31,383 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 00:54:31,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:54:31,390 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:31,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:54:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 00:54:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-26 00:54:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) 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) [2022-11-26 00:54:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:54:31,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2022-11-26 00:54:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:31,443 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:54:31,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-26 00:54:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:54:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:54:31,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:31,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 00:54:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:54:31,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:54:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1228043309, now seen corresponding path program 1 times [2022-11-26 00:54:31,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761856871] [2022-11-26 00:54:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:31,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:31,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761856871] [2022-11-26 00:54:31,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761856871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:31,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145691502] [2022-11-26 00:54:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:31,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:31,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:31,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:54:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:31,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:54:31,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:31,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:54:31,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145691502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:31,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:54:31,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-26 00:54:31,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617509115] [2022-11-26 00:54:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:54:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:54:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:54:31,937 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-26 00:54:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:31,983 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-11-26 00:54:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:54:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2022-11-26 00:54:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:31,985 INFO L225 Difference]: With dead ends: 9 [2022-11-26 00:54:31,985 INFO L226 Difference]: Without dead ends: 8 [2022-11-26 00:54:31,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:54:31,987 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:31,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:54:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-26 00:54:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-26 00:54:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-11-26 00:54:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-26 00:54:31,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-26 00:54:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:31,992 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-26 00:54:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-26 00:54:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-26 00:54:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:54:31,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:31,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-26 00:54:32,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:54:32,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:32,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:54:32,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash 585363144, now seen corresponding path program 1 times [2022-11-26 00:54:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:32,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450577662] [2022-11-26 00:54:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:32,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:32,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450577662] [2022-11-26 00:54:32,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450577662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:32,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273806676] [2022-11-26 00:54:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:32,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:32,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:32,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:32,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:54:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:32,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:54:32,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:32,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:32,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273806676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:32,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2064110848] [2022-11-26 00:54:32,649 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 00:54:32,650 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:32,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:32,662 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:32,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:32,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-26 00:54:32,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:54:32,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:54:33,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:54:33,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:54:33,122 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:33,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2064110848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:33,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:33,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 12 [2022-11-26 00:54:33,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957910720] [2022-11-26 00:54:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:33,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:54:33,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:33,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:54:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:54:33,360 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-11-26 00:54:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:33,382 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-11-26 00:54:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:54:33,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 7 [2022-11-26 00:54:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:33,384 INFO L225 Difference]: With dead ends: 8 [2022-11-26 00:54:33,384 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:54:33,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:54:33,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:33,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:54:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:54:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:54:33,394 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) [2022-11-26 00:54:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:54:33,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-26 00:54:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:33,395 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:54:33,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-11-26 00:54:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:54:33,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:54:33,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:54:33,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:54:33,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 00:54:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:33,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:54:33,719 INFO L902 garLoopResultBuilder]: At program point L523(lines 513 524) the Hoare annotation is: true [2022-11-26 00:54:33,719 INFO L899 garLoopResultBuilder]: For program point L519(lines 519 520) no Hoare annotation was computed. [2022-11-26 00:54:33,720 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-26 00:54:33,720 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:54:33,720 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 522) no Hoare annotation was computed. [2022-11-26 00:54:33,720 INFO L899 garLoopResultBuilder]: For program point L516-1(lines 516 522) no Hoare annotation was computed. [2022-11-26 00:54:33,721 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-26 00:54:33,721 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:54:33,721 INFO L899 garLoopResultBuilder]: For program point L537-3(line 537) no Hoare annotation was computed. [2022-11-26 00:54:33,721 INFO L899 garLoopResultBuilder]: For program point L537-4(line 537) no Hoare annotation was computed. [2022-11-26 00:54:33,722 INFO L895 garLoopResultBuilder]: At program point L537-5(lines 537 540) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~length~0#1| 2147483647)) (.cse1 (<= |ULTIMATE.start_main_~n~0#1| 2147483647)) (.cse2 (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|)) (.cse4 (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|)) (.cse5 (<= |ULTIMATE.start_main_~c~0#1| 2147483647)) (.cse6 (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|)) (.cse7 (<= 1 |ULTIMATE.start_main_~n~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~length~0#1|)) (.cse9 (= |#NULL.offset| 0)) (.cse10 (<= 0 (+ |ULTIMATE.start_main_~c~0#1| 2147483648))) (.cse11 (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0)) (.cse12 (<= 0 |#StackHeapBarrier|)) (.cse13 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~i~0#1| 0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) [2022-11-26 00:54:33,722 INFO L899 garLoopResultBuilder]: For program point L518-2(lines 518 521) no Hoare annotation was computed. [2022-11-26 00:54:33,722 INFO L902 garLoopResultBuilder]: At program point L518-4(lines 518 521) the Hoare annotation is: true [2022-11-26 00:54:33,727 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 00:54:33,729 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:54:33,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:54:33 BoogieIcfgContainer [2022-11-26 00:54:33,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:54:33,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:54:33,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:54:33,751 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:54:33,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:54:30" (3/4) ... [2022-11-26 00:54:33,756 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:54:33,766 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-26 00:54:33,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-26 00:54:33,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:54:33,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:54:33,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:54:33,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:54:33,807 INFO L158 Benchmark]: Toolchain (without parser) took 4226.88ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 96.0MB in the beginning and 87.9MB in the end (delta: 8.1MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,808 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 146.8MB. Free memory was 84.5MB in the beginning and 84.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:54:33,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.41ms. Allocated memory is still 146.8MB. Free memory was 96.0MB in the beginning and 80.1MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.82ms. Allocated memory is still 146.8MB. Free memory was 80.1MB in the beginning and 78.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,809 INFO L158 Benchmark]: Boogie Preprocessor took 67.14ms. Allocated memory is still 146.8MB. Free memory was 78.0MB in the beginning and 76.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,815 INFO L158 Benchmark]: RCFGBuilder took 534.65ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 76.7MB in the beginning and 153.5MB in the end (delta: -76.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,816 INFO L158 Benchmark]: TraceAbstraction took 3042.31ms. Allocated memory is still 192.9MB. Free memory was 152.5MB in the beginning and 91.1MB in the end (delta: 61.5MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,816 INFO L158 Benchmark]: Witness Printer took 55.62ms. Allocated memory is still 192.9MB. Free memory was 91.1MB in the beginning and 87.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:54:33,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 146.8MB. Free memory was 84.5MB in the beginning and 84.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.41ms. Allocated memory is still 146.8MB. Free memory was 96.0MB in the beginning and 80.1MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.82ms. Allocated memory is still 146.8MB. Free memory was 80.1MB in the beginning and 78.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.14ms. Allocated memory is still 146.8MB. Free memory was 78.0MB in the beginning and 76.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.65ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 76.7MB in the beginning and 153.5MB in the end (delta: -76.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3042.31ms. Allocated memory is still 192.9MB. Free memory was 152.5MB in the beginning and 91.1MB in the end (delta: 61.5MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. * Witness Printer took 55.62ms. Allocated memory is still 192.9MB. Free memory was 91.1MB in the beginning and 87.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 99 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 4 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 2/13 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: OVERALL_TIME: 0.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 4, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 10, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 21, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 4, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 29, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 518]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 513]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: ((((((((((((((length <= 2147483647 && n <= 2147483647) && __builtin_alloca (n * sizeof(char)) == 0) && i == 0) && 0 <= nondetArea) && 0 <= nondetArea) && c <= 2147483647) && 0 <= __builtin_alloca (n * sizeof(char))) && 1 <= n) && 1 <= length) && #NULL == 0) && 0 <= c + 2147483648) && nondetArea <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((length <= 2147483647 && n <= 2147483647) && __builtin_alloca (n * sizeof(char)) == 0) && 0 <= nondetArea) && 1 <= i) && 0 <= nondetArea) && c <= 2147483647) && 0 <= __builtin_alloca (n * sizeof(char))) && 1 <= n) && 1 <= length) && #NULL == 0) && 0 <= c + 2147483648) && nondetArea <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-26 00:54:33,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258ae8fe-1c46-4957-9873-99665cc524a2/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 Result: TRUE